Interpolymerized With Non-hydrocarbon Monomer Patents (Class 526/338)
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Patent number: 5770660Abstract: An improved continuous process for the production of nitrile butadiene rubber with high bound acrylonitrile is provided wherein incremental amounts of butadiene monomer are continuously added in each of a plurality of reaction vessels to obtain a copolymer having superior environmental resistance and tensile strength properties.Type: GrantFiled: April 27, 1995Date of Patent: June 23, 1998Inventor: John W. Lightsey
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Patent number: 5767214Abstract: Process for preparing (co)polychloroprene rubber, comprising:a first step (a) in which a portion of a polymerizable composition is partially polymerized according to a batchwise process,a second step (b) in which the residual polymerizable composition is sequentially fed to the reaction mixture coming from the step (a),a possible third step (c) in which the reaction mixture coming from the step (b) is polymerized up to the desired conversion rate.Type: GrantFiled: July 16, 1997Date of Patent: June 16, 1998Assignee: Enichem Elastomers France S.A.Inventors: Nathalie Peresleni Rivet, Fran.cedilla.ois Sauterey
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Patent number: 5763521Abstract: An aqueous polymer dispersion is prepared by free radical aqueous emulsion polymerization of a mixture of monomers having at least one ethylenically unsaturated group, which comprises at least 30% by weight of monomers having two conjugated ethylenically unsaturated double bonds, by a process in which the polymerization temperature is varied in the course of the free radical aqueous emulsion polymerization.Type: GrantFiled: December 4, 1996Date of Patent: June 9, 1998Assignee: BASF AktiengesellschaftInventors: Peter Claassen, Onno Graalmann, Wolfgang Alois Hormuth, Marinus Visseren
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Patent number: 5756624Abstract: A method of tackifying an adhesive is provided, the improvement comprising the use of a copolymer consisting of monomer units derived monomers consisting of:(A) 10 to 50% by weight of a terpene with no conjugated double bonds,(B) 20 to 50% by weight of a member selected from the group consisting of olefinically unsaturated monocarboxylic acids containing 3 to 5 carbon atoms and anhydrides thereof, and olefinically unsaturated dicarboxylic acids containing 3 to 5 carbon atoms and anhydrides thereof, and(C) 40 to 50% by weight of an ester selected from the group consisting of esters and semiesters of olefinically unsaturated monocarboxylic containing 3 to 5 carbon atoms and esters and semiesters of olefinically unsaturated dicarboxylic acids containing 3 to 5 carbon atoms, with the proviso that the sum total of said monomers is 100% by weight.Type: GrantFiled: November 4, 1996Date of Patent: May 26, 1998Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Arno Behr, Wolfgang Ritter, Hans-Peter Handwerk, Oliver Pietsch
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Patent number: 5703189Abstract: An saturated nitrile-conjugated diene copolymer obtained by copolymerizing acrylonitrile with butadiene in the presence of a free radical initiator and an alkylthiol compound as a molecular weight modifier. A part of the monomers is incorporated in a monomer charge before polymerization, and the remainder thereof is added in a polymerization mixture during polymerization. The alkylthiol compound has 12 to 16 carbon atoms, which include at least three tertiary carbon atoms, and further has a sulfur atom directly bound to at least one of the tertiary carbon atoms. The copolymer has a Mooney viscosity of 15 to 450 and a bound nitrile content of 10 to 60% by weight. The breadth (.DELTA.AN) of compositional distribution of the unsaturated nitrile in the copolymer is 3 to 20. The copolymer is used in combination with a sulfur-containing vulcanizer.Type: GrantFiled: February 28, 1997Date of Patent: December 30, 1997Assignee: Nippon Zeon Co., Ltd.Inventors: Suguru Tsuji, Yuichi Uchizono
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Patent number: 5644010Abstract: A curable liquid resin which can give a coating composition capable of forming a film, the curable liquid resin being a copolymer obtained from(A) a monomer of the formula (1) or (2),CH.sub.2 .dbd.C(R.sup.1)COO--R.sup.2 (1)CH.sub.2 .dbd.C(R.sup.3)COO(C.sub.n H.sub.2n O).sub.m--R.sup.4(2)and(B) at least one monomer selected from the group consisting of(B1) a monomer prepared by reacting an ethylenically unsaturated epoxide (a) with a fatty acid (b) of the formula (3)R.sup.5 COOH (3)(B2) a monomer of the formula (4),CH.sub.2 .dbd.C(R.sup.6)CONR.sup.7 R.sup.8 (4)and(B3) a monomer whose molecule has at least two ethylenically unsaturated double bonds.Type: GrantFiled: July 18, 1995Date of Patent: July 1, 1997Assignee: Toyo Ink Manufacturing Co., Ltd.Inventors: Toru Kurihashi, Miki Kawashima, Takeo Yamaguchi
