Acyclic Hydrocarbon Is Propylene Patents (Class 525/322)
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Patent number: 7019082Abstract: Embodiments of the present invention include a material comprising a polymer having a modulus of elasticity less than 105 Pa and a material comprising a polymer having a modulus of elasticity of less than 5×104 Pa. Embodiments also include a material comprising a polymeric network and a multiplicity of side chains attached to the polymeric network. The multiplicity of side chains may have an average molecular weight below the critical molecular weight for entanglements. In certain embodiments it may be advantageous for the side branches to have a glass transition temperature below the use temperature of the material. The polymer network may comprise at least two monomers so that the polymer network is a copolymer. Embodiments of the present invention also include methods of forming a polymer network. Such as, for example, a method of preparing a polymer network comprising cross-linking a polymer, wherein the polymer comprises a multiplicity of side chains.Type: GrantFiled: August 11, 2003Date of Patent: March 28, 2006Assignee: Carnegie Mellon UniversityInventors: Krzysztof Matyjaszewski, Tadeusz Pakula
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Patent number: 6916856Abstract: In accordance with the present invention, there are provided novel thermosetting resin compositions which do not require solvent to provide a system having suitable viscosity for convenient handling. Invention compositions have the benefit of undergoing rapid cure. The resulting thermosets are stable to elevated temperatures, are highly flexible, have low moisture uptake and are consequently useful in a variety of applications, e.g., in adhesive applications since they display good adhesion to both the substrate and the device attached thereto.Type: GrantFiled: July 3, 2002Date of Patent: July 12, 2005Assignee: Henkel CorporationInventors: Stephen M. Dershem, Dennis B. Patterson, Jose A. Osuna, Jr.
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Patent number: 6908967Abstract: Highly transparent and flexible elastoplastic polyolefin compositions which contain A) 10-20 parts by weight of a propylene homopolymer or copolymer with ethylene and/or one or more CH2?CHR ?-olefins, the copolymer containing at least 95% by weight of propylene; B) 5-20 parts by weight of propylene copolymer fraction containing ethylene and insoluble in xylene at room temperature; and C) 60-80 parts by weight of a propylene copolymer fraction containing a comonomer selected from ethylene and mixtures of ethylene with one or more CH2?CHR ?-olefin and soluble in xylene at room temperature, the fraction containing from 15 to 25% by weight of the comonomer, the percent by weight of the sum of the B and C components with respect to the total polyolefin composition being from 80% to 90%.Type: GrantFiled: November 27, 2002Date of Patent: June 21, 2005Assignee: Basell Poliolefine Italia S.p.A.Inventors: Gianni Collina, Anteo Pelliconi, Enea Garagnani
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Patent number: 6887944Abstract: A modified polypropylene which is a polypropylene having a value of racemic diad fraction [r] in a specific range and modified with a specific compound, e.g., (meth)acrylic acids, and their derivatives or styrene derivatives to have well-balanced properties of affinity for polypropylene-based materials, thermal stability, and high solubility in organic solvents; and a process for producing same. More particularly, the modified polypropylene which is a polypropylene having a value of racemic diad fraction [r] of 0.51 to 0.88, determined by 13C-NMR analysis, and chemically modified with a compound serving as a modifier, e.g., (meth)acrylic acids, and their derivatives or styrene derivatives; and the process for producing the modified polypropylene, wherein the polypropylene having a value of racemic diad fraction [r] in the above range is reacted with at least one type of the compound serving as the modifier in the presence of a radical initiator.Type: GrantFiled: June 30, 2003Date of Patent: May 3, 2005Assignee: Tonen Chemical CorporationInventors: Hideaki Wakabayashi, Hiroyuki Ozaki, Kunihiko Imanishi, Takeshi Ishihara, Masatoshi Horii, Satoshi Ueki
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Patent number: 6887943Abstract: This invention provides a graft modified polypropylene polymer which does not contain halogens, is excellent in certain properties such as solubility and can add good adhesiveness and coating ability to crystalline propylene polymer base materials, and a composition containing the same; and in particular, it provides a propylene polymer which contains a propylene polymer main chain having a stereo-block structure containing an isotactic block and a side chain containing a carboxylic acid group, an acid anhydride group or a carboxylic acid ester group, wherein when it is dissolved in toluene to a concentration of 10% by weight at 25° C., the insoluble matter is 1% by weight or less based on the total polymer, and a composition containing the same.Type: GrantFiled: October 31, 2002Date of Patent: May 3, 2005Assignee: Mitsubishi Chemical CorporationInventors: Masato Onoe, Teruaki Ashihara, Kazuyuki Hata, Fumihiko Shimizu, Naomasa Sato, Akio Tanna
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Patent number: 6861471Abstract: The present invention provides a coating composition for polyolefin resins, comprising a resin obtained by graft-copolymerizing at least one member selected from the group consisting of an ?,?-unsaturated carboxylic acid and an acid anhydride thereof with at least one member selected from the group consisting of polypropylene and a propylene-?-olefin copolymer, chlorinating the graft copolymer to give an acid-modified chlorinated polyolefin, linking a (meth)acrylic ester having one hydroxyl group to the polyolefin via an ester linkage, and then graft-copolymerizing (meth)acrylic acid monomers with the polyolefin; and a process for producing the composition.Type: GrantFiled: April 10, 2002Date of Patent: March 1, 2005Assignee: Toyo Kasei Kogyo Company LimitedInventors: Takafumi Masuda, Shoji Maekawa, Shigeru Sugiyama, Shin-ichi Akiyama
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Patent number: 6855771Abstract: A process for manufacturing block polymer or copolymer from isotactic polypropylene. Polyolefins are introduced into an extruder. Free radical generator is mixed with the polyolefins to form a mixture at room temperature for free radical formation. The mixture is brought up to a temperature of between 175° C. to 220° C. Chain degradation of the polyolefins is induced by the free radical formation to form degraded polymer. Alkenically unsaturated monomers or polymer segments are mixed with the degraded polymer to form a second mixture. The temperature of the second mixture may be lowered to a temperature of between 90° C. to 150° C. The temperature of the second mixture is then adjusted to a temperature between 100° C. to 250° C. to form a novel block polymer or copolymer.Type: GrantFiled: October 31, 2002Date of Patent: February 15, 2005Inventors: Grant Doney, Keith Salsman
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Patent number: 6852814Abstract: In accordance with the present invention, there are provided novel thermosetting resin compositions which do not require solvent to provide a system having suitable viscosity for convenient handling. Invention compositions have the benefit of undergoing rapid cure. The resulting thermosets are stable to elevated temperatures, are highly flexible, have low moisture uptake and are consequently useful in a variety of applictions, e.g., in adhesive applications since they display good adhesion to both the substrate and the device attached thereto.Type: GrantFiled: February 25, 2002Date of Patent: February 8, 2005Assignee: Henkel CorporationInventors: Stephen M. Dershem, Dennis B. Patterson, Jose A. Osuna, Jr.
