Substrate Polymer Derived From Hydrocarbon Containing Plural Unsaturation Patents (Class 525/83)
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Patent number: 5286792Abstract: Acrylonitrile-butadiene-styrene-ester compositions having a unique rubber phase morphology are prepared by a continuous mass polymerization process. The compositions have an improved balance between impact and tensile strengths and gloss.Type: GrantFiled: September 4, 1990Date of Patent: February 15, 1994Assignee: Monsanto CompanyInventors: Wan C. Wu, Vincent A. Aliberti
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Patent number: 5270387Abstract: A rubber-modified, rigid, heat- and impact resistant polymer composition comprising:(a) an interpolymer comprising monovinylidene aromatic monomer, maleimide monomer and ethylenically unsaturated nitrile monomer polymerized therein; and(b) from about 7 to about 25 weight percent of a first graft copolymer prepared by an emulsion process and comprising from about 30 to about 70 weight percent of a copolymer (A) comprising in polymerized form from about 10 to about 60 weight percent of an ethylenically unsaturated nitrile monomer and from about 40 to about 90 weight percent of a copolymerizable monovinylidene aromatic monomer, the copolymer (A) being grafted at least in part to a rubbery substrate polymer (B) which is from about 30 to about 70 percent of the graft copolymer by weight and has a rubber particle size distribution wherein the average particle size is from about 0.05 to about 0.Type: GrantFiled: April 3, 1991Date of Patent: December 14, 1993Assignee: The Dow Chemical CompanyInventors: Nigel Sheilds, Gerard B. van de Langkruis
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Patent number: 5268430Abstract: Multi-stage rubber-based MBS resin compositions are provided which include a polymeric substrate stage of a conjugated diolefin-based polymer or copolymer and optional units derived from a cross-linking agent or agents, and at least one polymeric graft stage graft polymerized in the presence of the substrate stage which include monomers of an acrylate, a vinyl aromatic, or a mixture of those monomers and optional units derived from a cross-linking agent or agents and/or units which serve as a graft-linking agent or agents wherein the weight ratio of acrylate in all graft stages combined to vinyl aromatic in all graft stages combined is at least 1.2:1. Additionally, modified vinyl chloride polymer compositions which include a vinyl chloride polymer or copolymer in combination with an impact modifying, yellowness index improving amount of the multi-stage rubber-based resin compositions above are provided.Type: GrantFiled: September 16, 1991Date of Patent: December 7, 1993Assignee: General Electric CompanyInventor: I-Chung W. Wang
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Patent number: 5254622Abstract: A resin composition comprising a graft copolymer of a rubbery polymer having a vinyl cyanide compound and an aromatic vinyl compound grafted thereon, and a copolymer comprising a vinyl cyanide compound and an aromatic vinyl compound. A molded article of the resin composition is characterized with improved coating performances.Type: GrantFiled: November 27, 1991Date of Patent: October 19, 1993Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Atsushi Nanasawa, Noriaki Umeda
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Patent number: 5250617Abstract: Polymer blends of(a) graft polymers of vinyl monomers on an alkyl acrylate rubber(b) a partly crosslinked acrylate-based copolymer rubber(c) a resin-like copolymer(d) an ethylene/vinyl acetate copolymer,a process for their production and their use as thermoplastic molding compounds.Type: GrantFiled: July 27, 1992Date of Patent: October 5, 1993Assignee: Bayer AktiengesellschaftInventors: Karl-Erwin Piejko, Hans Wunderlich, Hans-Eberhard Braese, Christian Lindner
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Patent number: 5242976Abstract: A composition is provided which is coextrudable with vinylidene polyfluoride permitting it to adhere to incompatible polymeric resins, the composition which has a base of an alkyl polymethacrylate and a thermoplastic polymer is comprised of:from 27 to 50 parts by weight of an alkyl polymethacrylate; andfrom 73 to 50 parts by weight of an additive itself constituted for 100 portions by weight of additive of:from 35 to 50 parts by weight of PVDF, andfrom 65 to 50 parts by weight of acrylic or methacrylic elastomer.This composition serves to produce vinylidene polyfluoride compounds capable of coating polymers which are non-compatible with vinylidene polyfluoride. When used as an adhesion agent, one can obtain by coextrusion, compounds of vinylidene polyfluoride and polymers non-compatible with the vinylidene polyfluoride.Type: GrantFiled: February 21, 1991Date of Patent: September 7, 1993Assignee: Societe AtochemInventors: Albert Strassel, Gilbert Duperray, Philippe Rocher
