Ethylenic Reactant Reacted In The Presence Of A Solid Polymer Substrate Derived From Reactant Containing Two Unsaturated Groups And Is Devoid Of An Aromatic Group Patents (Class 525/315)
-
Patent number: 5153270Abstract: Maleic anhydride is grafted onto unsaturated elastomeric terpolymers consisting of monomeric units coming from at least two different monomers having the formula R--CH.dbd.CH.sub.2 (R=hydrogen or an alkyl group containing from 1 to 6 carbon atoms) and from a conjugated or non-conjugated dienic monomer by mass reaction, which is carried out by heating at 120.degree.-350.degree. C. a mixture of said maleic anhydride with the terpolymer in the presence of a catalyst consisting of a compound having the formula:M.sub.n X.sub.zwherein:M=a metal of group VIII of the periodic system, and in particular Rh and Ru;X=a counterion,N=valence of the counterion; andZ=valence of the metal.Type: GrantFiled: August 1, 1989Date of Patent: October 6, 1992Assignee: Ausimont S.r.l.Inventors: Lucia Roncetti, Viviano Banzi
-
Patent number: 5132370Abstract: An improved method for carboxylating styrenic resins and particularly impact-modified styrenic resins such as ABS resins, by melt-processing a mixture comprising the styrenic resin, an ethylenically-unsaturated carboxylic compound, and, optionally, a free-radical generator.Type: GrantFiled: October 22, 1991Date of Patent: July 21, 1992Assignee: Borg-Warner Chemicals, Inc.Inventors: Thomas S. Grant, David V. Howe
-
Patent number: 5122572Abstract: This invention provides a novel catalyst composed of a complex of an organic acid or its ester and a Lewis acid, preferably boron trichloride that can add olefin monomers to increase the molecular weight of the complex from as low as 200 to in excess of a million, with the complex being active viz., living, until the complex dies, viz., is decomposed or destroyed so that polymers in the liquid or easily liquefiable range of 300 to about 10,000 can be made of those more difficult to be liquefied or unliquefiable, viz., those of over 10,000 up to 100,000 or in some cases 500,000 and then those in the range of the elastomers, or moldable or extrudable plastics range having very high molecular weights, generally in excess of 100,000 up to in excess of 500,000 and having useful end groups such as the halogens and specifically chloride, allyl, acryl or methacryl, acetate or formate to name some of the more useful ones.Type: GrantFiled: November 29, 1989Date of Patent: June 16, 1992Inventors: Joseph P. Kennedy, Rudolf Faust
-
Patent number: 5109907Abstract: A process is provided for preparing a terminally functionalized polymer from a living polymer obtained by anionic polymerization of a diene monomer or mixture of a diene monomer and a vinyl aromatic hydrocarbon monomer which comprises reacting the living polymer with a compound having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are selected from the group consisting of H, alkyl, cycloalkyl, aryl, dialkylaminoaryl, aralkyl, and aprotic O, N and S- containing alkyl, cycloalkyl, aryl and aralkyl groups; wherein R.sub.3 is selected from the group consisting of alkyl, cycloalkyl, aryl, dialkylaminoaryl, aralkyl, and aprotic O, N and S- containing alkyl, cycloalkyl, aryl and aralkyl groups; with the proviso that at least one of the R.sub.1, R.sub.2 and R.sub.3 groups must be a dialkylaminoaryl group and that not all of the R.sub.1, R.sub.2 and R.sub.3 groups can be aryl groups.Type: GrantFiled: July 19, 1991Date of Patent: May 5, 1992Assignee: Bridgestone/Firestone, Inc.Inventors: Mark L. Stayer, Jr., Thomas A. Antkowiak, David F. Lawson, Russell W. Koch
-
Patent number: 5096965Abstract: Polymeric blends of (a) linear alternating polymer of carbon monoxide and at least one ethylenically unsaturated hydrocarbon with (b) reaction product of carbon monoxide and ethylenically unsaturated hydrocarbon with other polymeric material selected from polymeric polyols and diene rubbers are obtained when the linear alternating polymer is produced in the presence of the other polymeric material.Type: GrantFiled: June 22, 1989Date of Patent: March 17, 1992Assignee: Shell Oil CompanyInventors: Antonius A. Broekhuis, Eit Drent
-