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Patent number: 6825245Abstract: In accordance with the present invention, there are provided novel thermosetting resin compositions which do not require solvent to provide a system having suitable viscosity for convenient handling. Invention compositions have the benefit of undergoing rapid cure. The resulting thermosets are stable to elevated temperatures, are highly flexible, have low moisture uptake and are consequently useful in a variety of applications, e.g., in adhesive applications since they display good adhesion to both the substrate and the device attached thereto.Type: GrantFiled: August 1, 2002Date of Patent: November 30, 2004Assignee: Henkel CorporationInventors: Stephen M. Dershem, Dennis B. Patterson, Jose A. Osuna, Jr.
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Patent number: 6800688Abstract: A resin which has excellent adhesion to nonpolar substrates, is nontacky, and has satisfactory solubility in aromatic or nonaromatic solvents and satisfactory compatibility with other resins. The resin is a modified polyolefin resin having a weight-average molecular weight of 15,000 to 150,000 obtained by modifying a polyolefin resin by grafting thereto (A) an unsaturated polycarboxylic acid or a derivative thereof and (B) a (meth)acrylic ester represented by a specific general formula, the contents of (A) and (B) in the modified polyolefin resin being 0.1 to 20 wt. % and 0.1 to 30 wt. %, respectively.Type: GrantFiled: August 6, 2002Date of Patent: October 5, 2004Assignee: Nippon Paper Industries Co., Ltd.Inventors: Kazuhiro Usui, Kenichi Fujino, Terumasa Fujitaka, Tadashi Matsui, Hidetoshi Yoshioka, Shunji Sekiguchi
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Patent number: 6797784Abstract: The invention relates to homopolymers and/or copolymers containing <100 ppm coarse particles with a particle diameter of between 200 and 500 &mgr;m, to thermoplastic moulding materials containing said homopolymtrs and/or copolymers, to the use of the homopolymers and/or copolymers and moulding materials for the production of moulded parts and to the moulded parts themselves.Type: GrantFiled: May 3, 2001Date of Patent: September 28, 2004Assignee: Bayer AktiengesellschaftInventors: Michael Zobel, Dieter Wittmann, Herbert Eichenauer, Alfred Eitel, Thomas Eckel, Bernd Keller, Hans-Bernhard Hauertmann, Dorothy Rose
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Publication number: 20040158002Abstract: The invention relates to novel propylene polymers with improved properties especially with improved stiffness and impact strength comprising propylene homopolymers or propylene block copolymers with 90.0 to 99.9 wt % propylene and 0.1 to 10 wt % &agr;-olefins with 2 or 4 to 18 carbon atoms, or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are &bgr;-nucleated propylene polymers, whereby the &bgr;-nucleated propylene homopolymers have an IR&tgr;≧0.98, a tensile modulus ≧1500 MPa at +23° C. and a Charpy impact strength, ≧3 kJ/m2 at −20° C. using notched test specimens, and the &bgr;-nucleated propylene block copolymers are polymers having an IR&tgr; of the propylene homopolymer block of ≧0.98, a tensile modulus ≧1100 Mpa at +23° C. and a Charpy impact strength of ≧6 kJ/m2 at −20° C. using notched test specimens.Type: ApplicationFiled: February 25, 2004Publication date: August 12, 2004Inventors: James McGoldrick, Franz Ruemer, Stefan Schiesser, Siegfried Liedauer
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Publication number: 20030105237Abstract: Polyolefin molding composition having a broad melting range, process for its preparation, and its useType: ApplicationFiled: September 10, 1993Publication date: June 5, 2003Inventors: ANDREAS WINTER, WALTER SPALECK, BERND BACHMANN
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Patent number: 6569950Abstract: There is provided a process for producing an acid modified polypropylene resin, which comprises the step of kneading: (1) 100 parts by weight of a polypropylene resin (A), (2) 0.1 to 20 parts by weight of an unsaturated carboxylic acid or a derivative thereof (B), (3) 0.01 to 20 parts by weight of an organic peroxide (C) having a decomposition temperature of from 50 to 120° C., at which a half-life of the organic peroxide is 1 minute, and (4) optionally, 0.01 to 20 parts by weight of an organic peroxide (D) having a decomposition temperature of from 150 to 200° C., at which a half-life of the organic peroxide is 1 minute.Type: GrantFiled: January 14, 2002Date of Patent: May 27, 2003Assignee: Sumitomo Chemical Company, LimitedInventors: Katsuhisa Kitano, Takashi Sanada
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Patent number: 6566446Abstract: A new process of interpolymerizing ethylene interpolymer products having improved properties, such as increased onset of crystallization temperature, is disclosed. Preferably, the process comprises interpolymerizing a first homogeneous ethylene/alpha-olefin interpolymer and at least one second homogeneous ethylene/alpha-olefin interpolymer using at least two constrained geometry catalysts having different reactivities such that the first ethylene/alpha-olefin interpolymer has a narrow molecular weight distribution (NMWD) with a very high comonomer content and relatively high molecular weight and the second ethylene/alpha-olefin interpolymer has a NMWD with a low comonomer content and a molecular weight lower than that of the first interpolymer. The resultant first homogeneous interpolymer is combined with the resultant second homogeneous interpolymer in appropriate weight ratios resulting in the desired finished polymer structure.Type: GrantFiled: September 18, 1997Date of Patent: May 20, 2003Assignee: Dow Global Technologies Inc.Inventors: Deepak R. Parikh, Robert S. Cardwell, Brian W. S. Kolthammer
