Specified Material Contains A Transition Metal Atom Patents (Class 525/268)
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Publication number: 20040157990Abstract: The invention relates to a method of preparing a block copolymer, the first block of which is a polymer or a copolymer having at least one diene and the second block of which is a polymer with a polar monomer. The inventive method is characterised in that: first, the polymerisation or the copolymerisation of the first block is carried out in the presence of a catalyst comprising the product of the reaction of a rare earth alcoholate and an alkylating agent selected from among organolithiums, organomagnesiums, organozincs, organoaluminiums and borons; and, secondly, the copolymerisation of the polar monomer is performed with the first block in the presence of the same catalyst. The invention also relates to a block copolymer consisting of a first block comprising a polmyer or a linear copolymer having at least one diene and a second block comprising a polymer presenting several hydroxy, epoxy and/or alkoxysilyl functions.Type: ApplicationFiled: April 7, 2004Publication date: August 12, 2004Inventors: Jean-Francois Carpentier, Jerome Gromada, Frederic Leising, Andre Mortreux
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Patent number: 6747098Abstract: The present invention provides highly branched block copolymers comprising branched soft segments with a low glass-transition temperature (Tg) and hard segments with a high Tg or crystalline melting point that exhibit thermoplastic elastomeric properties. More particularly the invention provides a highly branched block copolymer of a polyisoolefin and a polymonovinylidene arene characterized by having thermoplastic elastomeric properties wherein the aforesaid block copolymer comprises a highly branched polyisoolefin block and some of the branches of the aforesaid polyisoolefin block terminate in polymonovinylidene arene endblocks.Type: GrantFiled: May 29, 2002Date of Patent: June 8, 2004Assignee: The University of Western OntarioInventors: Judit E. Puskas, Christophe Paulo, Prince Antony
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Patent number: 6730744Abstract: The invention concerns a method for preparing block copolymers comprising steps which consist in: polymerising a first monomer using an organolanthanide catalyst wherein said catalyst in the form of a hydride complex of a trivalent metal from the group of rare earths; then in polymerising at least a second monomer. The invention also concerns block copolymers whereof the blocks are polyolefins.Type: GrantFiled: July 15, 2002Date of Patent: May 4, 2004Assignee: AtofinaInventors: Guillaume Desurmont, Hajime Yasuda, Jean Malinge
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Patent number: 6713565Abstract: It has been unexpectedly discovered that cis-1,4-polybutadiene that is synthesized utilizing Zeigler-Natta catalyst systems has superior characteristics for utilization in solid golf ball cores if the polymerization is terminated utilizing a carboxylic acid of the structural formula RCOOH, wherein R represents an alkyl group containing from 1 to about 30 carbon atoms.Type: GrantFiled: June 17, 2002Date of Patent: March 30, 2004Assignee: The Goodyear Tire & Rubber CompanyInventors: Craig William Burkhart, Michael Lester Kerns, Kenneth Floyd Castner, Michael Joseph Rachita, Michael Paul Mallamaci
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Patent number: 6713228Abstract: Provided are alkenyl ether-based monomers having multi-ring structure, and photosensitive polymers and resist compositions obtained from the same. The photosensitive polymer includes a monomer unit represented by the following formula: wherein R4 and R5 are independently -H or -CH3, and R4 are independently -H, -OH or a alkyl group having 1-20 carbon atoms.Type: GrantFiled: April 24, 2002Date of Patent: March 30, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Woo Kim, Sang-Gyun Woo, Sung-Ho Lee
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Patent number: 6682809Abstract: The present invention relates to: a method of preparing a capstock layer that includes a comb copolymer; a method of preparing a multi-layered polymeric composite, one layer of which is a capstock layer; and a capstock layer and a multi-layered composite formed, respectively, thereby.Type: GrantFiled: September 13, 2001Date of Patent: January 27, 2004Assignee: Rohm and Haas CompanyInventor: Paul Ralph Van Rheenen
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Patent number: 6576722Abstract: The present invention is directed to a method for producing a copolymer and a copolymer product of the method. The copolymer is prepared by a controlled radical polymerization process, typically an atom transfer radical polymerization process, in which polymerizable alkene monomers are polymerized in the presence of a halogenated polyolefin macroinitiator. The copolymer product of this process is useful in a film-forming composition that adheres strongly to polyolefinic substrates and to which non-polyolefinic film-forming compositions strongly adhere. The copolymer can be applied to a substrate in an adhesion-promoting layer or can be incorporated into a film-forming composition, such as a primer, that contains additional resinous compounds.Type: GrantFiled: December 13, 2000Date of Patent: June 10, 2003Assignee: PPG Industries Ohio, Inc.Inventors: Simion Coca, Brian K. Rearick, James B. O'Dwyer