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Patent number: 5629397Abstract: 2,6-dimethylphenylmaleimide is used as a comonomer for the preparation of styrene copolymers and vinyl chloride copolymers having an increased glass transition temperature and low intrinsic coloration compared with the prior art.Type: GrantFiled: February 14, 1996Date of Patent: May 13, 1997Assignee: DSM Chemie Linz GmbHInventors: Gerhard Steinbauer, Jan Bartus, Heinrich Horacek, Otto Vogl, Gerhard Stern
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Patent number: 5627250Abstract: An unsaturated nitrile-conjugated diene copolymer having at least 0.03 mole, per 100 moles of the monomeric units constituting the molecule, of an alkylthio group having 12 to 16 carbon atoms, which include at least three tertiary carbon atoms, and having a sulfur atom which is directly bound to at least one of the tertiary carbon atoms; said copolymer having a Mooney viscosity of 15 to 65. This copolymer is produced by copolymerizing an unsaturated nitrile and a conjugated diene in the presence of a free-radical initiator by using as a molecular weight modifier an alkylthiol compound having the above-mentioned alkylthio group. The copolymer is used as a rubber composition having incorporated therein a sulfur-containing vulcanizer.Type: GrantFiled: March 29, 1995Date of Patent: May 6, 1997Assignee: Nippon Zion Co., Ltd.Inventors: Suguru Tsuji, Yuichi Uchizono, Misako Asada
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Patent number: 5610228Abstract: An anionic polymerization initiator includes a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A method of preparing an anionic polymerization initiator includes reacting an excess of a cyclic secondary amine with a conjugated diene to form an adduct; and, reacting the adduct with an organolithium compound. A method of preparing a polymer includes forming a solution of one or more anionically polymerizable monomers in a hydrocarbon solvent; and, polymerizing the monomer with an anionic polymerization initiator comprising a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A functionalized polymer includes the termination product of a living polymer having the general formula AYLi, wherein A is a functional group derived from an anionic polymerization initiator; and, Y is a divalent polymer radical; wherein the anionic polymerization initiator is a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene.Type: GrantFiled: June 6, 1995Date of Patent: March 11, 1997Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr.
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Patent number: 5552468Abstract: Seals for automotive body applications (such as, windows, hoods, trunks and doors) and building applications (such as, window glazing gaskets and weather strips) should be dimensional stable, provide low compression set, and offer outstanding sealing characteristics over a broad temperature range. They must be capable of sealing out noise, wind and water, while providing long-term ultraviolet light resistance.Type: GrantFiled: November 7, 1994Date of Patent: September 3, 1996Assignee: The Goodyear Tire & Rubber CompanyInventors: Hung D. Ngoc, Guy P. R. Duval
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Patent number: 5512647Abstract: A copolymer rubber which consists essentially of (A) from 70 to 99 wt % of a cyano group-containing acrylate of the formula (I): ##STR1## wherein R.sup.1 is a C.sub.2-6 alkylene group or --CH.sub.2 CH.sub.2 OCH.sub.2 CH.sub.2 --,(B) from 1 to 30 wt % of an .alpha.,.beta.-unsaturated nitrile,(C) from 0 to 10 wt % of at least one monomer selected from the following monomers:a) an active halogen group-containing monomerb) an epoxy group-containing monomerc) a carboxyl group-containing monomerd) a diene compounde) a (meth)acrylate having an ethylenically unsaturated bond in its side chain, and(D) from 0 to 15 wt % of other ethylenically unsaturated monomer which is copolymerizable with each of the above components (A), (B) and (C), andwhich has a Mooney viscosity (ML.sub.1+4 (100.degree. C.)) of at least 5.Type: GrantFiled: May 31, 1994Date of Patent: April 30, 1996Assignee: Tosoh CorporationInventors: Shinji Ozoe, Seiji Matsumoto, Kazumi Furuta
