Patents Examined by J. Ziegler
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Patent number: 4451611Abstract: An improved process for producing a polymer blend which exhibits an anisotropic melt phase and is capable of forming shaped articles having satisfactory mechanical properties (e.g. tensile strength, flexural strength, and Izod impact strength) is provided. The process comprises the steps of (a) post-polymerizing a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend and (b) subsequently intimately mixing together approximately 85 to 95 percent by weight of the wholly aromatic polyester and approximately 5 to 15 percent by weight of a polyalkylene terephthalate. Accordingly, the wholly aromatic polyester which is capable of forming an anisotropic melt phase serves as the continuous phase in the resulting blend.Type: GrantFiled: December 15, 1981Date of Patent: May 29, 1984Assignee: Celanese CorporationInventors: David E. Cincotta, Frank M. Berardinelli
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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: 4450256Abstract: A thermoplastic resin which is outstanding in impact resistance and heat distortion resistance and is discolored only little by heat is produced by polymerizing, in the presence of diene type synthetic rubber, a monomer mixture of acrylonitrile and styrene, adding thereto a monomer mixture containing more than 80 wt % of .alpha.-methylstyrene, and then adding thereto little by little a monomer mixture containing more than 70 wt % of acrylonitrile, whereby 95-70 parts by weight of monomer is polymerized in the presence of 5-30 parts by weight of the diene type synthetic rubber.Type: GrantFiled: January 12, 1983Date of Patent: May 22, 1984Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Sigemi Matsumoto, Fumiya Nagoshi
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Patent number: 4448929Abstract: A protective colloid for use in an interfacial polymerization process comprising a graft copolymer of polyvinyl alcohol and methyl vinyl ether/maleic acid.Type: GrantFiled: June 1, 1982Date of Patent: May 15, 1984Assignee: Stauffer Chemical CompanyInventors: Marius Rodson, Herbert B. Scher
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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: 4448931Abstract: A resin composition comprising a polyphenylene ether resin and a rubber-modified polystyrene resin, wherein at least 80% of the rubber particles based on the total number of rubber particles in the elastomeric phase of the rubber-modified polystyrene resin have a particle diameter in the range of 0.5 to 4 microns, and the elastomeric phase has a particle size distribution index, SDI, defined by the equation ##EQU1## wherein x is the diameter in microns of the particles, and n is the number of particles having a particle diameter of x microns, of not more than 1.9.Type: GrantFiled: April 16, 1982Date of Patent: May 15, 1984Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Akitoshi Sugio, Masanobu Masu, Akikazu Amagai
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Patent number: 4447578Abstract: A thermoplastic resin composition having high heat resistance coupled with high impact resistance is obtained by combining a predominant amount of (A) a copolymer of methyl methacrylate, acrylonitrile, 2-isopropenylnaphthalene and .alpha.-methylstyrene, and (B) a graft copolymer of methyl methacrylate, optionally with styrene and acrylonitrile, on a butadiene rubber.Type: GrantFiled: December 20, 1982Date of Patent: May 8, 1984Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Takayuki Katto, Yasumasa Komatsu, Zenya Shiiki
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Patent number: 4447571Abstract: A process for providing water based anionic polyurethanes having improved thermal oxidation color stability. Water dispersed amine salts of anionic prepolymers prepared from the reaction of polyhydroxy compounds and dihydroxy carboxylic acids with diisocyanates are chain-extended with hydrazine or hydrazide and thereafter optionally with a diamine, when cured at temperatures in excess of 150.degree. C., form polyurethane products having substantially no discoloration and good mechanical properties. Alternately, the hydrazide may be employed as an additive rather than as a chain-extender. The process is particularly useful when employing cross-linking agents which react only at high temperatures.Type: GrantFiled: October 15, 1981Date of Patent: May 8, 1984Assignee: Witco Chemical CorporationInventors: Shmuel Dabi, Peter Loewrigkeit
