Ethylenic Reactant Contains At Least Two Unsaturated Groups And Is Devoid Of An Aromatic Group Patents (Class 525/313)
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Publication number: 20040116610Abstract: Olefin-based copolymers made affine by grafting, characterised in that they are composed of:Type: ApplicationFiled: December 24, 2003Publication date: June 17, 2004Inventors: Nadia Torres, Cedric Loubat, Jean-Jacques Robin, Bernard Boutevin
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Publication number: 20040102579Abstract: The present invention relates to a thermoplastic styrenic resin composition comprises a styrenic copolymer comprising 15-100 parts by weight of a unit derived from a styrenic monomer (i-1), 0-45 parts by weight of a unit derived from a vinyl cyanide monomer (i-2), 0-40 parts by weight of a unit derived from a copolymerizable vinyl monomer (i-3) other than the above monomers, and 0.0005-1.0 parts by weight of a unit derived from a polyfunctional maleimide monomer, all based on 100 parts by weight of the total amount of (i-1) to (i-3). The thermoplastic styrenic resin composition manufactured in the present invention is excellent in processability. The rubber modified thermoplastic styrenic resin composition of the present invention gives a good heat stability, impact strength, fluidity and other mechanical properties. In addition, it also gives a uniform wall thickness, and the gloss on the surface of injected products after painting process is excellent.Type: ApplicationFiled: November 7, 2003Publication date: May 27, 2004Inventor: Wen-Yi Su
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Publication number: 20040092668Abstract: A photosemiconductor encapsulating resin composition, excellent in light transmittance, ultraviolet resistance and heat resistance, comprising the following component (A) and component (B):Type: ApplicationFiled: September 17, 2003Publication date: May 13, 2004Inventors: Yujiro Kawaguchi, Shigeki Naitoh, Toshiyuki Hasegawa
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Patent number: 6727321Abstract: The preparation of allylated poly(vinyl chloride) by utilizing an allyltrialkylsilane in the presence of Friedel-Crafts acids is disclosed. The pendant allyl groups can be further reacted through various functionalization reactions to contain end groups such as epoxy. A method for determination of the labile chlorine content of poly(vinyl chloride) is also disclosed.Type: GrantFiled: June 27, 2000Date of Patent: April 27, 2004Assignee: University of AkronInventors: Joseph P. Kennedy, Zhengjie Pi
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Patent number: 6723774Abstract: The invention relates to a method for producing caoutchouc particles (K) by means of emulsion polymerisation in the presence of an emulsifier and a polymerisation initiator. Said particles contain A) 80 to 100 wt. % of one or more conjugated diene monomers (A) in relation to (K) and B) 0 to 20 wt. % of one or more monoethylenically unsaturated comonomers (B) in relation to (K) in the polymerised form. The inventive method is characterised in that 1) a mixture (M1) containing water and an emulsifier is provided, 2) a mixture (M2) containing one or more monomers in the monomer or polymerised form selected from styrole, &agr;-methylstyrole, butadiene, n-butylacrylate, MMA and acrylnitrile and optionally comonomers is added, 3) polymerisation of the obtained mixture starts in the presence of a polymerisation initiator at temperature of 5 to 95° C., 4) a mixture (M3) containing 0 to 100 wt. % of the comonomers (B) in relation to (B) and 0 to 25 wt.Type: GrantFiled: September 10, 2002Date of Patent: April 20, 2004Assignee: BASF AktiengesellschaftInventors: Norbert Güntherberg, Bernhard Czauderna, Michael Breulmann, Sabine Oepen, Wil Duijzings, Norbert Niessner
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Patent number: 6720395Abstract: A method of producing a stellar polymer which comprises polymerizing a vinyl monomer in the manner of living radical polymerization and adding a compound having two or more polymerizable carbon-carbon double bonds at the end point of the polymerization is provided. A composition which comprises, as an essential component, a hydroxyl-terminated polymer falling under said polymer and a compound having, in each molecule, not less than two functional groups reactive with the hydroxyl group is provided.Type: GrantFiled: July 12, 2002Date of Patent: April 13, 2004Assignee: Kaneka CorporationInventor: Yoshiki Nakagawa