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Patent number: 5503939Abstract: The invention relates to a process for the production of two-coat finishes, in which a pigmented aqueous basecoat is applied, the basecoat obtained is coated over with a clearcoat, and basecoat and clearcoat are baked together. The process according to the invention is distinguished in that the aqueous basecoat contains an emulsion polymer which has been prepared in the presence of a reaction product (A), the reaction product (A) being obtained by reacting(i) a butadiene homo- or copolymer,(ii) at least one fatty acid of a drying oil or at least one drying oil or a mixture of at least one fatty acid of a drying oil and at least one drying oil, and(iii) maleic anhydridein a mass ratio of (i):(ii):(iii)=1.0:0.1 to 0.6:0.1 to 0.6 and, after adding a basic aqueous solution, converting the reaction product to an aqueous dispersion.Type: GrantFiled: December 9, 1994Date of Patent: April 2, 1996Assignee: BASF Lacke + Farben, AGInventors: Heinz P. Rink, Susanne Piontek, Bernhard Lettmann, Stefan Wieditz, Birgit Peitz, Achim Gast
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Patent number: 5502130Abstract: An anionic polymerization initiator includes a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A method of preparing an anionic polymerization initiator includes reacting an excess of a cyclic secondary amine with a conjugated diene to form an adduct; and, reacting the adduct with an organolithium compound. A method of preparing a polymer includes forming a solution of one or more anionically polymerizable monomers in a hydrocarbon solvent; and, polymerizing the monomer with an anionic polymerization initiator comprising a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A functionalized polymer includes the termination product of a living polymer having the general formula AYLi, Wherein A is a functional group derived from an anionic polymerization initiator; and, Y is a divalent polymer radical; wherein the anionic polymerization initiator is a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene.Type: GrantFiled: June 6, 1995Date of Patent: March 26, 1996Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr.
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Patent number: 5500447Abstract: An anionic polymerization initiator includes a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A method of preparing an anionic polymerization initiator includes reacting an excess of a cyclic secondary amine with a conjugated diene to form an adduct; and, reacting the adduct with an organolithium compound. A method of preparing a polymer includes forming a solution of one or more anionically polymerizable monomers in a hydrocarbon solvent; and, polymerizing the monomer with an anionic polymerization initiator comprising a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A functionalized polymer includes the termination product of a living polymer having the general formula AYLi, wherein A is a functional group derived from an anionic polymerization initiator; and, Y is a divalent polymer radical; wherein the anionic polymerization initiator is a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene.Type: GrantFiled: June 6, 1995Date of Patent: March 19, 1996Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr.
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Patent number: 5494986Abstract: A modified bisimide resin is prepared by copolymerizing a bisimide monomer and a cyclic triene. The copolymerization of a bisimide with a cyclic triene such as 1,2,4-trimethylenecyclohexane provides a modified bisimide having good fracture toughness.Type: GrantFiled: June 1, 1995Date of Patent: February 27, 1996Assignee: Shell Oil CompanyInventor: Larry S. Corley
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Patent number: 5489616Abstract: This invention relates to a process of manufacturing phosphoric acid-type chelate resins as uranyl ion adsorbents having enhanced chelation and re-utilizing ability by introducing plenty of phosphoric acid groups both on main- and side-chain of the copolymer skeleton. The resin is prepared by both the radical suspension copolymerization of vinyl monomers such as styrene, divinylbenzene, and bis-(2-chloroethyl) vinylphosphonate and the additional introduction of phosphono group onto the copolymer.Type: GrantFiled: April 7, 1993Date of Patent: February 6, 1996Assignee: Korea Research Institute of Chemical TechnologyInventors: In Hwan Park, Kil-Yeong Choi, Jin-Chul Jung, Jae-Oh Joo
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Patent number: 5478899Abstract: The capping of anionic polymers to make functionalized polymers is improved by using alkoxy silyl compounds having protected functional groups, such as acetal groups, as the capping agent. The protected functional groups are stable under a variety of conditions and then readily convert to more reactive terminal functional groups useful for making adhesives, sealants and coatings.Type: GrantFiled: October 27, 1994Date of Patent: December 26, 1995Assignee: Shell Oil CompanyInventor: Robert C. Bening