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Patent number: 5219915Abstract: Thermoplastic molding materials based on a mixture of polybutylene terephthalate and polyethylene terephthalate (a.sub.1), graft polymers having acrylate rubbers as the grafting base (a.sub.2), copolymers of vinylaromatic monomers and acrylonitrile or methacrylonitrile (a.sub.3) and glass fibers (B) have a balanced property spectrum.Type: GrantFiled: September 20, 1991Date of Patent: June 15, 1993Assignee: BASF AktiengesellschaftInventors: Graham E. McKee, Manfred Knoll, Peter Kolm, Dietrich Lausberg
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Patent number: 5208288Abstract: A modified nonflammable molding resin composition. The composition is a blend of (A) a nonflammable resin composition composed of 30 to 80% by weight of a styrene resin having a methyl ethyl keton-soluble portion having a reduced viscosity of 0.2 to 0.5 dl/g and 70 to 20% by weight of a vinyl chloride resin having a polymerization degree of 400 to 800; and 0.5 to 15 parts, based on 100 parts by weight of the nonflammable resin composition (A), of (B) a copolymer of a vinyl cyanide, an alkyl methacrylate, an aromatic vinyl compound and another copolymerizable vinyl monomer in specified ratios and having a reduced viscosity of not less than 1.8 dl/g. The composition has improved heat stability in injection molding and excellent heat resistance.Type: GrantFiled: April 12, 1991Date of Patent: May 4, 1993Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Ikuhiro Mishima, Kenji Nishimoto, Hideki Hosoi
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Patent number: 5206288Abstract: Adhesive compositions are made from methacrylate ester monomers, elastomeric polymers having a Tg below -25.degree. C. and which are soluble in the monomers, core-shell polymers which swell in the monomers but do not dissolve therein, and free radical producing catalysts. These adhesive compositions when used in bonded assemblies exhibit a combination of high adhesive bond impact strength and high bulk tensile elongation.Type: GrantFiled: July 5, 1990Date of Patent: April 27, 1993Assignee: Illinois Tool Works, Inc.Inventors: Donald E. Gosiewski, Paul C. Briggs
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Patent number: 5188751Abstract: A vinyl chloride resin composition having an improved impact resistance with a good transparency which includes (A) a graft copolymer reinforcing agent prepared by emulsion-polmerizing 15 to 35 parts by weight of a monomer mixture in the presence of 85 to 65 parts by weight of a butadiene homopolymer or copolymer having a butadiene content as high as 82% by weight or more, said monomer mixture containing of 50 to 95% by weight of an aromatic vinyl monomer such as styrene, 0.1 to 40% by weight of a vinyl cyanide monomer such as acrylonitrile and 0 to 40% by weight of other vinyl monomer copolymerizable therewith, and (B) a vinyl chloride resin.Type: GrantFiled: March 22, 1990Date of Patent: February 23, 1993Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Akira Takaki, Hirokazu Iguchi, Satoshi Suzuki, Hiroto Mori, Hideki Hosoi
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Patent number: 5183851Abstract: This invention relates to low haze impact-resistant transparent compositions, comprising:(a) 40-99% by weight of a thermoplastic resin based on homopolymers and/or copolymers of alkyl-methacrylates with minor amounts of alkyl-acrylates, wherein the alkyl group contains from 1 to 8 carbon atoms, and(b) 60-1% by weight of a polymer having a multi-layer structure, based on elastomers arranged sequentially to thermoplastic resins as defined in step (a).Type: GrantFiled: September 3, 1991Date of Patent: February 2, 1993Assignee: ELF Atochem Italia S.r.l.Inventors: Francesco Visani, Carlo Tavazzani, Giuseppe Ajroldi, Giovanni Castiglioni
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Patent number: 5180778Abstract: Thermoplastic molding materials containA) not less than 5% by weight of a polymer component consisting of from 50 to 100% by weight of polyphenylene ethers and from 0 to 50% by weight of a styrene polymer differing from component C),B) not less than 5% by weight of a polyester,C) not less than 0.1% by weight of a copolymer consisting ofC.sub.1) not less than 20% by weight of .alpha.-olefins of 2 to 8 carbon atoms, styrene or substituted styrenes of the general formula I ##STR1## where R and R.sup.1 is alkyl of 1 to 8 carbon atoms, hydrogen and/or halogen and n is 0, 1 or 2, or a mixture of these monomers,C.sub.2) not less than 0.5% by weight of a polymerizable monomer containing epoxide groups, and/orC.sub.3) not less than 0.05% by weight of a halobenzyl-containing polymerizable monomer having the structural unit (II) ##STR2## where X is halogen and R.sup.2 and R.sup.3 are each alkyl of 1 to 8 carbon atoms or hydrogen and n is 1, 2 or 3, and/orC.sub.4) not less than 0.Type: GrantFiled: August 29, 1990Date of Patent: January 19, 1993Assignee: BASF AktiengesellschaftInventors: Christof Taubitz, Erhard Seiler, Klaus Boehlke, Dietrich Lausberg
