Substrate Polymer Derived From Hydrocarbon Containing Plural Unsaturation Patents (Class 525/83)
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Patent number: 4732924Abstract: Disclosed is a method for producing a vinyl aromatic resin composition containing a rubber in a disposed state which comprises from 60 to 90% by weight of a copolymer of a vinyl aromatic monomer with an unsaturated dicarboxylic anhydride in which the content of the vinyl aromatic monomer as a monomer unit is from 70 to 98 mol % and the content of the unsaturated dicarboxylic anhydride as a monomer unit is from 2 to 30 mol %, from 10 to 35% by weight of a graft copolymer and from 0 to 9% by weight of a diene based rubber, by copolymerizing the vinyl aromatic monomer with the unsaturated dicarboxylic anhydride in the presence of the diene based rubber, wherein said method comprises.Type: GrantFiled: July 1, 1986Date of Patent: March 22, 1988Assignee: Idemitsu Petrochemical Company LimitedInventors: Eiichi Terada, Hiroshi Kurokawa, Shigemi Kawazoe
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Patent number: 4730023Abstract: An impact resistant methacrylic resin composition having improved transparency, weatherability and impact resistance comprising a multi-layer graft copolymer and a methacrylic resin is disclosed.Type: GrantFiled: September 29, 1986Date of Patent: March 8, 1988Assignee: Mitsubishi Rayon Company, Ltd.Inventors: Fumio Sato, Masamitsu Tateyama
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Patent number: 4690977Abstract: A vinyl chloride polymer composition comprising(A) 3 to 50 parts by weight of a grafted copolymer and(B) 97 to 50 parts by weight of a vinyl chloride polymer, a total amount of the copolymer (A) and the polymer (B) being 100 parts by weight; the grafted copolymer (A) comprising(1) 50 to 80 parts by weight of a rubber copolymer and(2) 50 to 20 parts by weight of a grafting monomer, a total amount of the component (1) and the component (2) being 100 parts by weight; the component (1) comprising(a) 60 to 90% by weight of the rubber copolymer comprising 99 to 85% by weight of alkyl acrylate having an alkyl group of 2 to 8 carbon atoms, 1 to 15% by weight of conjugated diolefin and 0 to 5% by weight of polyfunctional cross-linking agent and(b) 40 to 10% by weight of a surface rubber copolymer comprising 98 to 70% by weight of alkyl acrylate having an alkyl group of 2 to 8 carbon atoms, 2 to 30% by weight of conjugated diolefin and 0 to 5% by weight of polyfunctional cross-linking agent and being obtained by polymeType: GrantFiled: August 20, 1986Date of Patent: September 1, 1987Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Hideki Hosoi, Toshihiko Hasegawa, Taizo Aoyama
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Patent number: 4668738Abstract: A process, and the well-dispersed product thereof, for recovering solids from a latex of a grafted rubber concentrate having a rubber substrate and a glassy superstrate by: (a) adding a latex of said superstrate to said grafted rubber concentrate latex; (b) coagulating said latex with high shear to form a paste; (c) heating said paste to cause syneresis of said paste into polymeric particles; and (d) dewatering said particles.Type: GrantFiled: December 24, 1985Date of Patent: May 26, 1987Assignee: The Dow Chemical CompanyInventors: John W. Lee, Eugene R. Moore
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Patent number: 4666980Abstract: This invention provides thermoplastic moulding moulding compositions with good dimensional stability under heat and transparency consisting of particular graft polymers and optionally thermoplastic polymer resins.Type: GrantFiled: June 26, 1985Date of Patent: May 19, 1987Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Karl-Heinz Ott, Walter Uerdingen, Hans-Eberhard Braese, Hans-Jurgen Kress
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Patent number: 4663382Abstract: Disclosed is a non-rigid vinyl chloride polymer composition comprising 100 weight parts of a vinyl chloride polymer resin, 5-50 weight parts of a graft copolymer modifier and 10-300 weight parts of a plasticizer. The graft copolymer modifier is obtained by graft-polymerizing 25-150 weight parts of an alkyl ester of methacrylic acid having 1 to 4 carbon atoms in the alkyl group or a monomer mixture composed of at least more than 50% by weight of said alkyl ester of methacrylic acid onto 100 weight parts of an acrylic elastomer having a swelling degree of 5 to 25 so that the grafting ratio is not larger than 50%. The acrylic elastomer is obtained by polymerizing a mixture comprising an alkyl ester of acrylic acid having 2 to 10 carbon atoms in the alkyl group or a monomer mixture composed of at least 50% by weight of said alkyl ester of acrylic acid, and a polyfunctional crosslinking agent.Type: GrantFiled: November 6, 1985Date of Patent: May 5, 1987Assignee: Mitsubishi Rayon Company, Ltd.Inventors: Kazuo Kishida, Kazuo Ueda, Kiyokazu Kitai, Tsuruyoshi Matsumoto