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Patent number: 5475074Abstract: A polymerizable composition containing;(A) 100 parts by weight of a vinylbenzyl compound of the formula (I), ##STR1## wherein each of R.sup.1 and R.sup.2 is independently a halogen atom, each of h and i is independently 0, 1 or 2, each of X.sup.1, X.sup.2 and X.sup.3 is independently an oxygen atom or a sulfur atom, and each of j, k and m is 0 or 1, provided that when k is 0, j is 0, that when m is 0, each of j and k is 0, that when j is 0 and when each of k and m is 1, X.sup.1 and X.sup.2 cannot be sulfur atoms at the same time, and that when each of m, k and j is 1, X.sup.1, X.sup.2 and X.sup.3 cannot be sulfur atoms at the same time,and(B) 0.1 to 20 parts by weight of 2,4-diphenyl-4-methyl-1-pentene.Type: GrantFiled: January 28, 1994Date of Patent: December 12, 1995Assignee: Tokuyama CorporationInventors: Shingo Matsuoka, Hideki Kazama, Tadashi Hara, Tomonori Matsunaga, Hiroshi Suga
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Patent number: 5475073Abstract: Low-molecular-weight, hydroxy-functional acrylate resins are disclosed. The resins are copolymers derived from an allylic alcohol or a propoxylated allylic alcohol, an acrylate or methacrylate monomer, and optionally, one or more additional ethylenic monomers. The resins are uniquely prepared without a chain-transfer agent or reaction solvent, and are useful in many thermoset polymer applications, including thermoset polyesters, polyurethanes, crosslinked polymeric resins, melamines, alkyds, uralkyds, and epoxy thermosets.Type: GrantFiled: November 18, 1994Date of Patent: December 12, 1995Assignee: Arco Chemical Technology, L.P.Inventor: Shao-Hua Guo
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Patent number: 5468789Abstract: A method is provided for making curable silicon containing acrylate silicone hardcoat compositions which employ an anaerobic gelation inhibitor such as galvinoxyl. Devolatilizing of an aqueous/organic solvent mixture from the silicon containing acrylate hardcoat formulation is conducted in an inert atmosphere. Acrylate hardcoat compositions imparting improved weathering resistance to thermoplastic substrates also are provided.Type: GrantFiled: September 12, 1994Date of Patent: November 21, 1995Assignee: General Electric CompanyInventors: Larry N. Lewis, George F. Medford, Arnold Factor
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Patent number: 5464914Abstract: A liquid hydrocarbon soluble difunctional organolithium initiator (DFI) is reacted with an anionically polymerizable monomer, such as isoprene or 1,3-butadiene, in the presence of a diamine or a triamine to form a polymer having low polydispersity and high tensile strength. The DFI is prepared by reacting a dialkenylarylene compound with an alkyllithium in a nonpolar solvent and in the presence of sufficient quantities of a trisubstituted amine to prevent precipitation of the DFI in the solvent.Type: GrantFiled: June 29, 1994Date of Patent: November 7, 1995Assignee: The Dow Chemical CompanyInventors: Grace Y. Lo, Arnold L. Gatzke
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Patent number: 5457163Abstract: This invention relates to a process of manufacturing phosphoric acid-type chelate resins as uranyl ion adsorbents having enhanced chelation and re-utilizing ability by introducing plenty of phosphoric acid groups both on main- and side-chain of the copolymer skeleton. The resin is prepared by both the radical suspension copolymerization of vinyl monomers such as styrene, divinylbenzene, and bis-(2-chloroethyl) vinylphosphonate and the additional introduction of phosphono group onto the copolymer.Type: GrantFiled: November 30, 1993Date of Patent: October 10, 1995Assignee: Korea Research Institute Of Chemical TechnologyInventors: In Hwan Park, Kil-Yeong Choi, Jin-Chul Jung, Jae-Oh Joo
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Patent number: 5449726Abstract: A modified bisimide resin is prepared by copolymerizing a bisimide monomer and a cyclic triene. The copolymerization of a bisimide with a cyclic triene such as 1,2,4-trimethylenecyclohexane provides a modified bisimide having good fracture toughness.Type: GrantFiled: December 13, 1994Date of Patent: September 12, 1995Assignee: Shell Oil CompanyInventor: Larry S. Corley
