Mixture Contains Solid Polymer Derived From Reactant Containing Carboxylic Acid Group Patents (Class 525/78)
  • Patent number: 4997720
    Abstract: Thermoplastic compositions and articles made therefrom which have a high receptivity toward automotive paints comprises the following components:2%-25% of a copolymer of an ethylenically unsaturated carboxylic acid and ethylene,3%-50% of an elastomer comprising an ethylene-alpha-olefin copolymer,1%-50% of a crystalline homopolymer or copolymer of propylene,5%-40% of polyethylene or a copolymer of ethylene and an alpha-olefin,2%-20% of an epoxy or phenoxy resin; andoptionally, up to 50% of an inorganic filler. Such articles, when injection molded, exhibit flexural moduli in the range of 100,000 to 200,000 psi and have excellent paintability, a broad range of stiffness values and high impact and tensile strengths suitable for automotive applications such as bumpers, facias and wheel covers.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: March 5, 1991
    Assignee: Dexter Corporation
    Inventors: Edward Bourbonais, Davei Yu, Khemchand Nangrani
  • Patent number: 4994508
    Abstract: A composition comprising,(a) 1 to 99 parts by weight of a specific hydrogenated product of a block copolymer having at least one polymer block composed mainly of a vinyl aromatic compound and at least one polymer block composed mainly of a conjugated diene compound, a modified product which comprises said product modified with an .alpha.,.beta.-unsaturated carboxylic acid or a derivative thereof, or a mixture of said product and said modified product, wherein the content of the vinyl aromatic compound prior to hydrogenation is 5 to 95% by weight and a content of vinyl linkages [V] prior to hydrogenation which originated from the conjugated diene compound is 10 to 80%, said product satisfying the following conditions;(1) the hydrogenated ratio [A] of the total of aliphatic double bonds which originated from the conjugated diene compound is not lower than 5% and lower than 50%, and[B]/[V].sup.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: February 19, 1991
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Toshinori Shiraki, Yasuo Hattori
  • Patent number: 4983435
    Abstract: As an adhesive used between a polypropylene layer and an ethylene/vinyl alcohol copolymer layer, there is provided an adhesive composition that comprises 98.9 to 59.9% by weight of a modified polypropylene (A) partly or fully grafted with an unsaturated carboxylic acid or its derivative, 1.0 to 40% by weight of an ethylene/.alpha.-olefin copolymer (B) having a density of 0.915 to 0.940 g/cc, and a melting point of 115.degree. to 130.degree. C., and 0.1% by weight or more but less than 3% by weight of a hydrocarbon type synthetic elastomer (C).
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: January 8, 1991
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Toru Ueki, Hajime Sentoku, Takashi Miyazaki, Eiichi Sugihara
  • Patent number: 4978731
    Abstract: A method for monitoring the coating weight, uniformity, defects or markings present in a coating of a composition applied to a substrate comprises the steps:(a) providing a substrate with a functional coating of a composition comprising an effective amount of uvescer that absorbs radiant energy, i.e., has excitation energy, of wavelength .lambda..sub.1 and emits radiant energy of wavelength .lambda..sub.2 ;(b) scanning the coating with radiant energy having a wavelength within wavelength .lambda..sub.1 ;(c) detecting the radiant energy of wavelength .lambda..sub.2 emitted by the coating; and(d) optionally, correlating the emitted radiant energy to independently measured standard coating weights or thicknesses, of the coating so as to measure coating weight, thickness, uniformity, defects, or markings.The invention also provides novel siloxane polymers containing fluorene uvaphores which are useful in the coating comopsition of the invention.
    Type: Grant
    Filed: February 2, 1990
    Date of Patent: December 18, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kurt C. Melancon, George V. D. Tiers
  • Patent number: 4977212
    Abstract: An adhesive resin composition useful for bonding a resin having gas barrier properties and a hydrophobic thermoplastic resin which comprises an ethylene-acrylate or methacrylate copolymer grafted with an ethylenic unsaturated carboxylic acid or its acid anhydride; and 0.02 to 0.6 equivalent to the ethylenic unsaturated carboxylic acid or its acid anhydride of a periodic table group Ia or IIa metal hydroxide, or said metal hydroxide and an ethylene-acrylate or methacrylate copolymer. A laminated material of a resin having gas barrier properties and a hydrophobic thermoplastic resin laminated with the adhesive resin composition and a resin composition comprising the adhesive resin composition, a resin having gas barrier properties and a hydrophobic thermoplastic resin are also disclosed.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: December 11, 1990
    Assignees: Kuraray Co., Ltd., Nippon Petrochemicals Co., Ltd.
