Solid Polymer Other Than Graft Or Graft-type Derived From Nonaromatic Plural Ethylenically Unsaturated Reactant Patents (Class 525/87)
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Patent number: 6515079Abstract: In a process for preparing thermoplastic molding compositions by a) polymerizing, in aqueous emulsion, dienes, C1-C12-alkyl acrylates or mixtures of these, where from 0 to 30% by weight of these monomers may have been replaced by other copolymerizable monomers, and where from 0 to 10 by weight of these monomers may have been replaced by crosslinking monomers, to give a rubber latex with a glass transition temperature below −10° C.Type: GrantFiled: December 12, 2000Date of Patent: February 4, 2003Assignee: BASF AktiengesellschaftInventors: Graham Edmund McKee, Falko Ramsteiner, Peter Barghoorn, Michael Breulmann, Norbert Niessner
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Publication number: 20030018126Abstract: The invention relates to a process for preparing an impact-modified plastic based on grafted crosslinked rubber particles, and also to an impact-modified plastic obtainable by the process. To prepare the impact-modified plastic, (a) particles of a crosslinked rubber are produced from a first monomer mixture which has a content of <50% by weight, preferably <5% by weight, particularly preferably <2% by weight, of diene compounds. The particles of the crosslinked rubber are (b) grafted with a second monomer or monomer mixture, with formation of a graft shell. Particles of the grafted crosslinked rubber are (c) added to a third monomer mixture, and the monomers of the third monomer mixture (d) are polymerized, with formation of a matrix. The process of the invention is simple to carry out and gives impact-modified plastics with very good mechanical properties, in particular with better resistance to weathering.Type: ApplicationFiled: July 26, 2002Publication date: January 23, 2003Inventors: Graham Edmund McKee, Hermann Gausepohl, Norbert Niessner
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Patent number: 6503984Abstract: A combination of a low flexural modulus and low crystallinity polyolefin and a functionalized polyolefin were found to result in an olefin composition with excellent adhesion to metals and polar polymers (e.g. polyesters, polyamides, etc) especially fibers therefrom. When these two polyolefins were added to a thermoplastic vulcanizate (e.g. used to partially or fully replace the semicrystalline polyolefin of a thermoplastic vulcanizate), the thermoplastic vulcanizate was found to have the necessary adhesion to form fiber reinforced thermoplastic vulcanizate.Type: GrantFiled: December 22, 1998Date of Patent: January 7, 2003Assignee: Advanced Elastomer Systems, L.P.Inventors: Jim Johnson, Marvin Hill
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Patent number: 6472487Abstract: Synthetic polymers having moieties capable of covalent or hydrogen bonding to cellulose and one or more amphiphilic moieties are disclosed. These polymers are capable of providing two distinct properties to paper products, such as tissues, which properties heretofore have been imparted through the use of at least two different molecules. The backbone of these synthetic polymers is based on modified vinyl polymers, such as polyvinyl alcohol, polyacrylamides and polyacrylic acids.Type: GrantFiled: May 14, 2001Date of Patent: October 29, 2002Assignee: Kimberly-Clark Worldwide, Inc.Inventors: Wen Zyo Schroeder, Daniel Arthur Clarahan, Mike Thomas Goulet, Thomas Gerard Shannon
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Patent number: 6462131Abstract: Compatibilized blends of an isobutylene polymer and an unsaturated diene polymer are prepared by utilizing a compatibilizing agent comprising a block/graft copolymer containing polyisobutylene segments and C4 to C6 alkyl-substituted styrene polymer segments, such as poly(t-butylstyrene) segments.Type: GrantFiled: October 16, 2000Date of Patent: October 8, 2002Assignee: ExxonMobil Chemical Patents Inc.Inventors: Mun Fu Tse, Hsien Chang Wang, Ramanan Krishnamoorti, Andy H. Tsou
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Patent number: 6448332Abstract: Compositions which have substantial weatherability and impact resistance include a substantially uniform blend of an acrylonitrile/styrene/acrylic polymeric material and a component selected from (A) polymeric materials including units derived from ethylene, carbon monoxide and copolymerizable ethylenically unsaturated organic compounds, (B) graft polymer components including ethylene-propylene-non-conjugated diene terpolymers grafted with styrene and acrylonitrile monomers, and mixtures thereof. Methods for making such compositions include forming a substantially uniform physical mixture of such polymeric material and component.Type: GrantFiled: January 20, 2000Date of Patent: September 10, 2002Assignee: Hughes Processing, Inc.Inventor: Roderick E. Hughes