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Patent number: 6706821Abstract: Adducts of polyfunctional acrylates and amine terminated polyolefins are provided. The adducts are prepared via a Michael addition reaction of the acrylate and the amine terminated polyolefin. The resultant adducts can be further polymerized with acrylic monomers via free radical or radiation curing mechanisms or quaternized to improve dispersion in aqueous systems.Type: GrantFiled: July 18, 2001Date of Patent: March 16, 2004Assignee: FMC CorporationInventor: Robert J. Letchford
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Patent number: 6699941Abstract: The present invention relates to selectively hydrogenated block copolymers where one of the blocks is a random copolymer of a mono-alkenyl arene monomer, such as styrene, and a 1,3-cyclodiene monomer, such as 1,3-cyclohexadiene, and one of the other blocks is a hydrogenated polymer or copolymer of an acyclic conjugated diene, such as 1,3-butadiene or isoprene.Type: GrantFiled: November 7, 2002Date of Patent: March 2, 2004Assignee: Kraton Polymers U.S. LLCInventors: Dale L. Handlin, David T. Williamson, Carl L. Willis
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Patent number: 6689469Abstract: A polymer nano-particle composition is provided. The composition includes polymer nano-particles having a poly(alkenylbenzene) core and a surface layer comprising a crystalline polyolefin. The nano-particles preferably have a mean average diameter of less than about 100 nm.Type: GrantFiled: December 31, 2001Date of Patent: February 10, 2004Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz, Pat Sadhukhan
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Patent number: 6669815Abstract: There is provided a treating agent for a sheet surface comprising a graft copolymer composed of a back bone polymer and branch polymer, either of which is a polymer having vinyl alcohol units, and the other of which is a polymer having cationic groups, the treating agent is applied onto a pulp sheet or plastic sheet, and the coated sheet is used in ink jet printing. Cationic groups are introduced by graft copolymerization using di(meth)allylamine-based and/or (meth)acryl-based monomer. Alternatively, the graft copolymer of the present invention is obtained by grafting N-vinylcarboxylic acid amide monomer followed by hydrolysis thereof. A formula weight ratio of vinylalcohol units and the introduced cationic groups of 1:20 to 2:1 is preferable in terms of balanced performance.Type: GrantFiled: March 13, 2000Date of Patent: December 30, 2003Assignee: Hymo CorporationInventors: Toshiaki Sugiyama, Motosuke Ono, Osamu Kamada
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Patent number: 6649701Abstract: The present invention has for its object to provide a polymer available upon coupling of polymers of radical-polymerizable olefin monomer or monomers and a process for producing said polymer. The present invention is concerned with a method for effecting polymer-polymer coupling in the living radical polymerization of a radical-polymerizable olefin monomer which comprises adding a compound having at least two sparingly radical-polymerizable alkenyl groups during or after polymerization.Type: GrantFiled: November 20, 2000Date of Patent: November 18, 2003Assignee: Kaneka CorporationInventors: Yoshiki Nakagawa, Nao Fujita
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Publication number: 20030198810Abstract: A nano-particle composition including a poly (alkenylbenzene) core and a poly (conjugated diene) or a poly(alkylene) surface layer is provided. The nano-particles have a mean average diameter less than about 100 nm. The nano-particles can be modified via, for example, hydrogenation or functionalization. The nano-particles can advantageously be incorporated into rubbers, elastomers, and thermoplastics.Type: ApplicationFiled: August 19, 2002Publication date: October 23, 2003Inventors: Xiaorong Wang, Chenchy Jeffrey Lin, James Hall, Sandra Warren, James Krom, Hajime Kondo, Koichi Morita