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Patent number: 4446278Abstract: A new class of polymer blends comprising (I) block copolymers of polyphenylene oxides and sterically-hindered aromatic polycarbonates and (II) vinyl aromatic resins.Type: GrantFiled: May 12, 1983Date of Patent: May 1, 1984Assignee: General Electric CompanyInventor: George R. Loucks
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Patent number: 4446277Abstract: A thermoplastic molding material based on a styrene polymer which has been made impact-resistant, and on a polyphenylene ether, wherein the impact-resistant styrene polymer comprises a soft component which has a mean particle diameter of greater than 0.3 .mu.m and contains an acrylic ester polymer as the elastomeric component. The novel molding materials possess improved flow and give moldings having improved aging resistance.Type: GrantFiled: May 23, 1983Date of Patent: May 1, 1984Assignee: BASF AktiengesellschaftInventors: Franz Brandstetter, Adolf Echte, Franz Haaf, Juergen Hambrecht, Herbert Naarmann
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Patent number: 4444950Abstract: A thermoplastic resin composition improved in weld strength which comprises (A) a polycarbonate resin and (B) a rubber modified copolymer with (C) an epoxy group-containing olefin copolymer.Type: GrantFiled: March 1, 1983Date of Patent: April 24, 1984Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Hajime Sakano, Akitoshi Ito, Motoichi Yano, Yasuhiro Honda
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Patent number: 4444951Abstract: Molding compositions are prepared from blends of (A) thermoplastic polynorbornene nitrile polymers; (B) styrene/maleic anhydride polymers; (C) at least one of the polymers selected from the group consisting of ABS polymers, MBS polymers, and styrene/acrylonitrile polymers. Component B, the styrene/maleic anhydride polymer may optionally contain a termonomer such as methylmethacrylate or acrylonitrile and a rubber component.Type: GrantFiled: April 11, 1983Date of Patent: April 24, 1984Assignee: Monsanto CompanyInventor: Robert A. Mendelson
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Patent number: 4443503Abstract: Disclosed is an anti-corrosive coating composition comprising (a) 100 parts by weight of an unsaturated polyester resin, (b) 10 to 100 parts by weight of a glass flake having an average thickness of 0.5 to 5 microns and an average particle size of 100 to 400 microns, or 10 to 70 parts by weight of said glass flake and 10 to 150 parts of scaly metal pigment, (c) 0.1 to 1.0 part by weight of a ketone peroxide and (d) 0.5 to 2.0 parts by weight of a hydroperoxide and/or a peroxy ester. Also disclosed is a process for forming anti-corrosive coatings, which comprises spray-coating the above anti-corrosive coating composition to a thickness of 300 to 1500 microns by using a spray gun having a spray tip diameter of 0.5 to 3 mm.Type: GrantFiled: September 2, 1982Date of Patent: April 17, 1984Assignee: Dai Nippon Toryo Co., Ltd.Inventors: Minoru Hoshino, Tosio Shinohara, Hiroyuki Tanabe, Tooru Taki, Shunsuke Nakayama
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Patent number: 4443583Abstract: A process for the production of polychloroprene mixtures of sol and gel polymers in a ratio, by weight, of rom 1:4 to 9:1, the gel polymer being produced by radical emulsion polymerization from chloroprene in the presence of 4 to 10% by weight of water soluble disproportionated abietic acid, and the sol polymer being produced by radical emulsion polymerization of chloroprene in the presence of not more than 3.5% by weight of a water soluble disproportionated abietic acid with the polychloroprene mixture containing at most 3.8% of said acid.Type: GrantFiled: June 10, 1982Date of Patent: April 17, 1984Assignee: Bayer AktiengesellschaftInventors: Rudiger Musch, Gottfried Pampus, Rudolf Casper, Peter Muller, Wilhelm Gobel