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Patent number: 6566453Abstract: A highly uniform vinyl compound polymer-cross-copolymerized olefin/styrene/diene copolymer excellent in processability, mechanical properties, high temperature properties, compatibility and transparency, and its composition and a process for its production, are provided. This copolymer is a crossed polymer obtained by cross-copolymerizing an olefin/styrene/diene copolymer having a styrene content of from 0.03 mol % to 96 mol %, a diene content of from 0.0001 mol % to 3 mol % and the rest being an olefin, with an olefin/aromatic vinyl compound copolymer.Type: GrantFiled: May 14, 2001Date of Patent: May 20, 2003Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Toru Arai, Masataka Nakajima, Toshiaki Otsu
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Patent number: 6566463Abstract: This invention provides the multifunctional coagents of the metallic salt of unsaturated carboxylic acid that obtained by the reaction from two mols of mono-basic acid and two mols of di-basic acid as an unsaturated carboxylic acid, and three mols of divalent metal oxide. For making these multifunctional coagents of metallic salt of unsaturated carboxylic acid, one kind or two kinds of mono-basic acid can be used among acrylic acid and methacrylic acid as an unsaturated carboxylic acid. As a di-basic acid, only one kind can be used among maleic acid and fumaric acid. And, as a metal complex for making this multifunctional metallic coagents, the divalent metal oxide such as zinc oxide, magnesium oxide and calcium oxide that can be used. One kind or two and over kinds of metal oxide can be used.Type: GrantFiled: November 14, 2001Date of Patent: May 20, 2003Inventor: In Hong Hwang
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Publication number: 20030087982Abstract: A method of modifying a polymeric material which comprises the steps of activation-treatment and a hydrophilic polymer-treatment, or comprises the steps of activation-treatment, a hydrophilic polymer-treatment, and monomer grafting in this order, or comprises the step of a solvent-treatment followed by these steps. Thus, the polymeric material, e.g., polyolefin, is improved in hydrophilicity, adhesion, etc. without lowering the practical strength thereof The polymeric material thus improved in adhesion and other properties can be used in many applications where water absorption and adhesion are required, such as an absorption material, e.g., a wiping/cleansing material, a water retention material, a material for microorganism culture media, a separator for batteries (or cells), a synthetic paper, a filter medium, a textile product for clothing, a medical/sanitary/cosmetic supply, and reinforcing fibers for composite materials.Type: ApplicationFiled: August 27, 2001Publication date: May 8, 2003Inventor: Hitoshi Kanazawa
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Patent number: 6559234Abstract: The present invention firstly provides a novel olefin/styrene/diene type cross-copolymer having excellent physical properties and mechanical properties, and a novel, efficient and economically excellent process for its production. Further, it provides an efficient and economically excellent process for producing various cross-copolymers such as an olefin/diene type cross-copolymer. The present invention secondly provides various resin compositions or processed products containing cross-copolymers, having problems of various conventional resin compositions or processed products solved and improved, as applications of cross-copolymers of the present invention.Type: GrantFiled: May 17, 2001Date of Patent: May 6, 2003Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Toru Arai, Masataka Nakajima, Toshiaki Otsu
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Patent number: 6518379Abstract: In a process for polymerizing dienes in a solvent comprising vinylaromatic monomers, the polymerization is carried out in the presence of a metal compound of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo or W as catalyst and a Lewis acid as cocatalyst and, if desired, an alkylating agent and, if desired, a regulator. This process can be used for preparing high-impact polystyrene, acrylonitrile-butadiene-styrene copolymers or methyl methacrylate-butadiene-styrene copolymers.Type: GrantFiled: November 14, 2001Date of Patent: February 11, 2003Assignee: BASF AktiengesellschaftInventors: Stephan Jüngling, Christian Schade, Hermann Gausepohl, Volker Warzelhan, Rainer Moors, Hansjörg Schäch, Joachim Queisser, Gerrit Luinstra, Jürgen Demeter
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Publication number: 20020160303Abstract: Provided are alkenyl ether-based monomers having multi-ring structure, and photosensitive polymers and resist compositions obtained from the same.Type: ApplicationFiled: April 24, 2002Publication date: October 31, 2002Applicant: Samsung Electronics Co., Ltd.Inventors: Hyun-Woo Kim, Sang-Gyun Woo, Sung-Ho Lee