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Patent number: 6605674Abstract: This invention is directed to structurally-modified water-soluble polymers prepared by initiating polymerization of an aqueous solution of monomers under free radical polymerization conditions to form a polymer solution and adding at least one structural modifier to the polymer solution after at least 30% polymerization of the monomers has occurred, and to use of the water-soluble cross-linked polymers as flocculating agents.Type: GrantFiled: June 29, 2000Date of Patent: August 12, 2003Assignee: Ondeo Nalco CompanyInventors: Wesley L. Whipple, Chidambaram Maltesh, Cathy C. Johnson, Ananthasubramanian Sivakumar, Tracey M. Guddendorf, Angela P. Zagala
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Publication number: 20030149185Abstract: A multi-layer nano-particle composition including a polymer core and at least two additional layers is provided. The nano-particles have a mean average diameter less than about 100 nm. The nano-particles can be modified via, for example, hydrogenation or functionalization. The nano-particles can be advantageously incorporated into rubbers, elastomers, and thermoplastics.Type: ApplicationFiled: December 30, 2002Publication date: August 7, 2003Applicant: Bridgestone CorporationInventors: Xiaorong Wang, Victor J. Foltz
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Patent number: 6599978Abstract: A copolymer comprising a maleimide-based monomer unit and/or an unsaturated dicarboxylic acid anhydride-based monomer unit, where the copolymer contains an unreacted maleimide-based monomer and/or an unsaturated dicarboxylic acid anhydride-based monomer in an amount of 200 ppm or less and an adduct of a compound other than the polymerized units of the copolymer and the maleimide-based monomer and/or unsaturated dicarboxylic acid anhydride-based monomer in an amount of 0.1 to 3,000 ppm.Type: GrantFiled: November 20, 2000Date of Patent: July 29, 2003Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Yoshifumi Shikisai, Hisaya Yokohama
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Patent number: 6593429Abstract: A combined linear and nonlinear polymer (i.e., having a combined linear, branched and radial structure) P+PnD according to the present invention is represented by (P+PnD)−+Li, where P is a polymer of a monovinyl aromatic monomer or a conjugated diene monomer; PD is a nonlinear polymer having a combined linear, branched and radial structure due to a multifunctional compound D bonded to the polymer P; n is an integer ranging from 2 to 10 and represents the average number of bonds between the monovinyl aromatic or conjugated diene polymer P and the multifunctional compound D; and +Li represents a metal ion as a partner of the active anion (P+PnD)−. The combined linear and nonlinear polymer of the present invention, characterized by nonlinearity-related properties (i.e.Type: GrantFiled: July 22, 2002Date of Patent: July 15, 2003Assignee: Korea Kumho Petrochemical Co., Ltd.Inventors: Sam-Min Kim, Jong-Geun Kim, Jong-Hyun Park
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Publication number: 20030130433Abstract: A process of preparing a graft polymer (e.g., an ABS graft copolymer), which involves determining the concentration of at least one reaction component during the course of the reaction by means of Raman spectroscopy, is disclosed. The process, more particularly, comprises: (a) synthesizing the graft polymer from a reaction mixture comprising reactive components (e.g., monomers such as styrene and acrylonitrile, and a graft base); (b) analyzing the reaction mixture, at intervals, during the synthesis of the graft polymer, by means of Raman spectra; (c) recording the results of the Raman spectra analysis; (d) determining the concentration of at least one of said reactive components (e.g., styrene) by means of spectral evaluation of the recorded Raman spectra; and (e) terminating the synthesis reaction of the graft polymer when the concentration of at least one of the reactive components has reached a predetermined concentration value.Type: ApplicationFiled: October 28, 2002Publication date: July 10, 2003Inventors: Eckhard Wenz, Vera Buchholz, Herbert Eichenauer, Udo Wolf, Ralf-Jurgen Born, Ulrich Jansen, Wolfgang Dietz
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Publication number: 20030124353Abstract: A polymer nano-particle composition is provided. The composition includes polymer nano-particles having a poly(alkenylbenzene) core and a surface layer comprising a crystalline polyolefin. The nano-particles preferably have a mean average diameter of less than about 100 nm.Type: ApplicationFiled: December 31, 2001Publication date: July 3, 2003Applicant: Bridgestone Corp.Inventors: Xiaorong Wang, Victor J. Foltz, Pat Sadhukhan