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: 5077342Abstract: An improved method for carboxylating styrenic resins and particularly impact-modified styrenic resins such as ABS resins, by melt-processing a mixture comprising the styrenic resin, an ethylenically-unsaturated carboxylic compound, and, optionally, a free-radical generator.Type: GrantFiled: June 4, 1987Date of Patent: December 31, 1991Assignee: Borg-Warner Chemicals, Inc.Inventors: Thomas S. Grant, David V. Howe
-
Patent number: 5075347Abstract: An improved process for forming hydroperoxide derivatives of rubbery polymers. The hydroperoxide derivatives being particularly well suited for use as intermediates in forming graft rubbery polymers. The process involves dissolving a rubbery polymer in a monomer mixture and adding to the rubbery polymer/monomer mixture a photosensitizing agent. The rubbery polymer-monomer mixture is then oxygenated and exposed to light under conditions wherein triplet oxygen is converted to singlet oxygen. The improvement comprises adding to the rubbery polymer/monomer mixture a solvent capable of solubilizing the photosensitizing agent in the rubbery polymer/monomer mixutre. The solubilizer increases the yield of hydroperoxide derivatives of rubbery polymers formed by a factor of 3.Type: GrantFiled: January 23, 1989Date of Patent: December 24, 1991Assignee: The Dow Chemical CompanyInventors: Alan E. Platt, Jerry L. Hahnfeld, David A. Habermann
-
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: 5070148Abstract: It is important for tire treads to exhibit good wet skid resistance, low rolling resistance, good wear characteristics and good abrasion resistance. This is often accomplished by utilizing a blend of various rubbers in making tire tread compositions. However, some of the desirable characteristics of the individual rubbers in the blend are frequently lost on mixing. The segmented elastomers of this invention offer a unique combination of desirable characteristics for utilization in making tire tread compositions.Type: GrantFiled: January 16, 1990Date of Patent: December 3, 1991Assignee: The Goodyear Tire & Rubber CompanyInventors: Wen-Liang Hsu, Adel F. Halasa
-
Patent number: 5066729Abstract: A process is provided for preparing a terminally functionalized polymer from a living polymer obtained by anionic polymerization of a diene monomer or mixture of a diene monomer and a vinyl aromatic hydrocarbon monomer which comprises reacting the living polymer with a compound having the formula: ##STR1## wherein R.sub.1 and R.sub.2 are selected from the group consisting of H, alkyl, cycloalkyl, aryl, dialkylaminoaryl, aralkyl, and aprotic O, N and S- containing alkyl, cycloalkyl, aryl and aralkyl groups; wherein R.sub.3 is selected from the group consisting of alkyl, cycloalkyl, aryl, dialkylaminoaryl, aralkyl, and aprotic O, N and S- containing alkyl, cycloalkyl, aryl and aralkyl groups; with the proviso that at least one of the R.sub.1, R.sub.2 and R.sub.3 groups must be a dialkylaminoaryl group and that not all of the R.sub.1, R.sub.2 and R.sub.3 groups can be aryl groups.Type: GrantFiled: April 9, 1990Date of Patent: November 19, 1991Assignee: Bridgestone/Firestone, Inc.Inventors: Mark L. Stayer, Jr., Thomas A. Antkowiak, David F. Lawson, Russell W. Koch
-
Patent number: 5064906Abstract: Disclosed is a graft copolymer resin prepared by graft polymerizing a vinyl compound onto a composite-structured acrylic rubber whose particles are composed of a core consisting of a diene rubber enlarged by treatment with an acid group-containing copolymer latex, and an outer layer consisting of an acrylate polymer having a crosslinked structure formed by the combined use of a graft-linking agent and a cross-linking agent. This graft copolymer resin may be blended with a rigid thermoplastic resin in a specific proportion. This resin composition imparts a good gloss to the molded articles formed therefrom, while retaining excellent impact resistance and weather resistance.Type: GrantFiled: August 28, 1989Date of Patent: November 12, 1991Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kazuo Kishida, Yutaka Toyooka, Haruyoshi Kitahara
-