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Publication number: 20020161130Abstract: A highly uniform vinyl compound polymer-cross-copolymerized olefin/styrene/diene copolymer excellent in processability, mechanical properties, high temperature properties, compatibility and transparency, and its composition and a process for its production, are provided. This copolymer is a crossed polymer obtained by cross-copolymerizing an olefin/styrene/diene copolymer having a styrene content of from 0.03 mol % to 96 mol %, a diene content of from 0.0001 mol % to 3 mol % and the rest being an olefin, with an olefin/aromatic vinyl compound copolymer.Type: ApplicationFiled: February 21, 2002Publication date: October 31, 2002Applicant: Denki Kagaku Kogyo Kabushiki KaishaInventors: Toru Arai, Toshiaki Otsu, Masataka Nakajima
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Patent number: 6462114Abstract: A process for forming a microgel which comprises a crosslinked core and a multiplicity of linear polymeric arms attached to the core, wherein the process comprises (a) first forming a halogen atom terminated prepolymer with a weight average molecular weight from 1,000 to 25,000 by polymerizing monoethylenically unsaturated monomers in the presence of an organic sulfonyl halide, an organic complexing agent and a transition metal (i.e., Cu, Ru, Ni, Re, Pd, Fe, or Rh); and (b) subsequently polymerizing the prepolymer with a mixture of monoethylenically unsaturated monomers and 0.5 to 60 mole percent, based on the total moles of monomer and prepolymer, of multi-olefinic polymerizable monomers to form a microgel with a weight average molecular weight of 10,000 to 100,000,000 and crosslinked core.Type: GrantFiled: October 3, 2001Date of Patent: October 8, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Charles T. Berge, Michael Fryd, Jeffrey W. Johnson, Graeme Moad, Ezio Rizzardo, Christopher Scopazzi, San Hoa Thang
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Patent number: 6376614Abstract: The present invention provides resin materials endowed with excellent heat resistance, solvent resistance, tensile elongation, toughness, and transparency. Specifically, there are provided an ethylene copolymer having a vinyl group attributed to a diene monomer in the molecular chain and comprising an aromatic vinyl monomer (A), ethylene (B) and a diene monomer (C), and an aromatic vinyl graft copolymer which is a graft copolymerization product of an aromatic vinyl monomer (H) and an ethylene copolymer macromer (I).Type: GrantFiled: October 23, 1998Date of Patent: April 23, 2002Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Hideo Teshima, Masanori Sera
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Publication number: 20020045712Abstract: A propylene polymer composition comprising a propylene polymer prepared by using a zirconocene catalyst having two aryl-substituted indenyl group and having a melt flow rate (MFR) of 0.01 to 30 g/10 min and a second propylene polymer prepared by using a zirconocene catalyst having a melt flow rate (MFR) of 30 to 1,000 g/l 0 min and, if desired, a soft polymer, a ratio of the MFR of the second propylene polymer to the MFR of the second propylene polymer being not less than 30. These propylene polymer compositions are excellent in heat resistance, mechanical strength, tensile elongation at break, etc., and hence they can be favorably used for various structural materials such as those of automobile and electrical appliances, daily necessaries, various films and sheets.Type: ApplicationFiled: October 11, 2001Publication date: April 18, 2002Inventors: Mikio Hashimoto, Takasi Ueda, Masaaki Kawasaki, Satoru Moriya, Akira Mizuno, Daisuke Fukuoka, Junichi Imuta, Keiji Hirose, Junji Saito, Yoshihisa Kiso
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Publication number: 20020042472Abstract: A class of relatively high molecular weight, high density ethylene polymers (HMW-HDPE) is disclosed capable of being formed into thin films of high strength, such polymers having a density of at least about 0.935 g/cc, a flow index (I21) no higher than about 15 g/10 min., a melt flow ratio (MFR) of at least about 65, and a dynamic elasticity at 0.1 rad./sec. of no higher than about 0.7 at a corresponding complex viscosity at 0.1 rad./sec. no higher than about 14E5, i.e., about 14×105 poises.Type: ApplicationFiled: October 2, 2001Publication date: April 11, 2002Inventors: S. Christine Ong, Sandra D. Schregenberger, Pradeep P. Shirodkar
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Publication number: 20020042488Abstract: Novel substantially random functionalized interpolymers and processes for making them are disclosed. The novel interpolymers include those prepared from ethylene and vinyl aromatic monomers such as ethylene-styrene interpolymers which are then functionalized with a variety of electrophilic and nucleophilic reagents.Type: ApplicationFiled: January 10, 2001Publication date: April 11, 2002Inventors: Ray E. Drumright, Robert H. Terbrueggen, Kenneth A. Burdett, Francis J. Timmers, Stephen F. Hahn
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Publication number: 20020037988Abstract: Novel substantially random functionalized interpolymers and processes for making them are disclosed. The novel interpolymers include those prepared from ethylene and vinyl aromatic monomers such as ethylene-styrene interpolymers which are then functionalized with a variety of electrophilic and nucleophilic reagents.Type: ApplicationFiled: October 10, 2001Publication date: March 28, 2002Inventors: Ray E. Drumright, Robert H. Terbrueggen, Kenneth A. Burdett, Francis J. Timmers, Stephen F. Hahn
