From Acrylonitrile Or Methacrylonitrile Monomer Patents (Class 524/565)
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Patent number: 7094824Abstract: The present invention discloses a rubbery polymer having improved properties, which is comprised of repeat units which are comprised of (a) butyl acrylate, or optionally a mixture of butyl acrylate and 2-ethylhexyl acrylate containing up to about 40 percent 2-ethylhexyl acrylate, (b) at least one member selected from the group consisting of methyl methacrylate, ethyl methacrylate, methyl acrylate, and ethyl acrylate, (c) optionally, about 0% to about 40% of an alkoxy ethyl acrylate or an alkoxy ethyl methacrylate, (d) acrylonitrile, (e) styrene, and (f) a crosslinking agent; wherein about 1% to about 10% of a monomer containing reactive cure sites selected from the group consisting of hydroxyl groups, glycidyl groups, carboxylic acid groups, and unsaturated cure sites is incorporated into the rubbery polymer.Type: GrantFiled: June 3, 2005Date of Patent: August 22, 2006Assignee: Eliokem S.A.S.Inventor: Hung Dang Ngoc
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Patent number: 7094825Abstract: A hydrogenated nitrile rubber composition, which comprises 100 parts by weight of hydrogenated nitrile rubber with a bound acrylonitrile content of not less than 30%, a polymer Mooney viscosity ML1+4(100° C.)(according to JIS K6395) of not more than 80 (median value) and an iodine number of not more than 28 (median value), and 65 to 200 parts by weight of carbon fibers is provided as a hydrogenated nitrile rubber composition containing carbon fibers as filled at a high density, which can overcome inconveniences as to kneadability and moldability and improve the wear resistance, and thus can be used as a suitable molding material for sealing members.Type: GrantFiled: December 19, 2003Date of Patent: August 22, 2006Assignee: NOK CorporationInventor: Takuya Yamanaka
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Patent number: 7041379Abstract: Elastomer coating composition are disclosed which cure at room temperature, and form highly flex-resistant, durable, and flexible protective layer on elastomers and provides excellent adhesion to elastomeric and metal substrates. The coating is a solvent solution of (A) a carboxylated hydrogenated acrylonitrile-butadiene copolymer, and (B) a room temperature isocyanate curing component. Coated bonded elastomer-metal composites are obtained without an additional application of heat to cure the coating.Type: GrantFiled: September 4, 2003Date of Patent: May 9, 2006Assignee: Lord CorporationInventors: James R. Halladay, Frank J. Krakowski
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Patent number: 6984686Abstract: The present invention discloses a rubbery polymer having improved properties, which is comprised of repeat units which are comprised of (a) butyl acrylate, or optionally a mixture of butyl acrylate and 2-ethylhexyl acrylate containing up to about 40 percent 2-ethylhexyl acrylate, (b) at least one member selected from the group consisting of methyl methacrylate, ethyl methacrylate, methyl acrylate, and ethyl acrylate, (c) optionally, about 0% to about 40% of an alkoxy ethyl acrylate or an alkoxy ethyl methacrylate, (d) acrylonitrile, (e) styrene, and (f) a crosslinking agent; wherein about 1% to about 10% of a monomer containing reactive cure sites selected from the group consisting of hydroxyl groups, glycidyl groups, carboxylic acid groups, and unsaturated cure sites is incorporated into the rubbery polymer.Type: GrantFiled: December 18, 2003Date of Patent: January 10, 2006Assignee: Eliokem S.A.S.Inventor: Hung Dang Ngoc
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Patent number: 6936644Abstract: An uncured epoxy adhesive comprising a resin component, a hardener component, and a microencapsulated accelerator component. The microencapsulated accelerator component comprises an infrared absorber, an accelerator and a wall that covers substantially the entire surface of the accelerator. The epoxy adhesive is cured by exposing it to infrared energy. The infrared energy is absorbed by the infrared absorber which disintegrates the wall and allows the accelerator to come into contact with the other adhesive components and initiate the curing polymerization reaction.Type: GrantFiled: October 16, 2002Date of Patent: August 30, 2005Assignee: Cookson Electronics, Inc.Inventor: Kenneth B. Gilleo