Patent number: 5059658Abstract: A method of producing a modified polypropylene comprising the step of graft-polymerizing a propylene random copolymer containing an unconjugated diene comonomer represented by the general formula: ##STR1## wherein R.sub.1 -R.sub.4 are H or an alkyl group having 1-6 carbon atoms, and n is an integer of 1-20, with a monomer having an unsaturated bond by a radical method.Type: GrantFiled: April 3, 1990Date of Patent: October 22, 1991Assignee: Tonen Sekiyagaku Kabushiki KaishaInventors: Tadashi Sezume, Akira Kobayashi, Masahide Murata, Mayako Ogata, Masahiro Ohsawa, Takashi Mikami
-
Patent number: 5028349Abstract: Elastic-thermoplastic or thermoplastic powder-form moulding compositions having uniform particles size and improved thermal stability and processes for their manufacture.Type: GrantFiled: March 30, 1988Date of Patent: July 2, 1991Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
-
Patent number: 5017660Abstract: A selectively, partially hydrogenated butadiene polymer produced by selectively, partially hydrogenating a butadiene polymer comprising:(1) a bound styrene content [S] of 0 to 40% by weight;(2) a vinyl linkage content [V] of 1 to 80% at the butadiene portion;(3) a weight average molecular weight (Mw) of 10,000 to 1,000,000; and(4) a molecular weight distribution (Mw/Mn) of 1.2 to 5.0;wherein the selectively, partially hydrogenated butadiene polymer produced is characterized by(5) a hydrogenation ratio [A] of 3 to 85% of the total butadiene portion; and(6) a hydrogenation ratio [B] of 20% or more at the vinyl linkage moiety of the butadiene portion; andwherein the [A], [B], [S] and [V] satisfy the relationships of:(7) [A]/([S]+[V]).sup.1/2 which is 2 to 8; and(8) [B].[V].sup.1/2 /[A] which is 10 to 16.Type: GrantFiled: August 3, 1988Date of Patent: May 21, 1991Assignee: Asahi Kasei Kogyo kabushiki KaishaInventors: Yasuo Hattori, Yuichi Kitagawa
-
Patent number: 5015688Abstract: Aqueous heat-curable coating substances in a polyester and acrylic resin base and a process for their manufacture. The new coating substances are usable as aqueous, heat-curable coatings and as clear varnish coating substances. The new heat-curable aqueous coating substances contain as binding agents 20 to 45%/weight of an amine resin cross-linking agent and 80 to 55%/weight of a polyester oligomer polyacrylate which is water-soluble following neutralization with bases and has a hydroxyl value of 150 to 390 and an acid value of 16 to 40, manufactured by the radical polymerization of a hydroxyfunctional (meth) acrylic acid ester, a monofunctional ethylenically unsaturated acid and, if required, an .alpha., .beta. ethylenically unsaturated monomer with no functional groups, in a polyester oligomer.Type: GrantFiled: October 26, 1989Date of Patent: May 14, 1991Assignee: Herbertsgesellschaft GmbHInventors: Klaus Bederke, Volker Ducoffre, Knut Graef
-
Patent number: 5015695Abstract: Novel heat-curable elastomeric polymers are produced which comprise an elastomeric base polymer modified by the presence on the elastomeric base polymer molecule of at least one pendant carboxylic acid ester group wherein the ester moiety contains certain types of reactive unsaturation. In a preferred embodiment, the base polymer is a selectively hydrogenated block copolymer of the poly(vinylaromatic compound)/polyalkadiene type, and the ester moiety is propargyl.Type: GrantFiled: July 30, 1990Date of Patent: May 14, 1991Assignee: Shell Oil CompanyInventor: Pui K. Wong
-
Patent number: 4997911Abstract: The present invention provides a method for recovering polymer agglomerates in the form of dry powders or granules comprising steps of:(A) coagulating a polymer latex obtained by emulsion polymerization or suspension polymerization to thereby form hydrous agglomerates in which latex particles are not fused together,(B) immersing the hydrous agglomerates in an organic liquid insoluble or hardly soluble in water which wets but does not dissolve or swell said agglomerates at a temperature lower than the temperature at which the latex particles constituting the agglomerates are fused together, to thereby substitute said organic liquid for the water contained in the agglomerates with the organic liquid,(C) thereby forming two phases; a water phase expelled from the agglomerates and an organic liquid phase in which the agglomerates are immersed,(D) separating the agglomerates from the organic liquid phase, and(E) removing by evaporation the organic liquid attached to the agglomerates, whereby the agglomerates are rType: GrantFiled: September 7, 1988Date of Patent: March 5, 1991Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Hideo Yasui, Wataru Okada, Yasuhiro Miki, Toragoro Mitani