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Patent number: 4657976Abstract: This invention relates to thermoplastic moulding compositions of vinyl chloride polymers, certain graft polymers, certain resin-like copolymer additives and certain rubber-like copolymers for the production of films having improved resistance to ageing.Type: GrantFiled: July 25, 1983Date of Patent: April 14, 1987Assignee: Bayer AktiengesellschaftInventors: Karl-Heinz Ott, Christian Lindner, Walter Uerdingen, Hans-Eberhard Braese, Helmut Hurnik
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Patent number: 4645795Abstract: A vinyl chloride polymer composition comprising (A) 3 to 50 parts by weight of a grafted copolymer and (B) 97 to 50 parts by weight of a vinyl chloride polymer, a total amount of the copolymer (A) and the polymer (B) being 100 parts by weight; the grafted copolymer (A) comprising(1) 50 to 80 parts by weight of a rubber copolymer and(2) 50 to 20 parts by weight of a grafting monomer, a total amount of the component (1) and the component (2) being 100 parts by weight;the component (1) comprising(a) 60 to 90% by weight of the rubber copolymer comprising 99 to 85% by weight of alkyl acrylate having an alkyl group of 2 to 8 carbon atoms, 1 to 15% by weight of conjugated diolefin and 0 to 5% by weight of polyfunctional cross-linking agent and(b) 40 to 10% by weight of a surface rubber copolymer comprising 98 to 70% by weight of alkyl acrylate having an alkyl group of 2 to 8 carbon atoms, 2 to 30% by weight of conjugated diolefin and 0 to 5% by weight of polyfunctional cross-linking agent and being obtained by polymType: GrantFiled: April 8, 1985Date of Patent: February 24, 1987Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Hideki Hosoi, Toshihiko Hasegawa, Taizo Aoyama
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Patent number: 4639473Abstract: Thermoplastic, high-impact moulding compositions of (A) 5 to 80 parts by weight of a graft product of 70 to 30% by weight of a mixture of an aromatic vinyl compound and acrylonitrile and/or methacrylonitrile on 30 to 70% by weight of a rubber having a glass transition temperature of below -10.degree. as the graft base and (B) 20 to 95 parts by weight of a terpolymer of styrene and/or .alpha.-methylstyrene, p-methylstyrene and acrylonitrile and/or methacrylonitrile, the terpolymer having been produced by mass polymerization.Type: GrantFiled: November 22, 1985Date of Patent: January 27, 1987Assignee: Bayer AktiengesellschaftInventors: Frank Wingler, Otto Koch, Joachim Doering, Karl-Heinz Ott, Lothar Liebig
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Patent number: 4600747Abstract: ABS-moulding compositions consisting of a thermoplastic copolymer and a graft polymer with rubber-like graft base exhibit an improved flame resistance if the total mixture contains a compound corresponding to the formulae ##STR1## polymerized into one or both components, wherein R.sub.1 represents C.sub.2 -C.sub.6 -alkylene,R.sub.2 represents hydrogen or methyl,R.sub.3 represents a direct bond or C.sub.1 -C.sub.4 -alkylene, andR.sub.4 represents hydrogen, methyl or CH.sub.2 --OOC--CH.sub.2 --CO--CH.sub.3.Type: GrantFiled: April 18, 1985Date of Patent: July 15, 1986Assignee: Bayer AktiengesellschaftInventors: Karl Zabrocki, Christian Lindner, Friedmann Muller, Joachim Doring
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Patent number: 4594387Abstract: A thermoplastic resin composition having toughness, high thermal deformation resistance, and good flowability which comprises a copolymer of .alpha.-methylstyrene and acrylonitrile, and/or vinyl monomer; a copolymer of diene olefin rubber grafted with methacrylic alkyl ester, vinyl aromatic compound, and/or vinyl cyanide; and polycarbonate.Type: GrantFiled: November 2, 1983Date of Patent: June 10, 1986Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Eiichi Muramatsu, Sigemi Mathumoto, Fumiya Nagoshi
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Patent number: 4585832Abstract: A weather and impact resistant resin composition which comprises: a graft copolymer (A) composed of a continuous phase comprising from 10 to 90% by weight of residues of an aromatic vinyl monomer, from 10 to 40% by weight of residues of an .alpha.,.beta.-unsaturated nitrile monomer and from 0 to 80% by weight of residues of methyl methacrylate, and particles of an acrylate rubber having a weight average particle size of from 0.1 to 0.45 .mu.m dispersed in the continuous phase, said acrylate rubber comprising from 70 to 98% by weight of residues of an alkyl acrylate having from 2 to 12 carbon atoms, from 1.92 to 27% by weight of residues of a vinyl monomer copolymerizable with the alkyl acrylate and from 0.08 to 3% by weight of residues of a multifunctional vinyl monomer; a graft copolymer (B) composed of a continuous phase comprising from 10 to 90% by weight of residues of an aromatic vinyl monomer, from 10 to 40% by weight of residues of an .alpha.,.beta.Type: GrantFiled: June 14, 1984Date of Patent: April 29, 1986Assignee: Mitsubishi Monsanto Chemical CompanyInventor: Takashi Kokubo
