Cyclic Anhydride Patents (Class 525/285)
  • Patent number: 4748210
    Abstract: Vinyl chloride-grafted ethylene copolymer superior in adhesiveness both to metals, glasses or polar high molecular materials such as polyamides and to non-rigid vinyl chloride resins is provided in which backbone polymer is copolymer of ethylene, ester of monohydric alcohol of 1-8 carbon atoms with acrylic acid or methacrylic acid and maleic anhydride and pendant or grafting polymer is vinyl chloride polymer. This copolymer is produced by graft-polymerization of vinyl chloride onto the ethylene-acrylic or methacrylic ester-maleic anhydride copolymer.
    Type: Grant
    Filed: June 19, 1987
    Date of Patent: May 31, 1988
    Assignee: Sumitomo Chemical Co., Ltd.
    Inventors: Masahisa Okawa, Tomoyuki Emura, Yoshitaka Owatari, Kentaro Mashita, Toshio Kawakita
  • Patent number: 4739016
    Abstract: Adduct of an unsaturated dicarboxylic acid or ester (e.g., maleic anhydride) and neutralized sulfonated EPDM is an ionic elastomer useful as an impact-modifier for nylon.
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: April 19, 1988
    Assignee: Uniroyal Chemical Company, Inc.
    Inventor: Nedie L. DeVera
  • Patent number: 4739017
    Abstract: A retro Diels Alder assisted polymer grafting process in which a Diels Alder adduct is mixed with a polyolefin or polyvinyl polymer substrate and thermally decomposed to form an ethylenically unsaturated monomer which grafts onto the polymer substrate. The monomer conforms generally to the formula R.sub.1 R.sub.2 C.dbd.CHR.sub.3 in which R.sub.1 is hydrogen, methyl or ethyl, R.sub.2 is hydrogen, methyl, ethyl or vinyl and R.sub.3 is a hydroxyl, carboxyl, cyano, formyl, acetyl or propanoyl. The Diels Alder adduct substantially decomposes at a temperature of about 120.degree.-300.degree. C., but does not substantially decompose below about 120.degree. C. The polymer substrate is preferably high-density polyethylene, low density polyethylene, linear low density polyethylene, ethylene-propylene rubber, polypropylene, polystyrene or styrene-butadiene block copolymers. The grafting is induced by, for example, heat, catalyst and/or high shear conditions.
    Type: Grant
    Filed: June 6, 1986
    Date of Patent: April 19, 1988
    Assignee: The Dow Chemical Company
    Inventors: Ricky L. Tabor, Paul L. Neill, Bradley L. Davis
  • Patent number: 4737548
    Abstract: Adhesive resins obtained by reacting 100 parts by weight of an epoxy group-containing olefin polymer with 0.01-10 parts by weight of at least one ethylenically unsaturated fatty acid or derivative thereof, are described. The adhesive resins or olefin polymer compositions comprising the adhesive resins are particularly useful in lamination with other types of resins. Such laminates are also described.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: April 12, 1988
    Assignee: Nippon Petrochemicals
    Inventors: Shinji Kojima, Hirokazu Suzuki, Yuichi Orikasa
  • Patent number: 4737303
    Abstract: A covalently bonded reaction product of:(a) a sulfomaleic anhydride adduct with an unsaturated hydrocarbon polymer; and(b) a polar molecule containing at least one primary or secondary amino group.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: April 12, 1988
    Assignee: Exxon Research and Engineering Company
    Inventors: Warren A. Thaler, Stanley J. Brois, Francis N. Ferrara
  • Patent number: 4732924
    Abstract: 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: Grant
    Filed: July 1, 1986
    Date of Patent: March 22, 1988
    Assignee: Idemitsu Petrochemical Company Limited
    Inventors: Eiichi Terada, Hiroshi Kurokawa, Shigemi Kawazoe
  • Patent number: 4727120
    Abstract: Adhesive composition consisting essentially of polypropylene modified by grafting with an acid anhydride to further reacted with a compound bearing at least two groups capable of reacting with the anhydride preferrably a polyol or a polyamine.
