Solid Polymer Other Than Graft Or Graft-type Derived From Nonaromatic Plural Ethylenically Unsaturated Reactant Patents (Class 525/87)
-
Patent number: 5262484Abstract: Graft copolymers and processes for the preparation thereof are provided. The copolymers comprise a base polymer having grafted thereto a monomeric 2-alkenyl azlactone. The surface properties of the graft copolymers can be modified by binding thereto nucleophilic reagents comprising further functional groups with desired properties. Further, the amount of azlactone available at the surface of a graft copolymer for binding to such nucleophilic reagents can be controlled by selecting a surface against which the graft copolymer is formed. The graft copolymers exhibit desirable thermoplastic, melt flow, and adhesion properties and are particularly useful for immobilizing proteins. Methods of immunoassay based on the immobilization of proteins are also disclosed. Another utility of the graft copolymers involves the compatibilizing of immiscible polymer blends.Type: GrantFiled: September 9, 1992Date of Patent: November 16, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Patrick L. Coleman, Thomas A. Kotnour, Richard J. Rolando
-
Patent number: 5252664Abstract: Tough transparent thermoplastics blends may be prepared by blending 10 to 99 weight percent of a block copolymer; 0.1 to 1 weight percent of particulate rubber having a particle size from 0.1 to 10 microns; and the balance a clear glassy polymer. These clear polymers are useful in a number of applications, particularly for those applications requiring quite high toughness and transparency such as packaging, containers or protective covering.Type: GrantFiled: June 27, 1991Date of Patent: October 12, 1993Assignee: Polysar LimitedInventors: Ronald J. Thompson, James Lunt, John C. Lamont, John C. Kwok
-
Patent number: 5242727Abstract: A cured adhesive tape composition for adhering together roofing materials such as synthetic EPDM rubber and which provides long term water tightness is provided. The adhesive composition includes substantially equal amounts by weight of a) a rubbery polymer comprising a blend of an ethylene-propylenediene terpolymer, a halogenated butyl rubber or a halogenated copolymer of p-methylstyrene and isobutylene, and polyisobutylene b) a compatible tackifier, and c) an accelerator/cure package for the rubbery polymer. The cured composition exhibits a peel strength of at least 715 grams/cm at room temperature, at least 300 grams/cm at 70.degree. C., and supports a static load of at least 300 grams at 70.degree. C.Type: GrantFiled: November 15, 1991Date of Patent: September 7, 1993Assignee: Adco Products, Inc.Inventors: Brian J. Briddell, Michael J. Hubbard
-
Patent number: 5238719Abstract: A high nitrile thermoplastic resin composition having fluorinated/chlorinated hydrocarbon resistance and comprising a specifically defined graft copolymer obtained by polymerizing a vinyl cyanide compound and an aromatic vinyl compound in the presence of a conjugated diene-based synthetic rubber, or a blend of it and a vinyl cyanide compound/aromatic vinyl compound copolymer, and its use as a fluorinated/chlorinated hydrocarbon-resistant internal box of a refrigerator.Type: GrantFiled: September 25, 1992Date of Patent: August 24, 1993Assignee: Monsanto Kasei CompanyInventors: Ryuji Kamoshita, Hiroki Kashiwagi, Koji Takimoto
-
Patent number: 5216076Abstract: A grafted copolymer containing low cis-polybutadiene having a Mooney viscosity of 30 to 40 as a rubber component, and 30% by volume or more of particles of said rubber component becoming non-spherical rubber particles when molded into a molded article, is suitable for use as a low gloss agent which is usable in the fields of internal and external automotive trims, exterior parts of household electric appliances, etc.Type: GrantFiled: October 15, 1991Date of Patent: June 1, 1993Assignee: Hitachi Chemical CompanyInventors: Seizou Mishima, Kiyotaka Mashita, Kazuyoshi Shike, Jun Matsuzawa, Masashi Shitara, Isamu Hattori
-