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Patent number: 6881798Abstract: Disclosed is a preparation method of an exfoliated nitropolymer/silicate nanocomposite by emulsion polymerization of monomers forming the polymer in an aqueous dispersion of non-modified, layered silicate in the presence of a reactive emulsifier having both a radical-polymerizable vinyl group and a functional group with affinity for silicate. In the process of the polymerization, silicate is fully exfoliated and uniformly dispersed in the polymer. Therefore, only a small amount of silicate is sufficient to improve thermal and mechanical properties of the polymer. Further, the method is advantageous in terms of a simple preparation process due to no use of organo-modified silicate, thus achieving an economic benefit.Type: GrantFiled: January 16, 2003Date of Patent: April 19, 2005Assignee: Samsung Atofina Co. Ltd.Inventors: Yeong Suk Choi, In Jae Chung, Sung Chul Kim
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Patent number: 6881774Abstract: Synthetic polymers which possess outstanding stability to oxidative, thermal or light-induced degradation comprise as stabilizer at least a compound of the formula I wherein R1 and R2 are each independently of one another hydrogen or C1-C8alkyl, R3 and R4 are each independently of one another C1-C12alkyl, and R5 is C1-C7alkyl.Type: GrantFiled: September 9, 2002Date of Patent: April 19, 2005Assignee: Ciba Specialty Chemicals Corp.Inventors: Kerstin Schrinner, Pascal Xanthopoulos
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Patent number: 6858656Abstract: Active water compatible actinic radiation curable printing ink or coating compositions comprised of maleimide derivatives, water compatible resins and water, which are capable of curing at a practical intensity and energy level and a method for curing same.Type: GrantFiled: August 27, 2003Date of Patent: February 22, 2005Assignee: Sun Chemical CorporationInventors: David Anthony Biro, Mikhail Laksin, Yoshinobu Sakurai, Hisatomo Yonehara, Katsuji Takahashi
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Patent number: 6849682Abstract: VOC components are retained within a substrate by coating the substrate with a composition to form an ionically crosslinked polymer matrix in a coating. Methods, compositions, coatings and articles that are coated are described.Type: GrantFiled: September 30, 2002Date of Patent: February 1, 2005Assignee: OMNOVA Solutions Inc.Inventor: Robert T. Sobieski
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Patent number: 6843939Abstract: This invention relates to an UV stabilizing additive composition comprising an ortho-hydroxy triazine compound, a hindered hydroxybenzoate compound and optionally a hindered amine compound. This additive composition may be used to stabilize materials from UV radiation. This invention also contemplates a method of stabilizing a material by contacting the material with the UV stabilizing additive composition.Type: GrantFiled: December 10, 2002Date of Patent: January 18, 2005Assignee: Cytec Technology Corp.Inventors: Joseph A. Stretanski, Brent M. Sanders
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Publication number: 20040247783Abstract: An aqueous copolymer composition containing copolymer particles containing polymerized units of (meth)acrylonitrile, (meth)acrylamide, or combinations thereof; and at least one unsaturated fatty acid ester is provided. A method is provided for preparing a coating from the aqueous copolymer composition. The aqueous copolymer composition is useful for preparing crosslinked coatings, suitable in coating applications such as architectural or maintenance paints.Type: ApplicationFiled: June 2, 2004Publication date: December 9, 2004Inventor: William J. Rosano