    Type: Grant
    Filed: October 29, 1985
    Date of Patent: February 23, 1988
    Assignee: Societe Atochem
    Inventor: Pierre Nogues
  • Patent number: 4722858
    Abstract: A fire-retardant sheet material, the manufacture thereof and a fire-retardant polymer composition are disclosed. The sheet is manufactured from a composition of polyethylene, 55 to 75% by weight of the composition of alumina trihydrate and/or magnesium hydroxide, and optionally zinc borate and/or calcium carbonate, at least 2% by weight of the composition being in the form of a graft copolymer with an ethylenically unsaturated carboxylic acid or anhydride. The composition has a melt index of 0.05 to 4.0 dg/min. In an embodiment, the graft copolymer has a shear viscosity at 200.degree. C. and a shear rate of 400 sec.sup.-1 that is not more than 50% of that of the polyethylene. The sheet material may be used for, in particular, ceiling tile. In embodiments of the composition, 60 to 90% by weight may be alumina trihydrate and/or magnesium hydroxide, and optionally zinc borate and/or calcium carbonate.
    Type: Grant
    Filed: June 26, 1986
    Date of Patent: February 2, 1988
    Assignee: Du Pont Canada Inc.
    Inventors: David A. Harbourne, Evelyn M. Lundhild
  • Patent number: 4719260
    Abstract: Disclosed is a hot-melt adhesive composition comprising from about 55 to about 95 weight % of an amorphous polymer containing at least 30% propylene and from about 45 to about 5 weight % of a graft copolymer of(a) a saturated, polycyclic hydrocarbon resin, and(b) maleic anhydride.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: January 12, 1988
    Assignee: Eastman Kodak Company
    Inventors: Richard K. Stuart, Jr., Bruce W. Foster
  • Patent number: 4719153
    Abstract: A laminated article which comprisesa layer (A) of a saponified ethylene--vinyl acetate copolymer resin having an ethylene content of 20-55% by mole and a degree of saponification of not less than 90% by mole; laminated witha layer (B) of a hydrophobic thermoplastic resin; through the medium ofa layer (C) of an adhesive resin; said adhesive resin containsa polymer (X) comprising ethylene component--vinyl acetate component--ethylenically unsaturated carboxylic acid component or anhydride thereof--styrene type vinyl compound component, anda copolymer (Y) comprising ethylene component--vinyl acetate component,in an amount satisfying specific formulae,and the process for production thereof,which has a remarkably excellent adhesion between layers, as well as excellent mechanical characteristics and gas barrier properties, and is adapted to a container for foods and packaging material.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: January 12, 1988
    Assignees: Kuraray Co., Ltd., Takeda Chemical Industries, Ltd.
    Inventors: Toshiyuki Akasawa, Takuji Okaya, Masamitsu Nakabayashi, Yuzo Furukawa
  • Patent number: 4704427
    Abstract: A method for improving the physical properties of a rubber having --C(CH.sub.3).dbd.C-- type unsaturated bonds, characterized by subjecting said rubber to two reactions consisting of a modification reaction by Lewis acid and a carboxylation reaction in any desired order.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: November 3, 1987
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Shizuo Kitahara, Fujito Nakakawaji
  • Patent number: 4698395
    Abstract: A process of purifying maleic anhydride graft polyolefin comprising the steps of adding an aqueous solution of alkali initial hydroxide to a solution of maleic anhydride graft polyolefin containing unreacted maleic anhydride which is dissolved in an organic solvent at a temperature from 80.degree. C. to 160.degree. C., thereby precipitating maleic anhydride graft polyolefin particles to make a W/O emulsion; stirring the W/O emulsion while maintaining the temperature at a same temperature as above for less than 2 hours, thereby selectively forming the alkali metal salt of unreacted maleic anhydride; adding the aqueous solution of alkali metal hydroxide to the W/O emulsion to convert the W/O emulsion into an O/W emulsion; separating the maleic anhydride draft polyolefin particles, and washing the maleic anhydride graft polyolefin particles with water.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: October 6, 1987
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Takayuki Inoue, Masafumi Hattori, Kazuhide Hayama, Riichiro Maruta
  • Patent number: 4692498
    Abstract: Rubber-modified thermoplastic resins are characterized by having a high content of olefinically unsaturated nitriles and good transparency. These thermoplastic resins generally comprise from about 43 to about 75 parts by weight of a monovinyl aromatic monomer, from about 20 to about 40 parts by weight of an olefinically unsaturated nitrile monomer and from about five to about 35 parts by weight of an unsaturated dicarboxylic acid anhydride monomer, providing 100 parts of a thermoplastic terpolymer, and from about two to about 30 parts by weight of rubber polymer per 100 parts of the thermoplastic terpolymer. Other resins characterized by having between about 30 to 45 parts by weight of unsaturated dicarboxylic acid anhydride exhibit good heat distortion temperatures.