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Patent number: 6579959Abstract: The present invention has for its object to produce an isobutylene polymer having excellent performance characteristics by suppressing side reactions at the polymer growth termini during polymerization. The process of the present invention is to carry out a cationic polymerization of a monomer component containing isobutylene in the presence of a polymerization initiator, a catalyst, an ether compound, and an electron donor. Moreover, the process is to carry out a cationic polymerization of a monomer component containing isobutylene in the presence of a polymerization initiator, a catalyst, an ether compound, and an electron donor, and add a compound having the carbon-carbon unsaturated bond for introducing the carbon-carbon unsaturated bond into the polymer terminus.Type: GrantFiled: March 19, 2002Date of Patent: June 17, 2003Assignee: Kaneka CorporationInventors: Chiho Yoshimi, Keizo Hayashi, Shigeru Hagimori, Naoki Furukawa
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Publication number: 20030096914Abstract: A combined linear and nonlinear polymer (i.e., having a combined linear, branched and radial structure) P+PnD according to the present invention is represented by (P+PnD)−+Li, where P is a polymer of a monovinyl aromatic monomer or a conjugated diene monomer; PD is a nonlinear polymer having a combined linear, branched and radial structure due to a multifunctional compound D bonded to the polymer P; n is an integer ranging from 2 to 10 and represents the average number of bonds between the monovinyl aromatic or conjugated diene polymer P and the multifunctional compound D; and +Li represents a metal ion as a partner of the active anion (P+PnD)−. The combined linear and nonlinear polymer of the present invention, characterized by nonlinearity-related properties (i.e.Type: ApplicationFiled: July 22, 2002Publication date: May 22, 2003Inventors: Sam-Min Kim, Jong-Geun Kim, Jong-Hyun Park
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Publication number: 20030088029Abstract: A process for forming a copolymer comprising the steps of (i) preparing a living polymer segment by using anionic polymerization techniques, (ii) modifying the living polymer by reacting it with an alkyl metal halide to form an organometallic polymeric intermediate, and (iii) preparing a second polymer segment from the organometallic polymeric intermediate by combining the intermediate, conjugated diene monomer, and a coordination catalyst that will polymerize the conjugated diene monomer.Type: ApplicationFiled: June 28, 2002Publication date: May 8, 2003Inventor: Yoichi Ozawa
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Publication number: 20030055179Abstract: The present invention provides polymers having any one of properties including affinity for metals or polar resins, impact resistance, mar resistance, heat resistance, rigidity, oil resistance, transparency, anti-fogging properties, electric insulating properties, high breakdown voltage, coating properties, low-temperature flexibility, moldability, environmental degradation, fluidity and dispersibility, and provides a process for preparation thereof.Type: ApplicationFiled: July 19, 2002Publication date: March 20, 2003Inventors: Seiji Ota, Satoru Moriya, Ryoji Mori, Taku Koda, Junji Tan, Shinichi Kojoh, Hideyuki Kaneko, Shunichi Hama, Tadahito Nobori, Tomoaki Matsugi, Norio Kashiwa
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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: 20020188080Abstract: A method of producing a polymer or a stellar polymer which comprises polymerizing a vinyl monomer in the manner of living radical polymerization and adding a compound having two or more polymerizable carbon-carbon double bonds at the end point of the polymerization.Type: ApplicationFiled: July 12, 2002Publication date: December 12, 2002Inventor: Yoshiki Nakagawa
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Patent number: 6482900Abstract: A vinyl polymer having, at a molecular chain terminus, a structure represented by the general formula 1: (wherein R3 is a hydroxy, amino, epoxy, carboxylic acid, ester, ether, amide or silyl group, an alkenyl group having low polymerizability, an organic compound having 1 to 20 carbon atoms, X is a halogen atom, a nitroxide or sulfide group or a cobalt porphyrin complex).Type: GrantFiled: June 5, 2000Date of Patent: November 19, 2002Assignee: Kaneka CorporationInventors: Yoshiki Nakagawa, Kenichi Kitano, Masayuki Fujita, Nao Fujita