    Inventors: Toshiyuki Akazawa, Takuji Okaya, Takashi Inoue, Toshitaka Kobayashi
  • Patent number: 4977206
    Abstract: A hot melt adhesive and a laminar structure fabricated from a blend comprising a modified or unmodified ethylenic copolymer, a modified or unmodified butene-1 homopolymer or copolymer, a stabilizer and one or more of: a tackifying resin compatible with the major amount of modified polymer, a wax, and atactic polypropylene.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: December 11, 1990
    Assignee: Shell Oil Company
    Inventors: Charles C. Hwo, Simone Mostert
  • Patent number: 4977201
    Abstract: The present invention provides a polyvinyl chloride plastisol composition characterized by containing a specified epoxy resin, a blocked isocyanate and, if necessary, a latent curing agent for an epoxy resin as tackifiers. This plastisol composition is excellent in storage stability and can strongly adhere to various metals and various undercoate of metals (such as electro-deposit) by baking even at a relatively low temperature to give a coating which is free from blowing and exhibits excellent adhesion after the immersion in hot water or the heating. Therefore, the composition is useful as a body sealer or undercoat for an automotive body.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: December 11, 1990
    Assignees: Asahi Denka Kogyo K.K., A,C,R. Co., Ltd.
    Inventors: Akio Ogawa, Masahiko Shimada, Kazuhiko Ando
  • Patent number: 4975487
    Abstract: A polymeric polyblend comprising a vinylidene chloride interpolymer and a thermoplastic graft copolymer.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: December 4, 1990
    Assignee: The Dow Chemical Company
    Inventor: Yun C. Sun
  • Patent number: 4972020
    Abstract: A modified block copolymer composition comprising a thermoplastic polymer and a modified block copolymer consisting essentially of a base block copolymer of a monovinyl substituted aromatic hydrocarbon polymer block and an olefin compound polymer block having an ethylenic unsaturation degree not exceeding 20%, the base block copolymer having a molecular unit containing a carboxylic acid group and/or a group derived therefrom grafted thereto. The modified block copolymer composition of the present invention is a resinous composition excellent in impact resistance, adhesion, paint adhesion, weatherability, resistance to thermal deterioration, transparency and gloss or a rubbery or leather-like composition excellent in heat resistance, abrasion resistance, compression set resistance, adhesion, transparency, oil resistance, weatherability and resistance to heat aging.
    Type: Grant
    Filed: February 7, 1989
    Date of Patent: November 20, 1990
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Toshinori Shiraki, Fusakazu Hayano, Hideo Morita
  • Patent number: 4963613
    Abstract: An adhesive composition comprising:a polymer latex containing a copolymer which comprises(a) 40 to 80% by weight of a conjugated diene monomer and(b) 0.5 to 30% by weight of a cyanated vinyl monomer,(c) 5 to 35% by weight of vinylpyridine and(d) not more than 53% by weight of an aromatic vinyl monomer; anda resorcin-formalin resin, which composition can adhere various fibers to rubbers.
    Type: Grant
    Filed: July 7, 1989
    Date of Patent: October 16, 1990
    Assignee: Sumitomo Naugatuck Co., Ltd.
    Inventors: Yasushi Toyoda, Saburo Mishiba
  • Patent number: 4962148
    Abstract: There is here provided a thermoplastic resin composition containing(I) 99 to 1% by weight of a polypropylene,(II) 1 to 99% by weight of at least one kind of resin selected from the group consisting of an aromatic polyester resin, a polycarbonate resin, a polyamide resin, a polyphenylene ether resin or a mixture of the polyphenylene ether resin and a styrene polymer and an ABS resin, and(III) 0.1 to 100 parts by weight, based on 100 parts by weight of the aforesaid resins (I)+(II), of a multi-phase structure thermoplastic resin which is composed of 5 to 95% by weight of a polyolefin and 95 to 5% by weight of a vinyl polymer or copolymer obtained from at least one kind of vinyl monomer, either of both the components being in the state of a dispersion phase having a particle diameter of 0.001 to 10 .mu.m. A method for preparing the above-mentioned thermoplastic resin composition is also provided here.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: October 9, 1990
    Assignees: Nippon Petrochemicals Co., Ltd, Nippon Oil & Fats Co., Ltd.