    Type: Grant
    Filed: August 5, 1985
    Date of Patent: September 8, 1987
    Assignee: The Standard Oil Company
    Inventors: Christopher L. Bodolus, David A. Woodhead
  • Patent number: 4681918
    Abstract: "Living" polymers and their preparation from acrylic-type or maleimide monomers and organosilicon, -tin or -germanium initiators.
    Type: Grant
    Filed: November 21, 1981
    Date of Patent: July 21, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Owen W. Webster
  • Patent number: 4670504
    Abstract: There is provided a tackifier composition especially suited for use with natural rubber latex and formed from an olefin resin, preferably a polymerized terpene hydrocarbon resin condensed with an unsaturated carboxylic acid or anhydride, optionally partially esterified with a C.sub.1 -C.sub.30 alcohol or phenol, and neutralized with a base, preferably a volatile base such as an amine, and then dispersed in an aqueous medium. The tackifier when added to a latex forms compositions useful particularly as pressure sensitive adhesives.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: June 2, 1987
    Assignee: Sylvachem Corporation
    Inventors: Carlos G. Cardenas, James M. Evans, Charles J. Stark, William J. Ehmann
  • Patent number: 4670173
    Abstract: Oil-soluble compositions, useful as dispersant viscosity modifiers, are formed by the reaction product of an acylating product (D) a (F) polyamine, and a (G) mono-functional acid. The compositions can be prepared in solvent such as a hydrocarbon oil or in the absence of a solvent.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: June 2, 1987
    Assignee: The Lubrizol Corporation
    Inventors: Katsumi Hayashi, T. Robert Hopkins, Curtis R. Scharf
  • Patent number: 4670508
    Abstract: A thermoplastic resin composition comprising a melt mixed product of (A) 70% to 98% by weight of at least one thermoplastic resin selected from the group consisting of polyamides, polyacetals, polyesters, and polycarbonates and (B) 30% to 2% by weight of ultra-high molecular weight polyolefin powder having an intrinsic viscosity [.eta.] of 10 dl/g or more, measured in decalin at 135.degree. C., and having an average particle size of 80 .mu.m or less and having a particle size distribution such that substantially all of the powder particles pass through a sieve having a sieve number of 100 and at least 20% by weight of the total powder particles pass through a sieve having a sieve number of 350.This thermoplastic resin composition has excellent abrasion resistance, excellent impact resistance, and a high critical PV value.
    Type: Grant
    Filed: January 2, 1985
    Date of Patent: June 2, 1987
    Assignee: Mitsui Petrochemical Industries Ltd.
    Inventors: Akio Ohdaira, Michiharu Suga, Akifumi Kato, Toshio Kobayashi, Akira Yokoyama
  • Patent number: 4670515
    Abstract: The peroxide catalyzed reaction of maleic anhydride and a saturated ethylene-propylene rubber of low molecular weight and the hydrolysis thereof produces a reversibly crosslinked product of apparent higher molecular weight by measure of Mooney viscosity but apparent unchanged molecular weight by reduced solution viscosity (RSV). The graft product of a low molecular weight semi-solid substrate can be recovered conveniently as a non-cold flowing solid which has utility as a low molecular weight oil VI improver and as an impact modifier for polar thermoplastic resins.
    Type: Grant
    Filed: August 1, 1985
    Date of Patent: June 2, 1987
    Assignee: Copolymer Rubber & Chemical Corp.