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Patent number: 6476103Abstract: The present invention deals with a novel photochromic organic material, the use of at least one plasticizer for the preparation of said novel material, said preparation and photochromic articles constituted wholly or in part of said novel material. The intervening plasticizer, advantageously a phthalate, is according to a variant simply dispersed in the polymer matrix, or, according to another variant, chemically bound to said polymer matrix. Said novel material possesses remarkable photochromic properties together with interesting optical and mechanical properties.Type: GrantFiled: March 17, 1999Date of Patent: November 5, 2002Assignee: Corning IncorporatedInventors: Bruno Baney, David Henry
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Patent number: 6472464Abstract: A styrene-butadiene copolymer having excellent low hysteresis loss characteristic, wet skid resistance, fracture characteristics, and abrasion resistance and a rubber composition comprising the copolymer are disclosed. The styrene-butadiene copolymer has a total styrene content in the range of 33 to 42% by weight of the styrene-butadiene copolymer; a content of styrene sequences having 4 to 20 styrene units in the range of 40 to 65% by weight of the total styrene content, as obtained by measurements by NMR and GPC; a content of styrene sequences having more than 20 styrene units in the range of 5% by weight or less of the total styrene content, as obtained by measurement by GPC; a content of vinyl unit in the range of 30% by mol or less of a butadiene part of the styrene-butadiene copolymer; a sum of the total styrene value and ½ of the content of vinyl units in the range of 46 to 52%; and an inner or end structure having, for example tin-carbon bond.Type: GrantFiled: March 27, 1997Date of Patent: October 29, 2002Assignee: Bridgestone CorporationInventors: Koichi Morita, Hajime Kondo, Yoichi Ozawa
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Publication number: 20020150715Abstract: The present invention is a composition comprising an alternating hydrogenated block copolymer having at least two hydrogenated vinyl aromatic polymer blocks and at least one conjugated diene polymer block, wherein the number average molecular weights (Mn) of each block can be different.Type: ApplicationFiled: October 31, 2001Publication date: October 17, 2002Inventors: Stephen F. Hahn, Glenn H. Fredrickson, Cora M. Leibig, Molly T. Reinhardt
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Patent number: 6437050Abstract: A polymer nano-particle composition is provided, wherein the nano-particle includes a poly(alkenylbenzene) core and a surface layer including poly(conjugated diene). The polymer nano-particles are preferably less than about 100 nm in diameter. The nano-particles can be made by a dispersion polymerization process.Type: GrantFiled: October 4, 2001Date of Patent: August 20, 2002Assignee: Bridgestone CorporationInventors: James Krom, Xiaorong Wang
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Patent number: 6417272Abstract: A process is disclosed for manufacturing coupled radial block copolymers of the S—B—Li type having improved optical properties, which process utilizes coupling agents having from about 3 to about 7 epoxy groups per mole.Type: GrantFiled: August 23, 2000Date of Patent: July 9, 2002Assignee: Fina Research, S.A.Inventors: Emmanuel Lanza, Jean Naveau
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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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Patent number: 6388020Abstract: Structurally isomeric poly(alkyl ethylenes) with H and Y structures, polymeric bridging segments and a Y index of 2×10−3 to 8×10−3 (kJ/mole/degree), have decreased instability in the melt and more advantageous processing properties. The structurally isomeric poly(alkyl ethylenes) with H and Y structures are synthesized by an irradiating method, a melt reaction method or a solid phase reaction method by reacting poly(alkyl ethylenes) with 0.05 to 5% by weight of monofunctional, difunctional and polyfunctional monomers, optionally in the presence of peroxides. The structurally isomeric poly(alkyl ethylenes) are suitable for producing films, sheets, panels, coatings, pipes, hollow objects and foams.Type: GrantFiled: January 27, 1997Date of Patent: May 14, 2002Assignee: Borealis GmbHInventors: Manfred Raetzsch, Achim Hesse, Hartmut Bucka, Norbert Reichelt, Ulf Panzer, Konrad Buehler