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Patent number: 5385459Abstract: Hydrocarbon polymers with grafts of polyethers, polylactones, or polyesters from the reaction of phosgene with glycols having from 1 to 4 carbon atoms are disclosed as having good release properties or low adhesion to hydrocarbon rubber materials. The hydrocarbon backbone polymers include EPDM, hydrogenated polybutadiene, and hydrogenated poly(styrene-butadiene) all said polymers having pendant succinic anhydride groups or brominated p-methylstyrene-isobutylene copolymers. The above-referenced graft copolymers along with butadiene-acrylonitrile rubber or epichlorohydrin polymers or copolymers are described as useful polymers to make self-release curing bladders or sleeves for use in making molded articles such as pneumatic tires.Type: GrantFiled: April 4, 1994Date of Patent: January 31, 1995Assignee: Bridgestone CorporationInventors: Daniel F. Graves, William L. Hergenrother
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Patent number: 5362787Abstract: Seals for automotive body applications (such as, windows, hoods, trunks and doors) and building applications (such as, window glazing gaskets and weather strips) should be dimensional stable, provide low compression set, and offer outstanding sealing characteristics over a broad temperature range. They must be capable of sealing out noise, wind and water, while providing long-term ultraviolet light resistance.Type: GrantFiled: November 18, 1993Date of Patent: November 8, 1994Assignee: The Goodyear Tire & Rubber CompanyInventors: Hung D. Ngoc, Guy P. R. Duval
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Patent number: 5145929Abstract: Pressure-activated adhesive that is a copolymer of butadiene and acrylonitrile or methacrylonitrile. The copolymer has a single glass transition temperature of no higher than about -25.degree. C., a nitrile content of no greater than about 31%, preferably of from about 18% by weight to about 30% by weight, a Mooney viscosity of at least 95 (measured according to ASTM D1646-87 at 100.degree. C. for 4 minutes), preferably from about 120 to about 150. The copolymer is not cross-linked, and the amount of vinyl groups in the copolymer should not exceed 10% by weight. The adhesive can be used to form an adhesive layer of an adhesive tape.Type: GrantFiled: June 24, 1991Date of Patent: September 8, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventor: David T. Ou-Yang
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Patent number: 5126415Abstract: The invention relates to a process for preparing polymers, with a polydispersity optionally approaching the theoretical polydispersity and substituted by functional groups in .alpha.,.omega.-positions, via radical polymerization of radically polymerizable monomers and using one or more initiators. In compliance with this process the degree of polymerization is maintained at the desired value by continuous elevation of the temperature.In case of a given heat program, the process of the invention renders possible to increase the conversion in producing polymers without the deterioration of the polydispersity.Type: GrantFiled: May 11, 1990Date of Patent: June 30, 1992Assignee: MTA Kozponti Kemiai Kutato IntezeteInventors: Tamara Foldes nee Berezsnich, Gyorgyi Miketa nee Fenyvesi, Andras Nagy, Tibor Pernecker, Arpad Rehak, Daniel Szalay, Ferenc Tudos
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Patent number: 5089576Abstract: In a process for producing a conjugated diene copolymer, the improvement in which when copolymerizing a conjugated diene monomer with an ethylenically unsaturated nitrile monomer, at least one compound selected from a bifunctional peroxide represented by formulaR.sub.1 --OO--R.sub.2 --OO--R.sub.3 (I)wherein R.sub.1, R.sub.2 and R.sub.3 each denote a hydrocarbon group, anda bifunctional peroxycarbonate represented by formula ##STR1## wherein R.sub.4, R.sub.5 and R.sub.6 each denote a hydrocarbon group, said bifunctional peroxide and peroxycarbonate being soluble in said monomers, is used as a polymerization initiator.Type: GrantFiled: March 30, 1990Date of Patent: February 18, 1992Assignee: Nippon Zeon Co., Ltd.Inventors: Suguru Tsuji, Toshiaki Saya, Shinji Komiyama, Hayato Furusho, Tetsu Ohishi, Mitsuhiro Tamura
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Patent number: 5079322Abstract: Multifunctional cyclobutarene peroxide polymerization initiators comprising at least one cyclobutarene moiety linked through the aromatic ring to at least one peroxide containing group which catalyze free radical plymerizations, as well as participate in cyclobutarene initiated ring opening polymerizations. The cyclobutarene peroxides of this invention are useful for the production of cross-linked, branched and graft polymeric compositions.Type: GrantFiled: May 22, 1991Date of Patent: January 7, 1992Assignee: The Dow Chemical CompanyInventors: Wen H. Tong, Duane B. Priddy