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Publication number: 20020072571Abstract: Porous polyolefins are especially efficiently free-radically grafted using (fluorinated alkyl)olefins, vinylsilanes or certain carboxylic acids or their esters as the grafting molecules. The use of a solvent to swell the porous polyolefin is sometimes advantageous.Type: ApplicationFiled: July 26, 2001Publication date: June 13, 2002Inventors: Gordon Mark Cohen, Jose Manuel Rodriguez-Parada
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Publication number: 20020010265Abstract: A combination of a low flexural modulus and low crystallinity polyolefin and a functionalized polyolefin were found to result in an olefin composition with excellent adhesion to metals and polar polymers (e.g. polyesters, polyamides, etc) especially fibers therefrom. When these two polyolefins were added to a thermoplastic vulcanizate (e.g. used to partially or fully replace the semicrystalline polyolefin of a thermoplastic vulcanizate), the thermoplastic vulcanizate was found to have the necessary adhesion to form fiber reinforced thermoplastic vulcanizate.Type: ApplicationFiled: December 22, 1998Publication date: January 24, 2002Inventors: JIM JOHNSON, MARVIN HILL
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Patent number: 6331580Abstract: A process and composition for MBS modifiers having (A) a rubbery core, (B) an inner graft stage comprised mainly of a hard polymer, (C) an intermediate sealer stage comprised mainly of an alkyl acrylate monomer and/or a polyunsaturated crosslinker, and (D) an outer shell to provide compatibility of the core-shell polymer with the matrix polymer, is disclosed. A process for preparing MBS impact modifiers having suprisingly improved impact performance in matrix polymers is also disclosed. Articles prepared from blends of matrix polymers and the MBS core-shell polymers described herein are also disclosed.Type: GrantFiled: September 3, 1999Date of Patent: December 18, 2001Assignee: Rohm and Haas CompanyInventor: Linda Katherine Molnar
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Patent number: 6297324Abstract: A cured adhesive tape composition for adhering together roofing materials such as synthetic EPDM rubber and which provides long term water tightness is provided. The adhesive composition includes a) a rubbery polymer comprising a blend of (i) from about 12% or less by weight of the total composition of an ethylene-propylene-diene terpolymer, (ii) a halogenated butyl rubber or a halogenated copolymer of p-methylstyrene and isobutylene, (iii) polyisobutylene, and (iv) a butyl terpolymer, and b) a compatible tackifier, and c) an accelerator/cure package for the rubbery polymer. The cured composition exhibits a peel strength of at least 1000 grams/cm at room temperature, at least 500 grams/cm at 70° C., and supports a static load of at least 300 grams at 70° C.Type: GrantFiled: March 31, 1995Date of Patent: October 2, 2001Assignee: Adco Products, Inc.Inventors: Brian Jonathon Briddell, Dennis Keith Fisher, James Fredrick Wood
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Patent number: 6277913Abstract: There is provided a thermoplastic resin composition and interior or exterior parts for vehicle using thereof, which is excellent in flexibility, surface appearance, heat deformation property at heating and has low tackiness at a high temperature. The thermoplastic resin composition comprises 25 to 90 parts by weight of a (meth)acrylic ester copolymer (X), which is prepared by polymerizing 40 to 95% by weight of a (meth)acrylic ester, 0 to 40% by weight of a vinyl cyanide compound, not more than 60% by weight of an aromatic vinyl compound and 0 to 40% by weight of a monomer copolymerizable therewith, and has a glass transition temperature of not more than 20° C. and a gel content of not more than 50% by weight, 5 to 75 parts by weight of a copolymer (Y), which has a glass transition temperature or a melting point not less than 50° C.Type: GrantFiled: May 21, 1999Date of Patent: August 21, 2001Assignee: Kaneka CorporationInventors: Ikuhiro Mishima, Kazuhito Wada
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Patent number: 6255402Abstract: The invention relates to a process for preparing a composition comprising a vinylaromatic polymer matrix and particles of rubber, which comprises a step of polymerizing at least one vinylaromatic monomer in the presence of a rubber comprising a group which generates a stable free radical. The process makes it possible to obtain morphologies other than salami morphologies, such as the labyrinth, onion or capsule morphology, with the aim, for example, of enhancing the gloss of the high-impact vinylaromatic polymer.Type: GrantFiled: September 18, 1998Date of Patent: July 3, 2001Assignee: AtofinaInventors: Jean-Marc Boutillier, Nathalie Forges
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Patent number: 6255389Abstract: The present invention relates to a curable composition comprising a thermoplastic polyolefin resin and a curable star-branched rubber, a thermoplastic elastomeric vulcanizate obtainable therefrom by dynamically vulcanizing said curable composition in the presence of a suitable curative and shaped articles comprising said vulcanizate.Type: GrantFiled: August 27, 1998Date of Patent: July 3, 2001Assignee: Advanced Elastomer Systems, L.P.Inventors: Trazollah Ouhadi, Donald S. T. Wang, Paul A. Schacht