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Publication number: 20020010280Abstract: A thermoplastic elastomer produced without a hydrogenation step is functionalized utilizing a free radical initiator and a functionalizing monomer having at least one point of unsaturation. The base polymers can be produced by copolymerizing an &agr;-olefin capable of producing an amorphous backbone with a comonomer which provides a “hook” for grafting to with a living polystyrene chain. Another method is to copolymerize an &agr;-olefin monomer system capable of producing an amorphous backbone with a comonomer containing a functional group from which an anionically polymerizable monomer is grown from the backbone. A third method involves copolymerizing an &agr;-olefin monomer system capable of giving an amorphous backbone with an olefin-terminated polystyrene comonomer. In a less preferred embodiment, a conventional EPDM polymer can be metallated and a monoalkenyl aromatic compound anionically polymerizable monomer grown from the backbone.Type: ApplicationFiled: June 1, 2001Publication date: January 24, 2002Inventors: Bridget Ann Spence, Ronald James Hoxmeier, Robert Charles Job
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Patent number: 6316546Abstract: A class of relatively high molecular weight, high density ethylene polymers (HMW-HDPE) is disclosed capable of being formed into thin films of high strength, such polymers having a density of at least about 0.925 g/cc, a flow index (I21) no highier than about 15 g/10 min., a melt flow ratio (MFR) of at least about 65, and a dynamic elasticity at 0.1 rad./sec. of no higher than about 0.7 at a corresponding complex viscosity at 0.1 rad./sec. no highier than about 14E5, i.e., about 14×105 poises. The ethylene polymer is a bimodal blend of relatively high molecular weight (HMW) and low molecular weight (LMW) ethylene polymers.Type: GrantFiled: June 28, 1993Date of Patent: November 13, 2001Assignee: ExxonMobil Oil CorporationInventors: S. Christine Ong, Sandra D. Schregenberger, Pradeep P. Shirodkar
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Patent number: 6313252Abstract: Novel substantially random functionalized interpolymers and processes for making them are disclosed. The novel interpolymers include those prepared from ethylene and vinyl aromatic monomers such as ethylene-styrene interpolymers which are then functionalized with a variety of electrophilic and nucleophilic reagents.Type: GrantFiled: February 4, 1999Date of Patent: November 6, 2001Assignee: The Dow Chemical CompanyInventors: Ray E. Drumright, Robert H. Terbrueggen, Kenneth A. Burdett, Francis J. Timmers, Stephen F. Hahn
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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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Publication number: 20010012562Abstract: A laminating propylene/1-butene random copolymer composition comprising a propylene/1-butene random copolymer and a low-density polyethylene in a specified proportion. With respect to the propylene/1-butene random copolymer, the content of structural units derived from propylene, content of structural units derived from 1-butene, MFR, Mw/Mn and B-value as a parameter indicating the randomness of copolymer monomer chain distribution fall within specified ranges. With respect to the low-density polyethylene, the MFR and density fall within specified ranges. The invention also provides a composite film comprising a substrate film such as a crystalline polypropylene film and, laminated onto at least one side thereof, a resin layer of the above composition having a thickness of 2 to 200 &mgr;m. The above composition is excellent in laminate moldability and enables producing a composite film having excellent low-temperature sealing properties, blocking resistance and hot tack.Type: ApplicationFiled: February 13, 2001Publication date: August 9, 2001Applicant: Mitsui Chemicals, Inc.Inventors: Norihiko Nakagawa, Masahiro Sugi, Yasuo Tanaka
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Patent number: 6239242Abstract: There are a number of recent developments relating to co- and homo-polymers of vinyl aromatic monomers. There are syndiotactic polymers of styrene, there are pseudo random polymers of styrene and ethylene. The present invention seeks to provide novel pseudoblock polymers of styrene and ethylene in which at least 10 weight % of the vinyl aromatic monomer is incorporated in the form of one or more atactic pseudoblocks.Type: GrantFiled: August 21, 1999Date of Patent: May 29, 2001Assignee: Nova Chemicals CorporationInventors: Qinyan Wang, Patrick Lam
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Patent number: 6231804Abstract: A high molecular weight polyethylene prepared by preliminary polymerization is added at the time of main polymerization of an olefin, for example, propylene, to prepare an olefin (co)polymer composition comprising the above high molecular weight polyethylene finely dispersed as fine particles in the polyolefin, such as polypropylene, and a cross-linked structure is formed in the olefin (co)polymer composition. This process can provide a modified olefin (co)polymer composition improved in the strength in a molten state in terms of melt tension or the like and in crystallization temperature and excellent in moldability such as high-speed producibility, and a molded modified olefin (co)polymer composition excellent in properties such as heat resistance and rigidity.Type: GrantFiled: October 1, 1999Date of Patent: May 15, 2001Assignee: Chisso CorporationInventors: Akira Yamauchi, Shingo Kikukawa, Jun Saito, Hitoshi Sato
