Acyclic Hydrocarbon Is Ethylene Patents (Class 525/324)
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Patent number: 5066726Abstract: A process to graft epoxy containing functional monomers to a base polymer is provided, the process comprising the steps of: providing a melt of a base polymer; containing the melt of the base polymer with a functional monomer in the presence of a free radical initiator at a temperature of less than 240.degree. C., the functional monomer comprising alpha-beta ethylenic unsaturation and an epoxy group; and recovering an epoxy functionalized polymer. Grafting the epoxy containing monomer to the base polymer at temperatures of 240.degree. C. and less results in a low level of hydrolyzed epoxy groups.Type: GrantFiled: April 23, 1990Date of Patent: November 19, 1991Assignee: Shell Oil CompanyInventor: Michael J. Modic
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Patent number: 5051484Abstract: A solid catalyst component for .alpha.-olefin polymerization containing as catalyst components at least titanium, magnesium and chlorine which are impregnated into an organic porous polymer carrier having a mean particle diameter of 5 to 1,000 .mu.m and a pore volume of 0.1 ml/g or above at a pore radius of 100 to 5,000 .ANG., a catalyst system comprising at least said solid catalyst component (A) and an organoaluminum compound (B), as well as a process for producing .alpha.-olefin polymers using said catalyst system.Type: GrantFiled: December 4, 1989Date of Patent: September 24, 1991Assignee: Sumitomo Chemical Company, LimitedInventors: Toshio Sasaki, Takeshi Ebara, Hiroyuki Kora, Kiyoshi Kawai, Mituharu Yamasaki, Syozo Kawamata
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Patent number: 5037890Abstract: A copolymer of an .alpha.-olefin with an aromatic diolefin such as divinylbenzene produced by means of Ziegler-Natta polymerization and having a vinylphenyl moiety is subjected to polymerization with an ethylenically unsaturated monomer by means of anion polymerization or free radical polymerization, whereby a graft-modified .alpha.-olefin copolymer is obtained.Type: GrantFiled: October 28, 1988Date of Patent: August 6, 1991Assignee: Mitsubishi Petrochemical Company LimitedInventors: Masuzo Yokoyama, Shinichi Yamauchi, Hiroshi Nakano, Michiharu Kihira, Hiroshi Omori
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Patent number: 5023300Abstract: A thermoplastic olefin comprising an alloy of an olefin copolymer elastomer and a propylene/comonomer random copolymer is provided. The comonomer is selected from one or more of ethylene and C.sub.4 to C.sub.10 alpha-olefins. Polypropylene is an optional component of the alloy. The alloy may be produced by melt blending, reactor blending or a combination thereof, of the various components.Type: GrantFiled: May 23, 1989Date of Patent: June 11, 1991Assignee: Exxon Chemical Patents Inc.Inventors: Terrence Huff, James J. McAlpin
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Patent number: 5019627Abstract: An injection-molding polyethylene composition consisting essentially of ultrahigh-molecular-weight polyethylene having a molecular weight of at least about 1,650,000 and low-molecular-weight to high-molecular-weight polyethylene having a molecular weight of, for example, about 1500 to about 360,000. This composition is produced by a multistep polymerization process comprising a step of producing the ultrahigh-molecular-weight polyethylene and a step of producing the low-molecular-weight or high-molecular-weight polyethylene.Type: GrantFiled: December 11, 1989Date of Patent: May 28, 1991Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Shiro Honma, Kenichi Tominari, Masayoshi Kurisu
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Patent number: 4990571Abstract: Composite resin particles each comprising a particulate crosslinked polymer to which a number of substantially linear, metal-containing polymer chains are chemically bonded. The invention also provide methods for the preparation of said composite resin particles. The present composite resin particles have self-film forming properties, can give a stable dispersion in an organic solvent or a resinous varnish and are specifically useful in paint industries. The particles are further characterized by having the desired properties of the metal element contained therein, as, for example, self-catalytic function in crosslinking, excellent biological activities and the like.Type: GrantFiled: March 13, 1989Date of Patent: February 5, 1991Assignee: Nippon Paint Co., Ltd.Inventors: Tadafumi Miyazono, Akio Kashihara, Shinichi Ishikura