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Publication number: 20010004659Abstract: In a process for preparing thermoplastic molding compositions byType: ApplicationFiled: December 12, 2000Publication date: June 21, 2001Inventors: Graham Edmund Mc Kee, Falko Ramsteiner, Peter Barghoorn, Michael Breulmann, Norbert NieBner
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Patent number: 6225404Abstract: A thermoplastic compound comprising at least one linear or branched thermoplastic polymer or copolymer, having at least one reactive or graftable site (F1), which polymer is compounded with at least one hyperbranched dendritic polyester macromolecule being composed of a monomeric or polymeric nucleus and one or more monomeric or polymeric branching or spacing chain extenders. The macromolecule is optionally chain terminated and/or functionalized, whereby terminal chain extender functions, chain termination and/or functionalization provides the macromolecule with at least one reactive or graftable site (F2) being reactive to or graftable onto said reactive or graftable site (F1). In a further aspect, the invention relates to a thermoplastic composition comprising two or more components, whereby at least one is said thermoplastic compound. In yet a further aspect, the invention relates to a thermoplastic article made of one or more thermoplastic compounds, whereby at least one is said thermoplastic compound.Type: GrantFiled: March 4, 1999Date of Patent: May 1, 2001Assignee: Perstorp ABInventors: Kent Sorensen, Bo Pettersson, Louis Boogh, Jan-Anders Edvin Mansson
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Patent number: 6187862Abstract: A thermoplastic molding composition comprising a grafted rubber and a copolymeric matrix is disclosed. The composition is characterized in that its grafted rubber includes a substrate, a first grafted phase and a subsequent grafted phase which are sequentially grafted to said substrate. The substrate which contains a crosslinked elastomer is grafted with a first grafted phase and with a subsequent grafted phase, both phases containing copolymers of at least one vinylaromatic monomer and at least one member selected from the group consisting of (meth)acrylonitrile and alkyl (meth)acrylate. The relative ratios of the monomers making up the copolymerized phases differ one from the other. The grafted rubber is present in particulate form having a weight average particle size of about 0.1 to 1.0 microns. The composition features improved impact strength and reduced opacity.Type: GrantFiled: May 1, 1998Date of Patent: February 13, 2001Assignee: Bayer CorporationInventors: Moh Ching Oliver Chang, Richard M. Auclair, Robert A. Sanocki
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Patent number: 6096827Abstract: The present invention relates to a fluorine-containing graft copolymer and its manufacturing method. In particular, the fluorine-containing graft copolymer synthesized by copolymerization of copolymerizable perfluoroalkyl compound as a main chain and macromonomer having copolymerizable vinyl group at one end as branched chains, respectively. Thus the graft copolymer has the remarkable affinity to the substrates designed for the surface modification and superior performance than random copolymers, when it is employed as various types of surface modifiers of fluorine-containing compounds (e.g., water and oil repellent, soil release agents, mold-releasing agents, etc.).Type: GrantFiled: October 8, 1998Date of Patent: August 1, 2000Assignee: Korea Research Institute of Chemica TechnologyInventors: Soo Bok Lee, Dong Kwon Kim, Kwang Won Lee, Kwang Je Kim, In Jun Park
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Patent number: 6087435Abstract: A polystyrene-based resin composition, comprising (A) a styrene-based resin with a mainly syndiotactic configuration, (B) a polyolefin, and (C) rubber polymer particles as main components, exhibits excellent heat resistance and impact resistance.Type: GrantFiled: June 5, 1995Date of Patent: July 11, 2000Assignee: Idemitsu Kosan Co., Ltd.Inventors: Akikazu Nakano, Takashi Sumitomo, Keisuke Funaki, Toshikazu Ijitsu, Michihiro Sawada, Masahiko Kuramoto, Masakazu Suzuki
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Patent number: 6051655Abstract: A composition amenable to injection molding and extrusion comprises a syndiotactic styrene resin, a thermoplastic resin such as a polyolefin and an inorganic filler optionally contains a rubber.Type: GrantFiled: June 5, 1995Date of Patent: April 18, 2000Assignee: Idemitsu Kosan Co., Ltd.Inventors: Akikazu Nakano, Takashi Sumitomo, Keisuke Funaki, Toshikazu Ijitsu, Michihiro Sawada, Masahiko Kuramoto, Masakazu Suzuki
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Patent number: 6046275Abstract: A composition comprises (A) a syndiotactic styrene-based resin and (C) rubber polymer particles such as graft copolymers, butadiene or isoprene block copolymers optionally hydrogenated and/or modified with maleic anhydride, and other rubbers, and, optionally, (B) a thermoplastic resin such as a polycarbonate, and/or (D) a filler such as glass fibers.Type: GrantFiled: June 5, 1995Date of Patent: April 4, 2000Assignee: Idemitsu Kosan Co., Ltd.Inventors: Akikazu Nakano, Takashi Sumitomo, Keisuke Funaki, Toshikazu Ijitsu, Michihiro Sawada, Masahiko Kuramoto, Masakazu Suzuki