    Inventor: Errol J. Olivier
  • Patent number: 4661549
    Abstract: 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 continued 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: Grant
    Filed: October 12, 1983
    Date of Patent: April 28, 1987
    Assignee: Occidental Chemical Corporation
    Inventor: Leigh E. Walker
  • Patent number: 4661554
    Abstract: Polynetwork EPDM rubber is EPDM rubber containing both ionomeric and covalent cross-links, and can be formed by treating EPDM rubber with maleic acid or anhydride or fumaric acid to attach succinic groups to the rubber, forming an ionomer thereof with a polyvalent metal oxide, hydroxide or salt, and then covalently cross-linking the rubber, for example, by sulfur vulcanization. Compositions are shown containing the polynetwork rubber in combination with oil and black, optionally in blends with high-diene hydrocarbon rubber, such as natural rubber.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: April 28, 1987
    Assignee: Monsanto Company
    Inventors: Aubert Y. Coran, Cynthia K. Endter
  • Patent number: 4657946
    Abstract: Cationically charged water soluble vinyl addition polymers and condensation polymers provide improved emulsification of alkenyl succinic anhydride sizing agents. Sized paper products prepared from alkenyl succinic anhydride emulsions made with the polymers have superior ink holdout.
    Type: Grant
    Filed: July 16, 1985
    Date of Patent: April 14, 1987
    Assignee: Nalco Chemical Company
    Inventors: Dominic S. Rende, Michael D. Breslin
  • Patent number: 4652511
    Abstract: A process for producing a resin composition which comprises suspension-polymerizing at least one vinyl monomer in an aqueous medium in the presence of a dispersing agent, said suspension polymerization being carried out using a nonionic dispersant as said dispersing agent in the presence of a high-molecular-weight vinyl polymer having a weight average molecular weight of at least 500,000 obtained by emulsion polymerization.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: March 24, 1987
    Assignee: Fujikura Kasei Co., Ltd.
    Inventors: Hikoji Ueda, Akira Otsu, Kenji Sano, Katuyuki Takano
  • Patent number: 4639495
    Abstract: An extruder process for grafting ethylenically unsaturated monomers onto polyolefin polymers through the use of peroxide initiators without evidencing degradation of the base polymer whereby the components are concurrently melted and homogeneously mixed in an intensive mixing zone of an extruder, passed into a reduced pressure zone to remove excess monomer and passed through the remainder of the extruder process.
    Type: Grant
    Filed: April 14, 1983
    Date of Patent: January 27, 1987
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Marion G. Waggoner
  • Patent number: 4623684
    Abstract: A composition comprising:(A) a first component selected from the group consisting of:(i) an oil-soluble ethylene backbone polymer having a number average molecular weight in the range of about 500 to about 50,000;(ii) a hydrocarbyl-substituted phenol of the formula(R.sup.*).sub.a --Ar--(OH).sub.b Iwherein R.sup.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: November 18, 1986
    Assignee: The Lubrizol Corporation
    Inventors: Casper J. Dorer, Jr., Katsumi Hayashi
  • Patent number: 4619972
    Abstract: Modified polymer compositions comprising elastomers blended with not more than 50 parts by weight of a crystalline polyolefin are prepared by reaction of the polymers with an unsaturated carboxylic acid or its acid anhydride. The modified composition optionally containing a filler, is particularly suitable for laminating to metals and other polymers; laminates show superior hot water resistance, salt water resistance and thermal shock resistance.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: October 28, 1986
    Assignee: Toa Nenryo Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Inoue, Makoto Miyazaki, Masaaki Isoi, Makoto Yoda
  • Patent number: 4616059
    Abstract: A graft-modified ultrahigh-molecular-weight polyethylene obtained by grafting (A) an ultrahigh-molecular-weight polyethylene having an inherent viscosity [.eta.], determined at 135.degree. C. in decalin, of at least 5 dl/g with (C) an unsaturated carboxylic acid graft-copolymerizable therewith or its graft-copolymerizable derivative, under melt-kneading condition in the presence of (B) an aliphatic compound having a melting point, determined by the DSC method, of at least 10.degree. C. and a boiling point of at least 130.degree. C., an amount of the component (C) grafted in said graft-modified ultrahigh-molecular-weight polyethylene being 0.01 to 10% by weight, and said graft-modified ultrahigh-molecular-weight polyethylene being substantially free of an insoluble gel product and having a tensile strength of at least 1.0 GPa; and a process for producing the same.