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Patent number: 4569970Abstract: The present invention relates toA. Thermoplastic moulding materials based on polydiorganosiloxane/polycarbonate block copolymers and ABS polymers andB. Thermoplastic moulding compositions based on polysiloxane/polycarbonate block copolymers, elastomeric polymers and, if appropriate, polyalkylene terephthalate.Type: GrantFiled: August 20, 1984Date of Patent: February 11, 1986Assignee: Bayer AktiengesellschaftInventors: Winfried Paul, Hans-Jurgen Kress, Wolfgang Stix, Christian Lindner, Dieter Neuray, Werner Nouvertne
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Patent number: 4567234Abstract: The impact resistance of resin compositions consisting of a thermoplastic polymer, particularly a homopolymer or copolymer of vinyl chloride, can be improved by an impact additive of the graft copolymer type. The graft copolymer impact additive consists of a backbone composed of a statistical copolymer of butadiene or isoprene, an alkyl acrylate of a C.sub.2 to C.sub.12 alkyl, and a polyfunctional cross-linking agent, onto which are grafted the chains of a polymer of an alkyl methacrylate of a C.sub.1 to C.sub.4 alkyl, particularly methyl methacrylate. The backbone of the graft copolymer impact additive comprises 0.5-35% by weight butadiene or isoprene, and up to 10 mole % of the cross-linking agent, while the weight ratio of grafted chains to the backbone can range from 10 to 200%.The resin compositions are particularly useful to improve impact strength at low temperatures.Type: GrantFiled: June 22, 1984Date of Patent: January 28, 1986Assignee: M&T Chemicals Inc.Inventor: Gilles Meunier
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Patent number: 4536545Abstract: Graft polymers are prepared by reacting an ethylenically unsaturated polymerizable monomer with a polymer of an olefin of 2 to about 8 carbon atoms in a process wherein the olefin polymer is substantially insoluble in the monomer but is capable of absorbing the monomer. In a preferred aspect, a vinyl halide polyolefin graft polymer is produced by reacting a solid polyolefin particle with a vinyl halide monomer in which the polyolefin is substantially insoluble, but is capable of absorbing the monomer. The solid particles can be contacted with the monomer in one step or in stages. When the stage-wise reaction is contined until the proportion of polyolefin in the polymer product is about 2 to about 20 weight percent, the resulting product can be formed to a transparent or translucent article.Type: GrantFiled: October 12, 1983Date of Patent: August 20, 1985Assignee: Occidental Chemical CorporationInventors: Joel L. Olener, Leigh E. Walker
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Patent number: 4536546Abstract: A novel methacrylate-based composition is disclosed. The composition is preferably used as an adhesive. The composition comprises an acrylate-based or methacrylate-based ester monomer, a catalyst, a chlorinated or chlorosulfonated polyethylene polymer resin and a graft co-polymer resin. The chlorinated polyethylene polymer resin used includes organic sulfonyl chloride. The composition preferably further includes an acrylate-based or methacrylate-based acid monomer, and a catalyst activator. A preferred chlorosulfonated polyethylene polymer resin contains about 43 weight percent chlorine, about 1.1 weight percent sulfur, and about 34 millimoles sulfonyl chloride moiety per 100 grams thereof. Preferred graft co-polymer resins are ABS, MBS, MABS, ASA, all-acrylic, SA EPDM and MAS. More-preferred graft co-polymer resins are MABS, ASA, all-acrylic and MBS. Most-preferred graft co-polymer resins are MABS and ASA. A preferred methacrylate-based acid monomer is methacrylic acid.Type: GrantFiled: September 22, 1983Date of Patent: August 20, 1985Assignee: Illinois Tool Works Inc.Inventor: Paul C. Briggs
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Patent number: 4522959Abstract: A process for the production of a pulverulent mixture consisting of(A) from 60 to 99 parts by weight of a brittle copolymer consisting of acrylonitrile and styrene, .alpha.-methylstyrene, methyl methacrylate or mixtures thereof, and(B) from 1 to 40 parts by weight of a flexible rubber-elastic polymer,by coagulating, in a first stage, a latex of (A) or a mixture of a latex of (A) and a part of a latex of (B), adding, in a second stage, the latex of (B) or the remaining part of the latex of (B), so that the desired quantity ratio of (A) to (B) is attained, and, in a third stage, separating the precipitated mixture of (A) and (B) from the aqueous phase, and drying it.Type: GrantFiled: March 28, 1984Date of Patent: June 11, 1985Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Karl-Heinz Ott, Hans-Eberhard Braese
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Patent number: 4520165Abstract: This invention relates to thermoplastic moulding compositions of the ABS-type produced in emulsion and having improved properties in relation to known ABS-moulding compositions, particularly extreme toughness coupled with ready processibility and high surface gloss.Type: GrantFiled: January 30, 1984Date of Patent: May 28, 1985Assignee: Bayer AktiengesellschaftInventors: Karl Zabrocki, Karl-Heinz Ott, Adolf Schmidt, Alfred Pischtschan