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Patent number: 5169903Abstract: Disclosed is a methacrylic resin cast plate which is comprised of 100 parts by weight of [I] polymethyl methacrylate or a methyl methacrylate copolymer containing at least 90% by weight of methyl methacrylate units and, dispersed therein, a graft copolymer [IV] obtained by graft-polymerizing a hard resin component [III] containing at least 90% by weight of methyl methacrylate units onto a crosslinked rubbery copolymer [II] containing at least 45% by weight of butyl acrylate units and having an average particle diameter of 0.1 to 1 .mu.m, the amount of the graft copolymer [IV] being 2 to 30 parts by weight as the amount of the crosslinked rubbery copolymer.Type: GrantFiled: April 3, 1991Date of Patent: December 8, 1992Assignee: Mitsubishi Rayon Company Ltd.Inventors: Akihiro Toritani, Suehiro Tayama, Yasunori Kawachi
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Patent number: 5166261Abstract: Disclosed herein is a continuous mass polymerization process for the preparation of acrylonitrile-butadiene-styrene-ester polymers (ABSE) having a balance of gloss, tensile strength, impact strength, processability and heat resistance properties.Type: GrantFiled: September 4, 1990Date of Patent: November 24, 1992Assignee: Monsanto CompanyInventors: Wan C. Wu, Vincent A. Aliberti
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Patent number: 5157076Abstract: In a preferred embodiment, the invention herein relates to blends of a PVC-containing thermoplastic material and an impact modifier which blends have improved abrasion resistance and a reduced adhesion to glass, said impact modifier has Shore A hardness greater than 70 and is used in an amount of greater than 50 weight parts per 100 weight parts of said thermoplastic material.Type: GrantFiled: June 17, 1991Date of Patent: October 20, 1992Assignee: The B.F. Goodrich CompanyInventors: William S. Greenlee, Josef C. Vyvoda, Roman W. Wypart
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Patent number: 5147700Abstract: The invention relates to thermoplastic molding compositions of PVC and (ter)polymers which can optionally be grafted on to a resin and are suitable for the production of optical discs by virtue of their extremely low double refraction.Type: GrantFiled: May 17, 1990Date of Patent: September 15, 1992Assignee: Bayer AktiengesellschaftInventors: Horst Bruggemann, Dieter Freitag, Lothar Meier, Christian Lindner, Hans-Eberhard Braese
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Patent number: 5147932Abstract: The addition of a polyolefin-acrylic graft copolymer to blends of polyolefin and core-shell polymers improves compatibility and allows core-shell polymers to be used as processing and performance modifiers polyolefins. Generally the compatibilizing additive is a graft copolymer of a polyolefin and a metharcylate. More specifically, the graft copolymer is derived from at least about 80% of a monomer of a methacrylic ester of the formula CH.sub.2 .dbd.C(CH.sub.3)COOR, where R may be alkyl, aryl, or aralkyl, substituted or unsubstituted, and less than 20%, based on a total monomer weight, of an acrylic or styrenic monomer copolymerizable with the methacrylic ester grafted on to a non-polar polyolefin trunk, so that at least one chain is a polymer with a weight average molecular weight greater than about 20,000 and is present in a weight ratio with the polyolefin trunk of from about 1:9 to about 4:1.Type: GrantFiled: January 31, 1992Date of Patent: September 15, 1992Assignee: Rohm and Haas CompanyInventors: Casmir S. Ilenda, David L. Dunkelberger, Dennis J. Labanoski
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Patent number: 5143973Abstract: The invention relates to thermoplastic molding compositions of PVC and (ter)polymers which can optionally be grafted on to a resin and are suitable for the production of optical discs by virtue of their extremely low double refraction.Type: GrantFiled: April 23, 1990Date of Patent: September 1, 1992Assignee: Bayer AktiengesellschaftInventors: Horst Bruggemann, Dieter Freitag, Lothar Meier, Christian Lindner, Hans-Eberhard Braese
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Patent number: 5120788Abstract: A thermoplastic molding material containing (based on the sum of A+B+C)A: from 1 to 30% by weight of one or more elastomeric polymers A having a mean particles size of from 30 to 1000 nm and comprising, based on A,A1: from 50 to 99.9% by weight of one or more alkyl acrylates A1 having from 1 to 8 carbon atoms in the alkyl radical,A2: from 0.Type: GrantFiled: February 20, 1991Date of Patent: June 9, 1992Assignee: BASF AktiengesellschaftInventors: Friedrich Seitz, Karl Ruppmich
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Patent number: 5112903Abstract: Articles molded from a moisture shrinkable polymer are provided. The article are stretched. The moisture shrinkable polymer may comprise a graft copolymer, a block copolymer, or a blend of a thermoplastic polymer with a hydrophilic synthetic polymer or a polysaccharide. The article absorb moisture and shrink at room temperature of not more than 50.degree. C. in a highly humid atmosphere. The articles experience little decrease in tensile strength during shrinkage by moisture absorption or by prolonged storage after the moisture absorption. The article is useful when used as a film for shrink wrapping commodities which are not resistant to heat.Type: GrantFiled: July 2, 1990Date of Patent: May 12, 1992Assignee: Sanyo Chemical Industries, Ltd.Inventors: Megumu Sakakibara, Keiji Tanaka, Youji Fujiura