Patent number: 5212227Abstract: There is provided a thermoplastic resin composition which comprises 99 to 1% by weight of a propylene polymer (I), 1 to 99% by weight of a vinyl polymer (II), 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 (III) which is a graft copolymer comprising 5 to 95% by weight of a propylene polymer and 95 to 5% by weight of a vinyl polymer or copolymer obtained from at least one kind of vinyl monomer, either of the components being formed with a dispersion phase having a particle diameter of 0.001 to 10 .mu.m.Type: GrantFiled: December 20, 1990Date of Patent: May 18, 1993Assignees: Nippon Petrochemicals Co., Ltd., Nippon Oil & Fat Co., Ltd.Inventors: Suehiro Sakazume, Yuichi Orikasa
-
Patent number: 5180779Abstract: A high nitrile thermoplastic resin composition having fluorinated/chlorinated hydrocarbon resistance and comprising a specifically defined graft copolymer obtained by polymerizing a vinyl cyanide compound and an aromatic vinyl compound in the presence of a conjugated diene-based synthetic rubber, or a blend of it and a vinyl cyanide compound/aromatic vinyl compound copolymer, and its use as a fluorinated/chlorinated hydrocarbon-resistant internal box of a refrigerator.Type: GrantFiled: December 20, 1990Date of Patent: January 19, 1993Assignee: Monsanto Kasei CompanyInventors: Ryuji Kamoshita, Hiroki Kashiwagi, Koji Takimoto
-
Patent number: 5164454Abstract: An ethylene graft copolymer is disclosed, which is obtained by radical polymerizing a monomer composition comprising (A) from 50 to 99.95% by weight of ethylene, (B) from 0.05 to 50% by weight of a macromonomer having a number average molecular weight of from 2,000 to 20,000 and having a (meth)acryloyl group only at one terminal of the molecular chain thereof, and (C) 0 to 49.95% by weight of other radical polymerizable monomer(s). The ethylene graft copolymer is a modifier for improving impact resistance of engineering plastics or a compatibilizer for engineering plastics to provide a molding resin composition excellent in impact resistance and oil resistance. The ethylene graft copolymer is also useful as a hot-melt adhesive or a pressure-sensitive adhesive.Type: GrantFiled: July 9, 1990Date of Patent: November 17, 1992Assignees: Toagosei Chemical Industry Co., Ltd., Nippon Petrochemicals Co., Ltd.Inventors: Katsufumi Suga, Yoshihiro Yoshinaga, Hiroaki Yoshitomi, Takashi Tsuda, Shiro Kojima, Kishiro Azuma
-
Patent number: 5093418Abstract: A modified ethylenic random copolymer derived from 100 parts by weight of a base ethylenic random copolymer composed of 25 to 75 mole % of ethylene and 75 to 25 mole % of an alpha-olefin having 3 to 20 carbon atoms and grafted thereto, (a) 0.2 to 50 parts by weight of an unsaturated carboxylic acid having 3 to 10 carbon atoms or an anhydride or ester thereof, (b) 0.2 to 200 parts by weight of a styrene-type hydrocarbon having 8 to 12 carbon atoms, or (c) 0.2 to 300 parts by weight of an unsaturated silane compound having 2 to 20 carbon atoms, said modified ethylenic random copolymer having an intrinsic viscosity [.eta.], measured in decalin at 135.degree. C., of 0.01 to 1.5 dl/g and a molecular weight distribution (Mw/Mn), measured by gel permeation chromatography, of not more than 4.Type: GrantFiled: December 18, 1989Date of Patent: March 3, 1992Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Tatsuo Kinoshita, Syuji Minami
-
Patent number: 5081193Abstract: A grafted copolymer containing low cis-polybutadiene having a Mooney viscosity of 30 to 40 as a rubber component, and 30% by volume or more of particles of said rubber component becoming non-spherical rubber particles when molded into a molded article, is suitable for use as a low gloss agent which is usable in the fields of internal and external automotive trims, exterior parts of household electric applicances, etc.Type: GrantFiled: January 22, 1990Date of Patent: January 14, 1992Assignee: Hitachi Chemical Company Ltd.Inventors: Seizou Mishima, Kiyotaka Mashita, Kazuyoshi Shike, Jun Matsuzawa, Masashi Shitara, Isamu Hattori
-