    Inventors: Yuichi Orikasa, Suehiro Sakazume, Sadahiro Nishimura, Yoshinori Maki
  • Patent number: 4957968
    Abstract: The present invention relates to an adhesive thermoplastic elastomer composition comprising three major components as follows:(a) at least one polyolefin modified by a chemically reactive functional group such as a carboxylic acid or its derivatives including anhydride, acid chloride, isocyanate, oxazoline, epoxide, amine and hydroxide;(b) at least one other polymer prepared from one or more of the following: ethylene, propylene, butylene, isobutylene, octene-1, 4 methyl pentene-1, hexene-1 or mixtures; and(c) at least one olefinic elastomer, including elastomeric ethylene-propylene copolymers, elastomeric ethylene-propylene terpolymers, polyisoprene, polyisobutylene, ethylene-propylene copoloymer rubber, polybutadiene, natural rubber, elastomeric polyesters, polyurethane elastomers, polyamide elastomers and mixtures.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: September 18, 1990
    Assignee: Monsanto Company
    Inventors: Ashok M. Adur, Robert C. Constable
  • Patent number: 4945005
    Abstract: Thermoplastic compositions and articles made therefore which have a high receptivity toward automotive paints comprises components (a), (b), (c), (d), and (e), wherein, for example2%-25% (a) is a copolymer of an ethylenically unsaturated carboxylic acid and ethylene,3%-50% (b) is an elastomer comprising an ethylene-alpha-olefin copolymer,0%-55% (c) is a crystalline homopolymer or copolymer of propylene,5%-50% (d) is an inorganic filler, and10%-35% (e) is polyethylene or a copolymer of ethylene and an alpha-olefin.Such articles, when injection molded, exhibit flexural moduli in the range of 30,000 to 400,000 psi and have excellent paintability, a broad range of stiffness values and high impact and tensile strengths suitable for automotive applications such as bumpers and facias and wheel covers.
    Type: Grant
    Filed: July 28, 1989
    Date of Patent: July 31, 1990
    Assignee: Dexter Corporation
    Inventors: John F. Aleckner, Jr., David J. Cherry, Lee R. Spencer, Jr.
  • Patent number: 4942096
    Abstract: The present invention relates to a polypropylene resin composition useful as an adhesive comprising(A) from about 51 wt. % to about 99 wt. % of a modified polypropylene resin graft-modified with a radical-polymerizable polar unsaturated compound or a mixture of the modified polypropylene resin graft-modified with a radical polymerizable polar unsaturated compound with an unmodified polypropylene resin,(B) a substantially non-crystalline .alpha.-olefin copolymer, and(C) an ethylene/.alpha.-olefin coplymer having a density of from about 0.860 g/cm.sup.3 to less than about 0.910 g/cm.sup.3, a n-hexane insolubility of at least about 50 wt. % and a melting point of at least 100.degree. C.,wherein the combined weights of components (B) and (C) is from about 1 wt. % to about 49 wt. %, and the weight ratio of (B)/(C) is from about 1/99 to about 99/1.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: July 17, 1990
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Masaru Abe, Yoichi Kawai, Takashi Miyazaki
  • Patent number: 4940747
    Abstract: 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: Grant
    Filed: November 17, 1986
    Date of Patent: July 10, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Eichenauer, Christian Lindner, Karl-Heinz Ott, Hans-Eberhard Braese
  • Patent number: 4914138
    Abstract: A polymer blend comprises a high nitrile polymer and a compatible polyolefin functionalized with an unsaturated compound selected from the group consisting of unsaturated carboxylic acids, esters, anhydrides and imides. Such blends can be used to form films and membranes having improved thermal, mechanical and optical properties. The blend combines the low oxygen permeability of high nitrile polymers with the low water vapor permeability of the polyolefins and are, therefore, useful in the packaging industry. A method for forming blends of high nitrile polymers with polyolefins includes the step of functinalizing a polyolefin prepared from a monoolefin having from 2 to about 6 carbon atoms with an unsaturated compound selected from the group consisting of unsaturated carboxylic acids, esters, anhydrides and imides and blending from about 99 to 1 parts by weight of the functionalized polyolefin with from about 1 to 99 parts by weight of the high nitrile polymer.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: April 3, 1990
    Assignee: The Standard Oil Company
    Inventors: Elena S. Percec, Lucy Melamud, Gerald P. Coffey
  • Patent number: 4910254
    Abstract: A film prepared from a compatibilized resin blend comprising an olefin polymer, a polymer of a vinyl aromatic monomer and a compatibilizing amount of a graft copolymer of a vinyl aromatic monomer and an EPDM rubber exhibits improved properties making it highly desirable in such end uses as grocery and trash bags.