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Patent number: 4990572Abstract: Composite resin particles each comprising a particulate crosslinked polymer to which a number of substantially linear, metal-containing polymer chains are chemically bonded. The invention also provide methods for the preparation of said composite resin particles. The present composite resin particles have self-film forming properties, can give a stable dispersion in an organic solvent or a resinous varnish and are specifically useful in paint industries. The particles are further characterized by having the desired properties of the metal element contained therein, as, for example, self-catalytic function in crosslinking, excellent biological activities and the like.Type: GrantFiled: March 13, 1989Date of Patent: February 5, 1991Assignee: Nippon Paint Co., Ltd.Inventors: Tadafumi Miyazono, Akio Kashihara, Shinichi Ishikura
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Patent number: 4980415Abstract: Compositions comprising polyphenylene ether copolymers are prepared by blending, preferably in the melt, a functionalized polyphenylene ether with a graft polymer, which is in turn prepared by the free radical reaction of a base polymer such as polyethylene or polypropylene with an olefinic compound containing a tertiary alkyl ester group, which may be a simple carboxylic acid or a carbamic acid ester group. The t-butyl groups are removed by thermal degradation under the reaction conditions to yield a carboxylic acid- or amino-functionalized graft polymer which reacts with the polyphenylene ether.Type: GrantFiled: May 1, 1989Date of Patent: December 25, 1990Assignee: General Electric CompanyInventor: John R. Campbell
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Patent number: 4975485Abstract: Ethylene is polymerized, optionally with a small amount of an .alpha.-olefin, in the presence of a Ziegler catalyst in multiple stages by using a polymerization apparatus including at least three polymerization reactors. In the polymerization process, the following three ethylene polymer components U, H and L are prepared sequentially in an optional order; a component U having an .alpha.-olefin content .alpha..sub.U of 0.1-10 wt. % and an intrinsic viscosity [.eta.].sub.U satisfying 2.times.[.eta.].sub.W .ltoreq.[.eta.].sub.U .ltoreq.5.times.[.eta.].sub.W in which [.eta.].sub.W is the intrinsic viscosity of the entire ethylene polymer, the ratio R.sub.U of component U in the entire ethylene polymer satisfying 0.3.times.[.eta.].sub.W .ltoreq.[.eta.].sub.U .times.R.sub.U .ltoreq.0.8.times.[.eta.].sub.W ; a component H having an .alpha.-olefin content .alpha..sub.H of up to 20 wt. % and an intrinsic viscosity [.eta.].sub.H satisfying ([.eta.].sub.W).sup.1/2 .ltoreq.[.eta.].sub.H .ltoreq.1.5.times. [.eta.].sub.Type: GrantFiled: January 19, 1989Date of Patent: December 4, 1990Assignee: Tosoh CorporationInventors: Morihiko Sato, Kaname Ohashi, Keiji Sugihara
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Patent number: 4966946Abstract: A block copolymer of polyalkylene and halogenated polystyrene comprises the formula:S'--A--(A--S').sub.min which m is 0, 1, 2, 3 or 4, A is a saturated polyalkylene, and S' is a nuclear brominated polystyrene having from about 0.5 to about 5 bromines per styrene unit. The polystyrene blocks are substantially free of halogen other than bromine and chlorine, and the polyalkylene is substantially free of halogen. The compositions retain the elastomeric properties of the non-halogenated form of the compounds while having significantly reduced flammability.Type: GrantFiled: February 2, 1990Date of Patent: October 30, 1990Assignee: Great Lakes Chemical CorporationInventors: Nicolai A. Favstritsky, Rastko I. Mamuzic