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Patent number: 6221974Abstract: The invention relates to a process for the preparation of a creep-resistant polypropylene by means of the following steps: (a) copolymerizing propylene and ethylene into a random copolymer at 40 to 110° C. using: a catalyst system of the above-mentioned type; a portion of ethylene or C4-C10-&agr;-olefin leading to 1.0 to 10.0% by weight of ethylene repeating units in said random copolymer; and no or a minimal amount of hydrogen leading to a MFR10 value of between 0.01 and 5.0 g/10 min for said random copolymer, if this step is performed first, or to a MFR2 value for said polypropylene of between 0.05 and 0.40 g/10 min, if this step is performed after step (b); the proportion of random copolymer of this step being from 20 to 80% by weight of said polypropylene, (b) polymerizing propylene at 40 to 110° C. using: a catalyst system of the above-mentioned type; no or a minimal portion of ethylene leading to 0.0 to 1.Type: GrantFiled: December 21, 1998Date of Patent: April 24, 2001Assignee: Borealis Technology OyInventors: Mika Härkönen, Bo Malm, Anders Nymark
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Patent number: 6207775Abstract: The present invention relates to a process for preparing a filled polymer composite comprising from 1 to 98 percent by weight of an interpolymer and from 2 to 99 percent by weight of a filler, said process comprising copolymerization in the presence of a cyclopentadienyl-containing transition metal catalyst and a filler, said filler having immobilized thereon a suitable cocatalyst.Type: GrantFiled: August 27, 1998Date of Patent: March 27, 2001Assignee: The Dow Chemical CompanyInventors: Miguel García Martí, Michael Alexandre, Philippe G. Dubois, Robert J. E. G. Jérô ;me, François J. Hindryckx
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Patent number: 6194520Abstract: A class of relatively high molecular weight, high density ethylene polymer blends is disclosed capable of being blow molded with excellent processability into articles, e.g., bottles, of superior mechanical and other properties, such blends having a density of at least about 0.930 g/cc, a flow index (I21) of at least about 2 g/10 min., a melt flow ratio (MFR) of at least about 60, and a polydispersity index of at least about 8, the polymers of said blend consisting essentially of at least about 0.3 weight fraction of a relatively high molecular weight (HMW) component having a density of at least about 0.900 g/cc, a flow index or high load melt index (I21) of at least about 0.2 g/10 min., and a flow ratio (FR) at least about 10, and a relatively low molecular weight (LMW) component having a density of at least about 0.930 g/cc and a melt index (I2) no greater than about 1000 g/10 min.Type: GrantFiled: June 28, 1993Date of Patent: February 27, 2001Assignee: Mobil Oil CorporationInventors: Subrahmanyam Cheruvu, Thomas E. Nowlin, S. Christine Ong, Giyarpuram N. Prasad, Paul P. Tong
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Patent number: 6136743Abstract: The invention provides catalysts which have a high polymerization activity, enable the obtaining of olefin polymers of wide molecular weight distribution, and which comprise (a)(a-1) a metallocene compound or (a-2) a titanium catalyst component containing magnesium, titanium, and halogen, (b) a compound of a transition metal from Groups 8 to 10 of the periodic table and is of the general formula shown below, and a cocatalyst component. ##STR1## The invention also provides olefin polymer compositions excellent in rigidity and impact resistance which can be produced using a catalyst comprising the transition metal compound (b) and which comprises a non-crystalline olefin polymer having a specific intrinsic viscosity, glass transition temperature and density, and another known olefin polymer.Type: GrantFiled: October 7, 1998Date of Patent: October 24, 2000Assignee: Mitsui Chemicals, INC.Inventors: Kenji Sugimura, Kiyotaka Yorozu, Yasuhiko Suzuki, Tetsuo Hayashi, Shin-ya Matsunaga
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Patent number: 6121371Abstract: A process is provided for the preparation of (co)polymer emulsions or suspensions from a full range of free radically (co)polymerizable monomers, wherein the (co)polymers exhibit the characteristics of "living" polymerization, including one or more of predictable molecular weights, narrow or controllable molecular weight distributions and a variety of polymer architectures, including the roles of surfactants, catalyst and ligands, several initiation methods, and methods for catalyst removal from the emulsions or suspensions made, and the (co)polymer emulsions and suspensions made thereby.Type: GrantFiled: July 31, 1998Date of Patent: September 19, 2000Assignee: Carnegie Mellon UniversityInventors: Krzysztof Matyjaszewski, Scott G. Gaynor, Jian Qiu, Mircea Teodorescu
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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: 6111039Abstract: The present invention provides a catalyst system that exhibits unexpected control of desired properties in polyolefin products. The catalyst system includes a titanium-supported catalyst in combination with a mixture of tetraethoxysilane (TEOS) and dicyclopentyldimethoxy-silane (DCPMS). This catalyst system has been found to be effective in making polypropylene and polypropylene copolymers having relatively high melt flow rates and moderately broad molecular weight distribution.Type: GrantFiled: December 19, 1996Date of Patent: August 29, 2000Assignee: Exxon Chemical Patents, Inc.Inventors: Nemesio Delgado Miro, George Byron Georgellis, Homer Swei