-
Patent number: 4990569Abstract: A rubber-modified styrene resin composition is disclosed, in which a soft component comprising an elastomer is dispersed in a resin matrix comprising a styrene resin in the form of particles, wherein:(1) the soft component particles dispersed in the composition have an average particle size of from 0.2 to 2.6 .mu.m;(2) the soft component has such a particle size distribution as having two maxima, one in the range less than 0.8 .mu.m and the other in the range not less than 0.8 .mu.m;(3) the elastomer is present in an amount of from 5.0 to 10.0% by weight based on the resin composition; and(4) the resin matrix has an intrinsic viscosity [.eta.] of at least 0.65.The resin composition exhibits markedly improved impact strength, stiffness and gloss.Type: GrantFiled: July 25, 1988Date of Patent: February 5, 1991Assignee: Sumitomo Chemical Company, Ltd.Inventors: Yasushi Okamoto, Tetsuo Uno
-
Patent number: 4978719Abstract: Novel heat-curable elastomeric polymers comprise an elastomeric base polymer modified by the presence on the elastomeric base polymer molecule of at least one pendant carboxylic acid ester group wherein the ester moiety contains certain types of reactive unsaturation. In a preferred embodiment, the base polymer is a selectively hydrogenated block copolymer of the poly(vinylaromatic compound)polyalkadiene type, and the ester moiety is propargyl.Type: GrantFiled: May 9, 1989Date of Patent: December 18, 1990Assignee: Shell Oil CompanyInventor: P. K. Wong
-
Patent number: 4960829Abstract: Blends comprised of (A) a high molecular weight elastomeric polymer; (B) a sufficient amount of an ethylene/alphaolefin/nonconjugated polyene terpolymer having a number average molecular weight of between about 1,000 and about 15,000 such that the variety of the blend is at least about 5% lower than the viscosity of component (A) alone, and (c) a curative, exhibit increased processability, and, when cured, exhibit unexpectedly desirable tensile strength, ozone resistance and oil resistance.Type: GrantFiled: July 25, 1988Date of Patent: October 2, 1990Assignee: Uniroyal Chemical Company, Inc.Inventors: Ralph D. Allen, Seshan Thiruvengada, Frank C. Cesare, Harry D. Visser
-
Patent number: 4959417Abstract: Composite acrylic acrylic resin particles each comprising a particular metal-containing crosslinked acrylic polymer to which a number of substantially linear acrylic polymer chains are chemically bonded are provided. Such particles are specifically useful as resinous filler in curing type coating compositions because of having curing catalytic activities.Type: GrantFiled: April 22, 1988Date of Patent: September 25, 1990Assignee: Nippon Paint Co., Ltd.Inventors: Tadafumi Miyazono, Shinichi Ishikura
-
Patent number: 4929682Abstract: Grafting of maleic anhydride, possibly together with styrene, on olefinic polymers, carried out in the presence of radical starters, characterized in that one operates with the polymer maintained in suspension of either an aliphatic, cycloaliphatic or aromatic ketone, containing from 3 to 22 carbon atoms.Type: GrantFiled: May 6, 1988Date of Patent: May 29, 1990Assignee: Ausimont S.p.A.Inventors: Viviano Banzi, Roberto Fabbri
-
Patent number: 4918118Abstract: A process for improving properties of a synthetic resin powder by subjecting a latex of a graft-copolymer whose back bone is a rubber to coagulation, and adding a lubricant to the graft-copolymer in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of said graft-copolymer, and then removing water. The bulk specific gravity of a synthetic resin powder produced is large, the flowability and blocking resistance are remarkably improved in comparison with known methods and blocking during storage is prevented. Lines for transporting the powder do not become packed with the resin powder. It is possible to automatically weigh the resin powder, and the powder does not exhibit a tendency to increase in volume during mass transport.Type: GrantFiled: April 11, 1988Date of Patent: April 17, 1990Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Atsushi Kawakatsu, Ryuichi Takagi
-