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Patent number: 4933393Abstract: An injection-molding polyolefin composition suitable for obtaining an injection-molded article having excellent sliding property and excellent impact resistance and being free from delamination, said polyolefin composition being characterized in that(1) the composition consists substantially of an ultrahigh-molecular-weight polyolefin having an intrinsic viscosity of 10-40 dl/g as measured in decalin of 135.degree. C. and a low-molecular-weight to high-molecular-weight polyolefin having an intrinsic viscosity of 0.1-5 dl/g as measured in decalin of 135.degree. C.,(2) the ultrahigh-molecular-weight polyolefin is contained in the composition in an amount of 10-40% by weight based on the total weight of the ultrahigh-molecular-weight polyolefin and the low-molecular-weight to high-molecular-weight polyolefin,(3) the composition has an intrinsic viscosity [.eta.]c of 3.5-15 dl/g as measured in decalin of 135.degree. C.,(4) the composition has a melt torque T of 4.5 kg.Type: GrantFiled: November 10, 1988Date of Patent: June 12, 1990Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Akinori Toyota, Mamoru Kioka, Takeshi Shiraki, Kunie Hiroshige
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Patent number: 4882406Abstract: Nodular copolymer and method of preparing a nodular copolymer by preparing a copolymer chain and coupling it with a coupling agent. The copolymers which form the nodular copolymer are formed of first and second segments, of which the second segments, containing the coupling agent, react to form the nodular region. The nodular copolymer is particularly useful as a lube oil additive.Type: GrantFiled: March 5, 1986Date of Patent: November 21, 1989Assignee: Exxon Research & Engineering CompanyInventors: Charles Cozewith, Shiaw Ju, Gary W. Verstrate
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Patent number: 4814388Abstract: A rubber-modified thermoplastic resin composition obtained by copolymerizing an aromatic vinyl compound and optionally other monomers copolymerizable therewith in the presence of an ethylene-.alpha.-olefin type rubbery polymer having a molecular weight distribution parameter Mw/Mn of 1.2 to 4.5. Said polymer preferably has Mooney viscosity (ML.sub.1+4, 100.degree. C.) of 40 or less. Said composition is excellent not only in weather resistance and impact resistance but also in rigidity, surface gloss and molded product appearance.Type: GrantFiled: February 13, 1986Date of Patent: March 21, 1989Assignee: Japan Synthetic Rubber Co., Ltd.Inventors: Hisao Nagai, Yuzi Nakagawa, Katsurou Oomura, Shinichi Kimura
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Patent number: 4810612Abstract: A heat-fixable electrophotographic toner composition comprising(A) a graft modified polyolefin composed of 100 parts by weight of a polyolefin having an intrinsic viscosity, measured in decalin at 135.degree. C., of from 0.04 to 1.2 dl/g, and grafted thereto a monomer selected from the group consisting of (a) 1.0 to 100 parts by weight of acrylonitrile or methacrylonitrile, (b) 3 to 200 parts by weight of an aromatic carboxylic acid vinyl ester and (c) 2 to 43 parts by weight of an unsaturated carboxylic acid ester, and(B) a coloring agent.Type: GrantFiled: June 8, 1988Date of Patent: March 7, 1989Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Takashi Ueda, Toshihiro Sagane
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Patent number: 4806581Abstract: 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: GrantFiled: March 10, 1987Date of Patent: February 21, 1989Assignee: Occidental Chemical CorporationInventor: Leigh E. Walker
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Patent number: 4786687Abstract: A molding composition is disclosed which comprises ultrahigh molecular weight polyethylene having an intrinsic viscosity of 10-30 dl/g at 135.degree. C. in decalin. Improved injection moldability is provided by the use of such polyethylene obtainable by a multi-stage polymerization reaction including at least the following two stages: (a) a first stage in which ethylene is polymerized using a specified composite catalyst in the absence of hydrogen of its presence at lower concentration to produce 50-99.5 weight parts of polyethylene having an intrinsic viscosity of 12-32 dl/g at 135.degree. C. in decalin; and (b) a second stage in which a fresh feed of ethylene is polymerized in the presence of hydrogen at higher concentration to produce 50-0.5 weight parts of polyethylene having an intrinsic viscosity of 0.1-5 dl/g at 135.degree. C. in decalin.Type: GrantFiled: April 21, 1986Date of Patent: November 22, 1988Assignee: Nippon Oil Co., Ltd.Inventors: Akira Sano, Masataka Oka, Tetsujirou Kuroishi, Kazuo Matsuura