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Patent number: 6011088Abstract: Novel organic silicon compounds of formula (1) are provided. ##STR1## R.sup.1 is a monovalent C.sub.1 -C.sub.4 hydrocarbon group, R.sup.2 is a divalent C.sub.2 -C.sub.3 hydrocarbon group, R.sup.3 is a monovalent C.sub.1 -C.sub.2 hydrocarbon group, m is an integer of 3-10, n is equal to 0, 1 or 2, p is equal to 0 or 1, and the sum of n+p is equal to 0, 1 or 2. Inorganic fillers are surface treated with the organic silicon compounds. Compositions comprising EPR and/or EPDM in admixture with the treated inorganic fillers are electrically insulating and have improved oil resistance and mechanical strength.Type: GrantFiled: February 3, 1998Date of Patent: January 4, 2000Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hideyoshi Yanagisawa, Shoji Ichinohe
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Patent number: 6011117Abstract: Disclosed are compositions having as the polymeric component a blend of from about 55 to about 85% by weight of a rubber modified polystyrene and from about 45 to about 15% by weight of at least one thermoplastic styrenic block copolymer. The thermoplastic styrenic block copolymer has a styrene content of at least about 70% by weight.Type: GrantFiled: February 11, 1997Date of Patent: January 4, 2000Assignee: BASF CorporationInventors: Holly L. Perkins, Raymond W. Wilson, Sr.
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Patent number: 5994464Abstract: According to the present invention there is provided a cyanoacrylate adhesive composition having high shear bond strength, peeling bond strength and impact bond strength and superior particularly in hot-cold cycle resistance and heat resistance. The cyanoacrylate adhesive composition contains (a) a cyanoacrylate monomer, (b) an elastomer miscible or compatible with the cyanoacrylate monomer, and (c) a core-shell polymer having a core of a rubbery polymer and a shell of a glassy polymer, the core-shell polymer being compatible but not miscible with the cyanoacrylate monomer.Type: GrantFiled: May 30, 1997Date of Patent: November 30, 1999Assignee: Three Bond., Ltd.Inventors: Nobuo Ohsawa, Hiroyuki Mikuni, Tatsuo Fujii, Hiroshi Takeuchi
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Patent number: 5990220Abstract: A propylene resin composition having suitability to coating is disclosed which comprises (a) 100 parts by weight of a propylene-ethylene block copolymer comprising 60 to 95% by weight of a crystalline polypropylene unit and 5 to 40% by weight of an ethylene-propylene random copolymer unit, (b) 2 to 120 parts by weight of an ethylene-.alpha.-olefin copolymer obtained by polymerization using a metallocene catalyst, containing 20 to 65% by weight of an .alpha.-olefin having 3 to 8 carbon atoms, and having a melt flow rate of 0.5 to 40 g/10 min and a density of 0.85 to 0.90 g/cm.sup.3, (c) 0.1 to 120 parts by weight of a filler selected from talc, mica, and a fibrous filler, (d) 5 to 40% by weight of a propylene polymer having grafted thereto 0.1 to 25% by weight, based on the total polymer, of maleic anhydride or a hydroxyl-containing maleic anhydride derivative, and (e) 0 to 10% by weight of a hydroxyl-terminated diene polymer or a hydrogenation product thereof.Type: GrantFiled: February 6, 1997Date of Patent: November 23, 1999Assignee: Japan Polychem CorporationInventors: Yoshihiro Sobajima, Hironari Fujii, Masashi Shimouse
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Patent number: 5973070Abstract: A polyolefin alloy and a process for making the same which alloy includes (A) 40% to 80% by weight of polypropylene material which may be a polypropylene homopolymer or a propylene copolymer with ethylene and/or butadiene, the polypropylene copolymer including 5 mole % to 35 mole % polymerized ethylene and/or butadiene, the polypropylene material having a molecular weight Mw of 100,000 to 300,000 and a melt index of 0.1 to 20 g/10 min; (B) 1% to 10% by weight of a functionalized polypropylene, which may be a grafted polypropylene homopolymer or a grafted copolymer of propylene with ethylene and/or butadiene, having a degree of grafting of 0.2% to 10% by weight; (C) 1% to 50% by weight of a mineral having a mean particle size of about 2.5 .mu.m and a maximum particle size of about 20 .mu.m, the mineral being surface-treated with 0.Type: GrantFiled: September 18, 1997Date of Patent: October 26, 1999Assignee: Borealis A/SInventor: Henning Baann
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Patent number: 5824741Abstract: This invention relates to impact-resistant thermoplastic moulding compositions based on a graft rubber, a thermoplastic resin and a small quantity of a free acid-functional nitrile rubber.Type: GrantFiled: May 15, 1997Date of Patent: October 20, 1998Assignee: Bayer AGInventors: Burkhard Kohler, Werner Tischer, Rolf-Volker Meyer