    Type: Grant
    Filed: August 28, 1985
    Date of Patent: October 7, 1986
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Masanori Motooka, Hitoshi Mantoku
  • Patent number: 4613342
    Abstract: A composition comprising:(A) a first component selected from the group consisting of:(i) an oil-soluble ethylene backbone polymer having a number average molecular weight in the range of about 500 to about 50,000;(ii) a hydrocarbyl-substituted phenol of the formula(R*).sub.a -Ar-(OH).sub.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: September 23, 1986
    Assignee: The Lubrizol Corporation
    Inventors: Casper J. Dorer, Jr., Katsumi Hayashi
  • Patent number: 4611028
    Abstract: Copolymers adapted for use as stabilizers in dispersions and stable dispersions, including crosslinked dispersions containing microgel particles, prepared therefrom. Stabilizer bears pendent ethylenic unsaturation capable of reacting with monomers employed in random copolymerization used to make the dispersion polymer. Stabilizer comprises a random copolymer segment of ethylenically unsaturated monomers, some of which are characterized in that homopolymers thereof would be substantially insoluble in the organic liquid used to form the stable dispersion and some of which are characterized in that homopolymers thereof would be substantially soluble in the organic liquid used to form the stable dispersion.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: September 9, 1986
    Assignee: Ford Motor Company
    Inventors: Stephen C. Peng, John D. Nordstrom
  • Patent number: 4608411
    Abstract: The present invention provides grafted ethylene copolymers usable more especially as additives for inhibiting the depositions in crude oils.Said copolymer being formed of ethylene and at least one monomer with ethylenic unsaturation, chosen from vinyl esters of C.sub.2 to C.sub.18 monocarboxylic acids, the alkyl esters in the C.sub.1 to C.sub.12 range of unsaturated monocarboxylic acids from the C.sub.3 to C.sub.12 range and the .alpha., .beta.-unsaturated dicarboxylic compounds, on which are fixed the grafts of a homo or copolymer of an .alpha., .beta.-unsaturated monocarboxylic acid ester with at least one alkanol of a chain length equal to or greater than C.sub.12 and at least 20% of which is of a chain length equal to or greater than C.sub.22. Such copolymers may be used more especially as additives for inhibiting the deposition of paraffins and for improving the flow properties of the crude oils.
    Type: Grant
    Filed: October 23, 1985
    Date of Patent: August 26, 1986
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Gilles Meunier, Rene Brouard, Bernard Damin, Denis Lopez
  • Patent number: 4602056
    Abstract: The invention relates to the use of grafted ethylene-vinylacetate copolymers (EVA-copolymers) for the production of hotmelt adhesives.
    Type: Grant
    Filed: May 10, 1985
    Date of Patent: July 22, 1986
    Assignee: Bayer Aktiengesellschaft
    Inventors: Helmut Waniczek, Gerhard Hohmann, Herbert Bartl, Ludwig Mott
  • Patent number: 4599385
    Abstract: Graft copolymers are disclosed wherein maleic acid or maleic anhydride is grafted to a poly(propylene--butene) backbone. The grafts are useful materials for adhering polypropylene to other materials.
    Type: Grant
    Filed: October 10, 1984
    Date of Patent: July 8, 1986
    Assignee: Hercules Incorporated
    Inventors: Anthony B. Clayton, Brian D. Kramer
  • Patent number: 4598126
    Abstract: A heat resistant resin composition comprising from 10 to 90% by weight of a copolymer A and from 90 to 10% by weight of a copolymer B, in which the copolymer A is composed of an N-aromatic maleimide monomer residue, a maleimide monomer residue, a vinyl aromatic monomer residue and, optionally other vinyl monomer residue, the total content of the N-aromatic maleimide monomer residue and the maleimide monomer residue being from 10 to 45%, the content of the N-aromatic maleimide monomer residue being greater than the content of the maleimide monomer residue, the content of the vinyl aromatic monomer residue being from 90 to 55% and the content of said other vinyl monomer residue being from 0 to 20%, and the copolymer B is composed of a vinyl cyanide monomer residue, a vinyl aromatic monomer residue and, optionally other vinyl monomer residue, the content of the vinyl cyanide monomer residue being from 20 to 55%, the content of the vinyl aromatic monomer residue being from 80 to 45% and the content of said other
    Type: Grant
    Filed: April 5, 1985
    Date of Patent: July 1, 1986
    Assignee: Mitsubishi Monsanto Chemical Co.