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Patent number: 4786689Abstract: A process is provided for metallating ethylene polymers which have polymerized therein a minor amount of nonconjugated diene. Metallation is accomplished with a blend of three metallating reagents: (a) an alkyllithium compound; (b) a potassium alkoxide; and (c) a chelating tertiary diamine. The metallated polymers so prepared may be reacted with one or more anionically polymerizable monomers to form graft polymers or with a reagent such as carbon dioxide to form a functionalized polymer. When the anionically polymerizable monomer has two or more polymerizable sites, the metallated polymer is reacted with a modifying compound such as alpha-methylstyrene before it is reacted with the monomer(s). Certain of the graft polymers behave as thermoplastic elastomers whereas others are thermoplastic. The blend of metallating reagents may be used with any polymer having partial or complete unsaturation.Type: GrantFiled: October 16, 1987Date of Patent: November 22, 1988Assignee: The Dow Chemical CompanyInventors: Gary K. Lund, Raymond L. Laakso, Jr., Calvin P. Esneault, Brian W. Walther
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Patent number: 4774280Abstract: New resins based on oxidized polyethylene, which are thermoplastic or thermosetting, soluble in solvents and/or aqueous media, are characterized in that they consist essentially of grafted polyethylene obtained by preparing a dispersion of a molten oxidized polyethylene in an organic solvent medium at a temperature above the softening range of the oxidized polyethylene. The oxidized polyethylene is employed in a proportion of 0.5 to 30% by weight of the resin and has a weight average molecular weight of between 900 and 25,000 and also contains side groups ending in functional groups capable of giving rise to free radicals. The dispersion is polymerized with a mixture of catalyzed monomers consisting essentially of acrylic and/or methacrylic monomers, in a proportion of 70 to 99.5% by weight based on the resin, the mixture being added gradually during the reaction.The resins according to the invention can be employed as a binder for coatings in paints, varnishes, glues, inks, adhesives and sealants.Type: GrantFiled: April 22, 1987Date of Patent: September 27, 1988Assignee: NorsolorInventors: Remi Hauschild, Jean Aubry, Adrien Nicco
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Patent number: 4762893Abstract: Block copolymers of ethylene and/or alpha-olefins, in particular propylene, with vinyl aromatic monomers, comprising at least two polymeric blocks, one of which being a polyolefinic block and the other having a stereoregular structure and being formed by vinyl aromatic monomer units.Type: GrantFiled: December 23, 1985Date of Patent: August 9, 1988Assignee: Montedison S.p.A.Inventors: Roberto Nocci, Giancarlo Attalla, Luciano Del Giudice, Robert E. Cohen, Floriana Bertinotti
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Patent number: 4666987Abstract: A process for in mold polymerization and a composition for use therein comprising a polymerizable vinyl aromatic monomer and a particulated, semicrystalline nonmiscible polymer.Type: GrantFiled: February 22, 1985Date of Patent: May 19, 1987Assignee: The Dow Chemical CompanyInventors: Alan F. Burmester, John S. Trent
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Patent number: 4659785Abstract: A hot-melt adhesive composition comprising a styrene-type hydrocarbon-modified polyolefin (c) composed of 100 parts by weight of a crystalline polyolefin (a) having a degree of crystallinity of at least 10% and 0.15 to 50 parts by weight of a styrene-type hydrocarbon (b) bound thereto by great-copolymerization, said modified polyolefin (c) having an intrinsic viscosity [.eta.] of 0.5 to 5 dl/g, a degree of crystallinity of at least 10% and a weight average molecular weight Mw/number average molecular weight Mn ratio of from 1 to 15; and use of the aforesaid composition as an intermediate adhesive layer in laminating two polymers.Type: GrantFiled: August 13, 1985Date of Patent: April 21, 1987Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Riichiro Nagano, Toshihiro Sagane