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Patent number: 4518515Abstract: This invention relates to thermoplastic moulding compositions of vinyl chloride polymers, certain graft polymers, certain resin-like copolymer additives and certain rubber-like copolymers for the production of films having improved resistance to ageing.Type: GrantFiled: July 25, 1983Date of Patent: May 21, 1985Assignee: Bayer AktiengesellschaftInventors: Karl-Heinz Ott, Christian Lindner, Walter Uerdingen, Hans-Eberhard Braese, Helmut Hurnik
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Patent number: 4518743Abstract: This invention relates to thermoplastic moulding compositions of vinyl chloride polymers, certain ABS-copolymers, certain resin-like copolymers, certain acrylate copolymers and, optionally, diene copolymers for the production of films having improved resistance to ageing.Type: GrantFiled: July 25, 1983Date of Patent: May 21, 1985Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Karl-Heinz Ott, Walter Uerdingen, Hans-Eberhard Braese, Helmut Hurnik
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Patent number: 4511695Abstract: The invention relates to soft polymer alloys based on graft polymers and crosslinked, particulate acrylate copolymers which are suitable for the production of flexible moulding compositions having increased resistance to ageing and better resistance to solvents.Type: GrantFiled: March 28, 1984Date of Patent: April 16, 1985Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Hans-Eberhard Braese, Karl-Heinz Ott, Walter Uerdingen
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Patent number: 4508871Abstract: Innately-transparent, polymethylmethacrylate polyblends, and transparent shaped articles therefrom fabricated, are comprised with components therein of:(a) polymethylmethacrylate; and(b) at least one copolymer of styrene (and/or equivalent vinyl aromatic monomers) with one or more of certain vinyl acids; plus and optionally or as an alternative;(c) at least one mass-made acrylonitrile-butadiene-styrene or acrylonitrile-butadiene-styrene-type resin in addition to or in replacement of and substitution for said component (b).Type: GrantFiled: February 28, 1983Date of Patent: April 2, 1985Assignee: The Dow Chemical CompanyInventors: Henno Keskkula, Kathleen M. McCreedy, Donald A. Maass
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Patent number: 4491621Abstract: An oil resistant diaphragm having a liquid contacting surface made of a vulcanized rubber composition of, or composed mainly of, partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units is hydrogenated. This diaphragm is superior in resistance to deteriorated gasoline and low temperature, and is suitable for the automobile fuel pump.Type: GrantFiled: November 19, 1982Date of Patent: January 1, 1985Assignees: Toyoda Gosei Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Tadaoki Okumoto, Masatoshi Sugimoto, Noriyuki Horiuchi, Seiichi Sahara, Tetsuo Yamada, Kinrou Hashimoto, Masayoshi Ichikawa, Fujio Ninomiya
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Patent number: 4487886Abstract: The invention relates to a process for the production of an object from a granular ABS polymer composition, said composition comprising a mixture ofI 10-98 parts by weight of one or more graft copolymers obtained by polymerizing a mixture of one or more unsaturated nitriles and one or more vinylaromatic compounds in the presence of a rubber.II 2-90 parts by weight of a copolymer of one or more unsaturated nitriles and one or more vinylaromatic compounds, andIII 0-20 parts by weight of one or more additives, wherein the polymer composition is melted, homogenized, and extruded or injection molded into an object.To improve the flow properties of the mixture introduced into the processing equipment and the throughput of this equipment the invention is characterized in that the ratio between the average particle size (by weight) of the copolymer II to the average particle size (by weight) of the graft copolymer I exceeds 1.5.Type: GrantFiled: October 24, 1983Date of Patent: December 11, 1984Assignee: Stamicarbon B.V., Licensing Subsidiary of DSMInventors: Leslie G. W. Dunning, Jean P. L. M. N. de Warrimont
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Patent number: 4476266Abstract: (1) A graft copolymer latex obtained by the copolymerization of a rubbery diene polymer latex with an aromatic vinyl monomer and an acrylic monomer is mixed with (2) a copolymer latex having a glass transition point of -40.degree. to 10.degree. C. and a volume-average particle size of at least 0.5.mu. obtained by the copolymerization of an olefin with a vinyl ester of a fatty acid while they are maintained in the form of latex to precipitate a solid resin, whereby a thermoplastic resin composition is obtained. The total solid resin contains at least 11 wt. % of the rubbery diene polymer and at least 1 wt. % of the copolymer of olefin/vinyl ester of fatty acid.Type: GrantFiled: November 10, 1982Date of Patent: October 9, 1984Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Tetsuro Maeda, Susumu Ohoka, Masafumi Shingai, Haruo Igawa