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Patent number: 6313216Abstract: This invention discloses a process for synthesizing random styrene-isoprene rubber comprising: (1) continuously charging isoprene, styrene, an initiator, and a solvent into a first polymerization zone, (2) allowing the isoprene and styrene to copolymerize in the first polymerization zone to total conversion of 60 to 95 percent to produce a polymer cement containing living styrene-isoprene chains, (3) continuously charging the polymer cement containing living styrene-isoprene chains and additional isoprene monomer into a second polymerization zone, wherein from 5 to 40 percent of the total amount of isoprene changed is charged into the second polymerization zone, (4) allowing the copolymerization to continue in the second polymerization zone to a conversion of the isoprene monomer of at least 90 percent wherein the total conversion of styrene and isoprene in the second polymerization zone is limited to a maximum of 98 percent, (5) withdrawing a polymer cement of random styrene-isoprene rubber having living chaType: GrantFiled: September 1, 2000Date of Patent: November 6, 2001Assignee: The Goodyear Tire & Rubber CompanyInventors: Scott McDowell Christian, Zhengfang Xu, Michael Lester Kerns
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Patent number: 6291617Abstract: Compositions for the polymer curing, comprising: a) one or more organic peroxides and b) 3,7-Dimethyl-1,3,6-Octatriene (OCIMENE).Type: GrantFiled: December 14, 1999Date of Patent: September 18, 2001Assignee: Elf Atochem Italia S.r.l.Inventors: Luciano Abrigo, Carla Beretta, Ezio Montessoro, Michele Merenda
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Publication number: 20010016628Abstract: Structurally isomeric poly(alkyl ethylenes) with H and Y structures, polymeric bridging segments and a &PSgr; index of 2×10−3 to 8×10−3 (kJ/mole/degree), have decreased instability in the melt and more advantageous processing properties.Type: ApplicationFiled: January 27, 1997Publication date: August 23, 2001Inventors: MANFRED RAETZSCH, ACHIM HESSE, HARTMUT BUCKA, NORBERT REICHELT, ULF PANZER, KONRAD BUEHLER
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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: 6262181Abstract: This invention relates to a process for generating a organically soluble partially cross-linked acid labile polymer according to the present invention comprises the steps of providing a polymer with one or more monomer units, wherein at least one of the monomer units contain one or more pendant COOH or hydroxyl groups; and reacting said polymer with a polyvinyl ether in the presence of a acid catalyst to form links between at least two polymer chains. The resulting polymer can be used as a component in a photoresist formulation.Type: GrantFiled: December 22, 1999Date of Patent: July 17, 2001Assignee: Arch Specialty Chemicals, Inc.Inventors: Nageshwer Rao Bantu, Donald Frank Perry, Jacqueline Marie Marshall, Timothy Michael Holt
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Patent number: 6252005Abstract: The thermal oxidative stability of acrylic grafted polymers is improved by (a) graft polymerizing monomers selected from the group consisting of (i) an ester or salt of an unsubstituted or 1-3 C alkyl-substituted acrylic acid and (ii) an ester or salt of an unsubstituted or 1-3 C alkyl-substituted acrylic acid and about 1 to about 10 mole %, based on the total monomers added, of an unsubstituted or 1-3 C alkyl-substituted acrylic acid, to a backbone of a propylene polymer material in the presence of a 4-vinyl-substituted 5-12 C cyclic 1-alkene, wherein the total amount of polymerized monomer is about 20 to about 200 parts per hundred parts of the propylene polymer material and the vinyl-substituted cyclic alkene is present in an amount of about 1 mole % to about 30 mole %, based on the total moles of monomer added, and (b) removing any unreacted grafting monomer from the resulting grafted propylene polymer material, decomposing any unreacted initiator, and deactivating any residual free radicals in the materiType: GrantFiled: August 7, 1998Date of Patent: June 26, 2001Assignee: Montell Technology Company BVInventor: Suhas G. Niyogi