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Patent number: 6828387Abstract: The invention disclosed herein relates to an improved process for making elastomeric polyisoprene articles. In particular, the process of the invention is a system which produces synthetic polyisoprene articles exhibiting tensile strength properties similar to that of solvent-based processes using natural rubber latex. The process comprises an accelerator composition at the pre-cure stage comprising a dithiocarbamate, a thiazole and a guanidine compound. In a preferred embodiment, the accelerator composition comprises zinc diethyldithiocarbamate (ZDEC), zinc 2-mercaptobenzothiazole (ZMBT) and diphenyl guanidine (DPG), in conjunction with a stabilizer, such as sodium caseinate. The invention also includes an elastomeric polyisoprene product made by the process, such as a surgeon's glove.Type: GrantFiled: March 12, 2002Date of Patent: December 7, 2004Assignee: Allegiance CorporationInventors: Shiping Wang, Yun-Siung Tony Yeh, Randell Wenig, Wong Weicheong
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Patent number: 6828382Abstract: This invention relates to a jointing compound of an acrylate/acrylonitrile copolymer containing 2 to 8 carbon atoms in the alcohol component as binder and fatty compounds as plasticizer and also fillers and auxiliaries. Epoxystearic acid methyl ester in particular may be used as the fatty compound while a butyl acrylate/acrylonitrile copolymer in particular may be used as the acrylate/acrylonitrile copolymer. The combination of the two substances results in jointing compounds characterized by a dramatic improvement in elasticity (resilience). Accordingly, they are particularly suitable for substrates with different coefficients of thermal expansion.Type: GrantFiled: July 12, 2000Date of Patent: December 7, 2004Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Helmut Loth, Klaus Helpenstein, Wolfgang Klauck, Johann Klein, Lydia Duhm
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Patent number: 6818692Abstract: This invention pertains to rubber cement compositions containing a rubber elastomer, a tackifier, and an organic solvent that is not a hazardous air pollutant (HAP). This invention also includes the method of making this rubber cement composition and of using this adhesive to bond to surfaces together.Type: GrantFiled: September 4, 2002Date of Patent: November 16, 2004Assignee: W. W. Henry CompanyInventors: John W. Bulluck, Holly McKee
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Patent number: 6806315Abstract: A method for preparing a weatherable thermoplastic resin, having superior weatherability and colorability and a weatherable thermoplastic resin prepared by the method are provided. The method includes preparing a seed by adding a water-soluble initiator to either an aromatic vinyl compound or a (meth)acrylic acid alkyl ester to obtain a first compound and performing polymerization with respect to the first compound; preparing an alkyl acrylate rubber polymer by adding an alkyl acrylate monomer, a first emulsifier of pH about 3 to about 9, and an oil-soluble initiator to the seed to obtain a second compound and performing polymerization with respect to the second compound; and preparing graft copolymer by adding the aromatic vinyl compound, a vinyl cyanide compound, a second emulsifier of pH about 9 to about 13, and the oil-soluble initiator to the alkyl acrylate rubber polymer to obtain a third compound and performing graft copolymerization with respect to the third compound.Type: GrantFiled: March 4, 2003Date of Patent: October 19, 2004Assignee: LG Chem, Ltd.Inventors: Yang-Hyun Shin, Keun-Hoon Yoo, Tae-Bin Ahn, Chan-Hong Lee
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Patent number: 6784255Abstract: This invention relates to a rubber composition for extrusion and molding comprising 100 weight parts of ethylene/&agr;-olefin/non-conjugated polyene copolymer (A) composed of ethylene, &agr;-olefin having carbon atoms of 3-20 and non-conjugated polyene, and at least 30-300 weight parts of carbon black (B), and 1.0×10−5-5.0×10−3 mol of an alkoxysilane compound shown by the following formula (I): wherein, R is alkyl or alkoxy, R1 is alkyl or phenyl, n is 0, 1 or 2, R2 is a bivalent hydrocarbon, R3 is arylene group, m and p are 0 or 1 respectively, and m and p are not 0 at a same time, q is 1 or 2, and D is —SCN or —SH when q is 1, and —Sx— when q is 2 (wherein x is an integer of 2-8).Type: GrantFiled: June 3, 2002Date of Patent: August 31, 2004Assignees: Mitsui Chemicals Inc., Degussa AGInventors: Hidenari Nakahama, Yuji Ishii, Mikio Hosoya, Masaaki Kawasaki