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Patent number: 5760105Abstract: There are disclosed a styrenic resin composition which comprises 1 to 95% by weight of a (a) styrenic polymer having syndiotactic configuration (SPS) or modified SPS; 1 to 95% by weight of a (b) thermoplastic resin having a polar group; 1 to 50% by weight of a (c) rubbery elastomer having an affinity for the component (a); and 0.1 to 10% by weight of a (d) compatibilizer having a polar group, a styrenic resin composition same as above except that the component (c) has a polar group capable of reacting with the component (b) as well as an affinity for the component (a) and a styrenic resin composition further comprising 1 to 350% parts by weight of an (e) inorganic filler based on 100 parts by weight of the above resin components. According to the present invention, there are obtained styrenic resin compositions that are well suited for various industrial materials and excellent in rigidity, heat resistance, impact resistance and water resistance.Type: GrantFiled: February 20, 1996Date of Patent: June 2, 1998Assignee: Idemitsu Kosan Co., Ltd.Inventors: Akihiko Okada, Hiroki Fukui
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Patent number: 5747587Abstract: The resin composition for preparing an internal box of a refrigerator according to the present invention comprises (A) a graft polymer obtained by grafting of a monomer mixture comprising a vinyl cyanide compound and an aromatic vinyl compound to a conjugated diene rubber, (B) a graft polymer obtained by grafting a monomer mixture comprising a vinyl cyanide compound and an aromatic vinyl compound to an acrylic rubber, (C) a copolymer of about 40.about.about 50% by weight of a vinyl cyanide compound and about 60.about.about 50% by weight of an aromatic vinyl compound, and (D) a copolymer of about 30.about.about 35% by weight of a vinyl cyanide compound and about 70.about.about 65% by weight of an aromatic vinyl compound.Type: GrantFiled: October 8, 1996Date of Patent: May 5, 1998Assignee: Cheil Industries, Inc.Inventors: Sung-kook Kim, Jin-whan Choi
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Patent number: 5723540Abstract: Elastic-thermoplastic graft polymers manufactured by radical emulsion polymerization of resin-forming vinyl monomers in the presence of rubber present in latex form with the use of a combination of a peroxide of formula (I) ##STR1## where R.sup.1 signifies alkyl, cycloalkyl and aryl groups with 4 to 20 carbon atoms,X the groups --COOH and --SO.sub.3 H as well as their alkali, alkaline-earth or ammonium salts,n an integer in the range from 1 to 6,A alkylene, cycloalkylene and arylene groups with 6 to 40 carbon atomsand a reducing agent as initiator system, a method for their manufacture and their use as moulding compositions.Type: GrantFiled: April 3, 1997Date of Patent: March 3, 1998Assignee: Bayer AGInventors: Herbert Eichenauer, Martin Bohnenpoll, Adolf Schmidt, Heinrich Alberts
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Patent number: 5714264Abstract: The present invention relates to an aqueous powder coating dispersion based on epoxy resins and phenolic curing agents or carboxyl-containing polyesters for the coating of packaging containers, which dispersion consists of a solid, pulverulent component I and an aqueous component II, component I being a powder coating which containsA) at least one epoxy resin having an epoxide equivalent weight of from 300 to 5500 andB) at least one curing agent having more than one phenolic hydroxyl group per molecule and a hydroxyl equivalent weight, based on phenolic OH groups, of from 100 to 500, preferably from 200 to 300, orC) at least one polyester having an acid number of from 25 to 120 mg of KOH/g and an OH number >10 mg of KOH/g, andD) at least one epoxy resin having an epoxide equivalent weight of from 400 to 3000, and component II being the aqueous component of the dispersion which contains at least one nonionic or anionic thickener.Type: GrantFiled: October 18, 1995Date of Patent: February 3, 1998Assignee: BASF Lacke & Farben, AGInventors: Lawrence Sacharski, Peter D. Clark, Joachim Woltering
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Patent number: 5708082Abstract: In a process for preparing a styrenic resin, a rubber graft copolymer (A) having a weight average particle size of 0.05-0.8 .mu.m by coagulation and drying of a rubber graft copolymer latex (a). The rubber graft copolymer latex (a) is made from graft polymerization of a vinyl aromatic monomer and a vinyl cyanide monomer in the presence of a butadienic rubber latex. The styrenic resin is then prepared by a continuous bulk or solution polymerization method. The method comprises continuously charging 80 to 45 parts by weight of a vinyl aromatic monomer, 15 to 50 parts by weight of a vinyl cyanide monomer, 0 to 40 parts by weight of a copolymerizable monomer (totally 100 parts by weight of monomers), 0.1 to 6 parts by weight of the rubber graft copolymer based on 100 parts by weight of monomers and 0.Type: GrantFiled: July 8, 1996Date of Patent: January 13, 1998Assignee: Chi Mei CorporationInventor: Shao-Chiu Huang