Patent number: 5071913Abstract: A substantially gel free C.sub.4 to C.sub.7 isoolefin homopolymer rubber, butyl copolymer rubber, halogenated butyl rubber (e.g., chlorinated or brominated), or mixtures thereof, comprising a molecular weight distribution such that the ratio of the moments of said molecular weight distribution, Mz/Mw, is equal to or exceeds 2.0, and that portion of said molecular weight distribution which is equal to and greater than 4 times the peak molecular weight, Mp, comprises greater than 8 percent of the total polymer species, and Mp is greater than about 250,000 and wherein said polymer species of molecular weight less than Mp are substantially branch free. Various means are disclosed for effecting the molecular weight distribution including blending of homopolymers and/or copolymers of appropriate molecular weight and molecular weight distribution and direct polymerization using a functional reagent to introduce branching.Type: GrantFiled: December 11, 1987Date of Patent: December 10, 1991Assignee: Exxon Chemical Patents Inc.Inventors: Kenneth W. Powers, Hsien-Chang Wang, Debra C. Handy, James V. Fusco
-
Patent number: 4963613Abstract: 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: GrantFiled: July 7, 1989Date of Patent: October 16, 1990Assignee: Sumitomo Naugatuck Co., Ltd.Inventors: Yasushi Toyoda, Saburo Mishiba
-
Patent number: 4940747Abstract: Thermoplastic moulding materials, of vinyl chloride polymers, which contain a polymer, prepared in the presence of mercaptans, from styrene, .alpha.-methylstyrene, vinyltoluene, acrylonitrile, methyl methacrylate or mixtures thereof and which possess improved processing properties.Type: GrantFiled: November 17, 1986Date of Patent: July 10, 1990Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Christian Lindner, Karl-Heinz Ott, Hans-Eberhard Braese
-
Patent number: 4931504Abstract: The invention relates to thermoplastic compositions made up of:A. Polyphenylene ethers, in an amount of 15-95 wt. parts;B. Styrene resins, in an amount of 0 to 70 wt. parts;C. E-SBR rubbers, in an amount of 3-15 wt. parts;D. styrene-butadiene polymers prepared by emulsion polymerization (with Styrene incorporated in the copolymer in the amount og 3-15 wt. parts; andE. Optionally, other additives.The invention further relates to a method for preparing such thermoplastic compositions.Type: GrantFiled: March 20, 1987Date of Patent: June 5, 1990Assignee: Huls AktiengesellschaftInventors: Hans Jadamus, Wilfried Ribbing, Roland Feinauer
-
Patent number: 4889888Abstract: Elastoplastic compositions comprising a continuous crystalline polyolefin phase and at least two phases discretely dispersed in the polyolefin phase, one of which is a dynamically cured EPDM rubber and the other an amorphous and thermoplastic styrene polymer, in which at least 80% of the dispersed particles has a maximum size preferably below 5 .mu.m.The compositions are prepared by masticating a mixture of the components under conditions of dynamic curing of rubber.Type: GrantFiled: December 9, 1988Date of Patent: December 26, 1989Assignee: Himont IncorporatedInventors: Mauro Bassi, Enea Garagnani, Giuseppe Gorini
-
Patent number: 4877844Abstract: A process for producing a low gloss thermoplastic resin which comprises polymerizing in two steps from 20 to 70 parts by weight of a butadiene polymer, at least 70% by weight of which is constituted by butadiene, with from 30 to 80 parts by weight of a total of from 15 to 40% by weight of a vinyl cyanide monomer and from 60 to 85% by weight of an aromatic vinyl monomer, characterized in that for the polymerization of the first step, the butadiene polymer, the vinyl cyanide monomer and the aromatic vinyl monomer were charged in amounts corresponding to from 20 to 80% by weight of the entire butadiene polymer, from 20 to 80% by weight of the entire vinyl cyanide monomer and from 20 to 80% by weight of the entire aromatic vinyl monomer, respectively, and after the completion of the polymerization of the first step, the rest of the butadiene polymer, the vinyl cyanide monomer and the aromatic vinyl monomer were charged for the polymerization of the second step.Type: GrantFiled: December 21, 1987Date of Patent: October 31, 1989Assignee: Mitsubishi Rayon Company LimitedInventors: Kazuo Kishida, Yutaka Toyooka, Yoshiyuki Mikami