    Type: Grant
    Filed: September 24, 1987
    Date of Patent: March 20, 1990
    Assignee: The Dow Chemical Company
    Inventor: Robert T. Johnston
  • Patent number: 4900787
    Abstract: 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: Grant
    Filed: September 7, 1988
    Date of Patent: February 13, 1990
    Assignee: Sumitomo Naugatuck Co., Ltd.
    Inventors: Hajime Sakano, Akitoshi Ito, Motoichi Yano, Yasuhiro Honda, Takayoshi Fujiwara
  • Patent number: 4898784
    Abstract: An adhesive composition comprising a plurality of selectively hydrogenated block copolymers, each of said block copolymers comprising at least one polymeric block containing predominantly monoalkenyl aromatic hydrocarbon monomer units and at least one polymeric block containing predominantly conjugated diolefin monomer units, at least one of which block copolymers is carboxylated and at least one of which block copolymers is not carboxylated and laminated structures comprising a plurality of polymeric layers tied together with said adhesive composition. The adhesive composition contains a relatively minor amount of carboxyl groups, on average, per polymer chain in the composition and is particularly useful in the preparation of laminated structures via coextrusion or similar processes, wherein the various layers are brought together in the molten phase while in motion, when one or more layers in the laminated structure comprises a polar group reactive with the carboxyl groups.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: February 6, 1990
    Assignee: Shell Oil Company
    Inventors: Andrea Sanders, Glenn R. Himes
  • Patent number: 4897449
    Abstract: A multilayer interpolymer material of an elastomeric inner phase polymerized from (a) 50-99.9 parts of at least one among: conjugated dienes and alkyl and aralkyl acrylates, (b) 0-49.9 parts of at least one copolymerizable monomer, (c) 0.05-8 parts of at least one crosslinking monomer, and (d) 0.05-6 parts of at least one grafting monomer, and a nonelastomeric outer phase, polymerized from (a) 50-99.9 parts by weight of at least one among: alkyl methacrylates, vinyl aromatic hydrocarbons and unsaturated nitriles, (b) 0.1-50 parts of at least one copolymerizable monomer, and (c) 0-5 parts of at least one chain-limiting agent, the parts being given by weight, it being possible for the said polymer to comprise a nonelastomeric or else elastomeric core phase without grafting and crosslinking monomers. Two populations of particles of mean diameter of approximately 40-150 nm and approximately 160-500 nm respectively are mixed in given ratios. This improves the impact strength of the resultant matrices.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: January 30, 1990
    Assignee: Norsolor
    Inventors: Patrice Gaillard, Jean-Claude Robinet
  • Patent number: 4897447
    Abstract: A thermoplastic molding composition and modifier for improving the impact strength and toughness thereof in which the modifier is the combination of (1) an EPM or EPDM rubber grafted with an alpha-beta unsaturated dicarboxylic acid or anhydride or an epoxy functional alpha-beta ethylenically unsaturated hydrocarbon and (2) an epoxy acrylate oligomer of bisphenol A.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: January 30, 1990
    Assignee: Copolymer Rubber & Chemical Corp.
    Inventor: William G. Williams
  • Patent number: 4886856
    Abstract: Novel graft copolymer elastomers comprising a rubbery substrate polymer and a graft copolymer of a monomer capable of grafting to the rubbery substrate and a copolymerizable comonomer having pendant reactive groups capable of functionally reacting with reactive polar functionality of a copolymer of a monovinylidene aromatic monomer and a copolymerizable polar comonomer are disclosed.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: December 12, 1989
    Assignee: The Dow Chemical Company
    Inventors: Bibiana S. Y. Chen, David E. Henton
  • Patent number: 4870131
    Abstract: A composition capable of providing low gloss in a part molded therefrom consisting essentially of 20 to 50% by weight of a graft copolymer of ethylenically unsaturated monomers grafted unto a rubber with a rubber content of 5 to 80% by weight based on the weight of Component A; 80 to 50% by weight of one or more thermoplastic, rubber-free copolymers containing: (i) 1 to 25% by weight based on the total weight of Component (B) of an unsaturated dicarboxylic acid anhydride monomer and (ii) 0.5 to 2% by weight based on the total weight of Component (B) of an ethylenically unsaturated copolymerized epoxide compound.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: September 26, 1989
    Assignee: Monsanto Company
    Inventors: Ramesh M. Pisipati, Joseph O. Campbell
  • Patent number: 4868057
    Abstract: A laminated structure comprising a plurality of polymeric layers at least two of said polymeric layers bonded together with an adhesive composition comprising a modified olefin polymer and at least one selectively hydrogenated block copolymer having at least one block which is predominantly a monoalkenyl aromatic hydrocarbon polymer block and at least one block which is a hydrogenated conjugated diolefin polymeric block. The adhesive composition used in the laminated structure significantly improves compatibility of the various polymeric layers thereby enabling the laminated structure or any excess thereof to be used in recycle as well as various molding applications.