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Patent number: 5039768Abstract: Thermally stable hot applied plastisol compositions are especially useful in the assembly of metal parts. The compositions have adhesive and sealant qualities which allow them to be used in automotive assembly plants. Compositions of the invention comprise as major ingredients finely divided polyvinyl chloride resin, plasticizer, thermoplastic polymeric resin which is solid at room temperature but softens to a flowable state at application temperature, and an adhesion promotion system. Optionally a filler, wax, heat stabilizer, pigment, wetting agent, or mixtures thereof may be added. The individual components work synergistically to get good application properties, metal adhesion, wash-out resistance, and paintability.Type: GrantFiled: January 22, 1990Date of Patent: August 13, 1991Inventors: Michael J. Gerace, Janet M. Gerace
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Patent number: 4959434Abstract: Modified impact-resistant vinylaromatic copolymers containing from 2 to 10% by weight of an ethylenically unsaturated nutrile and from 0 to 30% by weight of alpha-methyl-styrene and having a gel content higher than 23%, a cracking resistance, in an olive oil/oleic acid mixture under a load of 10 MPa, higher than 100 min., and a melt index below 1.5 g/10 minutes.Type: GrantFiled: December 28, 1989Date of Patent: September 25, 1990Assignee: Montedison S.p.A.Inventors: Gianfranco Biglione, Savino Matarrese
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Patent number: 4826959Abstract: A mixture of an isomer of 2,2'-azobis(2,4-dimethylvaleronitrile) having a low melting point in an amount of about 70% by weight or more and an isomer of 2,2'-azobis(2,4-dimethylvaleronitrile) having a high melting point in an amount of about 30% by weight or less shows excellent solvent solubility, which is higher than that of the isomer having a low melting point. The mixture is useful as a polymerization initiator, and also as a blowing agent.Type: GrantFiled: January 29, 1988Date of Patent: May 2, 1989Assignee: Wako Pure Chemical Industries, Ltd.Inventors: Motoaki Tanaka, Tsutomu Miyagawa, Hideo Takeuchi
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Patent number: 4656219Abstract: A rubber article with excellent oil resistance and aging resistance to be used in contact with a polyolefin oil or a lubricating oil containing a polyolefin oil, at least the surface of the rubber article being contacted with said oil, said rubber article being composed substantially of a vulcanized product of a copolymer rubber comprising (1) 10 to 60% by weight of units derived from an unsaturated nitrile, (2) 0 to 30% by weight of units derived from a conjugated diene, and (3) 90 to 10% by weight of units derived from an ethylenically unsaturated monomer other than the unsaturated nitrile and/or units resulting from the hydrogenation of units derived from a conjugated diene.Type: GrantFiled: November 27, 1985Date of Patent: April 7, 1987Assignee: Nippon Zeon Co., Ltd.Inventors: Motofumi Oyama, Toshiharu Honda, Yoichiro Kubo
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Patent number: 4631309Abstract: Equipment for the exploration and/or production of petroleum and natural gas having elastomeric components have high resistance to materials encountered if the elastomeric components are shaped from a hydrogenated butadiene-acrylonitrile copolymer with a residual double bond content less than 1% and unhydrogenated nitrile groups.Type: GrantFiled: December 6, 1984Date of Patent: December 23, 1986Assignee: Bayer AktiengesellschaftInventors: Joachim Thormer, Friedrich Leibbrandt, Zsolt Szentivanyi, Hartmuth Buding
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Patent number: 4611087Abstract: Novel salts of alkenylsuccinic monoesters represented by the following formulas (I) or (II): ##STR1## in which R.sub.1 represents a hydrocarbon group, R.sub.2 represents a hydrogen atom or a methyl group, A represents an alkylene group having from 2 to 4 carbon atoms, B represents a carbonyl group or a methylene group, M is a monovalent or divalent cation.The monoesters can be emulsion-polymerized under optimum conditions while varying the hydrophilic and oleophilic balance depending on the type of monomer because they have hydrophobic hydrocarbon groups and oleophilic carboxylate groups and ether bonds of polyalkyleneoxy groups.The compounds according to the invention are an excellent reactive surface active agent, and also useful as an improver or modifier for polymer because they can impart hydrophilicity to hydrophobic resins when they are used in larger amounts as in the case of reactive surface active agents employed for ordinary.Type: GrantFiled: November 2, 1983Date of Patent: September 9, 1986Assignee: KAO CorporationInventors: Osamu Yamashita, Noboru Moriyama, Shoji Ootani, Katsuyo Wasamoto