-
Patent number: 4824907Abstract: Moulded articles of uniform wall thickness are prepared by vacuum-forming or thermoforming a composition comprising a uniform blend of, as base resin, a moulding grade resin having a continuous phase of a first copolymer of a styrenic monomer and an ethylenically unsaturated nitrile and a minor proportion of, as additive resin, a second copolymer of a styrenic monomer and an ethylenically unsaturated nitrile having an ultra high molecular weight, the forming operation being carried out at least 50.degree. C. above the glass transition temperature of the base resin and at a stress level of at most 1 MPa.Type: GrantFiled: March 9, 1988Date of Patent: April 25, 1989Assignee: Borg-Warner Chemicals, Inc.Inventor: Harmen Z. K. Coster
-
Patent number: 4794143Abstract: This invention relates to a process to prepare impact resistant blends of chlorinated polyethylene and a styrenic polymer.Type: GrantFiled: March 24, 1988Date of Patent: December 27, 1988Assignee: Polysar LimitedInventor: Kam W. Ho
-
Patent number: 4778850Abstract: A: Thermoplastic moulding materials made from a vinyl chloride homopolymer or copolymer containing at least 50% by weight of vinyl choloride units,B: a graft polymer, prepared by graft polymerization ofB1: 50 to 85 parts by weight of a mixture of at least two of the monomers styrene, acrylonitrile, methyl methacrylate and .alpha.-methyl styrene onB2: 50 to 15 parts by weight of an at least partially crosslinked butadiene or acrylate rubber having average particle diameters of 0.08 to 1 .mu.Type: GrantFiled: June 22, 1987Date of Patent: October 18, 1988Assignee: Bayer AktiengessellschaftInventors: Christian Lindner, Hartmuth Buding, Hans-Eberhard Braese, Rudolf Casper, Karl-Heinz Ott
-
Patent number: 4703083Abstract: Compositions comprising 100 parts by weight high (>50 wt %) nitrile rubber graft copolymer and from 20 to 50 pbw nitrile rubber are thermoplastic elastomers. These elastomers exhibit improved abrasion resistance and compression set properties, and have good oil resistance.Type: GrantFiled: May 28, 1986Date of Patent: October 27, 1987Assignee: Borg-Warner Chemicals, Inc.Inventors: Claudio Giori, Stamatios G. Mylonakis
-
Patent number: 4703084Abstract: Compositions comprising a vinyl aromatic compound-acrylonitrile copolymer, a nitrile rubber and a graft copolymer thereof possess good rubbery characteristics and are processible as thermoplastics with low mold shrinkage.Type: GrantFiled: May 28, 1986Date of Patent: October 27, 1987Assignee: Borg-Warner Chemicals, Inc.Inventors: Claudio Giori, Stamatios G. Mylonakis
-
Patent number: 4687810Abstract: A rubber blend is produced by masticating a mixture of monoolefin copolymer rubber and high-diene hydrocarbon rubber while dynamically vulcanizing the monoolefin copolymer rubber. The blend is then further treated to vulcanize the high-diene hydrocarbon rubber portion. The resulting vulcanized blend has improved properties.Type: GrantFiled: January 2, 1986Date of Patent: August 18, 1987Assignee: Monsanto CompanyInventor: Aubert Y. Coran
-
Patent number: 4661549Abstract: 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: October 12, 1983Date of Patent: April 28, 1987Assignee: Occidental Chemical CorporationInventor: Leigh E. Walker
-
Patent number: 4594387Abstract: A thermoplastic resin composition having toughness, high thermal deformation resistance, and good flowability which comprises a copolymer of .alpha.-methylstyrene and acrylonitrile, and/or vinyl monomer; a copolymer of diene olefin rubber grafted with methacrylic alkyl ester, vinyl aromatic compound, and/or vinyl cyanide; and polycarbonate.Type: GrantFiled: November 2, 1983Date of Patent: June 10, 1986Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Eiichi Muramatsu, Sigemi Mathumoto, Fumiya Nagoshi
-
Patent number: 4520165Abstract: This invention relates to thermoplastic moulding compositions of the ABS-type produced in emulsion and having improved properties in relation to known ABS-moulding compositions, particularly extreme toughness coupled with ready processibility and high surface gloss.Type: GrantFiled: January 30, 1984Date of Patent: May 28, 1985Assignee: Bayer AktiengesellschaftInventors: Karl Zabrocki, Karl-Heinz Ott, Adolf Schmidt, Alfred Pischtschan