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Patent number: 6562914Abstract: A process for homo or copolymerizing propylene, wherein propylene is polymerized in the presence of a catalyst at an elevated temperature in a reaction medium in which a major part of the reaction medium is propylene and the polymerization is carried in at least one CSTR or loop reactor, where the polymerization is carried out at a temperature and a pressure which are above the corresponding critical temperature and the pressure of the reaction medium and were the residence time is at least 15 minutes. The process can also have a subcritical loop polymerization before the supercritical stage polymerization or gas phase polymerization after the supercritical stage polymerization.Type: GrantFiled: April 27, 2000Date of Patent: May 13, 2003Assignee: Borealis A/SInventors: Henrik Andtsjö, Ismo Pentti, Ali Harlin
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Publication number: 20030073785Abstract: The present invention provides an olefin block copolymer for a viscosity index improver capable of preparing a lubricating oil composition having excellent low temperature properties and excellent balance between viscosity and shear stability, a viscosity index improver and a lubricating oil composition comprising the viscosity index improver.Type: ApplicationFiled: May 31, 2002Publication date: April 17, 2003Inventors: Keiji Okada, Shigenobu Ikenaga, Ryousuke Kaneshige, Tomoaki Matsugi, Shinichi Kojoh, Terunori Fujita
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Patent number: 6545088Abstract: Ethylene, an &agr;-olefin and, optionally, a diene monomer are polymerized in a process comprising the step of contacting (1) ethylene, (2) at least one C3-C20 aliphatic &agr;-olefin, (3) optionally, at least one C4-C20 diene, (4) a catalyst comprising (a) a metallocene complex, and (b) an activator, and (5) a solvent. The process is conducted in either a single reactor or in multiple reactors, the latter configured either in series or parallel. Solvent is removed from the polymer stream in an anhydrous, first stage solvent recovery operation such that the solids concentration of the product stream is increased by at least 100 percent. Additional solvent is removed in an anhydrous, second stage solvent recovery operation from the product of the first stage solvent recovery operation such that the solids concentration of the product stream is in excess of 65 weight percent.Type: GrantFiled: July 12, 1996Date of Patent: April 8, 2003Assignee: Dow Global Technologies Inc.Inventors: Brian W. S. Kolthammer, Robert S. Cardwell, Deepak R. Parikh, Morris S. Edmondson, Stanley W. Smith
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Patent number: 6506847Abstract: The molecular weight of a graft copolymer is reduced by carrying out the following steps in a non-oxidizing atmosphere: (1) treating a propylene polymer material with an organic compound that is a free radical polymerization initiator, (2) treating the propylene polymer material with about 2 to about 240 parts per hundred parts of the propylene polymer material, of at least one vinyl-substituted grafting monomer in the presence of about 0.5% to about 5% of a polymerizable chain transfer agent that is a derivative of allyl alcohol, and (3) removing any unreacted monomer, decomposing any unreacted initiator, and deactivating any residual free radicals in the material.Type: GrantFiled: August 8, 2001Date of Patent: January 14, 2003Assignee: Basell Poliolefine Italia S.p.A.Inventor: Cheng Q. Song
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Patent number: 6495629Abstract: A novel chlorine-free modified polyolefin resin composition with excellent adherence to nonpolar substrates, excellent solubility in solvents, excellent compatibility with other resins, and without tack after painting and drying is obtainable by graft modifying a mixed resin having 40 to 99 parts by weight of polyolefin resin (A) and 1 to 60 parts by weight of ethylenic compound-unsaturated carboxylic acid copolymer (B) that contains 0.1 to 50% by weight of unsaturated carboxylic acid derivative, with unsaturated carboxylic acid derivative and/or its anhydride (C), the modified polyolefin resin composition having weight average molecular weight of 20,000 to 150 000 and the grafting weight of (C) being 0.1 to 20% by weight.Type: GrantFiled: March 15, 2001Date of Patent: December 17, 2002Assignee: Nippon Paper Industries Co., Ltd.Inventors: Kazuhiro Usui, Kenichi Fujino, Terumasa Fujitaka, Koji Masumoto, Hidetoshi Yoshioka
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Patent number: 6455643Abstract: Described herein is a process and an apparatus for preparing propylene homopolymers and copolymers, which comprises polymerizing propylene optionally with comonomers in the presence of a catalyst at elevated temperature and pressure in at least one slurry reactor and at least one gas phase reactor, the polymerization product of at least one slurry reactor, containing unreacted monomers, being conducted to a first gas phase reactor essentially without recycling of the unreacted monomers to the slurry reactor. The invention provides for fast start-ups because the gas phase bed material is available directly from the loop reactor.Type: GrantFiled: June 24, 1998Date of Patent: September 24, 2002Assignee: Borealis Technology OyInventors: Ali Harlin, Kauno Alastalo, Esa Korhonen, Jouni Kivelä