Patent number: 4912162Abstract: Disclosed is a graft copolymer resin prepared by graft polymerizing a vinyl compound onto a composite-structured acrylic rubber whose particles are composed of a core consisting of a diene rubber enlarged by treatment with an acid group-containing copolymer latex, and an outer layer consisting of an acrylate polymer having a crosslinked structure formed by the combined use of a graft-linking agent and a cross-linking agent. This graft copolymer resin may be blended with a rigid thermoplastic resin in a specific proportion. This resin composition imparts a good gloss to the molded articles formed therefrom, while retaining excellent impact resistance and weather resistance.Type: GrantFiled: February 3, 1987Date of Patent: March 27, 1990Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kazuo Kishida, Yutaka Toyooka, Haruyoshi Kitahara
-
Patent number: 4866129Abstract: Impact resistant thermoplastic molding materials containing a styrene polymer modified with rubber to be impact resistant, a hydrogenated styrene containing block copolymer and a polyphenylene ether as well as optional additives in which 50 to 98 percent by weight of the particles of the flexible component of the impact resistant styrene polymer have an average particle diameter of equal to or less than 1.0 micron and 2 to 50 percent by weight of the particles of the flexible have an average particle diameter of equal to or greater than 2 microns.Type: GrantFiled: July 13, 1988Date of Patent: September 12, 1989Assignee: BASF AktiengesellschaftInventors: Franz Brandstetter, Adolf Echte, Franz Haaf, Herbert Naarmann
-
Patent number: 4853436Abstract: A graft copolymer having a plurality of polymer side chains is disclosed. The starting backbone polymer is a homopolymer or copolymer of a styrene derivative having a pendant vinylidene group on the benzene ring. The graft copolymer may be produced by metallizing said backbone polymer with an alkali metal and then polymerizing an ethylenically unsaturated monomer in the presence of the metallized polymer as an anionic polymerization initiator.Type: GrantFiled: February 19, 1988Date of Patent: August 1, 1989Assignee: Nippon Paint Co., Ltd.Inventors: Masatoshi Ohata, Koichi Tsutsui, Ikedal Shoji, Teruo Fujimoto
-
Patent number: 4845155Abstract: A composition of matter which comprises an elastomer grafted at a level of from about 40 to about 60 weight percent with a polymer matrix comprising recurring units of at least one free radical polymerizable monomer and its method of preparation are disclosed.Type: GrantFiled: April 30, 1987Date of Patent: July 4, 1989Assignee: Arco Chemical Technology, Inc.Inventor: Barry D. Dean
-
Patent number: 4822832Abstract: Described are novel thermosetting epoxy resin compositions suitable for making cured resins, prepregs and stiff, tough thermoset composites. The thermosetting compositions comprise a polyepoxide component, an amine hardner and a specified amount of certain aromatic oligomers containing functional groups which are reactive with the polyepoxide and/or hardener under curing conditions for the composition. The cured resins have a multiphase morphology which comprises at least one glassy continuous phase and at least one glassy discontinuous phase and have a fracture toughness, K.sub.IC, of at least 1.0 MPam.sup.1/2.Type: GrantFiled: April 7, 1987Date of Patent: April 18, 1989Assignee: Hercules IncorporatedInventors: Sung G. Chu, Harold Jabloner, Brian J. Swetlin
-
Patent number: 4794145Abstract: 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: December 27, 1988Assignee: The Dow Chemical CompanyInventors: Gary K. Lund, Raymond L. Laakso, Jr., Calvin P. Esneault, Brian W. Walther
-
Patent number: 4789708Abstract: Ethylene propylene copolymer elastomers and ethylene propylene diene terpolymer elastomers are shown which, when cured, exhibit improved oil resistance and chemical aging properties at elevated temperatures and pressures. A previously polymerized liquid 1,2-polybutadiene is incorporated into the elastomer by chemical blending during the polymerization process. Such compositions are useful as electrical insulating materials for use under extreme environmental conditions, particularly in wire and cable constructions.Type: GrantFiled: December 14, 1987Date of Patent: December 6, 1988Assignee: Hughes Tool CompanyInventor: Raymond L. Guzy