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Patent number: 4518795Abstract: The di-ester of beta-pentabromophenoxyethanol and succinic acid, bis(beta-pentabromophenoxyethyl) succinate, is prepared by mono-ethoxylating pentabromophenol with ethylene oxide, then esterifying the resulting pentabromophenoxyethanol with succinic acid. The di-ester is a flame retardant for ABS.Type: GrantFiled: December 2, 1982Date of Patent: May 21, 1985Assignee: Borg-Warner Chemicals, Inc.Inventor: Yuval Halpern
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Patent number: 4450260Abstract: A process for the emulsion polymerization of one or more polymerizable monomers wherein the emulsion polymerization is carried out in the presence of an emulsifier in the form of a diacid of a cyclic alkane or alkene. Emulsifiers of that type have been found to provide improved latex stability, improved bloom and improved processability of the resulting polymer.Type: GrantFiled: February 7, 1983Date of Patent: May 22, 1984Assignee: Copolymer Rubber & Chemical Corp.Inventors: George A. Von Bodungen, Rudy F. Karg
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Patent number: 4443582Abstract: This invention relates to a polychloroprene elastomer distinguished by good processing properties and high tensile strength in the form of a polychloroprene mixture containing a sol polymer and a gel polymer in a ratio, by weight, of from 1:4 to 9:1, characterized in that both polymers have been produced in the presence of from 2.5 to 4.0 parts, by weight, of the potassium salt of disproportionated abietic acid (expressed as acid), from 0.3 to 1.0 part, by weight, of a condensation product of naphthalene sulphonic acid and formaldehyde and from 0.1 to 1.5 parts, by weight, of potassium hydroxide, based in each case on 100 parts, by weight, of monomer, and in that the gel polymer is a copolymer of chloroprene and from 1.5 to 2.5 mole percent, based on total monomer, of a diester corresponding to the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 represent hydrogen, chlorine or C.sub.1 -C.sub.4 alkyl; andX represents C.sub.2 -C.sub.10 alkylene.Type: GrantFiled: May 19, 1982Date of Patent: April 17, 1984Assignee: Bayer AktiengesellschaftInventors: Rudiger Musch, Gottfried Pampus, Peter Muller, Ulrich Eisele, Wolfgang Konter, Wilhelm Gobel
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Patent number: 4435532Abstract: Use of zinc salts of mercaptobenzimidazoles corresponding to the following general formula: ##STR1## wherein R represents hydrogen or a C.sub.1 -C.sub.4 alkyl group; and/or a zinc salt of a di-C.sub.1 -C.sub.9 -alkyldithiophosphate for the preparation of nitrile rubber/PVC mixtures.Type: GrantFiled: June 28, 1982Date of Patent: March 6, 1984Assignee: Bayer AktiengesellschaftInventors: Joachim Thormer, Hans H. Bertram, Otto Benn, Helmut Hurnik
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Patent number: 4429097Abstract: There are disclosed polymerizable alkyl poly(oxyalkylene) esters of an acrylate oligomer and copolymers thereof, especially stable, aqueous dispersions of water-insoluble emulsion copolymers of (1) about 10-70% by weight of methacrylic or acrylic acid, (2) about 0.5-25% by weight of an alkyl poly(oxyalkylene) ester of an acrylate oligomer, and (3) at least 25% by weight, to a total of 100%, of a C.sub.1 -C.sub.4 alkyl (meth)acrylate, and optionally, included in the total monomer mixture, a small amount of (4) about 0.5-1% by weight, of a polyethylenically unsaturated monomer. The copolymers, when neutralized and solubilized by addition of an alkali, are high efficiency thickeners for aqueous systems and have improved tolerance to ionic or electrolyte content. Typical systems that can be thickened are paint latices, cosmetic preparations, food preparations, ionic detergents, dye pastes for textiles, pharmaceuticals, and oil well drilling muds.Type: GrantFiled: September 16, 1982Date of Patent: January 31, 1984Assignee: Rohm and Haas CompanyInventors: Ching-Jen Chang, Travis E. Stevens
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Patent number: 4417043Abstract: A polymer capable of forming an anisotropic melt characterized in that the polymer chain includes residues of cross-linking reactants at a concentration sufficient to give a polymer with a melt viscosity of not greater than 10.sup.7 Nsec/m.sup.2 measured by capillary rheometry at a shear rate of 10.sup.4 N/m.sup.2. The polymers exhibit favorable shear dependent viscosity characteristics in that the viscosity is high under low shear conditions and is low under high shear conditions, as judged by the viscosity characteristics of polymers of the same composition but not containing the residues of cross-linking reactants.Type: GrantFiled: January 5, 1981Date of Patent: November 22, 1983Assignee: Imperial Chemical Industries PLCInventors: Frederic N. Cogswell, Brian P. Griffin, Clive P. Smith