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Patent number: 6451894Abstract: Molded articles of thermoplastic polyolefin blends having improved resistance to fluids such as petroleum fuels after being painted with flexible coatings such as polyurethane paints and the like are disclosed. These blends include a crystalline or semi-crystalline polyolefin such as polyethylene, polypropylene, or a copolymer of ethylene and a C3 to C10 olefin, and a multimodal elastomer of sequentially polymerized ethylene-&agr;-olefin monomers. The substantially crystalline polyolefin is present in an amount of 30 to 98 weight percent, while the multimodal elastomer, which is substantially amorphous, is present in an amount of about 2 to 70 weight percent. The blends may contain additional polymeric components, fillers and the like. In addition to increased paint adherence, higher weld line strength, low temperature ductility, and processability can be achieved.Type: GrantFiled: August 13, 1999Date of Patent: September 17, 2002Assignees: Solvay Engineered Polymers, Dupont Dow Elastomers L.L.C., The Dow Chemical CompanyInventors: Satchit Srinivasan, Edward Szczepaniak, Jhy-Yuan Her, Michael K Laughner, Teresa Plumley Karjala
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Patent number: 6426388Abstract: Disclosed is a novel chlorine-free modified polyolefin composition with excellent adherence to polyolefin substrates, with excellent solventresistance, oil resistance and weather resistance, with no tack, and also with excellentcohesion, obtainable by using 0.5 to 15% (by weight) of maleic anhydride and 0.1 to 7.5% (by weight) of styrenic monomer to polypropylene, eyhylene-propylene copolymer or ethylene-propylene-buten copolymer, and by graft polymerizing so as the weight ratio of maleic anhydride to styrenic monomer to become not less than 2 to not more than 5.Type: GrantFiled: November 13, 2000Date of Patent: July 30, 2002Assignee: Nippon Paper Industries Co., Ltd.Inventors: Kenichi Fujino, Terumasa Fujitaka, Kazuhiro Usui, Kouji Masumoto, Hidetoshi Yoshioka
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Patent number: 6426389Abstract: A novel process for preparing functionalized polypropylenes entailing apportioned introduction of free radical initiator is described. Also described are novel functionalized polypropylenes having a yellowness index color of at least 77 and a Brookfield Thermosel viscosity of greater than 7000 cP at 190° C. Preferably, the functionalized polypropylenes are further characterized by having an acid number greater than 6 milligrams of KOH per gram of polymer.Type: GrantFiled: January 31, 2001Date of Patent: July 30, 2002Assignee: Eastman Chemical CompanyInventor: Stephen Wayne Coe
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Patent number: 6414102Abstract: The invention relates to polyolefin copolymers (I) and to graft copolymers (II) which are prepared from the copolymers (I), wherein the copolymers (I) are linear copolymers containing divinylbenzene comonomer units selected from the group consisting of 1,4-divinylbenzene units, mixtures of 1,4- and 1,3-divinylbenzene units and mixtures of 1,4-, 1,3- and 1,2-divinylbenzene units, wherein R, in formulas I and II, is a C1 to C10 linear or branched alkyl group or a C6 to C10 substituted or unsubstituted aromatic group; and wherein G and G′, independently, are selected from —H, —OH, epoxy, —NH2, —COOH, anhydride, —Cl, —Br, —M, —COOM (M=metal) or a polymer chain having the molecular weight of at least about 500, which can be derived from both step and chain polymerization reactions. In the graft copolymer (II), the combined alpha-olefin mole % (x+y) is from about 50 and 99.Type: GrantFiled: March 19, 2001Date of Patent: July 2, 2002Assignee: The Penn State Research FoundationInventors: Tze-Chiang Chung, Jin Yong Dong
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Publication number: 20020061975Abstract: “HEAT-SHRINKABLE FILMS BASED ON POLYOLEFIN COMPOSITIONS COMPRISING: (I) A LINEAR COPOLYMER OF ETHYLENE WITH ONE OR MORE &agr;-OLEFINS (LLDPE); (II) A COPOLYMER OF PROPYLENE HAVING A PARTICULAR COMPOSITION AND CHARACTERISTICS. THE FILMS ARE CHARACTERIZED BY GOOD OPTICAL AND MECHANICAL PROPERTIES, IN PARTICULAR A HIGH TEAR RESISTANCE.Type: ApplicationFiled: April 18, 1996Publication date: May 23, 2002Inventors: GIANNI PERDOMI, CLAUDIO COMETTO, ENRICO BECCARINI
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Patent number: 6365682Abstract: A process for producing terpolymers of propylene, comprising a) feeding into a slurry reactor a reaction mixture containing 50-85 w-% of propylene, 1-10 w-% of ethylene, 15-40 w-% of another C4-C8 alpha-olefin, a catalyst system maintaining olefin polymerization at said temperature conditions, and optionally hydrogen, b) polymerizing said reaction mixture at a temperature of lower than 70° C. a sufficient time to obtain a propylene terpolymer amounting to 50-99 w-% of the end product, c) transferring said reaction mixture into a gas phase reactor operating at a pressure of higher than 5 bars, preferably higher than 10 bars, optionally adding 0-30 w-% of ethylene, 0-10 w-% of another C4-C8 alpha-olefin, 0-40 w-% of propylene and optionally hydrogen, and d) continuing polymerization in said gas phase reactor for obtaining a propylene terpolymer amounting to 1-50 wt-% of the end product. The terpolymer has a melting temperature a less than 135° C., preferably less than 132° C.Type: GrantFiled: February 22, 2000Date of Patent: April 2, 2002Assignee: Borealis Technology OyInventors: Kauno Alastalo, Bo Malm, Päivi Pitkänen, Mika Meller, Anne Britt Bjåland, Nina Ackermans, Kshama Motha