    Type: Grant
    Filed: December 21, 1987
    Date of Patent: September 19, 1989
    Assignee: Shell Oil Company
    Inventor: Glenn R. Himes
  • Patent number: 4863988
    Abstract: A composition for curable paints, comprising(A) 100 parts by weight of a resin for curable paints, and(B) 0.5 to 10 parts by weight of chlorinated and graft-modified polypropylene which is produced by chlorinating polypropylene graft-modified with a grafting component selected from the group consisting of alpha,beta-unsaturated dicarboxylic acids, anhydrides thereof and esters thereof, and which has a chlorine content of 5 to 50% by weight, said graft-modified polypropylene having a degree of saponification of 5 to 150 mg/g and an intrinsic viscosity [.eta.] of 0.1 to 5 dl/g. A curable paint comprising the composition and a diluent.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: September 5, 1989
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Hajime Inagaki, Tadao Saitoh
  • Patent number: 4861676
    Abstract: A blend of ethylene copolymer, ethylene copolymer modified by grafting with a comonomer containing pendant acid or acid derivative functionality, styrene polymer, and alicyclic resin modifier or stabilized rosin ester provides a useful adhesive, particularly for bonding polystyrene to barrier polymers.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: August 29, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: I-Hwa Lee
  • Patent number: 4861677
    Abstract: A blend of ethylene vinyl acetate copolymer, ethylene vinyl acetate copolymer modified by grafting with a comonomer containing pendant acid or acid derivative functionality, and impact-modified polystyrene provides a useful adhesive particularly for bonding polystyrene to gas barrier polymers.
    Type: Grant
    Filed: June 3, 1988
    Date of Patent: August 29, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: I-Hwa Lee
  • Patent number: 4842947
    Abstract: Adhesive blends especially suitable for adhesion to polypropylene and gas barrier materials are disclosed, as are composite structures incorporating such blends, and methods of making such composite structures. The blends are preferably elastomer free, and comprise a mixture of an adhesion-promoting amount of an ethylene homopolymer about 0.1 to 30 wt. % of a non-elastomeric graft copolymer of polypropylene and a graft monomer comprising a polymerizable, ethylenically unsaturated carboxylic acid or derivative, and the balance a substantially non-elastomeric ethylene/propylene copolymer wherein ethylene comprises at least 5 wt. % of the copolymer.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: June 27, 1989
    Assignee: Quantum Chemical Corporation
    Inventors: Kevin V. Jachec, Peter D. Becker
  • Patent number: 4839422
    Abstract: An adhesive composition which contains a thermoplastic elastomer which includes ethylene propylene rubber, ethylene propylene diene monomer, polyisobutylene butyl rubber, ethylene vinyl acetate graft copolymers thereof with C.sub.3 to C.sub.10 unsaturated mono- and polycarboxylic acids, a tackifying resin and a di- or polyamine cross-linking agent having 2-10 carbon atoms, which is useful as a hot melt or pressure sensitive adhesive having enhanced higher temperature properties.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: June 13, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Kenneth O. McElrath, Martha L. Robertson, Wai Y. Chow
  • Patent number: 4835215
    Abstract: 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: Grant
    Filed: December 31, 1986
    Date of Patent: May 30, 1989
    Assignee: Sugitomo Naugatuck Co., Ltd.
    Inventors: Hajime Sakano, Akitoshi Ito, Motoichi Yano
  • Patent number: 4833195
    Abstract: A thermoplastic pelletizable polymer composition comprising an oligomer or degraded polyolefin and an olefinic elastomer. Optionally, the composition can also include a polyolefin thermoplastic polymer. The composition, when converted to a film or fabric meets the criteria or drapability, low hardness on the Shore A scale, high melt flow and reprocessability.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: May 23, 1989
    Assignee: BP Performance Polymers, Inc.
    Inventors: Ashok M. Adur, Joseph M. Hogue, Jr.