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Patent number: 4451617Abstract: A miscible polyblend comprising an .alpha., .beta.-ethylencially unsaturated dicarboxylic acid or its anhydride copolymerized with at least one monovinyl-substituted aryl hydrocarbon monomer and an imide derivative of maleic anhydride copolymerized with at least one monovinyl-substituted-aryl hydrocarbon monomer is disclosed.Type: GrantFiled: August 16, 1982Date of Patent: May 29, 1984Assignee: Atlantic Richfield CompanyInventor: Bi L. Khac
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Patent number: 4448580Abstract: A thermoplastic resin having an excellent thermal stability and a high heat resistance is prepared by initiating polymerization of 65-85 parts by weight of a monomer mixture (A) consisting of 50-85% by weight of .alpha.-methylstyrene, 3-20% by weight of methyl methacrylate, 2-20% by weight of acrylonitrile, and 0-25% by weight of an aromatic alkenyl compound other than .alpha.-methylstyrene, continuously or intermittently adding, on the way of the polymerization, 2-15 parts by weight of a monomer (B) consisting of acrylonitrile or a mixture thereof with an aromatic alkenyl compound other than .alpha.-methylstyrene to the polymerization system while continuing the polymerization, further adding to the polymerization system 5-25 parts by weight of a monomer (C) consisting of an aromatic alkenyl compound other than .alpha.Type: GrantFiled: September 23, 1982Date of Patent: May 15, 1984Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Mitsuo Abe, Syuji Tsuchikawa, Teizo Fukuta, Tsugio Asakawa
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Patent number: 4448932Abstract: This invention relates to a polyvinyl chloride resin composition containing said resin and a significant amount of a polymer of butadiene in the form of a shell-core polymer wherein a polymer of methylmethacrylate forms said shell and completely encapsulates the core containing the butadiene polymer.Type: GrantFiled: September 2, 1982Date of Patent: May 15, 1984Assignee: GAF CorporationInventors: Yehuda Ozari, Suzanne B. Nelsen, Andrew Klein
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Patent number: 4443585Abstract: Impact modifiers having high efficiency at low levels and at low temperatures comprising at least three stages, Stage A being a non-crosslinked polymer of at least 70% butadiene and at least 10% lower alkyl (C.sub.2 -C.sub.8) acrylate, Stage B being a polymer of at least 80% styrene, and Stage C containing at least 50% methyl methacrylate and at least 1% alkyl (C.sub.1 -C.sub.4) acrylate, the ratio of Stages A:B:C, excluding optional additional stages, being about 70-85:10-15:10-20, the ratio of stages C:B being at least 1, and Stage A being non-agglomerated are disclosed. Also disclosed are methods of preparing the impact modifier and thermoplastic polymer compositions containing the impact modifier.Type: GrantFiled: July 12, 1983Date of Patent: April 17, 1984Assignee: Rohm and Haas CompanyInventor: Theodore D. Goldman
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Patent number: 4442263Abstract: Thermoplastic molding materials contain a copolymer A and a graft copolymer B. The copolymer A is a hard component comprising one or more copolymers of styrene and/or .alpha.-methylstyrene with from 20 to 40% by weight of acrylonitrile.The graft copolymer B comprises one or more crosslinked acrylate polymer with a mean particle size of 0.5-0.8 .mu.m (d.sub.50 value of the cumulative mass distribution), a particle distribution, expressed by the ratio ##EQU1## in the range Q.gtoreq.0.6, and a glass transition temperature Tg below 0.degree. C. A mixture of styrene and acrylonitrile in a weight ratio from 88:12 to 65:35 is grafted onto this rubber.Type: GrantFiled: July 16, 1982Date of Patent: April 10, 1984Assignee: BASF AktiengesellschaftInventors: Franz Brandstetter, Juergen Hambrecht, Rudolf Stephan, Heinz-Juergen Overhoff, Josef Schwaab, Claus Bernhard, Johann Swoboda, Adolf Echte
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Patent number: 4433102Abstract: A thermoplastic molding material contains 50-90% by weight of a hard component A comprising one or more copolymers of styrene and/or .alpha.-methylstyrene with acrylonitrile, and 50-10% by weight of a graft copolymer B comprising 40-80% by weight of a crosslinked acrylate polymer which has a mean particle size greater than 0.8 .mu.m (d.sub.50 value of the cumulative mass distribution) and onto which 20-60% by weight of a mixture of styrene and acrylonitrile in a weight ratio of from 88:12 to 65:35 is grafted.The novel molding material is used for the production of moldings.Type: GrantFiled: July 19, 1982Date of Patent: February 21, 1984Assignee: BASF AktiengesellschaftInventors: Franz Brandstetter, Juergen Hambrecht, Rudolf Stephan