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Patent number: 4652511Abstract: 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: GrantFiled: April 19, 1985Date of Patent: March 24, 1987Assignee: Fujikura Kasei Co., Ltd.Inventors: Hikoji Ueda, Akira Otsu, Kenji Sano, Katuyuki Takano
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Patent number: 4632942Abstract: A resin composition for a masterbatch of foaming agent, comprising:(A) 100 parts by weight of a resin component comprising(i) 100 to 20% by weight of a modified resin having an aromatic vinyl monomer unit content of 5 to 70% by weight, the aromatic vinyl monomer unit being obtained by subjecting an ethylene polymer resin or propylene polymer resin and an aromatic vinyl monomer to graft polymerization, and(ii) 0 to 80% by weight of an ethylene polymer resin or propylene polymer resin, and(B) 1 to 50 parts by weight of a chemical foaming agent.Type: GrantFiled: October 19, 1984Date of Patent: December 30, 1986Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Ryouichi Ito, Yoshihiro Banno, Tetsuji Kakizaki
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Patent number: 4624992Abstract: Ethylenically unsaturated monomers are grafted on homo- and olefinic co-polymers by means of a radicalic reaction, operating at between 60.degree. C. and 160.degree. C., in a solution of the polymer in a solving medium consisting of, or predominantly comprising a mixture of a component (A), chosen between aliphatic hydrocarbons, aromatic hydrocarbons, esters and ethers containing at least one aromatic or cycloaliphatic group, with a component (B) consisting of an aliphatic, cycloaliphatic or aromatic ketone, and by separating at the end of the reaction the grafted polymer, by means of the cooling down of the solution to a temperature below 40.degree. C.Type: GrantFiled: January 6, 1986Date of Patent: November 25, 1986Assignee: Ausimont S.p.A.Inventors: Federico Milani, Marco Binaghi
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Patent number: 4613652Abstract: A curable resin composition which comprises (1) a copolymer composed of an aminoalkyl acrylate and/or aminoalkyl methacrylate and an ethylenically unsaturated monomer being formulated with (2) a compound having at least two acryloyl groups in the molecule.The composition can be cured at low temperatures in the range of ordinary temperature to 120.degree. C., and therefore advantageously used for the formation of coating films in the application fields, such as plastics, wood and concrete, where heat treatment cannot be performed. Also, the composition which exhibits excellent adherence toward various kinds of substrates can be used as adhesives and different kinds of primers, as well. Furthermore, the composition can provide coating films that excel in terms of water resistance, weathering resistance and solvent resistance, and therefore be utilized for overpaints, etc.Type: GrantFiled: June 7, 1985Date of Patent: September 23, 1986Assignee: Takeda Chemical Industries, Inc.Inventors: Takeo Nakayama, Kimiya Fujinami, Takurou Sakamoto, Fumihiro Doura
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Patent number: 4605704Abstract: 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 abut 20 weight percent, the resulting product can be formed to a transparent or translucent article.Type: GrantFiled: October 12, 1983Date of Patent: August 12, 1986Assignee: Occidental Chemical CorporationInventors: David W. Eastman, Leigh E. Walker
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Patent number: 4544709Abstract: Chlorosulfonated polyethylene having excellent properties as elastomer is produced by dissolving polyethylene in a mixed solvent of carbon tetrachloride and a halogenated aromatic compound such as, for example, chlorobenzene and reacting polyethylene with chlorine and sulfuryl chloride or with sulfuryl chloride.Type: GrantFiled: February 13, 1984Date of Patent: October 1, 1985Assignee: Toyo Soda Manufacturing Co., Ltd.Inventors: Mamoru Narui, Tatsushi Nakagawa, Yasuhiro Sakanaka