    Inventors: Sadao Ikuma, Yuji Aoki, Noboru Watanabe
  • Patent number: 4591619
    Abstract: A thermoplastic resin composition is provided which comprises 10 to 90 wt % of an iminated copolymer prepared by reacting ammonia and/or a primary amine with a graft copolymerization product obtained by graft-copolymerizing a rubber-like polymer with a monomer mixture containing an aromatic vinyl monomer and an unsaturated dicarboxylic acid anhydride and 10 to 90 wt % of a graft-copolymer obtained by graft-copolymerizing a rubber-like polymer with a monomer mixture containing an aromatic vinyl monomer and/or a polymer obtained by polymerizing an aromatic vinyl monomer.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: May 27, 1986
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tomoyuki Kitsunai, Kiyotaka Saito, Shozo Hori
  • Patent number: 4587304
    Abstract: The present invention relates to novel polymers which are sulfomaleic anhydride adducts of an unsaturated hydrocarbon, wherein the novel polymers are produced by contacting sulfomaleic anhydride or derivatives with an unsaturated hydrocarbon to form the novel polymer, which has a M.sub.n of about 900 to about 10.sup.7.
    Type: Grant
    Filed: September 20, 1985
    Date of Patent: May 6, 1986
    Assignee: Exxon Research and Engineering Co.
    Inventors: Warren A. Thaler, Stanley J. Brois, Francis N. Ferrara
  • Patent number: 4585833
    Abstract: This invention is directed to curable molding compositions containing a mixture of a poly(acrylate), a polymerizable ethylenically unsaturated monomer which serves to crosslink the poly(acrylate) to a thermoset product, a thermoplastic polymer low profile additive, and a free radical initiator mixture containing at least one initiator with a 10-hour half-life temperature (t.sub.1/2) of greater than about 90.degree. C. and at least one initiator with a 10-hour half-life temperature (t.sub.1/2) of less than about 90.degree. C. The curable molding compositions exhibit improved shrink control during the curing reaction. This invention is also directed to fiber reinforced thermoset resin articles which exhibit generally improved surface appearance quality and can be produced by a rapid injection molding process from the curable molding compositions.
    Type: Grant
    Filed: May 26, 1983
    Date of Patent: April 29, 1986
    Assignee: Union Carbide Corporation
    Inventor: Linda A. Domeier
  • Patent number: 4581413
    Abstract: Vinyl dispersion resins containing a major proportion of vinyl chloride that provide fluid suspensions thereof with thixotropic properties are obtained by isolating and drying the vinyl chloride polymer resin from an emulsion (latex) thereof containing a small amount of a cross-linked, water-swellable polymer of an unsaturated carboxylic acid.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: April 8, 1986
    Assignee: The B. F. Goodrich Company
    Inventor: Jong S. Kim
  • Patent number: 4578429
    Abstract: The present invention relates to a thermally stable modified selectively hydrogenated high 1,2 content block copolymer wherein at least one acid compound is grafted to the block copolymer at a secondary or tertiary carbon position.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: March 25, 1986
    Assignee: Shell Oil Company
    Inventors: William P. Gergen, Robert G. Lutz, Richard Gelles
  • Patent number: 4576995
    Abstract: Disclosed is an adhesive for bonding an ethylene/vinyl alcohol copolymer and polystyrene, which comprises a modified ethylene/vinyl acetate copolymer obtained by graft-copolymerizing a styrenic vinyl monomer and an .alpha.,.beta.-unsaturated carboxylic acid to an ethylene/vinyl acetate copolymer. A laminated article having the said adhesive as an interlayer and production thereof are also disclosed. The laminated article shows strong resistance to delamination and excels in processability. Therefore, the laminate is valuable as a deep-draw forming material with enhanced gas barrier properties for a preservation rigid container for foods.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: March 18, 1986
    Assignee: Takeda Chemical Industries, Inc.
    Inventors: Masamitsu Nakabayashi, Yuzo Furukawa, Akira Tashiro
  • Patent number: 4575526
    Abstract: A composition comprising:(A) a first component selected from the group consisting of:(i) an oil-soluble ethylene backbone polymer having a number average molecular weight in the range of about 500 to about 50,000;(ii) a hydrocarbyl-substituted phenol of the formula(R*).sub.a --Ar--(OH).sub.