  • Patent number: 4824906
    Abstract: A blend of 80-99 weight percent chlorinated polyethylene containing 15-60 weight percent chlorine with 20-1 weight percent of polyethylene containing up to 5 weight percent chlorine and 0.5-5 weight percent of a grafted unsaturated dicarboxylic acid or anhydride is disclosed. The preferred chlorinated polyethylene is made by chlorinating a blend of high and low density polyethylene.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: April 25, 1989
    Assignee: E. I. DuPont De Nemours and Company
    Inventors: Wolfgang Honsberg, Royce E. Ennis
  • Patent number: 4822856
    Abstract: A process for preparing a polymeric blend stock comprising fluidizing a first particulated polymer, contacting the particulated polymer with droplets of a latex of a second polymer or polymer mixture, retaining the resulting product in a fluid state under conditions sufficient to dry the latex, and recovering the resulting dried polymeric blend stock.
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: April 18, 1989
    Assignee: The Dow Chemical Company
    Inventors: Eugene R. Moore, Wen H. Tong
  • Patent number: 4801647
    Abstract: A thermoplastic elastomeric composition comprising a dynamically crosslinked grafted polyolefin copolymer elastomer and a thermoplastic crystalline polyolefin is disclosed. The crosslinked elastomer is dispersed in the thermoplastic crystalline polyolefin which is present as the continuous phase. The grafted elastomer is ethylene/propylene/diene terpolymer or ethylene/propylene copolymer grafted with fumaric acid, maleic acid, maleic anhydride or derivatives thereof capable of reacting with diamine crosslinking agents.
    Type: Grant
    Filed: March 10, 1988
    Date of Patent: January 31, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James R. Wolfe, Jr.
  • Patent number: 4792583
    Abstract: Blends are disclosed of monoolefin rubber with high-diene hydrocarbon rubber in which the monoolefin rubber is in the form of discrete vulcanized particles dispersed in a matrix of unvulcanized high-diene hydrocarbon rubber. The blends can be easily processed, and in a subsequent step, the high-diene hydrocarbon portion cured to give rubber articles having the ozone resistance of the monoolefin rubber and the good physical properties of the high-diene hydrocarbon rubber.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: December 20, 1988
    Assignee: Monsanto Company
    Inventor: Aubert Y. Coran
  • Patent number: 4788264
    Abstract: A method of preparing a modified polyethylene which comprises melt kneading 100 parts by weight of (A) a high density polyethylene having a branching degree of not more than 5 per 1,000 carbon atoms of principal chain, from 0.2 to 3 parts by weight of (B) an unsaturated carboxylic acid or a derivative thereof, and from 0.01 to 0.5 part by weight of (C) an organic peroxide, the weight ratio of (C) to (B), (C)/(B), being from 0.01 to 0.5.The modified polyethylenes obtained by the use of the method of the present invention not only have excellent heat resistance, moldability, and so forth, but also are extremely improved in their adhesion property, especially in the property of adhering to a saponified ethylene-vinyl acetate copolymer, a polyamide resin, and a polyester resin, and therefore the modified polyethylenes can be advantageously used with these materials for the production of laminated boards.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: November 29, 1988
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventor: Mamoru Ukita
  • Patent number: 4774144
    Abstract: Adhesive blends especially suitable for adhesion to polypropylene and gas barrier materials are disclosed, as are composite structures incorporating such blends, and methods of making such composite structures. The blends are preferably elastomer free, and comprise a mixture of an adhesion-promoting amount of high molecular weight low density polyethylene having a narrow molecular weight distribution, about 0.1 to 30 wt. % of a non-elastomeric copolymer of propylene and a polymerizable, ethylenically unsaturated carboxylic acid or derivative, and the balance a non-elastomeric ethylene/propylene copolymer wherein ethylene comprises at least 5 wt. % of the copolymer.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: September 27, 1988
    Assignee: Enron Chemical Company
    Inventors: Kevin V. Jachec, Peter D. Becker
  • Patent number: 4767803
    Abstract: Disclosed is a method of producing coagulated colloidal particles with close-packed structure which comprises;(A) adding a coagulant to aqueous colloidal particles at a temperature lower than softening temperature of the colloidal particles under such conditions that said coagulant will be present in discrete units in the dispersion before it is brought into solution by diffusion;(B) allowing the molecules of coagulant to gradually diffuse from said coagulant units into the surrounding dispersion, thereby coagulating the colloidal particles on the surface of each coagulant unit, causing the coagulated particles to grow from inside to outside of each unit, and producing coagulated particles of desired size with regularly packed structure;(C) separating the coagulated particles thus formed from the dispersion; and(D) drying, or heating in an aqueous phase, the coagulated particles separated above at a temperature lower than the softening point of said colloidal particles.