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Patent number: 6100331Abstract: Disclosed is a graft copolymer (A+B) of a styrene-based monomer (A) and a terminal styrene derivative-modified olefin-based macromer (B) of formula (1), having a high degree of syndiotacticity for the stereospecificity of the chains derived from the styrene-based monomer: ##STR1## R is H or alkyl; X is H, halogen, or a substituent having one or more of C, Sn and Si; n is 1 to 4; m is 0 or a natural number; Z is a chain moiety derived from an olefin-based monomer. The copolymer is prepared by copolymerizing (A) and (B) in the presence of a catalyst comprising (a) a transition metal compound, (b) (i) a specific oxygen-containing compound and/or (ii) a compound capable of reacting with the compound (a) to form an ionic complex, and optionally (c) an alkylating agent.Type: GrantFiled: February 19, 1998Date of Patent: August 8, 2000Assignee: Idemitsu Petrochemical Co., Ltd.Inventor: Hideo Teshima
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Patent number: 6043324Abstract: The present invention provides methods for the homopolymerization and/or copolymerization of olefins. In preferred methods of the invention the polymerizable olefins have the general formula of CH.sub.2 .dbd.CR.sub.1 R.sub.2, wherein R.sub.1 and R.sub.2 are the same or different, and are hydrogen or a C.sub.1 -C.sub.10 alkyl. In particularly preferred embodiments, the methods further comprise contacting the polymerizable olefin with a procatalyst and a co-catalyst. In other embodiments, the methods further involve the use of an electron donor.Type: GrantFiled: April 1, 1998Date of Patent: March 28, 2000Assignee: Borealis A/SInventor: Amir K. Karbasi
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Patent number: 5990235Abstract: A chemically bonded olefin block copolymer consists essentially of chemically bonded polypropylene and poly(ethylene-co-propylene). The block copolymer is obtained by a process of (1) introducing a Ziegler polymerization catalyst based on titanium and propylene to a first polymerization zone (a) and polymerizing the propylene in the polymerization zone (a) for a period of 0.01 to 0.130 seconds and withdrawing an effluent stream of polypropylene, catalyst, solvent and unreacted propylene therefrom; (2) introducing the effluent stream to a second polymerization zone (b) together with ethylene dissolved in a solvent and carrying out a polymerization reaction in the second polymerization zone (b) for a period of 0.01 to 0.130 seconds; and (3) recovering the block copolymer.Type: GrantFiled: May 28, 1997Date of Patent: November 23, 1999Assignee: Research Development Corporation of JapanInventor: Minoru Terano
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Patent number: 5919866Abstract: The toner particles of this invention comprise pigment and a resin. The resin comprises a novel polymer formed from ethylenically unsaturated monomers, macromeric moieties that render the resin dispersible in hydrocarbon solvents, and a surface-release promoting moiety. When used for toner particles the polymer further comprises charge directing chelating moieties. The toner particles also include a charge director, preferably a metal cation. The toner particles, when dispersed in a carrier liquid, are useful as liquid toners for electrographic or electrophotographic processes.Type: GrantFiled: February 9, 1998Date of Patent: July 6, 1999Assignee: Minnesota Mining and Manufacturing CompanyInventors: Prabhakara S. Rao, Valdis Mikelsons
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Patent number: 5869584Abstract: A highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in which, preferably M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are alkyl or halogen, R.sup.5 is hydrogen or alkyl, R.sup.3 and R.sup.4 are alkyl, where R.sup.3, R.sup.4 and R.sup.5 may be halogenated, --(CR.sup.7 R.sup.8).sub.m --R.sup.6 --(CR.sup.7 R.sup.8).sub.n -- is a single- or multi-membered chain in which R.sup.6 may also be a (substituted) heteroatom, and m+n is zero or 1.Type: GrantFiled: June 2, 1995Date of Patent: February 9, 1999Assignee: Targor GmbHInventors: Andreas Winter, Frank Kueber, Walter Spaleck, Herbert Riepl, Wolfgang Anton Herrmann, Volker Dolle, Juergen Rohrmann
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Patent number: 5866659Abstract: Functionalized copolymers of .alpha.-olefin and para-alkylstyrene having the formula: ##STR1## in which in which R, R' and R", independently, are hydrogen or primary or secondary alkyl groups; X comprises 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 comprises a polymer having the molecular weight of at least about 500, which can be derived from both step and chain polymerization reactions; Y is a chemical linkage between polymer P and para-alkystyrene side chain, which is also a residue derived from graft reaction; and the combination of a+b+c+d represents the empirical formula of a substantially random functional polymer, where a ranges from about 50 to about 100,000, b, c and d range from 0 to about 10,000, and the sum of c+d is at least 1, and processes for preparing the funcitonalized copolymers are disclosed.Type: GrantFiled: June 28, 1996Date of Patent: February 2, 1999Assignee: The Penn State Research FoundationInventors: T. C. Chung, H. L. Lu