    Type: Grant
    Filed: March 12, 1985
    Date of Patent: March 11, 1986
    Assignee: The Lubrizol Corporation
    Inventors: Casper J. Dorer, Jr., Katsumi Hayashi
  • Patent number: 4558098
    Abstract: There is provided a heat-resistant methacrylic resin composition, which comprises 1 to 99% by weight of a copolymer [I] obtained by copolymerizing methyl methacrylate, an aromatic vinyl compound and maleic anhydride and 99 to 1% by weight of a copolymer [II] obtained by copolymerizing 80 to 100% by weight of methyl methacrylate and 0 to 20% by weight of other copolymerizable ethylenic monomer.The resin composition according to the present invention is excellent in characteristics such as optical characteristics, mechanical properties, weathering resistance and molding processability as well as in productivity.
    Type: Grant
    Filed: December 19, 1983
    Date of Patent: December 10, 1985
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Kazumasa Kamata, Yoshio Nakai, Yasunori Shimomura
  • Patent number: 4556690
    Abstract: An acetal resin composition comprising (A) an acetal resin and (B) 1 to 200 parts by weight, per 100 parts by weight of the acetal resin (A), of at least one modified alpha-olefin polymer, said modified alpha-olefin polymer (B) being a graft-copolymerization product of 100 parts by weight of an alpha-olefin polymer and 0.01 to 10 parts by weight of an unsaturated carboxylic acid or its derivative.
    Type: Grant
    Filed: May 3, 1984
    Date of Patent: December 3, 1985
    Assignee: Mitsui Petrochemical Industries, Ltd
    Inventor: Mikio Nakagawa
  • Patent number: 4542189
    Abstract: A process for the preparation of rubber-modified thermoplastic compositions having high temperature stability includes the steps of dissolving a rubber polymer in a solvent selected from the group consisting of monovinyl aromatic monomers, olefinically unsaturated nitriles and mixtures thereof to form a feed solution, introducing the feed solution into a reactor capable of intimately mixing multiple immiscible phases, introducing into the reactor a separate liquid monomer feed stream containing monomers selected from the group consisting of unsaturated dicarboxylic acid anhydrides, olefinically unsaturated nitriles and mixtures thereof, heating the feed solution and feed stream under pressure to a temperature sufficient for polymerization to begin and intimately mixing and polymerizing the monomers around the rubber polymer in the reactor to form a thermoplastic resin composition.
    Type: Grant
    Filed: September 26, 1983
    Date of Patent: September 17, 1985
    Assignee: The Standard Oil Company
    Inventors: Christopher L. Bodolus, David A. Woodhead
  • Patent number: 4542090
    Abstract: This invention describes an improved ionizing radiation sensitive material having high contrast, high sensitivity and comprised of a metal complex of a mixed half-ester or half amide product of the reaction of an N-hydroxy or N-aminoalkyl amide and a hydroxy alkyl terminally unsaturated compound with an alkylvinyl ether-maleic anhydride copolymer. A typical material is made by reacting a metal salt with the mixed half-ester or half-amide product of the reaction of an N-hydroxy or N-amino alkyl amide and a hydroxy alkyl terminally unsaturated compound with an alkyl vinyl ether-maleic anhydride copolymer.
    Type: Grant
    Filed: April 5, 1984
    Date of Patent: September 17, 1985
    Assignee: GAF Corporation
    Inventor: David F. Lewis
  • Patent number: 4535102
    Abstract: Disclosed is an adhesive coating material for a hard tissue, which comprises (1) a polymer having an acid value of 30 to 700 and including in recurring units a hydrophobic group and two carboxyl (--COOH) groups or one carboxylic anhydride ##STR1## group bonded to the polymer, said carboxyl groups or carboxylic anhydride group being bonded to adjacent carbon atoms, and (2) a polymerizable vinyl compound or a mixture of said polymerizable vinyl compound and an organic titanate compound.
    Type: Grant
    Filed: October 6, 1983
    Date of Patent: August 13, 1985
    Assignee: Tokuyama Soda Kabushiki Kaisha
    Inventors: Koshi Kusumoto, Toshio Kawaguchi, Takeshi Nakahara, Shinichiro Kunimoto
  • Patent number: 4533700
    Abstract: A hydrocarbon resin consisting essentially of a copolymer of (A) an unsaturated chain hydrocarbon or a cyclic hydrocarbon having a vinylidene group and (B) 9,10-dihydrodicyclopentadiene or its derivative, or a hydrocarbon resin modified by addition reacting an ethylenically unsaturated carboxylic acid or its anhydride, or hydrogen, to the above-mentioned copolymer. The hydrocarbon resin and the modified hydrocarbon resin have a high softening point and a low melt viscosity, and are suitable for use in adhesives and traffic paints.