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Patent number: 4425459Abstract: The impact strength of poly(p-methylstyrene) is improved by incorporating both a thermoplastic elastomer and a non-thermoplastic diene elastomer during the polymerization of the p-methylstyrene.Type: GrantFiled: December 23, 1982Date of Patent: January 10, 1984Assignee: Shell Oil CompanyInventor: Robert A. Fletcher
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Patent number: 4412938Abstract: A semiconducting resin composition comprises: (A) 100 to 40 parts of a modified ethylene-vinyl acetate copolymer prepared by graft processing of 100 parts of an ethylene-vinyl acetate copolymer of a vinyl acetate content of less than 35 percent with 25 to 200 parts of an aromatic vinyl monomer; (B) 0 to 60 parts of a rubber; and (C) 3 to 150 parts of a carbon black with respect to 100 parts of the above described components (A) and (B), all quantities in "parts" and "percent" being by weight. A composition of this character has excellent characteristics for its use in forming the outer semiconducting layer of polyethylene-insulated cables.Type: GrantFiled: October 20, 1980Date of Patent: November 1, 1983Assignee: Mitsubishi Petrochemical Company LimitedInventors: Tetsuji Kakizaki, Toshikazu Mizutani
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Patent number: 4393164Abstract: Transparent, impact-resistant thermoplastic molding materials produced from a rigid methylmethacrylate polymer A, a rigid styrene-acrylonitrile polymer B and a flexible graft copolymer C, made from grafting an alkylmethacrylate and optionally styrene onto a rubber grafting base.Type: GrantFiled: March 26, 1982Date of Patent: July 12, 1983Assignee: BASF AktiengesellschaftInventors: Graham E. McKee, Franz Haaf, Juergen Hambrecht, Klaus Benker, Rudolf Stephan, Hans Breuer
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Patent number: 4393172Abstract: A particulate graft polymer comprising (a) a core formed by a crosslinked homopolymer of a conjugated diene or a copolymer thereof with up to 10% by weight of styrene or acrylonitrile; (b) a first shell formed by a crosslinked homopolymer of an acrylic acid alkyl ester or a copolymer thereof with up to 30% by weight of vinyl monomers; (c) a second shell formed by a polymer of resin-forming monomers, a process for manufacturing these graft polymers by means of a multi-stage emulsion polymerization, and their application as molding compositions, optionally together with rigid thermoplastic resins.Type: GrantFiled: October 8, 1981Date of Patent: July 12, 1983Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Karl-Heinz Ott, Alfred Pischtschan
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Patent number: 4376843Abstract: The invention relates to notched impact resistant thermoplastic moulding compositions obtained from1. 1 to 99% by weight, preferably 10 to 95% by weight, especially 70 to 98% by weight, of a thermoplastic vinyl chloride polymer, and2. 99 to 1% by weight, preferably 90 to 5% by weight, especially 2 to 30% by weight, or a particulate graft copolymer consisting of a nucleus (a) of a highly crosslinked diene rubber, a first covering (b) of a crosslinked acrylate rubber, and a second covering (c) of a polymer or copolymer of resin-forming monomers, viz. Styrene, .alpha.-methylstyrene, acrylonitrile, methacrylonitrile, acrylic acid esters and methacrylic acid esters.Type: GrantFiled: June 5, 1981Date of Patent: March 15, 1983Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Hans-Eberhard Braese, Karl-Heinz Ott
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Patent number: 4366281Abstract: A molding resin composition comprising [A] 100 parts by weight of a vinyl chloride resin, [B] 30-110 parts by weight of a graft copolymer wherein 90-50 parts by weight of a monomer mixture consisting of 10-40% by weight of an alkenyl aromatic compound, 20-50% by weight of an alkenyl cyanide compound and 20-50% by weight of a methacrylate is graft-copolymerized on 10-50 parts by weight of polybutadiene or a rubbery copolymer of 60% by weight or more of butadiene and a vinyl monomer copolymerizable therewith (the amount of toluene-insoluble fraction is preferably 50% by weight or less), the degree of grafting being 30-110% and the acetone-soluble fraction of the graft copolymer having an intrinsic viscosity of 0.4-1.5 dl/g as measured in methyl ethyl ketone at 30.degree. C., [C] 3-50 parts by weight of a rubbery acrylonitrile-butadiene copolymer and [D] 15-100 parts by weight of a plasticizer for vinyl chloride resins.Type: GrantFiled: October 29, 1980Date of Patent: December 28, 1982Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Mitsuo Abe, Akira Kamiya, Junya Itoh, Masaaki Mawatari, Fumio Kurihara