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Patent number: 4443582Abstract: This invention relates to a polychloroprene elastomer distinguished by good processing properties and high tensile strength in the form of a polychloroprene mixture containing a sol polymer and a gel polymer in a ratio, by weight, of from 1:4 to 9:1, characterized in that both polymers have been produced in the presence of from 2.5 to 4.0 parts, by weight, of the potassium salt of disproportionated abietic acid (expressed as acid), from 0.3 to 1.0 part, by weight, of a condensation product of naphthalene sulphonic acid and formaldehyde and from 0.1 to 1.5 parts, by weight, of potassium hydroxide, based in each case on 100 parts, by weight, of monomer, and in that the gel polymer is a copolymer of chloroprene and from 1.5 to 2.5 mole percent, based on total monomer, of a diester corresponding to the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 represent hydrogen, chlorine or C.sub.1 -C.sub.4 alkyl; andX represents C.sub.2 -C.sub.10 alkylene.Type: GrantFiled: May 19, 1982Date of Patent: April 17, 1984Assignee: Bayer AktiengesellschaftInventors: Rudiger Musch, Gottfried Pampus, Peter Muller, Ulrich Eisele, Wolfgang Konter, Wilhelm Gobel
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Patent number: 4442262Abstract: Disclosed herein is a composition of a polyester-block copolymer, comprising 5 to 80% by weight of at least one kind of graft-copolymer obtained by graft-copolymerizing 50 to 25 parts by weight of a monomeric mixture predominantly consisting essentially of styrene and methyl methacrylate and containing 0.01 to 3.0% by weight of a cross-linking agent with 50 to 75 parts by weight of a cross-linked elastomeric trunk polymer containing not less than 50% by weight of rubber like segment selected from the group consisting of butadiene unit and C.sub.4 to C.sub.10 -alkyl acrylate units, and 0.01 to 3.0% by weight of a cross-linking agent, and 95 to 20% by weight of a polyester-block copolymer, the composition giving shaped articles of favorable superficial appearance even when processed by shape-forming under conditions of mixing and kneading of a relatively low degree.Type: GrantFiled: November 17, 1981Date of Patent: April 10, 1984Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Toyo Boseki Kabushiki KaishaInventors: Haruhiko Yusa, Mitsuru Hoshino, Akira Kurosaki, Hironobu Furusawa, Chikara Sugitawa
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Patent number: 4442265Abstract: A polymeric blend containing (1) copolymer of lactone with conjugated diene or monovinylarene or both conjugated diene and monovinylarene, (2) acrylic ester polymer and (3) coumarone-indene resin.Type: GrantFiled: September 29, 1982Date of Patent: April 10, 1984Assignee: Phillips Petroleum CompanyInventor: John R. Haws
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Patent number: 4440912Abstract: Novel copolymers are prepared by the interaction of low or high molecular weight polyarylates, such as bisphenol A-isophthalate-terephthalate polyarylates, or bisphenol A-isophthalate-terephthalate-carbonate polyarylates and a high molecular weight diprimary dialcohol polyester polymer, such as polyethylene terephthalate polymer. The resulting copolymers are transparent and tough. They maintain their dimensional stability over a wide range of temperature from 75.degree.-175.degree. C., are soluble in chlorinated solvents, and have one glass transition point.Type: GrantFiled: April 23, 1982Date of Patent: April 3, 1984Assignee: General Electric CompanyInventors: Daniel W. Fox, Bruce A. Kaduk, John B. Starr, Jr.
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Patent number: 4440906Abstract: The use of tricyclodecenyl alcohol in place of other crosslinking agents for crosslinking the soft component of impact-resistant polystyrene based on a polystyrene-grafted poly(alkyl acrylate) improves the flow of mixtures of the said polystyrene with polyphenylene ethers.Type: GrantFiled: January 6, 1982Date of Patent: April 3, 1984Assignee: BASF AktiengesellschaftInventors: Franz Brandstetter, Juergen Hambrecht, Adolf Echte
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Patent number: 4440905Abstract: Improved impact modifier composition comprising elastomeric impact modifier polymer and dunkelsperser in a weight ratio of about 99.5/0.5 to 96/4 which is subject to substantially reduced gel formation in rigid thermoplastic matrix polymer formulations. Also disclosed are such formulations, as well as processes for preparing the improved impact modifier compositions.Type: GrantFiled: August 13, 1981Date of Patent: April 3, 1984Assignee: Rohm and Haas CompanyInventor: David L. Dunkelberger