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Patent number: 5866663Abstract: Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal compounds, and sometimes other co-catalysts. Since some of the polymerizations exhibit some characteristics of living polymerizations, block copolymers can be readily made. Many of the polymers produced are often novel, particularly in regard to their microstructure, which gives some of them unusual properties. Numerous novel catalysts are disclosed, as well as some novel processes for making them. The polymers made are useful as elastomers, molding resins, in adhesives, etc. Also described herein is the synthesis of linear .alpha.-olefins by the oligomerization of ethylene using as a catalyst system a combination a nickel compound having a selected .alpha.-diimine ligand and a selected Lewis or Bronsted acid, or by contacting selected .alpha.Type: GrantFiled: July 10, 1997Date of Patent: February 2, 1999Assignees: E. I. du Pont de Nemours and Company, University of North CarolinaInventors: Maurice S. Brookhart, Lynda Kaye Johnson, Christopher Moore Killian, Samuel David Arthur, Jerald Feldman, Elizabeth Forrester McCord, Stephan James McLain, Kristina Ann Kreutzer, Alison Margaret Anne Bennett, Edward Bryan Coughlin, Steven Dale Ittel, Anju Parthasarathy, Lin Wang, Zhen-Yu Yang
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Patent number: 5854354Abstract: A process for preparing a propylene polymer composition comprising conducting multistage polymerization including a step (a) for preparing a propylene (co)polymer (a) and a step (b) for preparing an ethylene copolymer (b) in the presence of (A) a transition metal compound and (B) a compound activating the transition metal compound (A), in which the steps (a) and (b) may be carried out in any order, and the resulting propylene polymer composition contains the propylene (co)polymer (a) in an amount of 20 to 90% by weight and the ethylene copolymer (b) in an amount of 10 to 80% by weight and has MFR, as measured at 230.degree. C. under a load of 2.16 kg, of 0.01 to 500 g/10 min; and a propylene polymer composition prepared by this process. The process according to the invention can prepare a propylene polymer composition having excellent rigidity, heat resistance and impact resistance.Type: GrantFiled: June 7, 1995Date of Patent: December 29, 1998Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Takashi Ueda, Mikio Hashimoto, Masaaki Kawasaki, Daisuke Fukuoka, Junichi Imuta
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Patent number: 5840808Abstract: The present invention provides processes for preparing olefin polymers, by which olefin polymers composed of a propylene block copolymer component and an ethylene/.alpha.-olefin copolymer component are directly prepared by polymerization and olefin polymers excellent in impact resistance as well as in mechanical strength such as rigidity, moldability and heat resistance can be prepared. In the processes of the invention, a step (i) for preparing a crystalline polypropylene component and a step (ii) for preparing a low-crystalline or non-crystalline ethylene/.alpha.-olefin copolymer component are carried out in an arbitrary order using an olefin polymerization catalyst to form a propylene block copolymer component; then another catalyst component is added to the polymerization system; and a step (iii) for preparing a low-crystalline or non-crystalline ethylene/.alpha.-olefin copolymer component is carried out.Type: GrantFiled: October 7, 1996Date of Patent: November 24, 1998Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kenji Sugimura, Mamoru Kioka
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Patent number: 5804665Abstract: A propylene block copolymer comprising a matrix phase and a dispersed phase dispersed in said matrix phase, said matrix phase comprising (a) polypropylene; said dispersed phase having an average particle diameter of from 0.1 to 5 .mu.m; and said dispersed phase comprising an outer layer comprising (b) propylene-.alpha.-olefin copolymer rubber and an inner layer comprising (c) crystalline polyethylene dispersed therein a plurality of particles comprising an outer layer comprising (b') propylene-.alpha.-olefin copolymer rubber and an inner layer comprising (a') polypropylene, a propylene block copolymer comprising a matrix phase and a dispersed phase dispersed in said matrix phase, said matrix phase comprising (a) polypropylene; said dispersed phase having an average particle diameter of from 0.1 to 5 .mu.m; and said dispersed phase comprising (b) propylene-.alpha.Type: GrantFiled: January 15, 1997Date of Patent: September 8, 1998Assignee: Showa Denko K.K.Inventors: Kazuyuki Watanabe, Hisayoshi Yanagihara
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Patent number: 5798420Abstract: This invention relates to block polymers containing both crystalline and elastomeric blocks, the block copolymer having an A block and a B block. The A block is a polyethylene or an ethylene polymer optionally containing an alpha-olefin and optionally a non-conjugated diene, and is generally crystalline. The B block is an ethylene, .alpha.-olefin copolymer. Also disclosed is a process for manufacture of the block copolymers and methods for coupling the block copolymers. Coupled block copolymers are useful as thermoplastic elastomers exhibiting physical properties approaching those of crosslinked EP or EPDM elastomers, but showing thermal processability after coupling. The block copolymers of the present invention may also be used as a lubricant or fuel additive, as a plastics blend component, and as a component in hot melt adhesives.Type: GrantFiled: May 19, 1997Date of Patent: August 25, 1998Assignee: Exxon Chemical Patents, Inc.Inventors: Charles Cozewith, Gary William Ver Strate, Roger K. West, Gaetano A. Capone