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Patent number: 4366289Abstract: Nicely compatibilized polymer blends (i.e., "polyblends") exhibiting attendant physical properties which are generally improved over those intrinsically coincident with the individual polymeric ingredients therein are comprised, as fundamental Components therefor, of:(A) a substantial and effectively compatibilizing quantity of a graft or block inter- or copolymer of methyl methacrylate (i.e., "MMA") and/or equivalent acrylate monomer(s) on or with a synthetic or natural rubber elastomer (i.e., "EL") substrate as a basic component of the polyblend which is referred to hereinafter as an MMA-grafted rubber concentrate or, by way of simplified acronymical definition of same, a "GRC(MMA)" which is constitutionally substantially if not entirely free of any non-interpolymerized polymethylmethacrylate (i.e.Type: GrantFiled: April 20, 1981Date of Patent: December 28, 1982Assignee: The Dow Chemical CompanyInventors: Henno Keskkula, Donald A. Maass, Kathleen M. McCreedy
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Patent number: 4362845Abstract: A composition with high impact resistance and little fish eyes content, comprising 97 to 60 parts by weight of a polyvinyl chloride-base resin and 3 to 40 parts by weight of a graft copolymer obtained by the three-stage graft-polymerization of 65 to 25 parts by weight of a monomer combination (B) comprising 12 to 57% by weight of methyl methacrylate, 1 to 24% by weight of at least one of alkyl acrylates having a C.sub.Type: GrantFiled: December 9, 1981Date of Patent: December 7, 1982Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kazumasa Kamata, Kazuo Kishida, Kazuo Ueda, Norihisa Osaka
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Patent number: 4357444Abstract: Rubbery, tacky polymer is mechanically subdivided in the presence of fine particles of substantially thermoplastic halogenated polymer.Type: GrantFiled: November 12, 1981Date of Patent: November 2, 1982Assignee: PPG Industries, Inc.Inventor: Patrick E. Hillman
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Patent number: 4352910Abstract: As an impact modifier copolymer to be blended with a vinyl chloride resin, a multilayer copolymer comprising a hard core polymer containing a relatively small quantity of a conjugated diene, a rubbery inner layer polymer containing a relatively large quantity of a conjugated diene, and an outer layer polymer comprising, for example, a copolymer of styrene and methyl methacrylate which is compatible with a vinyl chloride resin is used, whereby a vinyl chloride resin composition well balanced between impact strength and anti-stress-whitening property can be obtained.Type: GrantFiled: October 20, 1981Date of Patent: October 5, 1982Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Takayuki Katto, Zenya Shiiki
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Patent number: 4345040Abstract: The invention relates to porous post-chlorinated polyvinyl chloride resins which contain or have incorporated therein a salt of phosphoric acid resulting in a substantial improvement in the thermal stability thereof during subsequent processing. The phosphate salt is added to the porous post chlorinated polymer from an aqueous solution thereof which optionally contains a surfactant, which wets the polymer particles and allows the penetration thereof by the solution. Post chlorinated polyvinyl chloride (CPVC) is the most preferred polymer or resin.Type: GrantFiled: June 16, 1980Date of Patent: August 17, 1982Assignee: The B. F. Goodrich CompanyInventor: Dale R. Hall
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Patent number: 4337324Abstract: A monomer mixture comprising .alpha.-methylstyrene or 2-isopropenylnaphthalene, methyl methacrylate, and acrylonitrile is polymerized in the presence of a crosslinked polymer obtained by copolymerizing a monofunctional monomer such as .alpha.-methylstyrene with a small quantity of a polyfunctional monomer such as divinylbenzene to obtain a copolymer (C). A vinyl chloride resin composition formulated by blending the copolymer (C) thus obtained with a vinyl chloride resin and an impact strength modifier resin in a specific proportion possesses improved thermal deformation resistance and impact strength while retaining processability comparable to that of the vinyl chloride resin mixed with the impact strength modifier resin.Type: GrantFiled: January 19, 1981Date of Patent: June 29, 1982Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Haruhiko Yusa, Yo Iizuka, Humio Akutsu
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Patent number: 4331775Abstract: The invention relates to porous post-chlorinated polyvinyl chloride resins which contain or have incorporated therein a salt of phosphoric acid resulting in a substantial improvement in the thermal stability thereof during subsequent processing. The phosphate salt is added to the porous post chlorinated polymer from an aqueous solution thereof which optionally contains a surfactant, which wets the polymer particles and allows the penetration thereof by the solution. Post chlorinated polyvinyl chloride (CPVC) is the most preferred polymer or resin.Type: GrantFiled: April 29, 1981Date of Patent: May 25, 1982Assignee: The B.F. Goodrich CompanyInventor: Dale R. Hall