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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: 6242536Abstract: The dispersibility of the initial polystyrene block in forming a S-B-S type of copolymer is improved by first preparing a small block of homopolydiene such as homopolybutadiene as a dispersing agent. Onto this small block of homopolybutadiene, the first block of polystyrene is formed and affixed and thereby made dispersible in a mixture of alkanes and 15 to 60% by weight of cycloalkanes, preferably hexane and cyclohexane. After the preparation of the dispersing agent and the first styrene block, the remaining monomer charges to the reactor are fed in aliphatic hydrocarbon diluents, preferably hexane or technical hexane, thereby greatly reducing the final percentage of cycloalkanes including cyclohexane in the reactor to less than 25% of total dispersing medium. The block copolymers produced according to the present process display a narrow molecular weight distribution and improved tensile strength over block copolymers produced in the absence of the additional cycloalkanes in the solvent system.Type: GrantFiled: December 11, 1997Date of Patent: June 5, 2001Assignee: Bridgestone CorporationInventors: James E. Hall, Daniel F. Graves, Hideo Takeichi
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Patent number: 6242525Abstract: Thermoplastic elastomers of high strength, high elasticity and good dyeability, the incorporated elastomeric particles of which have an average particle diameter of 0.05 to 5 &mgr;m, from propylene homopolymers and/or propylene copolymers, elastomeric C2 to C8 olefin copolymers and/or terpolymers and multifunctional, unsaturated monomers are formed by a method, for which mixtures of propylene homopolymers and/or propylene copolymers, elastomeric C2 to C8 olefin copolymers and/or terpolymers and readily volatile C4 to C7 dienes are reacted in the melt. The thermoplastic elastomers, as well as mixtures with conventional polyolefins, are suitable for use in the vehicle industry, in the domestic appliances industry, in the building sector and in medical technology.Type: GrantFiled: November 5, 1998Date of Patent: June 5, 2001Assignee: Borealis GmbHInventors: Manfred Raetzsch, Achim Hesse, Norbert Reichelt, Hartmut Bucka, Hermann Heinemann, Matthias Stolp, Hans-Joachim Radusch
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Patent number: 6228925Abstract: A procedure for the production of PVC particles with a narrow size distribution in the range 10-50 &mgr;m, preferably 10-30 &mgr;m, in which, in a first stage, a vinyl monomer or a mixture of monomers is polymerised to form a polymer/oligomer seed particle in the range 1-10 &mgr;m. In a second stage, another vinyl monomer or mixture of monomers is swelled into the polymer/oligomer seed particles and polymerisation takes place in such a way that they grow into polymer particles of the desired size. It is preferable to use aromatic vinyl monomers or acrylates as the monomer in the seed particles. The seed particles in the first stage can be produced in a two-stage swelling process or by dispersion polymerisation.Type: GrantFiled: February 9, 1999Date of Patent: May 8, 2001Assignee: Norsk Hydro ASAInventors: Steinar Pedersen, Arvid Berge, Harald Jacobsen, Kari-Anne Leth-Olsen, Bård Sæthre, John Ugelstad
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Patent number: 6203913Abstract: The present invention provides coating compositions including: (a) about 75 to about 99.9 weight percent of a crosslinkable film-forming system including one or more crosslinkable film-forming resins and one or more crosslinking materials which is capable of reacting with the film-forming resin to form a crosslinked film; and (b) one or more substantially saturated, predominantly hydrocarbon adhesion promoting agents having an average of more than one pendant or terminal polar group per molecule which are capable of reacting with the crosslinking material, the adhesion promoting agent(s) being present in an amount ranging from about 0.1 to about 25 weight percent on a basis of total resin solids of the coating composition. The coating compositions are useful for directly coating surfaces of thermoplastic and thermosetting plastic substrates, such as TPO and RIM, without the aid of flame or corona pretreatment, or the use of an adhesion promoter.Type: GrantFiled: December 16, 1998Date of Patent: March 20, 2001Assignee: PPG Industries Ohio, Inc.Inventors: Constantine A. Kondos, Edward E. McEntire, Masayuki Nakajima, Richard M. Nugent, Jr.