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Patent number: 6355735Abstract: A semi-interpenetrating polymer network including at least one epoxy monomer, at least one olefin monomer forming a co-monomer mixture with the epoxy monomer and a catalytic amount of at least one palladium compound uniformly distributed in said co-monomer mixture to promote formation of the semi-interpenetrating polymer network under ambient conditions.Type: GrantFiled: August 17, 1999Date of Patent: March 12, 2002Assignee: 3M Innovative Properties CompanyInventors: Mark I. Wagner, Stephen D. Meyer
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Patent number: 6323286Abstract: The composition of the present invention is not costly, excellent in an emboss transferring property, and is applicable for various skin materials and interior materials. The present invention provides a polypropylene composition which comprises a propylene block copolymer component containing a crystalline polypropylene segment and a propylene/&agr;-olefin copolymer segment, and a synthetic olefin rubber component and/or a synthetic styrene rubber component, wherein the copolymer segment has an intrinsic viscosity [&eegr;]RC of 6.5 dl/g or less, and an intrinsic viscosity ratio [&eegr;]RC/[72 ]PP of the copolymer to the crystalline polypropylene segment is 0.5 to 1.3; and a product of this intrinsic viscosity ratio [&eegr;]RC/[&eegr;]PP and a weight ratio thereof WPP/WRC, ([&eegr;]RC/[&eegr;]PP)×(WPP/WRC), falls in the range of 0.2-4.Type: GrantFiled: April 14, 2000Date of Patent: November 27, 2001Assignee: Chisso CorporationInventors: Hitoshi Kuramochi, Osamu Kojima, Yoshitaka Sumi, Takanori Nakashima, Shinichi Akitaya
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Patent number: 6319991Abstract: A propylene polymer blend is disclosed which comprises (A) a propylene-&agr;-olefin random copolymer with a propylene content of 90 to 99% by weight and (B) a propylene-&agr;-olefin random copolymer with a propylene content of 55 to 90% by weight, wherein the intrinsic viscosity ([&eegr;B]) of the copolymer B ranges from 1.3 to 3.5 dl/g, the ratio ([&eegr;B]/[&eegr;A]) of the intrinsic viscosity ([&eegr;B]) of the copolymer B to the intrinsic viscosity ([&eegr;A]) of the copolymer A ranges from 0.5 to 1.3 and a product (([&eegr;B]/[&eegr;A])×(WA/WB)) of the intrinsic ratio ([&eegr;B]/[&eegr;A]) of both copolymers and the weight ratio (WA/WB) of both copolymers ranges from 1.0 to 4.5. A polypropylene resin composition comprises 99 to 99.9999% by weight of the propylene polymer blend and 1 to 0.0001% by weight of an &agr;-crystal nucleating agent.Type: GrantFiled: May 20, 1998Date of Patent: November 20, 2001Assignee: Chisso CorporationInventors: Chikashi Okayama, Takanori Nakashima, Shinichi Akitaya, Yoshitaka Sumi
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Patent number: 6313225Abstract: Disclosed is a catalyst for olefin (co-)polymerization comprising a transition metal compound catalytic component which contains at least a titanium compound and an &agr;-olefin (co-)polymer (A) supported by the catalyst, wherein said &agr;-olefin (co-)polymer (A) has an intrinsic viscosity (&eegr;) of 15 dl/g to 100 dl/g measured in tetrahydronaphthalene at 135° C., and the content of said olefin (co-)polymer (a) is 0.01 to 5000 g for 1 g of the transition compound catalytic component.Type: GrantFiled: September 14, 1998Date of Patent: November 6, 2001Assignee: Chisso CorporationInventors: Jun Saito, Hideo Nobuhara, Hitoshi Sato
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Patent number: 6313228Abstract: A process peroxidically treats olefin polymers with di-tert-butyl peroxide in an extruder. The olefin polymers together with di-tert-butyl peroxide under an inert gas are fed to an extruder. The olefin polymers are used in a finely divided form at from 55 to 110° C. The use of peroxidically treated olefin polymers for producing moldings, fibers, films or nonwoven spunbond fabrics is described, as is a process for producing moldings, fibers, films or nonwoven spunbond fabrics.Type: GrantFiled: November 17, 1999Date of Patent: November 6, 2001Assignee: Basell Polyolefine GmbHInventors: Karl Huber, Jürgen Schwind, Klaus Lehr, Hermann Elser, Horst Klassen, Karl-Heinz Kagerbauer
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Patent number: 6303698Abstract: Disclosed is propylene copolymers produced by the aid of a specific metallocene catalyst system, wherein a percentage of mis-insertion in the copolymer is highly controlled and the copolymers possess beat-resisting property and a high melt strength and a low MFR and are narrow in molecular weight distribution excellent in particulate properties as well as a process for producing the copolymers possessing high steroregularity at a practical polymerzation temperature. The gist of the present invention resides in production of propylene copolymers wherein copolymerization with &agr;,&ohgr;-diene is carried out by the aid of a supported-type catalyst system comprised predominantly of the following compound (A), (B), (C) and (D) at a temperature above 45° C.: the compound (A): a specific metallocene compound represented by Q(C5H4−mR1m)(C5H4−nR2n) MXY, the compound (B): an aluminoxane, the compound (C): an organoaluminum compound, and the compound (D): a particulate carrier.Type: GrantFiled: May 9, 2000Date of Patent: October 16, 2001Assignee: Chisso CorporationInventors: Tsutomu Ushioda, Jun Saito, Mototake Tsutsui, Yoshitoyo Yasuda, Hiroyuki Fujita, Yoshiyuki Ohgi