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Patent number: 5708081Abstract: The invention relates to polymer compositions of high impact strength, comprising a vinylaromatic polymer and a rubber, and to a process for their manufacture.These compositions are obtained by virtue of the use of two polybutadienes whose viscosities, measured at 25.degree. C. at a concentration of 5% in styrene, are, respectively, between 120 and 350 centipoises in the case of one and between 30 and 90 centipoises in the case of the other.Type: GrantFiled: June 12, 1995Date of Patent: January 13, 1998Assignee: Elf Atochem S. A.Inventors: Tarek Sarraf, Thomas Edward Jenkins
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Patent number: 5574100Abstract: A polymer composition comprising [A] a polymer selected from a copolymer of .alpha.-olefin having at least 2 carbon atoms and a specific cyclic olefin, a ring-opening polymer of said specific cyclic olefin and a hydroganted, ring-opening polymer thereof and [B] a core-shell elastomer containing 40 to 85 parts of weight of a core component which comprises a styrene-butadiene copolymer and 15 to 60 parts by weight of a shell component which comprises a copolymer of an acrylate or methacrylate having a specific cyclic structure, a monovinyl aromatic monomer, other monovinyl monomer and a plyfunctional monomer. This polymer composition is excellent in transparency and impact resistance.Type: GrantFiled: March 9, 1995Date of Patent: November 12, 1996Assignees: Mitsui Petrochemical Industries, Ltd., Hoechst AktiengesellschaftInventors: Toshihiro Sagane, Masayuki Okabe, Masahiro Kishine
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Patent number: 5567769Abstract: Homogeneous polymer blends are prepared from otherwise thermodynamically immiscible polymers, especially including block copolymers. Thus, polymers such as polystyrene/poly(methyl methacrylate) block copolymer or polystyrene/poly(1,2-butadiene) block copolymer are dissolved under pressure in supercritical fluid solvents such as chlorodifluoromethane and n-butane, respectively, and expanded through a fine nozzle. As the SCF solvent evaporates, the polymer deposits as a substantially homogeneous material.Type: GrantFiled: January 30, 1995Date of Patent: October 22, 1996Assignees: The Procter & Gamble Company, The Univ. of DelawareInventors: Annette D. Shine, Steven D. Smith, Isao Noda
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Patent number: 5543462Abstract: The present invention relates to an impact resistant polystyrene composition which comprises an (A) styrenic polymer having syndiotactic configuration and a (B) rubbery elastomer modified by a modifier having a polar group, or to an impact resistant polystyrene composition which comprises the aforesaid composition and a (C) rubbery elastomer and/or a (D) poly(phenylene ether).The polystyrene compositions according to the present invention are excellent in heat resistance, modulus of elasticity, impact resistance and extensibility and thus are expected to find effective use for molding electric and electronic materials, industrial construction materials, automobile part, domestic electrical appliances, industrial materials such as various machine parts, etc.Type: GrantFiled: November 2, 1994Date of Patent: August 6, 1996Assignee: Idemitsu Kosan Co., Ltd.Inventors: Akihiko Okada, Nobuyuki Sato
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Patent number: 5540989Abstract: The invention relates to a recycable, heat-sealable plastic film for hermetically sealing plastic containers, comprising at least two layers which mutually adhere, (i) a support layer comprised of an impact resistant polystyrene resin and (ii) a sealing layer consisting essentially of: a) 20-100 weight % of a copolymer P consisting essentially of:(p1) 20-90 weight % methyl methacrylate and/or ethyl methacrylate;(p2) 10-80 weight % of at least one monomer of formula I ##STR1## where R.sub.1 represents an C.sub.3-24 alkyl group; and (p3) 0-10 weight %, preferably 1-8 weight %, of a monomer which is copolymerizable with and different from the monomers (p1) and (p2); and(b) 0-80 weight % of a block copolymer containing styrene blocks.Type: GrantFiled: February 14, 1995Date of Patent: July 30, 1996Assignee: Roehm GmbH Chemische FabrikInventors: Jurgen Maul, Werner Siol, Ulrich Terbrack
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Patent number: 5541256Abstract: A process for preparing a synthetic resin powder having an improved blocking resistance suitable as a modifier for vinyl chloride resins, which comprises coagulating an aqueous latex of a graft copolymer suitable as a modifier for vinyl chloride resins, mixing the resulting, slurry with a latex of a specific polymer of methyl methacrylate, an aromatic vinyl compound, a crosslinkling monomer and optionally other copolymerizable monomers or a slurry formed from the specific polymer latex by coagulation, and recovering a powder from the resulting mixture containing the coagulated graft copolymer and the coagulated specific polymer.Type: GrantFiled: June 17, 1994Date of Patent: July 30, 1996Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Akira Takaki, Toshiyuki Mori, Toshiro Shimatani, Toshihiko Hasegawa