-
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
-
Patent number: 4783508Abstract: An impact resistant thermoplastic polymer comprising highly occluded rubbery particles is prepared by contacting an emulsion of a rubbery polymer with at least one addition polymerizable, graftable monomer under conditions such that the rubber emulsion particles imbibe the monomer, but substantially no monomer polymerization occurs followed by free radically polymerizing the monomer and thereafter repeating steps (a) and (b) at least one more time.Type: GrantFiled: February 26, 1987Date of Patent: November 8, 1988Assignee: The Dow Chemical CompanyInventors: Eugene R. Moore, Thomas D. Traugott
-
Patent number: 4772668Abstract: Sulphur-containing elastic-thermoplastic graft products of styrene, .alpha.-methyl styrene, p-methyl styrene, vinyl toluene, acrylonitrile or methyl methacrylate or mixtures thereof on a particle-like rubber with an average particle diameter (d.sub.50) of from 0.05 to 20.0 .mu.m and a glass temperature .ltoreq.10.degree. C. with a total rubber content of from 1 to 80% by weight, whereby the graft products have a sulphur content of from 1.15 to 3.95% by weight and the thermoplast proportion of the polymerized monomers on the particle-like rubber has a limiting viscosity of from 2 to 15 ml/g (measured in dimethyl formamide at 25.degree. C.) and in which at least 90% by weight of the incorporated sulphur is present as a constituent of terminal C1-18-thioalkyl groups.Type: GrantFiled: February 10, 1986Date of Patent: September 20, 1988Assignee: Bayer AktiengesellschaftInventors: Herbert Eichenauer, Alfred Pischtschan, Karl-Heinz Ott
-
Patent number: 4771107Abstract: A thermoplastic molding material which contains, in each case based on the molding material comprising A+B,A. from 50 to 95% by weight of a rigid matrix composed of,(a.sub.1) styrene and(a.sub.2) acrylonitrile,B. from 50 to 5% by weight of a nonrigid phase which is uniformly dispersed in the rigid matrix and which comprises a graft copolymer of the monomers (a.sub.1) and (a.sub.2) and a styrene-butadiene block copolymer,wherein the styrene-butadiene block copolymer has a styrene content of from 50 to 95% by weight and a butadiene content of from 50 to 5% by weight, each based on the block polymer, and has a molecular weight (weight average) within the range from 50,000 to 300,000, is used for producing moldings.Type: GrantFiled: February 5, 1987Date of Patent: September 13, 1988Assignee: BASF AktiengesellschaftInventor: Hans Hoenl
-
Patent number: 4761456Abstract: 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: August 18, 1986Date of Patent: August 2, 1988Assignee: The Dow Chemical CompanyInventors: Gary K. Lund, Calvin P. Esneault
-
Patent number: 4749747Abstract: A process for the production of a nonaqueous stable emulsion feedstock comprising a rubber, a block copolymer having at least one component miscible with the rubber and at least one component miscible with the monomer, and at least two unsaturated organic monomers capable of free radical polymerization is disclosed. At least one of the monomers must be miscible with the rubber and the mixture of the monomers is substantially a nonsolvent for the rubber. The block copolymer maintains the rubber or rubber-rich particles in emulsified form within the mixture of monomers. In general, the process comprises (1) mixing the rubber, block copolymer and at least a portion of the rubber miscible monomers to form a first nonaqueous solution, (2) mixing the remaining monomers and the remaining portion of the rubber miscible monomers to form a second solution, and (3) combining the two solutions to form the nonaqueous stable emulsion feedstock.Type: GrantFiled: August 28, 1987Date of Patent: June 7, 1988Assignee: The Standard Oil CompanyInventors: Wen B. Shyu, David A. Woodhead, Vincent P. Quigley
-
Patent number: 4698394Abstract: Solid copolymers of a monovinyl aromatic compound and an olefinic benzocyclobutene monomer of the formula ##STR1## where R.sub.1 is hydrogen or CH.sub.3 and R.sub.2 is --CH.sub.2 ).sub.n where n is 0 to 6 are claimed. Such copolymers can be easily crosslinked at temperatures above about 200.degree. C., resulting in better solvent resistance and higher Tg. Also claimed are copolymers with other monomers such as acrylonitrile and associated graft copolymers, such as HIPS and ABS copolymer.Type: GrantFiled: December 23, 1985Date of Patent: October 6, 1987Assignee: Shell Oil CompanyInventor: Pui K. Wong