-
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
-
Patent number: 4461868Abstract: The present invention relates to mixtures comprising(a) thermoplastic aromatic polycarbonates having Mw (weight average molecular weight) of 10,000 to 200,000, preferably 20,000 to 80,000 (determined by measuring the relative viscosity .eta.rel in CH.sub.2 Cl.sub.2 at 25.degree. C. and a concentration of 0,5 g per 100 ml CH.sub.2 Cl.sub.2(b) thermoplastic polymers of C.sub.1 -C.sub.4 --alkyl methacrylates having Mw (weight average moleculr weight) of 10,000 to 1,000,000 (measured in dimethylformamide at 25.degree. C.) and(c) particulate graft polymers of methyl methacrylate onto a particulate, highly crosslinked alkyl acrylate-rubber which can optionally also contain a crosslinked diene rubber as an inner core, as well as to thermoplastic moulding compositions based on thermoplastic ABS resins or thermoplastic SAN resins which contain the three-component mixture (a)+(b)+(c).Type: GrantFiled: March 9, 1983Date of Patent: July 24, 1984Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Karl-Heinz Ott, Horst Peters, Josef Buekers, Dieter Neuray
-
Patent number: 4426483Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.Type: GrantFiled: May 11, 1982Date of Patent: January 17, 1984Assignee: Hercules IncorporatedInventors: William W. Maslanka, Gavin G. Spence
-
Patent number: 4397987Abstract: Oil resistant, ozone resistant polymer blends are prepared by blending an Acrylonitrile/Butadiene polymer with an EPDM polymer which has had grafted onto it a polymer prepared by polymerizing onto the backbone a methacrylate monomer. The preferred EPDM graft polymer is a methylmethacrylate grafted onto the EPDM backbone.Type: GrantFiled: September 23, 1982Date of Patent: August 9, 1983Assignee: Uniroyal, Inc.Inventor: Robert J. Cornell
-
Patent number: 4374952Abstract: A polymer composition comprising a blend of NBR elastomer with EPDM grafted with acrylonitrile or acrylonitrile copolymer, imparts oil and ozone resistance to the blend.Type: GrantFiled: July 14, 1980Date of Patent: February 22, 1983Assignee: Uniroyal, Inc.Inventors: Charles D. Shedd, Allen L. Stone
-
Patent number: 4353818Abstract: Disclosed are novel organic pigments adapted particularly for use as fillers for paper. The organic pigments are finely divided particles obtained by graft copolymerizing an ethylenically unsaturated monomer, such as styrene, onto a water-soluble cationic prepolymer in an aqueous solution and in the presence of a free-radical polymerization initiator.Type: GrantFiled: June 19, 1980Date of Patent: October 12, 1982Assignee: Hercules IncorporatedInventors: William W. Maslanka, Gavin G. Spence
-
Patent number: 4350795Abstract: Thermoplastic elastomer compositions of the present invention comprise a blend of from about 10 to about 50 parts by weight of a crystalline 1-olefin polymer, from about 80 to about 15 parts by weight of a styrene-butadiene rubber, and from about 5 to about 55 parts by weight of a highly saturated elastomer. The thermoplastic blends have very good physical properties, especially tear strength, tensile strength, elongation at break, low temperature impact resistance, minimum creep at high temperatures, and smooth surfaces when injection molded. The compositions, which may be partially cured, also have excellent aging properties, as well as paint adhesion. The compositions are a true thermoplastic in that they can be repeatedly processed and yet maintain their good physical properties.Type: GrantFiled: August 4, 1980Date of Patent: September 21, 1982Assignee: The Firestone Tire & Rubber CompanyInventors: Georg G. A. Bohm, Gary R. Hamed, Lee E. Vescelius
-