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Publication number: 20040132886Abstract: The invention is directed to a new formulation for making a carboxylated polyacrylonitrile butadiene (usually referred to as nitrile in the glove industry) glove. The new formulation contains no accelerators commonly used in sulfur vulcanization. A sulfur free (including organic sulfur donors) crosslinking system is utilized. The invention provides formulations to make compounds and methods to make such gloves. The new formulations and procedures could be easily realized economically under common glove production lines. Depending on the desired applications, both powdered and powder free gloves are produced in the same formula.Type: ApplicationFiled: February 26, 2003Publication date: July 8, 2004Inventors: Jian Tao, Carrie Webster
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Patent number: 6756459Abstract: A binder composition for aqueous coatings that exhibit high gloss and superior corrosion resistance when applied to metal substrates comprising an aqueous emulsion copolymer, the copolymer including as polymerized units, at least one ethylenically unsaturated monomer and an ethylenically unsaturated strong acid monomer, such as phosphorus containing monomers, particularly phosphoethylmethacrylate; or salts thereof. Also provided is a method for achieving high gloss and superior corrosion resistance of metal substrates by coating a substrate with an aqueous coating composition comprising the binders of the present invention and drying, or allowing to dry, the aqueous composition.Type: GrantFiled: September 12, 2001Date of Patent: June 29, 2004Assignee: Rohm and Haas CompanyInventors: Gary Robert Larson, Leo Joseph Procopio, William Joseph Rosano, Otto C. Ziemann
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Patent number: 6756451Abstract: Process for the hydrogenation of a polymer composed of conjugated diene monomer units and a nitrile group-containing monomer units, in which hydrogenation is carried out in the presence of hydrazine, and an oxidizing compound, with the hydrogenation being carried out in the presence of a antioxidant. It is preferred for NBR to be used as polymer.Type: GrantFiled: January 7, 2002Date of Patent: June 29, 2004Assignee: DSM IP Assets B.V.Inventors: Johannes W. Belt, Olav M. Aagaard
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Patent number: 6737468Abstract: The use of a copolymer (A) preparable by free-radical polymerization of a) at least one olefinically unsaturated monomer and b) at least one olefinically unsaturated monomer different than the olefinically unsaturated monomer (a) and of the general formula I R1R2C=CR3R4 (I), in which the radicals R1, R2, R3 and R4 each independently of one another are hydrogen atoms or substituted or unsubstituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl, cycloalkylaryl, arylalkyl or arylcycloalkyl radicals, with the proviso that at least two of the variables R1, R2, R3 and R4 are substituted or unsubstituted aryl, arylalkyl or arylcycloalkyl radicals, especially substituted or unsubstituted aryl radicals, in an aqueous medium, in a basecoat material used to produce color and/or effect basecoats BL and multicoat color and/or effect coating systems ML.Type: GrantFiled: January 11, 2002Date of Patent: May 18, 2004Assignee: BASF Coatings AGInventor: Wolfgang Bremser
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Publication number: 20040072944Abstract: The invention relates to the use of antimicrobial polymers in reactive formulations and to the use of said reactive formulations.Type: ApplicationFiled: July 17, 2003Publication date: April 15, 2004Inventors: Peter Ottersbach, Friedrich Sosna
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Publication number: 20040063845Abstract: A method of preparing thickened compositions which can be molded under low pressures and temperatures to provide thermoset articles, wherein liquid reactive components are slowly absorbed in solid thermoplastic elastomer thickeners such as thermoplastic ionomers and acrylic block copolymers. The thickener delays the viscosity build, allowing fiber reinforcement and other fillers to be incorporated, if desired, before molding. The molding composition is well suited for use in dentistry and other fields where small amounts or molding composition are used occasionally.Type: ApplicationFiled: June 27, 2003Publication date: April 1, 2004Applicant: REINFORCED POLYMERS, INC.Inventor: Robert Guzauskas