-
Patent number: 4694032Abstract: A process for preparing a thermoplastic resin composition capable of giving delustered articles which comprises blending (A) 10 to 30 parts by weight of a graft-copolymer and (B) 90 to 70 parts by weight of a copolymer, the total amount of the components (A) and (B) being 100 parts by weight;said graft-copolymer (A) being prepared by adding a nonionic or cationic polymer coagulant to (1) 70 to 95 parts by weight of diene rubber having a diene content of more than 50% by weight to give a coagulated diene rubber, and then graft-polymerizing (2) 30 to 5 parts by weight of at least one monomer selected from the group consisting a vinyl aromatic monomer, a vinyl cyanide and a methacrylic acid ester onto the coagulated diene rubber, the total amount of the components (1) and (2) being 100 parts by weight; said polymer (B) being prepared by polymerizing at least one monomer selected from the group consisting of an aromatic vinyl monomer, a vinyl cyanide, an acrylic acid ester and a methacrylic acid ester.Type: GrantFiled: November 7, 1985Date of Patent: September 15, 1987Assignee: Kanegaguchi Kagaku Kogyo Kabushiki KaishaInventors: Osamu Kakimoto, Fumiya Nagoshi
-
Patent number: 4692521Abstract: The invention relates to N-substitutecd acyl lactam compounds of the formula ##STR1## where R is a polyol residue originating from a polyol with the formula R-(OH).sub.x where x is a number.ltoreq.2R' a bivalent cyclic or non-cyclic alkyl, aralkyl, alkaryl or aryl radicalR" a bivalent radical having the following general formula ##STR2## wherein R'" is H, alkyl, cycloalkyl, aryl, alkaryl or aralkyl,R.sup.iv is H, alkyl, cycloalkyl, aryl, alkaryl or aralkyl whereR"' and R.sup.iv may jointly form a substituted or non-substituted cycloalkyl residuen is 0 or 1 and(-L) represents a non-opened lactam ring of the formula ##STR3## wherein Y is hydrocarbon residue with 3-11 carbon atoms. It has been found that this group of compounds is very suitable as activator in the preparation of nylon block copolymers, more specifically in the RIM or RRIM systems.Type: GrantFiled: December 13, 1985Date of Patent: September 8, 1987Assignee: Stamicarbon B.V.Inventors: Jozef J. M. Bongers, Albert A. Van Geenen
-
Patent number: 4692492Abstract: The present invention provides a non-staining, non-sticking styrenic polymer containing a siloxane. The invention further provides a method for forming the styrene/siloxane copolymer blend.Type: GrantFiled: October 21, 1985Date of Patent: September 8, 1987Assignee: Mobil Oil CorporationInventor: Binnur Z. Gunesin
-
Patent number: 4692520Abstract: The invention relates to the N-substituted acyl-lactam compound of the formula: ##STR1## where R' is a bivalent cyclic or non-cyclic alkyl, aralkyl, alkaryl or aryl radicalR" a bivalent radical having the following general formula ##STR2## wherein R'" is H, alkyl, cycloalkyl, aryl, alkaryl or aralkyl,R.sup.iv is H, alkyl, cycloalkyl, aryl, alkaryl or aralkyl whereR'" and R.sup.iv may jointly form a substituted or non-substituted cycloalkyl residuen is 0 or 1(-L) represents a non-opened lactam ring andx a number>1.It has been found that this group of compounds is very suitable as activator in the preparation of nylon polymers, more specifically in the so-called RIM (Reaction Injection Moulding) or RRIM (reinforced RIM) systems, in which it is highly essential for the polymerization to take effect within a very short time.Type: GrantFiled: December 13, 1985Date of Patent: September 8, 1987Assignee: Stamicarbon B.V. (Subsidiary of DSM)Inventors: Albert A. Van Geenen, Jozef J. M. Bongers
-
Patent number: 4692498Abstract: Rubber-modified thermoplastic resins are characterized by having a high content of olefinically unsaturated nitriles and good transparency. These thermoplastic resins generally comprise from about 43 to about 75 parts by weight of a monovinyl aromatic monomer, from about 20 to about 40 parts by weight of an olefinically unsaturated nitrile monomer and from about five to about 35 parts by weight of an unsaturated dicarboxylic acid anhydride monomer, providing 100 parts of a thermoplastic terpolymer, and from about two to about 30 parts by weight of rubber polymer per 100 parts of the thermoplastic terpolymer. Other resins characterized by having between about 30 to 45 parts by weight of unsaturated dicarboxylic acid anhydride exhibit good heat distortion temperatures.Type: GrantFiled: August 5, 1985Date of Patent: September 8, 1987Assignee: The Standard Oil CompanyInventors: Christopher L. Bodolus, David A. Woodhead