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Patent number: 4404326Abstract: Precrosslinked nitrile rubber polymers are prepared by interpolymerizing a polyol polyacrylate with butadiene and acrylonitrile to improve compression set, extrusion rate and die swell properties of the precrosslinked polymers and blends thereof with linear nitrile rubber polymers without sacrificing other physical and processing properties.Type: GrantFiled: November 5, 1980Date of Patent: September 13, 1983Assignee: The B. F. Goodrich CompanyInventor: Daniel M. Chang
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Patent number: 4363903Abstract: A copolymer comprising (a) vinyl chloride or a mixture of vinyl chloride and a monomer copolymerizable therewith and (b) 1,2-polybutadiene oligomer and/or epoxidized 1,2-polybutadiene oligomer. The plasticized copolymer can be molded into soft moldings having a low compression set and high tensile and tear strengths. Also, by the incorporation of the copolymer into vinyl chloride homopolymer or copolymers, hard moldings having delustered surface can be obtained without conducting delustering operation.Type: GrantFiled: November 26, 1980Date of Patent: December 14, 1982Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Kazumasa Yamane, Masahiro Kobayashi, Masahiko Takada
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Patent number: 4303569Abstract: There is provided a process and apparatus for the coagulation of an aqueous latex of a polymer wherein the latex and an aqueous coagulant are mixed in a tubular coagulation means which is disposed at an angle of from about 20.degree. up to 90.degree. to the horizontal plane and the coagulated mixture is passed from the tubular coagulation means to a conduit equipped with an impingement plate and then to means for separation, recovery and drying of the coagulated polymer.Type: GrantFiled: December 5, 1979Date of Patent: December 1, 1981Assignee: Polysar LimitedInventors: Nur Guurak, Klaas Tebbens
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Patent number: 4302377Abstract: There is provided a process and apparatus for the coagulation of an aqueous latex of a polymer wherein the latex and an aqueous coagulant are mixed in a tubular coagulation means and the essentially completely coagulated mixture therefrom is passed into one or two vessels containing aqueous coagulant followed by separation, recovery and drying of the coagulated polymer.Type: GrantFiled: December 5, 1979Date of Patent: November 24, 1981Assignee: Polysar LimitedInventors: Nur Gurak, Klaas Tebbens
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Patent number: 4299952Abstract: Latex is shear coagulated to form a paste, the paste heated and sheared to form a desired crumb; the crumb is mechanically dewatered and ground to a desired particle size. Relatively low energy consumption is a feature of the process.Type: GrantFiled: March 24, 1980Date of Patent: November 10, 1981Assignee: The Dow Chemical CompanyInventors: Ronald J. Pingel, Geofrey P. Onifer, Thomas L. Spencer
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Patent number: 4284742Abstract: A puncture-sealing tubeless pneumatic tire having an inner layer of soft, tacky, extensible sealant consisting of (1) at least one vinylidene-terminated liquid polymer and (2) at least one amine.Type: GrantFiled: January 21, 1980Date of Patent: August 18, 1981Assignee: The B. F. Goodrich CompanyInventors: Harold H. Bowerman, Jr., Robert W. Ireland
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Patent number: 4263075Abstract: A puncture-sealing tubeless pneumatic tire having an inner layer of soft, tacky, extensible sealant consisting of (1) at least one vinylidene-terminated liquid polymer and (2) at least one amine.Type: GrantFiled: January 21, 1980Date of Patent: April 21, 1981Assignee: The B. F. Goodrich CompanyInventors: Harold H. Bowerman, Jr., Robert W. Ireland
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Patent number: 4255567Abstract: NBR containing at least 10% by weight of combined acrylonitrile is produced by polymerizing acrylonitrile and butadiene in emulsion in the presence of a linear alkyl sulfate mixture containing at least 60% by weight of a linear alkyl sulfate having 6 to 10 carbon atoms.Type: GrantFiled: February 13, 1979Date of Patent: March 10, 1981Assignee: Nippon Zeon Co. Ltd.Inventors: Nagatosh Sugi, Tetsu Ohishi
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Patent number: 4214619Abstract: A puncture-sealing tubeless pneumatic tire having an inner layer of soft, tacky, extensible sealant consisting of (1) at least one vinylidene-terminated liquid polymer and (2) at least one amine.Type: GrantFiled: April 28, 1977Date of Patent: July 29, 1980Assignee: The B. F. Goodrich CompanyInventors: Harold H. Bowerman, Jr., Robert W. Ireland