    Type: Grant
    Filed: July 2, 1986
    Date of Patent: August 30, 1988
    Assignee: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hideo Yasui, Yasuhiro Miki, Wataru Okada
  • Patent number: 4767817
    Abstract: Shaped articles which have excellent solvent resistance and resistance to fatty acids are formed from a thermoplastic polyblend of poly(vinyl chloride) (PVC), chlorinated polyethylene (CPE), polyolefin (PO), and a graft copolymer of a polyolefin (PO-G). The thermoplastic polyblend contains a PO and PO-G (PO/PO-G) as a first continuous single phase, PVC and CPE as the second and third dispersed phases, and the relative amounts of the components are chosen so that there is, at most, an equal amount by weight of PO and PO-G each of which may be present in an amount as high as 40 parts by weight when the PVC is present in an amount in the range from 40 to 70 parts, so as to provide a mechanically compatible polyblend without miscibility or chemical compatibility. Further, a glass fiber reinforced (GFR) polyblend of PVC/CPE/PO/PO-G having a HDT of at least 95.degree. C. and sufficient thermoformability to form the desired article has excellent notched impact strength.
    Type: Grant
    Filed: March 9, 1987
    Date of Patent: August 30, 1988
    Assignee: The B. F. Goodrich Company
    Inventor: Biing-Lin Lee
  • Patent number: 4766174
    Abstract: Melt-processible blends of aluminum ionomers of ethylene/unsaturated carboxylic acid copolymers and thermoplastic resins or elastomers are obtained by mixing the ethylene/acid copolymer and the thermoplastic resin or elastomer and simultaneously or subsequently neutralizing from about 1 to about 100% of the carboxylic acid groups of the ethylene copolymer with aluminum ions.
    Type: Grant
    Filed: January 2, 1986
    Date of Patent: August 23, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Robert J. Statz
  • Patent number: 4762882
    Abstract: A modified polyolefin resin and a composition containing therein such modified polyolefin, having excellent adhesive property and heat-sealing property at the time of high speed forming operations, the modified polyolefin resin consisting essentially of: a copolymer of ethylene and .alpha.-olefin having 4 or more carbon atoms, the copolymer having a density in a range of from 0.890 to 0.910 g/cm.sup.3, a ratio of a weight-average molecular weight (Mw) to a number-average molecular weight (Mn) of Mw/Mn=2 to 15, and a product of a melt tension (g) and a melt-index (g/10 min.) of a molten resin measured at 160.degree. C. of 4 or below; and unsaturated carboxylic acid or derivatives thereof grafted on the ethylene type copolymer at a ratio of from 0.01 to 3% by weight.
    Type: Grant
    Filed: June 26, 1986
    Date of Patent: August 9, 1988
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Shigeaki Okano, Katsuhiko Hayashi, Yoshiteru Sakurazawa, Yoshinori Suga
  • Patent number: 4757110
    Abstract: Rubbery thermoplastic blends comprise an acrylonitrile-butadiene-styrene or a styrene-acrylonitrile polymer, a rubbery carboxylated butadiene-acrylonitrile polymer and a metal oxide or hydroxide.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: July 12, 1988
    Assignee: Polysar Limited
    Inventor: Kyosaku Sato
  • Patent number: 4740543
    Abstract: A plastic vehicular instrument panel which is excellent in impact resistance, heat resistance, fabrication efficiency and appearance. The instrument panel is formed of a plastic material comprising as main components specified crystalline propylene-ethylene block copolymer ranging from 50 to 70 weight %, specified glass fibers ranging from 20 to 30 weight %, specified ethylene-propylene copolymer rubber ranging from 15 to 20 weight %, specified pigment ranging from 2 to 5 parts by weight relative to 100 parts by weight of total of the propylene-ethylene block copolymer, the glass fiber, and the ethylene-propylene copolymer rubber.
    Type: Grant
    Filed: August 8, 1986
    Date of Patent: April 26, 1988
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yoshio Matsuno, Hidehisa Watanabe
  • Patent number: 4740557
    Abstract: 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: Grant
    Filed: April 25, 1985
    Date of Patent: April 26, 1988
    Assignee: Mitsubishi Rayon Company Ltd.