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Patent number: 5112910Abstract: Process for the preparation of mixtures of thermoplastic polymers in powder form from aqueous emulsions ofa) particulate, partly crosslinked rubber-like copolymers of a C.sub.2 -C.sub.8 -alkyl acrylate and/or butadiene with (based on the copolymer) up to 40 wt. % acrylonitrile, styrene or C.sub.1 -C.sub.4 -alkyl methacrylate,b) a thermoplastic resin, and if appropriatec) a rubber-rich graft polymer of styrene, .alpha.-methylstyrene, acrylonitrile, methyl methacrylate and/or alkyl acrylate on a diene or alkyl acrylate rubber having a rubber content of 50 to 95 wt. %,wherein aqueous emulsions of a) and b) and if appropriate c) having polymer contents of 15 to 50 wt. % are mixed with a coagulate solution simultaneously, but in separate streams, continuously or semi-continuously at 20.degree. to 100.degree. C., the polymers a) and b) and if appropriate c) being coagulated, the streams are combined and the polymer mixture is then separated off.Type: GrantFiled: August 12, 1991Date of Patent: May 12, 1992Assignee: Bayer AGInventors: Karl-Erwin Piejko, Christian Lindner, Ralph Ostarek, Hans-Eberhard Braese, Karl-Heinz Ott
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Patent number: 5086113Abstract: Terpolymers of various amounts of polymer repeat units of ethylene, ethyl acrylate, and carbon monoxide are intimately admixed with acrylonitrile/butadiene/styrene (ABS) resin to form a blend with a flex modulus of at least 1700 MPa. The resulting blend has enhanced impact strength properties over the resin alone. Such blends are useful as molding resins. The process for preparation of the blend involves admixing the terpolymer with the ABS resin.Type: GrantFiled: November 28, 1990Date of Patent: February 4, 1992Assignee: E. I. Du Pont de Nemours & CompanyInventors: Kathryn A. Kamins, Robert J. Statz
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Patent number: 5053456Abstract: The invention relates to a polyblend comprising from 20 to 80% of a polymer A and from 80 to 20% of a polymer B, based on the total weight of polymers A and B in the polyblend, and wherein:Polymer A is a copolymer of 35 to 65% of methyl methacrylate and 35 to 65% of styrene grafted on butadienestyrene rubber, methyl methacrylate being partially replaceable by an acrylic ester, and either methyl methacrylate or grafting styrene being partially replaceable by acrylonitrile; andPolymer B is a copolymer of from 20 to 60% of a vinylaromatic hydrocarbon monomer, from 20 to 60% of a C.sub.1 -C.sub.4 -alkyl acrylate or a C.sub.1 -C.sub.4 -alkyl methacrylate ester, and from 12 to 30% of maleic anhydride or maleimide or a N-substituted maleimide or a mixture of such maleic acid derivatives.The polyblends have heat resistance, transparency and impact strength.Type: GrantFiled: November 27, 1989Date of Patent: October 1, 1991Assignee: Monsanto Europe S.A.Inventor: Daniel L. Dufour
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Patent number: 5049614Abstract: Blends based on vinyl-aromatic polymers having high tenacity and impact strength, comprising:a vinyl-aromatic copolymer containing from 2 to 25% by weight of an ethylenically unsaturated nitrile and a rubber amount not higher than 15% by weight; anda grafted polymer consisting of an elastomeric core having a transition temperature of the second order lower than 10.degree. C. containing, in the grafted form, chains of vinyl monomers.Type: GrantFiled: March 27, 1990Date of Patent: September 17, 1991Assignee: Montedipe S.p.A.Inventor: Gianfranco Biglione
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Patent number: 5004783Abstract: A polymer blend comprises a high nitrile copolymer and a compatible thermoplastic polymer or copolymer containing polar groups, formed from monomers selected from the group consisting of alkylacrylamides, aliphatic and cyclic methacrylates, unsaturated carboxylic acid anhydrides, vinyl pyrrolidones, heterocyclic ring compounds containing two hetero atoms, lactones and phosphorus-containing monomers that form highly crystalline polymers. Such blends can be used to form films and membranes having improved thermal, mechanical and optical properties.Type: GrantFiled: August 22, 1988Date of Patent: April 2, 1991Assignee: The Standard Oil CompanyInventors: Elena S. Percec, Doreen Y. Takigawa
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Patent number: 4985497Abstract: Terpolymers of various amounts of polymer repeat units of ethylene, acrylate ester, and carbon monoxide are intimately admixed with acrylonitrile/butadiene/styrene (ABS) resin to form a blend with a flex modulus of at least 1700 MPa. The resulting blend has enhanced impact strength properties over the resin alone. Such blends are useful as molding resins. The process for preparation of the blend involves admixing the terpolymer with the ABS resin.Type: GrantFiled: August 25, 1988Date of Patent: January 15, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Kathryn A. Kamins, Robert J. Statz