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Patent number: 5492760Abstract: A cross-linkable polymer composition containing a cross-linkable polymer having at least one hydrolysable silane group, a silanol condensation catalyst and a polybutadiene. The composition provides a cross-linked polymer having good water tree resistance properties, for use as insulation in electrical cables.Type: GrantFiled: December 5, 1994Date of Patent: February 20, 1996Assignee: AT Plastics Inc.Inventors: Haridoss Sarma, Alexander Shaikevitch
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Patent number: 5466749Abstract: Graft copolymers comprising a poly-alpha-olefin base polymer selected from the group consisting of polyethylene, polypropylene, polystyrene, and compatible mixtures thereof, having grafted thereto an olefinic monomer. The grafted monomer is present in an amount effective to increase the amount of protein that will bind to the graft copolymer as compared with the base polymer.Also disclosed are polymer/protein compositions comprising a graft copolymer having a protein immobilized on the surface thereof, processes for the preparation of the above-described graft copolymers and compositions, methods of immobilizing proteins, and methods of immunoassay based on such immobilization.Type: GrantFiled: September 14, 1994Date of Patent: November 14, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Patrick L. Coleman, Steven L. Kangas, Thomas A. Kotnour
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Patent number: 5466747Abstract: Graft copolymers comprising a poly-alpha-olefin base polymer selected from the group consisting of polyethylene, polypropylene, polystyrene, and compatible mixtures thereof, having grafted thereto an olefinic monomer. The grafted monomer is present in an amount effective to increase the amount of protein that will bind to the graft copolymer as compared with the base polymer. Also disclosed are polymer/protein compositions comprising a graft copolymer having a protein immobilized on the surface thereof, processes for the preparation of the above-described graft copolymers and compositions, methods of immobilizing proteins, and methods of immunoassay based on such immobilization.Type: GrantFiled: September 26, 1994Date of Patent: November 14, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Patrick L. Coleman, Steven L. Kangas, Thomas A. Kotnour
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Patent number: 5459174Abstract: A radiation curable functionalized polymer is disclosed. The functionalized polymer is a copolymer of an isoolefin of 4 to 7 carbon atoms and para-alkylstyrene, wherein the para-alkylstyrene is functionalized with an acrylate or a mixture of acrylates and/or a photosensitizer and/or other functional groups at the para-alkyl groups of the para-alkylstyrene.Type: GrantFiled: June 24, 1994Date of Patent: October 17, 1995Inventors: Natalie A. Merrill, Hsian-Chang Wang, Anthony J. Dias
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Patent number: 5428105Abstract: A curable polyester molding composition incorporating an elastomeric low profile additive dispersed in voided rubbery particle form throughout the composition is used in association with a compatibilizing agent to form a molded thermoset article having very smooth, light reflective, class A surfaces and having a matrix fracture energy which is comparable to articles formed from similar or identical molding compositions which are free of low profile additives. The low profile additive is an epoxidized elastomer or block copolymer having at least one flexible elastomer block and one monovinyl aromatic block. The compatibilizing agent is a copolymer having a diene polymer backbone which is compatible with the elastomer or the flexible diene block of the low profile additive, with constituents which are compatible or reactive with the polyester being grafted or adducted onto the diene polymer backbone.Type: GrantFiled: October 26, 1994Date of Patent: June 27, 1995Assignee: GenCorp Inc.Inventors: Frederick J. McGarry, Mary B. Chan-Park
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Patent number: 5412027Abstract: Homogeneous polymer blends are prepared from otherwise thermodynamically immiscible polymers, especially including block copolymers. Thus, polymers such as polystyrene/poly(methyl methacrylate) block copolymer or polystyrene/poly(1,2-butadiene) block copolymer are dissolved under pressure in supercritical fluid solvents such as chlorodifluoromethane and n-butane, respectively, and expanded through a fine nozzle. As the SCF solvent evaporates, the polymer deposits as a substantially homogeneous material.Type: GrantFiled: November 19, 1993Date of Patent: May 2, 1995Assignees: The Procter & Gamble Company, The Univ. of DelewareInventors: Annetta D. Shine, Steven D. Smith, Isao Noda