    Type: Grant
    Filed: January 19, 1984
    Date of Patent: August 6, 1985
    Assignee: Mitsui Petrochemical Industries Ltd.
    Inventors: Kinya Mizui, Masami Takeda, Tadao Iwata
  • Patent number: 4532301
    Abstract: Radial block polymers having at least four arms. In one embodiment, the radial block polymers are prepared using a bisdiazobicyclooctane polymerization initiator. In another embodiment, five arm radial block polymers of this invention are well suited for use as impact modifiers for thermoformable plastic resins.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: July 30, 1985
    Assignee: Atlantic Richfield Company
    Inventor: Barry D. Dean
  • Patent number: 4526927
    Abstract: A thermoplastic molding material contains a styrene polymer, a polyphenylene ether and, as a component for improving the impact strength, a block copolymer obtained by reacting an ethylene copolymer with an active polymeric anion.
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: July 2, 1985
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Hambrecht, Franz Brandstetter, Walter Ziegler, Wolfgang F. Muller, Klaus Bronstert, Adolf Echte
  • Patent number: 4526579
    Abstract: A process for grafting a hydrophilic polymer of a carboxylic acid or a salt thereof onto the surface of a natural rubber article by contacting said article in reaction inert solvent with a vinyl carboxylic acid anhydride and initiator, and subsequent washing and hydrolysis of anhydride groups to carboxylate groups and an article when prepared by the invention process.
    Type: Grant
    Filed: June 17, 1983
    Date of Patent: July 2, 1985
    Assignee: Pfizer Inc.
    Inventor: Parviz R. Ainpour
  • Patent number: 4525536
    Abstract: A heat resistant resin composition comprising from 10 to 90% by weight of a copolymer A and from 90 to 10% by weight of a copolymer B, in which the copolymer A is composed of an N-aromatic maleimide monomer residue, a maleimide monomer residue, a vinyl aromatic monomer residue and, optionally other vinyl monomer residue, the total content of the N-aromatic maleimide monomer residue and the maleimide monomer residue being from 10 to 45%, the content of the N-aromatic maleimide monomer residue being greater than the content of the maleimide monomer residue, the content of the vinyl aromatic monomer residue being from 90 to 55% and the content of said other vinyl monomer residue being from 0 to 20%, and the copolymer B is composed of a vinyl cyanide monomer residue, a vinyl aromatic monomer residue and, optionally other vinyl monomer residue, the content of the vinyl cyanide monomer residue being from 20 to 55%, the content of the vinyl aromatic monomer residue being from 80 to 45% and the content of said other
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: June 25, 1985
    Assignee: Mitsubishi Monsanto Chemical Company
    Inventors: Sadao Ikuma, Yuji Aoki, Noboru Watanabe
  • Patent number: RE32261
    Abstract: Solid copolymers are produced by copolymerizing a mixture of: (A) at least 30% by weight of a monomer having the formula: ##STR1## wherein R.sub.1 is H or CH.sub.3 and R.sub.2 is an alkyl radical containing from 1 to 14 carbon atoms; (B) from 3 to 20% by weight of an ethylenic .alpha.,.beta. unsaturated carboxylic acid or anhydride thereof, or from 3 to 40% by weight of glycidyl acrylate or glycidyl methacrylate; and (C) from 0 to 67% by weight of a monomer copolymerizable with said monomers (A) and (B). Preferably, the mixture is first bulk-polymerized until conversion to the copolymer is from 10 to 80% by weight and the polymerization is completed by suspension-polymerization. Thermosetting solid coating compositions are produced by mixing a major proportion of a solid copolymer so produced with a minor proportion of a cross-linking compound or with an epoxy resin containing at least 2 epoxy radicals in the molecule in presence of a tertiary amine curing accelerator.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: October 7, 1986
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kuniomi Hirota, Akio Masumoto, Hiroshi Ozawa, Nobuki Kobayashi, Teruo Honda