Patent number: 4285847Abstract: Increasing the solids content of an aqueous dispersoid of:(a) a resin having aliphatic backbone carbons;(b) addition polymer, and(c) graft polymer consisting of addition polymer grafted to the aliphatic carbon atoms of said resin;which comprises bringing together ethylenically unsaturated monomer, initiator, and such dispersoid, and polymerizing the such monomer in situ.Preferred products produced are water-reducible epoxy resin-based. These are produced by a process which comprises initiating addition polymerization of ethylenically unsaturated monomer in the presence of such dispersoid.Type: GrantFiled: April 11, 1979Date of Patent: August 25, 1981Assignee: SCM CorporationInventor: Vincent W. Ting
-
Patent number: 4277574Abstract: The present invention relates to a process for preparing ABS polyblends having an alkenyl aromaticalkenyl nitrile monomer matrix polymeric phase reinforced with rubber particles grafted with said monomers and having a bimodal rubber particle size distribution, the process comprising: charging continuously a formulation of said monomers having a soluble diene dissolved therein and a first grafted diene rubber particle dispersed therein to a back-mixed reaction zone operating at 50-80% steady state, flow-through, conversion of said monomer formulation, continuously mass polymerizing said charged monomer formulation to 50-80% conversion, forming and dispersing said soluble rubber as second grafted diene particles having a particle size larger than said first grafted rubber particles, continuously withdrawing an effluent from said reaction zone and separating said ABS polyblend from said effluent.Type: GrantFiled: November 19, 1979Date of Patent: July 7, 1981Assignee: Monsanto CompanyInventors: Michael B. Jastrzebski, Allen R. Padwa
-
Patent number: 4275178Abstract: Graft-copolymers for improving impact strength comprising a relatively large quantity of an elastomeric trunk polymer, such as acrylonitrile/styrene/butadiene resins and methyl methacrylate/styrene/butadiene resins, have some undesirable powder characteristics, for example, poor fluidity and an easily blocking property.However, by blending a graft-copolymer of this type with a graft-copolymer comprising a relatively small quantity of an elastomeric trunk polymer in slurry form or dry state, it is possible to obtain a graft-copolymer blend with improved powder characteristics without significantly lowering the effect of improving the impact strength of the former graft-copolymer.The graft-copolymer blend thus obtained, when blended with a hard resin such as polyvinyl chloride, provides a resin composition with high impact strength.Type: GrantFiled: December 28, 1979Date of Patent: June 23, 1981Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Haruhiko Yusa, Masanori Oota, Katsumi Suzuki
-
Patent number: 4267282Abstract: In the process of melting a blend of nitrile polymer and lubricous additive with a screw-plasticizing unit, the improvement which involves having an absorptive anti-slip agent such as rubber crumb in admixture with the blend when charging the plasticator to minimize feeding problems.Type: GrantFiled: September 18, 1978Date of Patent: May 12, 1981Assignee: Monsanto CompanyInventor: Edward F. Tokas
-
Patent number: 4255296Abstract: This invention relates to a composition comprising a polybutadiene rubber containing a polymer obtained by block or graft polymerization of cis-1,4-polybutadiene with syndiotactic (syn)-1,2-polybutadiene, alone or blended with the other diene rubber, said syn-1,2-polybutadiene being crystallized and in a short fiber-like shape, and a breaking resistance characteristic and reinforcement characteristic being considerably improved by specifying the diameter and length of said short fiber, which is suitable for various parts of tire or industrial materials, and further relates to a composition of said polybutadiene rubber to which a carbon black is added for preferably used as a chafer or tread of tire, and still further relates to said composition to which a carbon black and an antioxidant are added for preferably used as a rubber blend composition for side wall.Type: GrantFiled: November 28, 1978Date of Patent: March 10, 1981Assignee: Bridgestone Tire Company LimitedInventors: Masaki Ogawa, Tamio Araki
-