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Patent number: 5364907Abstract: Graft copolymers comprising a poly-alpha-olefin base polymer selected from the group consisting of polyethylene, polypropylene, polystyrene, and compatible mixtures thereof, having grafted thereto an olefinic monomer. The grafted monomer is present in an amount effective to increase the amount of protein that will bind to the graft copolymer as compared with the base polymer.Also disclosed are polymer/protein compositions comprising a graft copolymer having a protein immobilized on the surface thereof, processes for the preparation of the above-described graft copolymers and compositions, methods of immobilizing proteins, and methods of immunoassay based on such immobilization.Type: GrantFiled: June 2, 1993Date of Patent: November 15, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Patrick L. Coleman, Steven L. Kangas, Thomas A. Kotnour
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Patent number: 5356955Abstract: Stable aqueous artificial latices having a core-shell structure are prepared from two otherwise incompatible polymers in a blend also including a copolymer of said polymers. For example, an artificial latex in which the particles have a styrene-acrylonitrile core and an EPDM shell can be prepared.Type: GrantFiled: November 23, 1992Date of Patent: October 18, 1994Assignee: General Electric CompanyInventors: Marinus E. J. Dekkers, Mary E. Adams
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Patent number: 5352739Abstract: This invention relates to a compatibilized rubber composition and a process for compatibilizing polar/nonpolar rubber blends comprising blending compatiblizers such as ethylene/vinyl acetate copolymer, ethylene/methacrylate copolymer EPDM or EP rubber grafted with a polar monomer such as methyl methacrylate.Type: GrantFiled: November 6, 1992Date of Patent: October 4, 1994Assignee: Exxon Chemical Patents Inc.Inventor: Palanisamy Arjunan
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Patent number: 5352727Abstract: There are disclosed a polystyrene composition which comprises 100 parts by weight of a resin component comprising 0 to 99% by weight of syndiotactic polystyrene (SPS) (a) and 100 to 1% by weight of a modified syndiotactic polystrene (SPS) (b) and 1 to 100 parts by weight of a rubbery elastomer which can react with the functional group of the component (b) as the component (c) and optionally, 1 to 350 parts by weight of an inorganic filler (e); and a polystyrene composition which comprises 100 parts by weight of a resin component comprising 0 to 99% by weight of the component (a) and 100 to 1% by weight of the component (b), 1 to 10 parts by weight of the component (c) and 1 to 100 parts by weight of a rubbery elastomer (d) and optionally, 1 to 350 parts by weight of an organic filler (e). The above compositions are greatly improved in impact resistance, elongation and retention of physical properties during recycling without detriment to heat resistance and modulus of elasticity.Type: GrantFiled: September 9, 1993Date of Patent: October 4, 1994Assignee: Idemitsu Kosan Co., Ltd.Inventor: Akihiko Okada
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Patent number: 5290876Abstract: A grafted copolymer containing low cis-polybutadiene having a Mooney viscosity of 30 to 40 as a rubber component, and 30% by volume or more of particles of said rubber component becoming non-spherical rubber particles when molded into a molded article, is suitable for use as a low gloss agent which is usable in the fields of internal and external automotive trims, exterior parts of household electric appliances, etc.Type: GrantFiled: January 22, 1993Date of Patent: March 1, 1994Assignee: Hitachi Chemical Company, Ltd.Inventors: Seizou Mishima, Kiyotaka Mashita, Kazuyoshi Shike, Jun Matsuzawa, Masashi Shitara, Isamu Hattori
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Patent number: 5284913Abstract: A methacrylimide-containing polymer comprising a polymer (A) comprised of 5-100 weight % of units represented by the formula (I): ##STR1## wherein R is H or a C1-20 hydrocarbon group, and 0-95 weight % of units derived from an ethylenic monomer, wherein a polymer derived from at least one ethylenic monomer has been grafted onto the polymer (A). The methacrylimide-containing polymer is used as a blend with another thermoplastic polymer.Type: GrantFiled: January 21, 1992Date of Patent: February 8, 1994Assignee: Mitsubishi Rayon Company Ltd.Inventors: Isao Sasaki, Kozi Nishida, Masaharu Fujimoto
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Patent number: RE37683Abstract: A cured adhesive tape composition for adhering together roofing materials such as synthetic EPDM rubber and which provides long term water tightness is provided. The adhesive composition includes substantially equal amounts by weight of a) a rubbery polymer comprising a blend of an ethylene-propylenediene terpolymer, a halogenated butyl rubber or a halogenated copolymer of p-methylstyrene and isobutylene, and polyisobutylene b) a compatible tackifier, and c) an accelerator/cure package for the rubbery polymer. The cured composition exhibits a peel strength of at least 715 grams/cm at room temperature, at least 300 grams/cm at 70° C., and supports a static load of at least 300 grams at 70° C.Type: GrantFiled: January 26, 2001Date of Patent: April 30, 2002Assignee: Adco Products, Inc.Inventors: Brian J. Briddell, Michael J. Hubbard