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Patent number: 4965315Abstract: A thermoplastic resin composition composed of a mixture comprising a graft polymer obtained by subjecting a monomer mixture of an aromatic vinyl monomer and a vinyl cyanide monomer to emulsion polymerization in the presence of a diene rubber latex, and a hard polymer obtained by copolymerizing a monomer mixture of an aromatic vinyl monomer and a vinyl cyanide monomer, in which the number average particle size Dn of diene rubber particles contained in the composition is at most 0.1 .mu.m, the ratio (Dw/Dn) of the weight average particle size Dw to the number average particle size Dn of the diene rubber particles is at least 5.0, the graft rate of said graft polymer is at least 60%, and the content of an emulsifier and a reaction product of an emulsifier is not higher than 2% by weight.Type: GrantFiled: April 23, 1985Date of Patent: October 23, 1990Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Tetsuro Maeda, Akihiro Okamoto
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Patent number: 4940747Abstract: Thermoplastic moulding materials, of vinyl chloride polymers, which contain a polymer, prepared in the presence of mercaptans, from styrene, .alpha.-methylstyrene, vinyltoluene, acrylonitrile, methyl methacrylate or mixtures thereof and which possess improved processing properties.Type: GrantFiled: November 17, 1986Date of Patent: July 10, 1990Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Christian Lindner, Karl-Heinz Ott, Hans-Eberhard Braese
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Patent number: 4918118Abstract: A process for improving properties of a synthetic resin powder by subjecting a latex of a graft-copolymer whose back bone is a rubber to coagulation, and adding a lubricant to the graft-copolymer in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of said graft-copolymer, and then removing water. The bulk specific gravity of a synthetic resin powder produced is large, the flowability and blocking resistance are remarkably improved in comparison with known methods and blocking during storage is prevented. Lines for transporting the powder do not become packed with the resin powder. It is possible to automatically weigh the resin powder, and the powder does not exhibit a tendency to increase in volume during mass transport.Type: GrantFiled: April 11, 1988Date of Patent: April 17, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Atsushi Kawakatsu, Ryuichi Takagi
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Patent number: 4904730Abstract: An impact resistant polymeric composition and a process for its production. The composition comprises a rigid polymeric matrix comprising an anionically polymerized copolymer of at least one isopropenyl aromatic monomer and at least one vinyl aromatic monomer, said matrix having dispersed therein an elastomeric phase comprising at least one moderately cross-linked ungrafted rubber and at least one moderately cross-linked lightly-grafted rubber, wherein the lightly-grafted rubber has a graft-to-rubber ratio of 0.9:1 or less. The elastomeric phase is melt agglomerated to provide aggregates having particle sizes in the range from 3,000 to 100,000.Type: GrantFiled: May 30, 1989Date of Patent: February 27, 1990Assignee: The Dow Chemical CompanyInventors: Eugene R. Moore, Thomas D. Traugott
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Patent number: 4902744Abstract: A polymer mixture of(a) 45 to 50 parts by weight of a graft product of a mixture of 25 to 40 parts by weight acrylonitrile and 75 to 60 parts by weight styrene, .alpha.-methylstyrene, alkylmethacrylate or mixtures thereof on a particulate, highly crosslinked diene rubber having a rubber content of 20 to 40% by weight,(b) 45 to 10 parts by weight of a graft product of a mixture of 20 to 35 parts by weight acrylonitrile and 80 to 65 parts by weight styrene or .alpha.-methylstyrene on a particulate, highly crosslinked diene rubber having a rubber content of 50 to 75% by weight, the graft yield being greater than 60% by weight,(c) 10 to 50 parts by weight of a particulate, partially crosslinked, rubber-like copolymer of a C.sub.2 -C.sub.8 alkylacrylate and/or butadiene containing up to 40% by weight (based on copolymer) acrylonitrile which has an average particle diameter (d.sub.50) of from 0.1 to 0.3 .mu.Type: GrantFiled: November 25, 1988Date of Patent: February 20, 1990Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Hans-Eberhard Braese, Karl-Erwin Piejko
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Patent number: 4902745Abstract: Soft polymer mixtures of(a) 10 to 50 parts by weight of a graft polymer obtained from a particulate, highly cross linked diene or alkyl acrylate rubber and graft polymerized alkyl methacylate, acrylonitrile, styrene, alkyl acrylate or mixtures thereof and(b) 90 to 50 parts by weight of a partly cross-linked, particulate, rubber-like copolymer of acrylonitrile and/or methyl methacrylate and C.sub.1 to C.sub.8 alkyl acrylate having a gel content of from 60 to 99% by weight and an average particle diameter (d.sub.50) of from 0.1 to 0.6 .mu.m,and a process for the preparation of the mixtures and their use for the production of moulded articles.Type: GrantFiled: December 12, 1988Date of Patent: February 20, 1990Assignee: Bayer AktiengesellschaftInventors: Karl-Erwin Piejko, Otto Billinger, Lothar Meier, Christian Lindner, Karl-Heinz Ott