-
Patent number: 4686263Abstract: The production of impact-resistant polystyrene with EPDM simplifies the process and produces improved products if a modified ethylene/propylene rubber consisting of styrene/butadiene- or diene polymers, ethylene, optionally propylene and an unconjugated diene are used as the elastifying component.The modified EPDM rubbers consisting of (a) from 20 to 90% by weight of ethylene units, (b) from 1 to 25% by weight of units of a butadiene/styrene copolymer containing a quantity of from 10 to 90% by weight of styrene, (c) from 0 to 10% by weight of units of an unconjugated diolefin and (d) C.sub.3 -C.sub.18 .alpha.-monolefin units to make up the difference to 100% by weight, are a further subject of this invention.Type: GrantFiled: July 22, 1985Date of Patent: August 11, 1987Assignee: Bayer AktiengesellschaftInventors: Manfred Beck, Wolfgang Nentwig
-
Patent number: 4673709Abstract: The invention relates to hot-vulcanizable tread strips which are produced from novel vulcanizable compositions and from which the treads of pneumatic motor tires can be produced. The vulcanizable compositions are based on a rubber component which includes a special, novel rubber component based on isoprene.The inventive tire treads have an excellent combination of useful properties which can be described by the following set of characteristics:(a) High flexibility of low temperatures, i.e., the elastic rubber state is retained even at temperatures below -30.degree. C. (i.e., good cold-weather properties);(b) High vibration-damping over a wide temperature range, and thus good wet skid resistance (i.e., tread safety);(c) High wear-resistance, and thus long service life (i.e., economic advantages).The tire treads have good all-weather characteristics, and thus the tires may be used year-round.Type: GrantFiled: April 17, 1985Date of Patent: June 16, 1987Assignee: Huls AktiengesellschaftInventors: Karl-Heinz Nordsiek, Jurgen Wolpers, Johannes Tornau
-
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: 4654404Abstract: A heat-resistant and oil-resistant rubber composition comprising a nitrile group-containing rubber having an iodine value of not more than 120 and a nitrile group-containing liquid polymer having an iodine value of not more than 120.Type: GrantFiled: November 20, 1985Date of Patent: March 31, 1987Assignee: Nippon Zeon Co., Ltd.Inventors: Noboru Watanabe, Yoichiro Kubo, Tsuyoshi Nakagawa, Hideyoshi Shimoda
-
Patent number: 4639080Abstract: A coating material for optical glass fibers is disclosed. The material is comprised of 1,4-polybutadienes having functional groups or modified polybutadienes derived from the 1,4-polybutadienes having introduced therein polymerizable double bonds different from the double bonds present in the 1,4-polybutadienes.Type: GrantFiled: August 28, 1984Date of Patent: January 27, 1987Assignees: Nippon Telegraph & Telephone Public Corporation, Nitto Electric Industrial Co., Ltd.Inventors: Takao Kimura, Nobuo Inagaki, Mitsuo Yoshihara, Fumihiko Kato
-
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
-
Patent number: 4602077Abstract: Disclosed are plastic copolymers of propylene with linear dienes having conjugated double bonds, in particular with butadiene, characterized by a molar ratio between the dienic units in configuration 1,2 and those in configuration 1,4 higher than 0.2, preferably higher than 1.Such copolymers are prepared by copolymerization of propylene with linear dienes in the presence of stereospecific catalysts comprising a halogen Ti compound supported on a Mg halide.The copolymers can be reacted with radically polymerizable monomers, thus obtaining functionalized products suited to be transformed into films having good adhesion characteristics.Type: GrantFiled: July 24, 1985Date of Patent: July 22, 1986Assignee: HIMONT IncorporatedInventors: Giuliano Cecchin, Floriano Guglielmi, Francesco Zerega