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Patent number: 4536545Abstract: Graft polymers are prepared by reacting an ethylenically unsaturated polymerizable monomer with a polymer of an olefin of 2 to about 8 carbon atoms in a process wherein the olefin polymer is substantially insoluble in the monomer but is capable of absorbing the monomer. In a preferred aspect, a vinyl halide polyolefin graft polymer is produced by reacting a solid polyolefin particle with a vinyl halide monomer in which the polyolefin is substantially insoluble, but is capable of absorbing the monomer. The solid particles can be contacted with the monomer in one step or in stages. When the stage-wise reaction is contined until the proportion of polyolefin in the polymer product is about 2 to about 20 weight percent, the resulting product can be formed to a transparent or translucent article.Type: GrantFiled: October 12, 1983Date of Patent: August 20, 1985Assignee: Occidental Chemical CorporationInventors: Joel L. Olener, Leigh E. Walker
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Patent number: 4490508Abstract: A graft-modified copolymer having a melt flow rate of 0.01 to 100 g/10 min at a temperature of 230.degree. C. under a load of 2160 g. The graft-modified copolymer is prepared by grafting (a) 100 parts by weight of low crystalline or amorphous ethylene-alpha-olefin copolymer having an ethylene content of 40 to 93 mole%, a melt flow rate of 0.1 to 50 g/10 min at a temperature of 230.degree. C. under a load of 2160 g, and a density of 0.90 g/cm.sup.3 or less with (b) 0.3 to 50 parts by weight of a styrene-type hydrocarbon. This graft-modified copolymer is suitable for use as a compounding agent for improving the impact resistance of styrene-type polymers without decreasing the surface hardness, weathering resistance, and molding properties thereof.Type: GrantFiled: March 30, 1983Date of Patent: December 25, 1984Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Riichiro Nagano, Toshihiro Sagane
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Patent number: 4486559Abstract: Herein disclosed are a toner composition for the development of electrostatic latent images which comprises a polymer obtained by polymerizing a polymerizable monomer or monomers in the presence of a chlorinated polyolefin, and a method for preparing the same.Type: GrantFiled: June 23, 1981Date of Patent: December 4, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Hideki Murata, Sadatugu Terada, Kiyoshi Tamaki, Tsuneo Wada, Akitoshi Matsubara, Hiroyuki Takagiwa
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Patent number: 4485215Abstract: Interpolymers resulting from the polymerization of a vinyl/aromatic monomer such as styrene, an olefinic nitrile such as acrylonitrile and a maleimide in the presence of both an ethylene propylene-diene terpolymer (EPDM) and an ethylene-acrylate copolymer and to molded products produced therefrom are described.Type: GrantFiled: May 11, 1983Date of Patent: November 27, 1984Assignee: Atlantic Richfield CompanyInventor: Barry D. Dean
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Patent number: 4483965Abstract: A stretched film having excellent printing and writing properties and mechanical strength is produced by stretching a film molded from a styrene-grafted polyolefin resin in at least one direction. The styrene-grafted polyolefin resin is produced by heating an aqueous suspension containing 100 parts by weight of polyolefin resin particles, from 10 to 400 parts by weight of a styrene monomer, and a free radical polymerization initiator in an amount of from 0.01 to 1 part by weight per 100 parts by weight of the styrene monomer.Type: GrantFiled: April 12, 1983Date of Patent: November 20, 1984Assignees: Mitsubishi Petrochemical Co., Ltd., Oji Yuka Goseishi Co., Ltd.Inventors: Yozo Ohba, Takashi Toyoda, Masaaki Yamanaka, Fukashi Hashimoto, Tetsuji Kakizaki
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Patent number: 4481336Abstract: A block copolymer comprising 60 to 95 parts by weight of a binary or tertiary random copolymer block A comprising propylene, ethylene and/or butene-1 and 5 to 40 parts by weight of a binary or tertiary random copolymer block B comprising butene-1, propylene and, optionally, ethylene. This block copolymer can be shaped into a film having excellent heat sealability, transparency and blocking resistance.Type: GrantFiled: March 18, 1983Date of Patent: November 6, 1984Assignee: Mitsubishi Petrochemical Company LimitedInventors: Masaki Fujii, Mitsutaka Miyabayashi