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Patent number: 5789487Abstract: The present invention is directed to a process of atom (or group) transfer radical polymerization for the synthesis of novel homopolymer or a block or graft copolymer, optionally containing at least one polar group, with well defined molecular architecture and narrow polydispersity index, in the presence of an initiating system comprising (i) an initiator having a radically transferrable atom or group, (ii) a transition metal compound, and (iii) a ligand; the present invention is also directed to the synthesis of a macromolecule having at least two halogen groups which can be used as a macroinitiator component (i) to subsequently form a block or graft copolymer by an atom or group transfer radical polymerization process; the present invention is also directed to a process of atom or group transfer radical polymerization for the synthesis of a branched or hyperbranched polymer; in addition, the present invention is directed to a process of atom or group transfer radical polymerization for the synthesis of a maType: GrantFiled: July 10, 1996Date of Patent: August 4, 1998Assignee: Carnegie-Mellon UniversityInventors: Krzysztof Matyjaszewski, Simion Coca, Scott G. Gaynor, Yoshiki Nakagawa, Seong Mu Jo
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Patent number: 5756587Abstract: Propylene block copolymer containing per:100 parts by weight of a polymer (a) of propylene chosen from homopolymers and copolymers of propylene not containing more than 6% by weight of ethylene and/or of an alpha-olefin having from 4 to 6 carbon atoms,from 1 to 100 parts by weight of a polymer (b) of ethylene chosen from homopolymers and copolymers of ethylene not containing more than 90% by weight of propylene and/or of another alpha-olefin having from 4 to 6 carbon atoms,the said block copolymer additionally containing from approximately 0.001 to approximately 20% by weight of .alpha.,.omega.-diene-derived monomer units with respect to the total weight of the block copolymer.Type: GrantFiled: September 12, 1996Date of Patent: May 26, 1998Assignee: Solvay Polyolefins Europe -- Belgium (Societe AnonymeInventors: Serge Bettonville, Philippe De Rop, Claude Franquinet
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Patent number: 5753773Abstract: Multiphase block copolymers of propylene comprisinga) a polymer of propylene with from 0 to 5% by weight of further C.sub.2 -C.sub.10 1-alkenes,b) a copolymer of propylene with from 5 to 98% by weight of further C.sub.2 -C.sub.10 1-alkenes,the multiphase block copolymers having a melting point of less than 155.degree. C. and a stiffness (shear modulus G) conforming to the following condition (I): ##EQU1## where M.sub.a) denotes the amount of propylene polymer a) and M.sub.co denotes the amount of the multiphase block copolymer.are obtainable in particular by polymerization by means of metallocene-containing catalyst systems.Type: GrantFiled: November 9, 1995Date of Patent: May 19, 1998Assignee: BASF AktiengesellschaftInventors: Franz Langhauser, Juergen Kerth, Patrik Mueller, Meinolf Kersting, Guenther Schweier
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Patent number: 5753763Abstract: The toner particles of this invention comprise pigment and a resin. The resin comprises a novel polymer formed from ethylenically unsaturated monomers, macromeric moieties that render the resin dispersible in hydrocarbon solvents, and a surface-release promoting moiety. When used for toner particles the polymer further comprises charge directing chelating moieties. The toner particles also include a charge director, preferably a metal cation. The toner particles, when dispersed in a carrier liquid, are useful as liquid toners for electrographic or electrophotographic processes.Type: GrantFiled: October 30, 1996Date of Patent: May 19, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Prabhakara S. Rao, Valdis Mikelsons
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Patent number: 5741862Abstract: Highly flexible propylene/ethylene copolymers having a high rubber content are obtainable by two-stage 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 an aluminum compound as a cocatalyst, in a first polymerization stage, propylene being polymerized at from 15 to 40 bar and from 50.degree. to 90.degree. C. and during an average residence time of the reaction mixture of from 0.5 to 5 hours and then, in a second polymerization stage, a mixture of propylene and ethylene being polymerized with the polymer discharged from the first polymerization stage, at from 5 to 30 bar, this pressure being at least 2 bar below the pressure of the first polymerization stage, and at from 60.degree. to 100.degree. C. and during an average residence time of the reaction mixture of from 0.Type: GrantFiled: January 13, 1997Date of Patent: April 21, 1998Assignee: BASF AktiengesellschaftInventors: Patrik Muller, Meinolf Kersting