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Patent number: 6300434Abstract: Propylene-ethylene copolymers obtainable by three-step polymerization from the gas phase in an agitated fixed bed by means of a Ziegler-Natta catalyst system which, in addition to a titanium-containing solid component, also contains, as cocatalyst, an aluminum compound, where, in a first polymerization step, propylene is polymerized at from 60 to 90° C. and at from 20 to 40 bar and at a mean residence time of the reaction mixture of from 0.5 to 5 hours, then, in a second polymerization step, a mixture of propylene and ethylene is polymerized onto the polymer obtained from the first polymerization step at from 40 to 110° C. and from 5 to 30 bar, this pressure being at least 7 bar below the pressure in the first polymerization step, and at a mean residence time of the reaction mixture of from 0.2 to 4 hours, and then, in a third polymerization step, ethylene or a mixture of ethylene and propylene is polymerized onto the polymer obtained from the second polymerization step at from 40 to 110° C.Type: GrantFiled: September 6, 1995Date of Patent: October 9, 2001Assignee: Basell Polyolefin GmbHInventors: Harald Schwager, Juergen Kerth
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Patent number: 6300420Abstract: The invention relates to a copolymer composition prepared from copolymers of propene and &agr;-olefin having 2 to 12 carbon atoms, having high molecular weight, a broad molecular weight distribution and an improved comonomer distribution. The invention relates also to a process for producing the composition and the use of the composition in pipes, fittings, profiles, films and foams. The composition is a so-called reactor mixture of copolymers of said monomers comprising a first copolymer having a higher molecular weight, an &agr;-olefin content of 3 to 10 wt. % and a melt flow rate MFR2 of 0,005 to 0,8, and a second copolymer having a lower molecular weight, thus the final composition has a comonomer content of 2 to 10 wt. %, a melt flow rate MFR2 of 0,05 to 2,5 wt. %, a melt flow ratio MFR10/MFR2 of 6 to 15, and the split of the copolymers in the composition between the higher molecular weight copolymer and the lower molecular weight copolymer is from 40/60 to 70/30.Type: GrantFiled: May 12, 1997Date of Patent: October 9, 2001Assignee: Borealis A/SInventors: Pirjo J{umlaut over (aa)}skeläinen, Amir Karbasi, Bo Malm, Päivi Pitkänen
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Patent number: 6265493Abstract: The invention relates to a process for preparing polyolefin graft copolymers (II) from linear and well defined polyolefin copolymers (I) containing divinylbenzene comonomer units, wherein R, in formulas I and II, is a C1 to C10 linear or branched alkyl group or a C6 to C10 substituted or unsubstituted aromatic group; and wherein G and G′, independantly, are selected from —H, —OH, epoxy, —NH2, —COOH, anhydride, —Cl, —Br, —M, —COOM (M=metal, e.g., Li, Na, K and Ca) or a polymer chain having the molecular weight of at least about 500, which can be derived from both step and chain polymerization reactions. G and G′ can be selected singly or in a combination of two or more thereof. In the graft copolymer composition, the combined alpha-olefin mole .% (x+y) is from about 50 to 99.9 mole %. Preferably, x+y is from 85 to 99.9 mole %, and most preferably x+y is from 95 to 99.9 mole %.Type: GrantFiled: May 18, 2000Date of Patent: July 24, 2001Assignee: The Penn State Research FoundationInventors: Tze-Chiang Chung, Jinyong Dong
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Patent number: 6254804Abstract: An oxygen scavenger composition, for use in or with plastics materials, includes a polymer or oligomer having at least one cyclohexene group or functionality. The composition produces only low levels of volatile or extractable (from a plastics material in which it is incorporated) products as a consequence of oxygen scavenging.Type: GrantFiled: December 20, 2000Date of Patent: July 3, 2001Assignee: Cryovac, Inc.Inventors: Andrew E. Matthews, Craig Depree
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Publication number: 20010004657Abstract: An olefin (co-)polymer composition including 0.01 to 5.0 weight parts of high molecular weight polyethylene which is an ethylene homopolymer or an ethylene-olefin copolymer containing 50 weight % or more of an ethylene polymerization unit; and 100 weight parts of an olefin (co-)polymer other than the high molecular weight polyethylene, wherein said high molecular weight polyethylene has an intrinsic viscosity [&eegr;E] of 15 to 100 dl/g measured in tetralin at 135° C. or more, and said high molecular weight polyethylene exists as dispersed fine particles having a numerical average particle size of 1 to 5000 nm.Type: ApplicationFiled: September 14, 1998Publication date: June 21, 2001Applicant: CHISSO CORPORATIONInventors: JUN SAITO, HIDEO NOBUHARA, SHINGO KIKUKAWA, HITOSHI SATO, AKIRA YAMAUCHI
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Patent number: 6218476Abstract: A novel process for preparing functionalized polypropylenes entailing apportioned introduction of free radical initiator is described. Also described are novel functionalized polypropylenes having a yellowness index color of at least 77 and a Brookfield Thermosel viscosity of greater than 7000 cP at 190° C. Preferably, the functionalized polypropylenes are further characterized by having an acid number greater than 6 milligrams of KOH per gram of polymer.Type: GrantFiled: March 3, 1999Date of Patent: April 17, 2001Assignee: Eastman Chemical CompanyInventor: Stephen Wayne Coe