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Patent number: 4900787Abstract: A thermoplastic resin composition affording a delustered shaped article which comprises (A) a rubber-modified copolymer with (B) an epoxy group-containing olefin polymer or an unsaturated carboxylic acid-modified olefin polymer (B').Type: GrantFiled: September 7, 1988Date of Patent: February 13, 1990Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Hajime Sakano, Akitoshi Ito, Motoichi Yano, Yasuhiro Honda, Takayoshi Fujiwara
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Patent number: 4898223Abstract: A rubber comprised of a sulfur cured blend of polyoctenamer rubber, alkyl methacrylate grafted cis 1,4-polyisoprene rubber and at least one additional sulfur curable rubber. The invention is further directed to a tire or industrial rubber product having at least one of its indicated components comprised of such sulfur cured rubber composition.Type: GrantFiled: January 30, 1989Date of Patent: February 6, 1990Assignee: The Goodyear Tire & Rubber CompanyInventors: Thomas J. Botzman, Samuel P. Landers
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Patent number: 4883834Abstract: A primer composition usable for steel sheet and plastic sheet in vehicle bodies consists essentially of a component A composed of a resin obtained by graft-polymerizing a styrene-butadiene-styrene block copolymer or its hydrogenated polymer with .alpha.,.beta.-unsaturated carboxylic acid or its anhydride, a component B of a crosslinking agent and a component C of an epoxy compound, and has particular weight ratios as solid content of component A to component B and components A+B to component C.Type: GrantFiled: July 13, 1987Date of Patent: November 28, 1989Assignee: Nippon Oil and Fats Company, LimitedInventors: Shosaku Yamamoto, Kazuo Kakinuma, Fumio Sodeyama, Junji Mayumi, Riichiro Maruta
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Patent number: 4882383Abstract: Thermoplastic compositions comprising rubber modified polyalkenyl aromatic resin and a modifying agent having a core-shell structure comprised of an interpenetrating, cross-linked (meth)acrylate core and a cross-linked styrenic resin shell have significantly improved impact strength, thermal resistance and surface appearance following molding into shaped articles.Type: GrantFiled: July 21, 1987Date of Patent: November 21, 1989Assignee: General Electric Co.Inventor: Sai-Pei Ting
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Patent number: 4871802Abstract: The invention relates to a process for the preparation of a thermoplastic consisting of a vinylaromatic compound, acrylonitril and a butadiene rubber, by means of a two-step polymerization reaction characterized in that 0.1-10 wt. % of the butadiene rubber based on the entire composition, is replaced by an acrylate rubber in the second step. The process results in a decreased concentration of residual monomers.Type: GrantFiled: February 9, 1988Date of Patent: October 3, 1989Assignee: Stamicarbon B.V.Inventors: Wilhelmus G. Duyzings, Lambert Van Lumig
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Patent number: 4859744Abstract: The invention relates to a process for the production of graft polymers of resin-forming monomers on a rubber in which a very high graft yield is obtained by the use of an initiator system of an organic hydroperoxie and ascorbic acid. The graft polymers obtained are suitable as thermoplastic molding compositions or as constituents thereof.Type: GrantFiled: March 7, 1988Date of Patent: August 22, 1989Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Karl-Heinz Ott
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Patent number: 4857591Abstract: Thermoplastic moulding compositions consisting ofI. 75 to 99.5% by weight of a polymer ofA. 0 to 95% by weight, 95% or less by weight; of a graft copolymer prepared by grafting polymerization ofA.1 5 to 95% by weight of a mixture ofA.1.1 50 to 95% by weight of styrene, .alpha.-methylstyrene, nuclear-substituted styrene, methyl methacrylate or mixtures thereof andA.1.2 50 to 5% by weight of (meth)acrylonitrile, methyl methacrylate, maleic anhydride, N-substituted maleimide or mixtures thereof onA.2 95 to 5% by weight of a rubber with a glass transition temperature Tg or <0.degree.C., andB. 100 to 5% by weight of a thermoplastic polymer ofB.1 95 to 50% by weight of styrene, .alpha.-methylstyrene, nuclear-substituted styrene or methyl methacrylate or mixtures thereof andB.2 5 to 50% by weight of (meth)acrylonitrile, methyl methacrylate, maleic anhydride, N-substituted maleimide or mixtures thereof andII. 25 to 0.5% by weight of a hydrogenated nitrile rubber.Type: GrantFiled: June 22, 1987Date of Patent: August 15, 1989Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Hartmuth Buding, Joachim Doring, Rudolf Casper, Karl-Heinz Ott