    Inventors: Yoshio Nakai, Masamitsu Tateyama
  • Patent number: 4739011
    Abstract: A thermoplastic resin composition obtainable by blending 100 parts by weight of a mixture consisting of(A) 75 to 40% by weight of a propylene polymer,(B) 20 to 40% by weight of an ethylene-alpha-olefin copolymer, and(C) 5 to 30% by weight of a graft copolymer obtained by copolymerizing an aromatic vinyl compound and a polar vinyl compound in the presence of an ethylene-alpha-olefin copolymerwith(D) 0.1 to 5 parts by weight of an unsaturated dicarboxylic acid, an anhydride thereof or a mixture of the two, and(E) 0.01 to 0.3 part by weight of an organic radical-generating agent,and then subjecting the resulting blend to thermal treatment. Said composition has not only a high bending modulus inherently possessed by polypropylene resins but also remarkably improved coating property. Accordingly, the composition is useful as interior and exterior trim parts of automobiles and exterior trim parts of motorcycles.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: April 19, 1988
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Takashi Kawata, Yoshitaka Matsuo, Kenya Makino, Noboru Oshima
  • Patent number: 4732935
    Abstract: A thermoplastic resin composition of high heat resistance and high impact resistance in described, comprising: (A) 5 to 85% by weight of a copolymer prepared from 40 to 85% by weight of a monomer mixture of 2-isopropenylnaphthalene (2-IPN) and .alpha.-methylstyrene (.alpha.-MeSt), the proportion of 2-IPN being 5 to 70% by weight based on the total weight of 2-IPN and .alpha.-MeSt, 7.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: March 22, 1988
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takayuki Katto, Yasumasa Komatsu, Zenya Shiiki
  • Patent number: 4728692
    Abstract: A thermoplastic elastomer composition and process comprising a crystalline polyolefin, halogenated butyl rubber, olefin copolymer rubber, polyolefin modified with, e.g., maleic anhydride, and, optionally nitrile rubber, wherein the halogenated butyl rubber is at least partially crosslinked using a metal oxide and/or chloride, e.g., zinc oxide. Crosslinking is achieved under dynamic mixing conditions and the resulting composition has superior strength, performance and processing properties. Furthermore, use of nitrile rubber imparts improved oil resistance to the composition.
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: March 1, 1988
    Inventors: Eiji Sezaki, Takashi Mikami, Tsuyoshi Kanai, Toshio Yoshida, Kikuo Tanaka, Masaaki Saito
  • Patent number: 4728463
    Abstract: Brominated styrene-maleate copolymer containing at least 50 weight percent bromine and its use as a fire retardant.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: March 1, 1988
    Assignee: Ethyl Corporation
    Inventors: Burton J. Sutker, Gen-Shing Ti, Mo A. Khuddus
  • Patent number: 4696973
    Abstract: Am impact modifier comprising a blend of 100 parts by weight of a graft copolymer (A) obtained by graft-polymerizing in a single or more stages a monomer or monomer mixture consisting of 95 to 100% by weight of at least one monomer selected from the group consisting of alkyl acrylates, alkyl methacrylates, aromatic vinyl compounds and vinyl cyanide compounds and 0 to 5% by weight of a polyfunctional crosslinking agent on an acrylic elastomer mainly composed of an alkyl acrylate and containing 0.1 to 5% by weight of a polyfunctional crosslinking agent and/or a butadiene elastomer composed of a polybutadiene or a copolymer of 50% by weight or more of a butadiene and 50% by weight or less of other vinyl compound copolymerizable therewith and containing 0 to 5% by weight of a polyfunctional crosslinking agent, and 0.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: September 29, 1987
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Kazumasa Kamata, Kazuo Ueda, Kiyokazu Kitai
  • Patent number: H568
    Abstract: An olefin polymer composition comprising(A) 100 parts by weight of a homopolymer of 1-butene composed substantially of 1-butene units or a copolymer of 1-butene and another alpha-olefin containing at least 60 mole % of units derived from 1-butene,(B) 10 to 600 parts by weight of a homopolymer of propylene composed substantially of propylene units, a block copolymer of propylene and another alpha-olefin containing at least 50 mole % of units derived from propylene, or a random copolymer of propylene and another alpha-olefin containing at least 90 mole % of units derived from propylene, and(C) 10 to 600 parts by weight of a crystalline random copolymer of propylene and another alpha-olefin containing 50 to 87 mole % of units derived from propylene,at least one of components (A), (B) and (C) being partly modified with (D) an unsaturated carboxylic acid or its derivative; and a laminated structure comprising a substrate and a layer of a 1-butene polymer laminated thereto through an adhesive layer of the olefin po
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: January 3, 1989
    Assignee: Shell Oil Company
    Inventors: Haruhiko Tanaka, Katutoshi Kaneko