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Patent number: 4480075Abstract: Block copolymers are prepared by using two successive and different catalytic processes, a Ziegler-Natta type polymerization followed by a conventional anionic polymerization.Type: GrantFiled: June 24, 1983Date of Patent: October 30, 1984Assignee: Shell Oil CompanyInventor: Carl L. Willis
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Patent number: 4473687Abstract: A polypropylene molding composition of polypropylene, ethylene-propylene copolymer and polyethylene having a high hardness and increased impact strength and homogeneity after processing is obtained by way of a continuous three-stage polymerization, when the melt viscosities of the polymer mixtures obtained in the individual stages are in a determined ratio of one to the other.Type: GrantFiled: August 27, 1982Date of Patent: September 25, 1984Assignee: Hoechst AktiengesellschaftInventors: Bernhard Dorrer, Friedrich Kloos, Horst Neumann, Helmut Strametz
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Patent number: 4442261Abstract: The method and production of macromolecular monomers from cationically polymerizable monomers and vinyl-substituted hydrocarbon halides is disclosed. These cationically polymerizable monomers may react in the presence of a catalyst with the hydrocarbon halide to produce a macromer retaining a polymerizable headgroup. This compound may be used in a variety of copolymerization processes with a variety of copolymerizable monomers to form graft copolymers.Type: GrantFiled: January 11, 1982Date of Patent: April 10, 1984Assignee: The University of AkronInventors: Joseph P. Kennedy, Kurt C. Frisch, Jr.
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Patent number: 4430477Abstract: A propylene composition having a notably improved high-impact strength and elongation at break, with a relatively slight reduction in rigidity is provided, which composition is a high-impact polypropylene composition comprising 60 to 95 parts by weight of polypropylene and 40 to 5 parts by weight of a chlorinated polyolefin having styrene graft-polymerized thereon.Type: GrantFiled: May 26, 1983Date of Patent: February 7, 1984Assignee: Chisso CorporationInventor: Kohichi Kunimune
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Patent number: 4426480Abstract: Organo siloxanes which, in conjunction with organic peroxides, serve as vulcanizing or crosslinking agents for polymers, prepared by reacting a fatty alcohol, water and methylvinyldichlorosilane or a mixture of methylvinyldichlorosilane and dimethyldichlorosilane.Type: GrantFiled: February 17, 1983Date of Patent: January 17, 1984Assignee: Union Carbide CorporationInventor: Herbert E. Petty
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Patent number: 4342844Abstract: A process for the preparation of an organic peroxide master batch comprising about 20-60% by weight of an organic peroxide and about 40-80% by weight of a polymer capable of being cross-linked by the peroxide, is disclosed. The process comprises contacting particles of such a polymer, having a diameter from about 200 microns to about 20 millimeters, at a temperature from about 15.degree. C. to about 95.degree. C.Type: GrantFiled: December 4, 1980Date of Patent: August 3, 1982Assignee: Akzona IncorporatedInventors: Reinder Torenbeek, Jan D. van Drumpt, Gerrit F. Drost
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Patent number: 4337297Abstract: Blends of thermoplastic polymers which may be coextruded to form bonding layers in film laminates contain (a) a copolymer of ethylene with a lower alkyl acrylate or methacrylate or vinyl acetate, (b) a chlorinated ethylene polymer and optionally (c) a tackifying resin.Type: GrantFiled: July 16, 1981Date of Patent: June 29, 1982Assignee: Gulf Oil CorporationInventors: Khalid A. Karim, James H. Rea
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Patent number: 4299931Abstract: Compatibilized polymer blends are described comprising a blend of olefin polymer, nitrile rubber, and a compatibilizing amount of block copolymer comprising nitrile rubber compatibilizing segments and olefin polymer compatibilizing segments.Type: GrantFiled: March 10, 1980Date of Patent: November 10, 1981Assignee: Monsanto CompanyInventors: Aubert Y. Coran, Raman Patel