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Patent number: 4857592Abstract: A polyvinyl chloride resin composition comprises 3-30 wt. % of a graft copolymer and 97-70 wt. % of a polyvinyl chloride resin and has highly-balanced properties between impact resistance, transparency and stress-whitening resistance and excellent processing characteristics. The graft copolymer is obtained by graft-polymerizing, in the presence of a latex containing greater than 75 but not exceeding 85 parts by weight of a rubbery butadiene-styrene copolymer formed of 65-85 wt. % of butadiene, 15-35 wt. % of styrene and 0-3 wt. % of crosslinkable monomer, (i) 5-24 parts by weight of a first monomer mixture as a first-stage component, said first monomer mixture being composed of 70-97 wt. % of methyl methacrylate and 30-3 wt. % of an alkyl acrylate whose alkyl group has 1-8 carbon atoms; and then (ii) 3-21 parts by weight of a second monomer mixture as a second-stage component, said second monomer mixture being composed of 97-100 wt % of styrene and 0-3 wt. % of crosslinkable monomer.Type: GrantFiled: February 11, 1988Date of Patent: August 15, 1989Assignee: Kureha Kagaku Kogyo K. K.Inventors: Mitsuru Hoshino, Haruhiko Yusa, Katsumi Suzuki
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Patent number: 4835215Abstract: A thermoplastic resin composition affording a delustered shaped article which comprises (A) a rubber-modified copolymer with (B) an epoxy group-containing olefin polymer or an unsaturated carboxylic acid-modified olefin polymer (B').Type: GrantFiled: December 31, 1986Date of Patent: May 30, 1989Assignee: Sugitomo Naugatuck Co., Ltd.Inventors: Hajime Sakano, Akitoshi Ito, Motoichi Yano
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Patent number: 4812516Abstract: A polymer composition obtained by mixing, in an emulsion state,(A) from 20 to 90% by weight (as solid content of polymer) of an emulsion of polymer component (A) which is a polymer of a vinyl monomer and has a glass transition temperature of higher than 20.degree. C., a gel content of not higher than 10% and a solubility parameter of from 8.0 to 11.0 (cal/cc) .sup.1/2 and which has a weight average molecular weight, based on polystyrene, of at least 1.5.times.10.sup.5, and(B) from 10 to 80% by weight (as solid content of polymer) of an emulsion of polymer component (B) which is a homopolymer of an acrylate monomer, a copolymer of acrylate monomers or a copolymer of an acrylate monomer with other copolymerizable monomer and has a glass transition temperature of not higher than 20.degree. C., a gel content of not higher than 70% and a solubility parameter of from 8.4 to 9.8 (cal/cc).sup.1/2,and separating the polymer from the emulsion mixture.Type: GrantFiled: June 1, 1988Date of Patent: March 14, 1989Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventor: Tetsuro Maeda
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Patent number: 4800216Abstract: The invention relates to ABS molding compositions having a markedly reduced residual butadiene content, even at high processing temperatures.Type: GrantFiled: November 2, 1987Date of Patent: January 24, 1989Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Alfred Pischtschan
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Patent number: 4788250Abstract: Disclosed is a thermoplastic resin composition comprising a graft polymer resin (I) obtained by polymerizing one or more monomers (b) selected from the group consisting of aromatic vinyl compounds and ethylenically unsaturated compounds, in the presence of a latex of an ethylene-propylene-non-conjugated diene terpolymer rubber (a) having a specific gel content and a specific particle diameter, so that the graft polymer resin contains a specific proportion of the rubber (a); and a rigid thermoplastic resin (II). This resin composition has excellent weather resistance and impact resistance, and yields molded articles having a good surface gloss.Type: GrantFiled: October 8, 1987Date of Patent: November 29, 1988Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Haruyoshi Kitahara, Yasuaki Ii, Yutaka Toyooka
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Patent number: 4788253Abstract: The invention relates to a thermoplastic molding material of an elastomeric polymer A, a shell B grafted to the polymer A, and a copolymer C as rigid matrix. The amount of polymer A is 1 to 25 percent by weight based on the weight of A+B+C. It has a glass transition temperature, Tg, of less than 0.degree. C. and an average particle size of 200 to 750 nanometers (d.sub.50 value of the integral mass distribution) and is composed of: 50 to 99.9 percent by weight of at least one alkylacrylate with 1 to 8 carbon atoms in the alkyl radical and 0.1 to 5 percent by weight of a polyfunctional monomer which has a crosslinking action. Grafting shell B represents 5 to 40 percent by weight based on A+B+C and is composed of at least one of the monomers of the group of(b.sub.1) vinylaromatic monomers, and(b.sub.2) the ethylenically unsaturated monomers.Grafting shell B is prepared in two stages with 30 to 70 percent by weight of the monomers b.sub.Type: GrantFiled: April 17, 1987Date of Patent: November 29, 1988Assignee: BASF AktiengesellschaftInventors: Juergen Hambrecht, Burghard Schmitt, Johann Swoboda, Georg Wassmuth, Claus Bernhard, Rudolf Stephan