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Patent number: 6184307Abstract: This invention is a method for producing butadiene-isoprene block copolymers with a specified amount of residual unsaturation in the polyisoprene blocks utilizing a hydrogenation catalyst wherein the hydrogenation residence time is minimized.Type: GrantFiled: January 20, 1999Date of Patent: February 6, 2001Assignee: Shell Oil CompanyInventor: David Karl Schisla
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Patent number: 6162873Abstract: Disclosed herein are an aromatic vinyl-conjugated diene block copolymer composed of a bound aromatic vinyl unit and a bound conjugated diene unit and containing at least a block aromatic vinyl segment, wherein:(1) a content of the bound aromatic vinyl unit in the block copolymer is 3 to 60 wt. %;(2) a proportion of block aromatic vinyl segment portions having a molecular weight at most a third of a molecular weight (A-Mp) corresponding to a peak in a molecular weight distribution curve of the block aromatic vinyl segment (A) as determined by gel permeation chromatography (GPC) is 55 to 90 mol % based on the total content of the block aromatic vinyl segment (A); and(3) a molecular weight (Mp) corresponding to a peak in a molecular weight distribution curve of the block copolymer as determined by GPC is 10,000 to 1,000,000, a production process thereof, a resin composition comprising the aromatic vinyl-conjugated diene block copolymer, and a preparation process of the resin composition.Type: GrantFiled: May 21, 1998Date of Patent: December 19, 2000Assignee: Nippon Zeon Co., Ltd.Inventors: Tetsuya Toyoshima, Hiroaki Matsuda
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Patent number: 6153695Abstract: A process is disclosed for manufacturing coupled radial block copolymers of the S-B-Li type having improved optical properties, which process utilizes coupling agents having from about 3 to about 7 epoxy groups per mole.Type: GrantFiled: April 7, 1999Date of Patent: November 28, 2000Assignee: Fina Research, S.A.Inventors: Emmanuel Lanza, Jean Naveau
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Patent number: 6072006Abstract: This invention relates to a process for generating a organically soluble partially cross-linked acid labile polymer according to the present invention comprises the steps of providing a polymer with one or more monomer units, wherein at least one of the monomer units contain one or more pendant COOH or hydroxyl groups; and reacting said polymer with a polyvinyl ether in the presence of a acid catalyst to form links between at least two polymer chains. The resulting polymer can be used as a component in a photoresist formulation.Type: GrantFiled: November 6, 1998Date of Patent: June 6, 2000Assignee: Arch Specialty Chemicals, Inc.Inventors: Nageshwer Rao Bantu, Donald Frank Perry, Jacqueline Marie Marshall, Timothy Michael Holt
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Patent number: 6025443Abstract: Bead polymers having an average particle size of 1 to 30 .mu.m and a narrow particle size distribution are obtained by the seed/feed process if a crosslinked polymer having a soluble fraction of less than 25 wt. % and an average particle size of 0.5 to 10 .mu.m is used as the seed.Type: GrantFiled: August 13, 1998Date of Patent: February 15, 2000Assignee: Agfa Gevaert AGInventors: Wolfgang Podszun, Joachim Kruger, Olaf Halle, Frank Louwet
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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: 6004425Abstract: One-component hot-curing structural adhesives based on liquid rubbers, which may optionally contain functional groups, solid rubbers, thermoplastic polymer powders and sulfur and also vulcanization accelerators are suitable for bonding metal parts. Tensile shear strengths of more than 15 MPa and high breaking elongations of more than 15% can be obtained. These adhesives are substantially free from low molecular weight epoxy resins and are particularly suitable for use in white-shell assembly in the car industry.Type: GrantFiled: July 25, 1997Date of Patent: December 21, 1999Assignee: Henkel-Teroson GmbHInventors: Peter Born, Frank Dittrich