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Patent number: 6187868Abstract: The present invention relates to a chlorinated polyvinyl chloride compound and an article made therefrom. The compound comprises a two step CPVC resin, chlorinated polyethylene as well as an impact modifier. The compound exhibits good physical properties, chemical resistance as well as ease of processability.Type: GrantFiled: May 26, 1999Date of Patent: February 13, 2001Assignee: The B. F. Goodrich CompanyInventors: Arthur Leonard Backman, Bernard Frank Cinadr
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Patent number: 6117946Abstract: A propylene block copolymer having a specified composition and consisting of a xylene soluble portion at 20.degree. C. in an amount of 5 wt % or more and a portion excluding the CXS portion, the melting temperature of the CXIS portion measured by a differential scanning caloriemeter being 130 to 155.degree. C., wherein the difference in transparency in terms of haze between prior to and posterior to the 1-hour treatment at 110.degree. C of a 150 .mu.m thick film obtained by forming said copolymer into a film by extrusion is 8% or less.According to the present invention, a block copolymer having a good transparency and improved impact resistance at a low temperature, and further exhibiting less bleeding at high-temperature heat treatment, can be provided.Type: GrantFiled: July 28, 1998Date of Patent: September 12, 2000Assignee: Sumitomo Chemical Company, LimitedInventors: Takanori Kume, Eisuke Shiratani, Kazuki Wakamatsu
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Patent number: 6111027Abstract: This invention relates to an adhesive composition comprising a copolymer comprising units derived from one or more macromonomers and an unsaturated acid or an unsaturated anhydride wherein the weight average molecular weight of the copolymer is at least twice the weight average molecular weight of the macromonomer, the melt index of the copolymer is 1 dg/min or more, and wherein the macromonomer:(1) has a weight average molecular weight between 500 and 100,000;(2) has at least 30% terminal unsaturation; and(3) comprises a copolymer of ethylene and at least one .alpha.-olefin, and/or a copolymer of propylene and ethylene or an .alpha.-olefin.Type: GrantFiled: October 1, 1998Date of Patent: August 29, 2000Assignee: Exxon Chemical Patents, IncInventors: Pamela J. Wright, Dennis George Peiffer, Kenneth Lewtas, Quoc Luvinh, Joseph Jacques Ripet, Anne Vera Macedo
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Patent number: 6100224Abstract: A copolymer comprising units of an unsaturated dicarboxylic monomer and an ethylene .alpha.-olefin macromer is disclosed. The macromer is an unsaturated ethylene .alpha.-olefin polymer comprising units of from ethylene and at least one .alpha.-olefin represented by the formula CH.sub.2 .dbd.CHR.sup.a, wherein R.sup.a is a C.sub.1 to C.sub.18 linear alkyl group or a C.sub.3 to C.sub.18 branched alkyl group; the ethylene .alpha.-olefin polymer has a number average molecular weight of from about 500 to about 100,000; and at least about 30% of the unsaturation in the ethylene .alpha.-olefin polymer is terminal vinylidene. The copolymer has a carbon-carbon backbone and contains succinic groups and hydrocarbyl groups. The copolymer can be derivatized by reaction with nucleophilic reactants including monoamines, polyamines, monoalcohols, polyols, amino alcohols, reactant metal compounds and mixtures thereof. The derivatized copolymers can be post-treated (e.g., borated) with one or more post-treating agents (e.g.Type: GrantFiled: October 1, 1997Date of Patent: August 8, 2000Assignee: Exxon Chemical Patents IncInventors: Dennis G. Peiffer, Kenneth Lewtas, Robert D. Lundberg, Pamela J. Wright, Antonio G. Lazarus, Jacob Emert
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Patent number: 6084041Abstract: A process for homo or copolymerizing propylene, wherein propylene is polymerized in the presence of a catalyst at an elevated temperature in a reaction medium in which a major part of the reaction medium is propylene and the polymerization is carried in at least one CSTR or loop reactor, where the polymerization is carried out at a temperature and a pressure which are above the corresponding critical temperature and the pressure of the reaction medium and where the residence time is at least 15 minutes. The process can also comprise a supercritical loop polymerization before the supercritical stage polymerization or a gas phase polymerization after the supercritical stage polymerization.Type: GrantFiled: May 17, 1996Date of Patent: July 4, 2000Assignee: Borealis A/SInventors: Henrik Andtsjo, Ismo Pentti, Ali Harlin
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Patent number: 6077878Abstract: The present invention relates to a foamed article comprising a modified polypropylene resin which is a graft copolymer of a polypropylene resin and an aromatic vinyl monomer and has an average number of the grafted aromatic vinyl chains of not less than 1 in one molecule of the graft copolymer and a weight average molecular weight of the grafted aromatic vinyl chains of not less than 200, and relates to a process for preparation thereof. According to the present invention, the foamed article comprising the polypropylene resin and having a high closed cell content, a high expansion ratio and good external appearance can be provided.Type: GrantFiled: December 17, 1997Date of Patent: June 20, 2000Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Tetsuo Okura, Mitsuharu Kourogi, Yoshifumi Fukui, Hesun Kim, Haruo Tomita, Osamu Miyama, Taizo Aoyama