Patent number: 4242469Abstract: Grafted elastomers produced by a multiple grafting technique are blended with a resinous polymer to yield compositions which have low odor, low taste-transfer, and improved optical properties.Type: GrantFiled: September 18, 1978Date of Patent: December 30, 1980Assignee: CY/RO IndustriesInventors: Joseph M. Schmitt, Richard J. Quinn
-
Patent number: 4223096Abstract: Rubber-modified terpolymers of from 50 to 83% of a monoalkenyl aromatic monomer, from 15 to 30% of an unsaturated dicarboxylic acid anhydride, from 2 to 20% of an unsaturated nitrile are described which are useful as molding compositions.Type: GrantFiled: October 2, 1978Date of Patent: September 16, 1980Assignee: Monsanto CompanyInventors: Yoon C. Lee, Quirino A. Trementozzi
-
Patent number: 4201829Abstract: There is provided metal plated, non-burning molded thermoplastic articles comprised of (A) a substrate consisting of a molded non-burning thermoplastic blend of (1) an admixture of (a) a grafted rubbery copolymer and (b) a resinous copolymer and (2) a vinyl chloride homopolymer of copolymer thereof and (B) a metal coating deposited on and bonded to the substrate (A).Type: GrantFiled: August 14, 1978Date of Patent: May 6, 1980Assignee: The Goodyear Tire & Rubber CompanyInventors: William C. Mast, Richard G. Bauer
-
Patent number: 4195133Abstract: High impact strength rubber modified styrene and styrene-acrylonitrile (SAN) thermoplastics are prepared by incorporating into the styrene or SAN copolymer a conjugated diene butyl rubber elastomer. Conventional processes are effective to provide products having suitable impact strength and related properties.Type: GrantFiled: November 28, 1978Date of Patent: March 25, 1980Assignee: Exxon Research & Engineering Co.Inventor: Raymond F. Murphy
-
Patent number: 4169869Abstract: ABS compounds which provide extruded articles, having a low gloss or mat finish and which retain excellent impact resistance are obtained by including in said ABS compositions poly(butadiene) and a copolymer of butadiene and acrylonitrile.Type: GrantFiled: November 3, 1977Date of Patent: October 2, 1979Assignee: Abtec Chemical CompanyInventor: David L. Milenius
-
Patent number: 4166081Abstract: Graft copolymers of resin-forming monomers on monoolefin-type rubber spines, particularly ethylene-propylene-non-conjugated diene rubber spines, are made in solution with the aid of a free radical polymerization initiator. The graft copolymers have high impact strength.Type: GrantFiled: December 5, 1977Date of Patent: August 28, 1979Assignee: Uniroyal, Inc.Inventors: Albert A. Fournier, Jr., Charles F. Paddock
-
Patent number: 4166082Abstract: A vinylidene chloride copolymer film having excellent bubble stability in an inflation-stretching process and excellent cold resistance is prepared by inflation-stretching a tubular amorphous substance obtained by melt-extruding and quenching a composition comprising vinylidene chloride copolymer, a miscible type elastomer (A component) and a particle dispersion type elastomer (B component) in a range surrounded by the lines (a), (b), (c) and (d) ##EQU1## WHEREIN A WEIGHT PERCENT OF THE B component to total elastomers is plotted on X axis (abscissa) and a weight percent of total content of the A component and the B component to total components is plotted on Y axis (ordinate).Type: GrantFiled: May 19, 1977Date of Patent: August 28, 1979Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Nobuyuki Hisazumi, Shinichiro Funabashi
-
Patent number: 4161472Abstract: Polyvinyl chloride (PVC) resin is compounded with a conventional impact modifier referred to herein as a "co-modifier", and a block copolymer "ultra-modifier" which together provide a composition of unexpectedly enhanced impact strength. Irrespective of the characteristic particle size distribution of the co-modifier, which may be normal, bimodal or neither, the combination of ultra-modifier and co-modifier produces a broad distribution of small and large modifier particles. Better impact strength than with either small particles alone, or large particles alone is thus obtained.Type: GrantFiled: January 23, 1978Date of Patent: July 17, 1979Assignee: The B. F. Goodrich CompanyInventor: Marvin H. Lehr