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Patent number: 6709758Abstract: Elastomer coating composition are disclosed which cure at room temperature, and form highly flex-resistant, durable, and flexible protective layer on elastomers and provides excellent adhesion to elastomeric and metal substrates. The coating is a solvent solution of (A) a carboxylated hydrogenated acrylonitrile-butadiene copolymer, and (B) a room temperature isocyanate curing component. Coated bonded elastomer-metal composites are obtained without an additional application of heat to cure the coating.Type: GrantFiled: November 9, 2001Date of Patent: March 23, 2004Assignee: Lord CorporationInventors: James R. Halladay, Frank J. Krakowski
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Patent number: 6706777Abstract: Active water compatible energy curable compositions comprised of maleimide derivatives, water compatible resins and water which are capable of curing at a practical intensity and energy level and a method for curing same.Type: GrantFiled: July 23, 2001Date of Patent: March 16, 2004Assignee: Sun Chemical CorporationInventors: David Anthony Biro, Mikhail Laksin, Yoshinobu Sakurai, Hisatomo Yonehara, Katsuji Takahashi
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Patent number: 6703470Abstract: An objective of the invention is to provide a conjugated diene-based rubber having a specific composition and an oil extended rubber using the same, as well as a rubber composition capable of being converted into a vulcanized rubber which has a low rolling resistance, an excellent wearing resistance and the like, and is useful for a tire or the like. A conjugated diene-based rubber in the invention has repeating units consisting of 1 to 30% by mass of an olefinically unsaturated nitrile monomer unit such as acrylonitrile, 10 to 50% by mass of an aromatic vinyl monomer unit such as styrene, 19.9 to 88.9% by mass of a conjugated diene monomer unit such as 1,3-butadiene and 0.1 to 10% by mass of a monomer unit having one polymerizable unsaturated group and at least one functional group selected from the group consisting of an amino group, a hydroxyl group, an epoxy group, a carboxyl group and an alkoxysilyl group, and has a specific glass transition point and a Mooney viscosity [ML1+4(100° C.Type: GrantFiled: August 29, 2001Date of Patent: March 9, 2004Assignee: JSR CorporationInventors: Tomohisa Konno, Yoshiyuki Udagawa, Toshihiro Tadaki
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Patent number: 6696518Abstract: The present invention relates to a process for hydrogenating ethylenically unsaturated double bonds in polymers P by reacting an aqueous dispersion of at least one polymer P with hydrogen in the presence of at least one hydrogenation catalyst comprising at least one transition metal selected from rhodium and/or ruthenium and at least one nonionic phosphorus compound capable of forming a coordinative compound with the transition metal, which comprises incorporating the hydrogenation catalyst into the aqueous dispersion of the polymer P without adding a solvent. The present invention also relates to the aqueous dispersions of the hydrogenated polymers P obtainable by this process and to coating compositions comprising such dispersions.Type: GrantFiled: November 27, 2001Date of Patent: February 24, 2004Assignee: BASF AktiengesellschaftInventors: Rolf Dersch, Heiko Maas, Volker Schädler
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Publication number: 20030236355Abstract: A rubber composition comprising a nitrile rubber and incorporated therein an organic sulfonic acid salt. A vulcanized rubber article obtained by vulcanization of the rubber composition exhibits a reduced deterioration in tensile strength and elongation when kept in a hot-temperature air atmosphere.Type: ApplicationFiled: May 12, 2003Publication date: December 25, 2003Inventors: Yoshiaki Aimura, Suguru Ito