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Patent number: 6051650Abstract: A rubber-reinforced thermoplastic resin composition is disclosed. The rubber-reinforced thermoplastic resin composition comprises a thermoplastic resin matrix having dispersed therein particles of a graft polymer, the particles of a graft polymer comprising particles of a rubber polymer having emulsion-graft-polymerized to the surface thereof two or more kinds of vinyl compounds copolymirizable with the rubber polymer, wherein the surface graft coverage of the vinyl compounds graft-polymerized to the surface of the particles of a rubber polymer as determined by equation (m1) is 80% or more and the average thickness of the vinyl compounds graft-polymerized to the surface of the particles of a rubber polymer is from 5 to 25 nm:Surface graft coverage (%)=(s2/s1).times.Type: GrantFiled: March 17, 1998Date of Patent: April 18, 2000Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Shigeru Endo, Makiko Nagao, Toshinori Yamanaka
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Patent number: 6028140Abstract: Homopolymers or copolymers obtained by a multistage process of olefins having the formula CH.sub.2 .dbd.CHR, in which R is hydrogen or R has from 1 to 10 carbon atoms and is an alkyl, cycloalkyl or aryl group, the process comprising:(A) a first stage of polymerization in which one or more of the olefins are polymerized in the presence of a titanium or vanadium catalyst;(B) a treatment stage in which the product obtained in the first stage of polymerization (A) is brought into contact with a compound capable of deactivating the catalyst present in the stage (A); and also brought into contact with a compound of a transition metal M selected from the group consisting of Ti, Zr, V, or Hf containing at least one M-.pi. bond and optionally with an alkyl-Al compound; and(C) a second stage of polymerization in which one or more of the olefins are polymerized, in one or more reactors, in the presence of the product obtained in treatment stage (B).Type: GrantFiled: May 29, 1997Date of Patent: February 22, 2000Assignee: Montell Technology Company B.V.Inventors: Gianni Collina, Tiziano Dall'occo, Maurizio Galimberti, Enrico Albizzati, Luciano Noristi
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Patent number: 6015854Abstract: The present invention teaches propylene-ethylene copolymers of about 5 to about 100 dg/min melt flow that have a homopolymer phase combined with a copolymer rubber phase in which the ethylene content of the rubber is between about 75 to about 95% w and a clarity of greater than 25%. The rubber content of the copolymer ranges between about 3% w to about 60% w. In addition to improved clarity, these copolymers have high stiffness (flexural modulus) and good falling weight impact toughness at low temperatures.Type: GrantFiled: October 24, 1997Date of Patent: January 18, 2000Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventor: James Douglas McCullough, Jr.
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Patent number: 6015862Abstract: Functionalized terpolymers of two different .alpha.-olefin and para-alkylstyrene are disclosed, wherein the functionalized terpolymers have a substantially homogeneous compositional distribution represented by the formula: ##STR1## in which R.sub.1, R.sub.2, R' and R" independently, are hydrogen or a primary or secondary alkyl group; X is a functional group, such as --COOH, --OH, --SH, --NH.sub.2, --Cl, --Br, --M, --COOM (M =metals, e.g. Li, Na, K and Ca) and anhydrides; P is a polymer having a molecular weight of at least 500; Y is chemical linkage between polymer P and para-alkystyrene side chain; and the combination of a+b+c+d+e represents the empirical formula of a substantially random functional polymer; where both a and b are greater than 0; where the sum of a+b ranges from about 50 to 100,000; where each of c, d and e range from 0 to 10,000; where both d and e can not be 0; and where the sum of c+d+e is at least 1.Type: GrantFiled: October 23, 1998Date of Patent: January 18, 2000Assignee: The Penn State Research FoundationInventors: Tze-Chiang Chung, Honglan Lu
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Patent number: 6005034Abstract: A propylene-ethylene copolymer composition is obtained which has good moldability and an excellent balance of rigidity, toughness, and impact-strength. The composition has a melt flow rate of 10 to 300 g/10 minutes and is obtained by producing 60 to 95% by weight, based on the weight of whole polymer, of a propylene polymer having a melt flow rate (ASTM D1238) in the range of 100 to 1,000 g/10 minutes and having a ratio (Cf) of integrated values of the propylene polymer dissolved in o-dichlorobenzene at a temperature of lower than 112.degree. C., and a temperature of 112.degree. C. or higher, respectively, of 0.5 or less, by carrying out polymerization of propylene in the presence of a highly stereoregular catalyst and hydrogen in a polymerization step (I), and then producing 5 to 40% by weight, based on the weight of whole polymer, of an ethylene-propylene copolymer by feeding ethylene and propylene to the propylene polymer to react so that the content of ethylene becomes 30 to 80% by weight.Type: GrantFiled: April 30, 1997Date of Patent: December 21, 1999Assignees: Chisso Corpoation, Toyota Jidosha Kabushiki KaishaInventors: Teruaki Hayashida, Shinei Gima, Kouichi Hatada, Osamu Kojima, Ken Shimizu, Hirokazu Nakajima, Takao Nomura, Yoshihiro Kanome, Takeyoshi Nishio