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Patent number: 4298713Abstract: A process for producing an ethylene copolymer having a density of from 0.900 to 0.945 g/cm.sup.3 by copolymerizing in two steps a predominant amount of ethylene with a minor amount of an alpha-olefin containing at least 3 carbon atoms at room temperature to not more than about 100.degree. C. under a pressure of about 1 to about 100 kg/cm.sup.2 in the presence of a catalyst composed of (A) a titanium catalyst component supported on a magnesium compound and (B) an organoaluminum compound; characterized in that said copolymerization is carried out in(i) a first step where about 0.01 to about 50 g, per gram of the titanium catalyst component (A), of the alpha-olefin containing at least 3 carbon atoms is polymerized, said catalyst further comprising an organic acid ester (C), and then(ii) a second step where the final product of ethylene copolymer is formed in an amount more than about 100 times the weight of the polymer formed in the first step.Type: GrantFiled: December 26, 1979Date of Patent: November 3, 1981Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Yoshinori Morita, Akinori Toyota, Norio Kashiwa
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Patent number: 4260690Abstract: The toughness of thermoplastic polyesters can essentially be improved by addition of a new type of graft polymers which contain one grafting site for about 400 to 2000 carbon atoms, the average molecular weight M.sub.w of the graft branches being from 2000 to 40,000.Type: GrantFiled: January 18, 1980Date of Patent: April 7, 1981Assignee: Bayer AktiengesellschaftInventors: Rudolf Binsack, Dieter Rempel, Helmut Korber, Dieter Neuray
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Patent number: 4212958Abstract: Graft polyblends prepared by polymerizing acrylate ester monomers or mixtures of acrylate ester monomers and vinyl aromatic monomers in the presence of a rubbery saturated hydrocarbon polymer substrate are useful as modifiers for PVC, imparting improved flow and impact properties to PVC formulations when employed at low levels. The rubbery saturated hydrocarbon substrates useful for these purposes include mono-olefin polymers such as polyisobutylene, rubbery copolymers such as EPR, and rubbery hydrogenated polymers and copolymers of conjugated dienes.Type: GrantFiled: August 10, 1978Date of Patent: July 15, 1980Assignee: Borg-Warner CorporationInventor: John C. Falk
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Patent number: 4199638Abstract: An article of manufacture and a method of making same, the invention provides a sheet-like article formed of a mixture of high density and low density polyethylene, the ratio of high density to low density polyethylene being 3:1. The present article combines desired characteristics of flexibility, strength, inter alia and can be readily die cut and printed upon after extrusion from a melt.Type: GrantFiled: November 3, 1977Date of Patent: April 22, 1980Inventor: Raymond J. McKee
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Patent number: 4163033Abstract: An improved vinyl halide or vinyl halide copolymer containing up to 50 percent of a comonomer can be obtained by polymerizing in contact with an aliphatic hydrocarbon olefin homopolymer, copolymer or terpolymer in a process of bulk polymerization comprising single stage or two-stage bulk polymerization wherein high speed agitation is used during the first stage and low speed agitation is used in the second stage. By polymerizing in the presence of the olefin polymer or copolymer, reduced particle size, reduced lump formation, and lower melt viscosity and improved impact strength can be obtained in the resin product. Small amounts of the olefin polymer or copolymer are effective in providing particle size control, reducing lump formation and eliminating scale build-up. Larger amounts of olefin polymer increase impact strength, reduce melt viscosity and provide excellent mold release properties in the final product.Type: GrantFiled: November 30, 1976Date of Patent: July 31, 1979Assignee: Hooker Chemicals & Plastics Corp.Inventor: Akio Takahashi