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Patent number: 6656857Abstract: A composite barrier membrane coated on a substrate and membrane is formed by phase inversion technique utilizing a water-insoluble wax and a water-insoluble polymer dissolved in a solvent. The barrier membrane coated upon the substrate is used to control transmembrane transport of a liquid and a gas. The substrate can be a starch based food package material, a protein based food package materials, a natural fabric, a synthetic fabric, or a paper product.Type: GrantFiled: March 1, 1999Date of Patent: December 2, 2003Assignee: Natural Polymer International CorporationInventor: Kangzhuang Jian
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Publication number: 20030204013Abstract: A latex emulsion that includes crosslinked polymeric microparticles dispersed in an aqueous continuous phase. The microparticles are prepared from a monomer mix of a crosslinking monomer, a monomer having hydrophilic functional groups, and one or more other monomers. Also disclosed is a thermosetting composition that includes a first reactant that has reactive functional groups; a curing agent that has at least two functional groups reactive with the functional groups of the first reactant; and the latex emulsion of crosslinked polymeric microparticles dispersed in an aqueous continuous phase. The thermosetting composition may be used to coat a substrate. The coating may be a multi-layer composite coating that includes a base coat layer deposited from a pigmented film-forming base coat composition containing the thermosetting composition; and a substantially pigment free top coat layer deposited over a portion of the base coat layer from a substantially pigment free top coat composition.Type: ApplicationFiled: April 19, 2002Publication date: October 30, 2003Inventors: Shanti Swarup, Brian Endlich, M. Frank Haley, Charles M. Kania, Kurt G. Olson, Edward S. Pagac, Kaliappa G. Ragunathan
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Patent number: 6635718Abstract: Process for the preparation of a hydrogenated polymer composed of conjugated diene monomer units and monomer units containing a nitrile group, wherein the hydrogenation is carried out in the presence of hydrazine, an oxidizing compound and a metal compound as catalyst, a metal compound containing a metal atom in an oxidation state of at least 4 being used as catalyst.Type: GrantFiled: July 26, 2002Date of Patent: October 21, 2003Assignee: DSM N.V.Inventors: Johannes Wilhelmus Belt, Marcus Matheus Driessen
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Patent number: 6627681Abstract: The method of decreasing unreacted monomer in vinyl polymer of the present invention is a method comprising adding a water-soluble inorganic salt that is able to solubilize unreacted monomer contained in vinyl polymer to an aqueous dispersion in which particles of vinyl polymer are dispersed in an aqueous medium, followed by solubilizing the unreacted monomer and removing the unreacted monomer together with the aqueous medium. According to this method, the amount of unreacted monomer present in a polymer can be efficiently and reliably decreased at low cost without requiring a special apparatus or thermal energy, etc. In addition, the toner resin of the present invention has for its constituent component a vinyl polymer in which the amount of unreacted monomer has been decreased by the method described above.Type: GrantFiled: August 16, 2001Date of Patent: September 30, 2003Assignee: Fujikura Kasei Co., Ltd.Inventors: Hikoji Ueda, Masamitsu Mogi, Masao Watanabe, Yutaka Kukimoto
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Publication number: 20030176566Abstract: A substrate for ink-jet printing which is coated or impregnated with a water dissipatable nitrile polymer having a Mn of less than 25,000 comprising 5 to 70% w/w of nitrile monomers. Also processes for ink-jet printing and printed substrates.Type: ApplicationFiled: February 12, 2003Publication date: September 18, 2003Inventors: Paul Wight, Philip MacFaul, Stephen George Yeates, Tom Annable