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Patent number: 4315081Abstract: A graft copolymer is obtained by graft-polymerizing an ethylenically unsaturated monomer onto a rubber trunk polymer which is a copolymer of a polyalkylene oxide monomer comprising 4 to 500 alkylene oxide groups together with an ethylenic unsaturation, and a conjugated diene and/or an alkyl acrylate. By adding an anionic surfactant to a base resin which comprises this graft copolymer alone or a mixture of this graft copolymer and another thermoplastic resin, an antistatic resin composition can be obtained. The resin composition thus obtained possesses excellent and permanent antistatic property that is not lowered by washing or wiping as is the case with conventional antistatic resins comprising an antistatic agent.Type: GrantFiled: February 18, 1981Date of Patent: February 9, 1982Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Akio Kobayashi, Takayuki Katto
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Patent number: 4302378Abstract: ABS-moulding compositions of (a) 5 to 70% by weight of one or more graft products and (b) 95 to 30% by weight of one or more thermoplastic resins with a content of 0.05 to 1% by weight (based on total moulding composition) of a perfluoroalkane acid or a derivative thereof to improve notched impact strength.Type: GrantFiled: April 2, 1980Date of Patent: November 24, 1981Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Karl-Heinz Ott, Bernhard Arnold, Friedrich Kowitz, Dieter Kuhlmann
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Patent number: 4297446Abstract: ABS-moulding compositions of (a) 5 to 70% by weight of one or more graft products and (b) 95 to 30% by weight of one or more thermoplastic resins with a content of 0.05 to 2.0% by weight (based on total mixture) of a silico urethane derivative to improve notched impact strength.Type: GrantFiled: August 24, 1979Date of Patent: October 27, 1981Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Karl-Heinz Ott, Bernhard Arnold, Friedrich Kowitz, Harald Oertel, Dieter Kuhlmann
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Patent number: 4287312Abstract: A process for producing a graft-polymer comprises adding an aqueous solution of a salt of a strong acid and a monovalent strong base, which solution has been adjusted to a pH value of 8 to 13, to a rubber latex containing diene rubber particles and a fatty acid soap as an emulsifying agent to coagulate the above mentioned rubber particles, and thereafter adding a vinyl monomer to the latex containing the coagulated rubber particles to graft-polymerize the vinyl monomer.According to this process, the formation of rubber masses and macroparticles during the coagulation is reduced and a rubber latex containing rubber particles having a narrow range of particle size distribution is obtained. When a graft-copolymer obtained by using the latex is blended with thermoplastic resins such as vinyl chloride resins, the impact resistance of the thermoplastic resins can be remarkably improved without impairing their transparency and gloss.Type: GrantFiled: April 10, 1979Date of Patent: September 1, 1981Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Haruhiko Yusa, Masanori Oota, Katumi Suzuki
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Patent number: 4287316Abstract: A transparent resin composition comprising (1) 6 to 100% by weight of a nitrile graft copolymer comprising a rubber trunk polymer and a branch polymer grafted thereon, which has been obtained by graft-polymerizing onto the rubber trunk polymer a monomer mixture containing an unsaturated nitrile and a monomer copolymerizable therewith, and (2) 0 to 94% by weight of a random copolymer of an unsaturated nitrile and a monomer copolymerizable therewith, the resin components of the resin composition other than the rubber trunk polymer constituting a matrix resin, wherein(a) said rubber trunk polymer has a glass transition temperature of not higher than 0.degree. C. and constitutes 4 to 25% by weight of the resin composition,(b) the unsaturated nitrile constitutes 25 to 90% by weight of the matrix resin in the resin composition,(c) the difference in the refractive indexes between the rubber trunk polymer and the matrix resin is not more than 0.Type: GrantFiled: April 19, 1979Date of Patent: September 1, 1981Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Akira Kaneko, Masaki Ohya, Masayasu Suzuki, Akio Kobayashi
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Patent number: 4277573Abstract: A vinyl chloride resin composition comprises:(1) 100 parts of vinyl chloride polymer; and(2) 0.1 to 30 parts of a polymer processing aid comprising:(A) 40 to 90 parts of a copolymer comprising80 to 100% of an alkyl methacrylate, and0 to 20% of a monomer copolymerizable therewith; and(B) 60 to 10 parts of a copolymer comprising20 to 79% of an alkyl methacrylate,20 to 79% of an aromatic vinyl monomer,1 to 49% of diolefin, and0 to 20% of a monomer copolymerizable therewith,the copolymers (A) and (B) having been wet-blended to provide 100 parts of the polymer processing aid, all quantities expressed in parts and percentages being by weight.Type: GrantFiled: October 17, 1979Date of Patent: July 7, 1981Assignee: Kureha Kagaku Kogyo Kabushiki KaishiInventors: Yo Iizuka, Susumu Midorikawa, deceased, Kiyoshi Midorikawa, heir, Yumi Midorikawa, heir