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Patent number: 4778850Abstract: A: Thermoplastic moulding materials made from a vinyl chloride homopolymer or copolymer containing at least 50% by weight of vinyl choloride units,B: a graft polymer, prepared by graft polymerization ofB1: 50 to 85 parts by weight of a mixture of at least two of the monomers styrene, acrylonitrile, methyl methacrylate and .alpha.-methyl styrene onB2: 50 to 15 parts by weight of an at least partially crosslinked butadiene or acrylate rubber having average particle diameters of 0.08 to 1 .mu.Type: GrantFiled: June 22, 1987Date of Patent: October 18, 1988Assignee: Bayer AktiengessellschaftInventors: Christian Lindner, Hartmuth Buding, Hans-Eberhard Braese, Rudolf Casper, Karl-Heinz Ott
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Patent number: 4767833Abstract: A thermoplastic resin composition obtained by graft-polymerizing 95 to 50 parts by weight of a monomer mixture comprising a vinyl aromatic compound monomer and an acrylic compound monomer and optionally a vinyl cyanide compound monomer in the presence of 5 to 50 parts by weight of a rubbery substance consisting of styrene-butadiene copolymers, characterized in that the rubbery substance comprises (A) 40 to 80% by weight of a styrene-butadiene copolymer having a number-average particle diameter of at least 0.05 .mu.m and less than 0.2 .mu.m, a gel content of 30 to 100% by weight and a bound styrene content of 10 to 40% by weight and (B) 60 to 20% by weight of a styrene-butadiene copolymer having a number-average particle diameter of 0.2 to 3 .mu.m, a gel content of 10 to 80% by weight and a bound styrene content of 10 to 40% by weight and the total content of the components (A) and (B) in the rubbery substance is at least 80% by weight.Type: GrantFiled: September 26, 1986Date of Patent: August 30, 1988Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Tsunemasa Yumoto, Yoshio Nakanishi, Kazuki Iwai, Tadahiko Itoh
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Patent number: 4760108Abstract: A microcapsule-containing water-base coating formulation comprises as essential components (a) microcapsules making use of a synthetic resin as a wall-forming material and (b) a reaction product obtained by polymerizing at least one water-soluble vinyl monomer (B) in the presence of a high polymer latex (A) having a glass transition point of 60.degree. C. or lower. The latex (A) and vinyl monomer (B) are used at a solid weight ratio of 3:97-90:10. The water-base coating formulation can provide a microcapsule-coated layer having significantly-improved pressure resistance and frictional stability without need for a stilt. The water-base coating formulation can be applied at a high speed, thereby making a significant improvement to the productivity of carbonless copying and/or recording paper.Type: GrantFiled: December 20, 1985Date of Patent: July 26, 1988Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Makoto Asano, Kiyoharu Hasegawa, Masatoshi Takagi, Takamine Yamaguchi
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Patent number: 4740557Abstract: Disclosed is an impact-resistant thermoplastic resin composition which comprises a graft copolymer [II]. The graft copolymer [II] is prepared by enlarging the particles in a latex of a rubbery copolymer [I] formed by emulsion polymerization of a monomer mixture of 51-91 wt. % of an alkyl acrylate and 49-1 wt. % of 1,3-butadiene to adjust the particle size to 0.12-0.4 .mu.m by addition of (A) an acid group-containing copolymer obtained by performing emulsion polymerization of a mixture of 3-40 wt. % of acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, cinnamic acid, sorbic acid and/or p-styrene-sulfonic acid, and 97-35 wt. % of an alkyl acrylate, and (B) a salt of an oxyacid having a central element of Groups III to VI of the periodic table, the element belonging to the second or third period, with an alkali or alkaline earth metal or Zn, Ni or Al; and then, polymerizing in the presence of the enlarged rubber copolymer a monomer or monomer mixture comprising 50-100 wt.Type: GrantFiled: April 25, 1985Date of Patent: April 26, 1988Assignee: Mitsubishi Rayon Company Ltd.Inventors: Yoshio Nakai, Masamitsu Tateyama
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Patent number: 4739001Abstract: A rubber-modified styrene resin composition is disclosed, comprising (A) a rubber-modified styrene resin having dispersed therein from 1 to 15% by weight of a rubbery polymer having an average particle size of from 0.1 to 2.5 .mu.m, (B) an organopolysiloxane in an amount of from 0.01 to 0.2% by weight on silicon conversion based on the rubber-modified styrene resin, and (C) an ethylene-unsaturated carboxylic acid ester copolymer in an amount of from 0.05 to 10% by weight based on the rubber-modified styrene resin. The composition exhibits markedly improved areal impact strength while retaining other physical properties and is, therefore, useful for exterior parts.Type: GrantFiled: December 18, 1986Date of Patent: April 19, 1988Assignee: Sumitomo Chemical Co., Ltd.Inventors: Yasushi Okamoto, Yoshinori Kanno