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Publication number: 20030166789Abstract: A vulcanizable nitrile rubber composition comprising 100 parts by weight of a nitrile rubber, 0.1 to 20 parts by weight of a metal silicate and 0.1 to 10 parts by weight of a vulcanizing agent. Vulcanization of this vulcanizable rubber composition gives a vulcanizate exhibiting enhanced heating aging resistance when it is kept in a hot air atmosphere, especially at a high temperature.Type: ApplicationFiled: March 6, 2003Publication date: September 4, 2003Inventors: Yoshiaki Aimura, Suguru Ito
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Patent number: 6590040Abstract: A process for producing a superabsorbent polymer is described. The process that entails a continuous hydrolysis of an aqueous emulsion of crosslinked or uncrosslinked polyacrylonitrile in the form of fine particles is carried out in a cascade of stirred tanks. The reaction with alkali-hydroxide solution an aqueous-alcoholic medium at 60 to 100° C. yields polymers that are suitable for the preparation of hygiene products, water-storing materials in agriculture, and sheathing of electrical cables.Type: GrantFiled: June 11, 2001Date of Patent: July 8, 2003Assignee: Bayer AktiengesellschaftInventors: Günter Sackmann, Rolf-Volker Meyer, Sergei Schapowalow, Telman Bayburdov, Jgor Nakonetschny
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Publication number: 20030119960Abstract: A rubber composition is disclosed wherein the rubber composition contains at least (a) a rubber component; (b) a silica filler; (c) a coupling agent; and (d) a cure-enhancing amount of at least one polyalkylene oxide having a weight average molecular weight less than 200. The compositions may also include suitable amounts of other ingredients such as carbon black, antiozonants, antioxidants, etc.Type: ApplicationFiled: September 4, 2001Publication date: June 26, 2003Inventors: Sung W. Hong, Martin J. Hannon, Peter K. Greene
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Publication number: 20030095914Abstract: Processes for preparing a carbon black product having an organic group attached to the carbon black. In one process at least one diazonium salt reacts with a carbon black in the absence of an externally applied electric current sufficient to reduce the diazonium salt. In another process at least one diazonium salt reacts with a carbon black in a protic reaction medium. Carbon black products which may be prepared according to process of the invention are described as well as uses of such carbon black products in plastic compositions, rubber compositions, paper compositions, and textile compositions.Type: ApplicationFiled: May 3, 2002Publication date: May 22, 2003Inventors: James A. Belmont, Robert M. Amici, Collin P. Galloway
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Patent number: 6562929Abstract: An objective of the invention is to provide a conjugated diene-based rubber having a specific composition and a method of producing the same, an oil extended rubber using the same, as well as a rubber composition capable of being converted into a vulcanized rubber which has a low rolling resistance, an excellent wearing resistance and the like, and is useful, for example, as a tire or the like. A conjugated diene-based rubber in the invention has a glass transition point of −60 to 0° C., an olefinically unsaturated nitrile monomer unit randomly contains in its molecular chain, its repeating units consists of 9 to 30% by mass of an olefinically unsaturated nitrile monomer unit such as acrylonitrile, 10 to 50% by mass of an aromatic vinyl monomer unit such as styrene and 20 to 81% by mass of a conjugated diene monomer unit such as 1,3-butadiene, and its Mooney viscosity [ML1+4(100° C.)] is 20 to 200.Type: GrantFiled: August 29, 2001Date of Patent: May 13, 2003Assignee: JSR CorporationInventors: Tomohisa Konno, Yoshiyuki Udagawa, Toshihiro Tadaki
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Patent number: 6531223Abstract: A water based coating composition which does not require a primer for application over wood, masonry, metal, vinyl siding and previously painted surfaces and can be applied over these surfaces in a single coat to provide the tannin blocking, hiding, corrosion resistance and durability of a conventional primer plus two coats of latex paint.Type: GrantFiled: April 16, 2001Date of Patent: March 11, 2003Assignee: The Sherwin-Williams CompanyInventors: Darlene D. Rota, Lorette Madigan, Elizabeth C. Bell, Robert A. Martuch
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Patent number: 6525110Abstract: A rubber composition having improved properties containing a starting rubber (e.g., diene rubber) and a polysiloxane having the following alkoxysilyl group (I) and/or acyloxysilyl group (II) and having an average degree of polymerization of 3 to 10,000: ≡Si—OR1 (I) ≡Si—OCOR2 (II) wherein, R1 is a substituted or unsubstituted monovalent hydrocarbon group having 1 to 18 carbon atoms or an organic group containing an ether bond and R2 is hydrogen or a hydrocarbon group having 1 to 21 carbon atoms.Type: GrantFiled: November 16, 2000Date of Patent: February 25, 2003Assignee: The Yokohama Rubber Co., Ltd.Inventors: Fumito Yatsuyanagi, Kazunori Ishikawa, Yoshiaki Hashimura, Tetsuji Kawazura, Hiroyuki Kaido
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Patent number: 6498223Abstract: An objective of the present invention is to provide an unsaturated nitrile-conjugated diene-typed rubber capable of giving a vulcanized rubber which exhibits is well-balanced in terms of the mechanical strength, the oil resistance and the like, as well as a process for the production of the same, and a rubber composition which is containing such rubber and exhibits an excellent processability as well as a process for the production of the same. The unsaturated nitrile-conjugated diene-typed rubber in the invention is produced by polymerizing using certain amounts of an olefinically unsaturated nitrile monomer such as acrylonitrile and a conjugated diene monomer such as butadiene at first, and continuing by supplying a remainder of the monomers at a certain ratio continuously or stepwise to proceed the polymerization.Type: GrantFiled: November 13, 2001Date of Patent: December 24, 2002Assignee: JSR CorporationInventors: Katsuhiko Sakata, Osamu Ishikawa
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Patent number: 6492446Abstract: A latex compound for dip molding, which can be used for production of a high-quality dip-molded product that is excellent in oil resistance and mechanical strength, has uniform film thickness and soft feeling to the skin and is free of pinholes, as is required for gloves etc. especially in the medical fields, and assumes no stickiness on the surface of the molded product after molding. This object is attained by a latex compound for dip molding which comprises a copolymer latex (L) obtained by emulsion polymerization of a monomer mixture and 0.05 to 5.0 parts by weight of a bubble breaker (A) consisting of a C8-22 fatty acid or a salt thereof, and if necessary, 0.1 to 5.0 parts by weight of a di C5-12 alkyl sulfosuccinate salt (B) and/or 0.5 to 10.0 parts by weight of a C13-20 alkyl benzene sulfonate (C) per 100 parts by weight of the monomer mixture.Type: GrantFiled: June 16, 2000Date of Patent: December 10, 2002Assignee: Takeda Chemical Industries, Ltd.Inventors: Yuichiro Kajiwara, Masaaki Tsuji, Shigeo Suzuki, Takashi Suetsugu, Hiroshi Ban
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Patent number: 6489385Abstract: A highly saturated nitrile group-containing copolymer rubber having a Mooney viscosity lowered by 15 points or more by applying a high shearing force thereto in the presence of an aging inhibitor, which has a Mooney viscosity of 5-35 and a weight average molecular weight/number average molecular weight ratio of 3-5, and exhibits an increase in Mooney viscosity of 10 points or fewer while the rubber is allowed to stand in the air at room temperature for 30 days. The viscosity of the copolymer rubber changes only to a minor extent with the lapse of time, and the copolymer rubber has excellent processability and storage stability. The copolymer rubber can be used as a heat-resistant rubber composition comprising the copolymer rubber and other heat-resistant rubber. The copolymer rubber can be used as a composite thereof with a fiber, which has good mechanical strength.Type: GrantFiled: May 20, 1999Date of Patent: December 3, 2002Assignee: Nippon Zeon Co., Ltd.Inventors: Yoshinori Fujii, Atsumi Ikeda
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Publication number: 20020147266Abstract: The present invention provides rubber mixtures which contain at least one NSBR terpolymer and at least one polar synthetic plasticizer, a process for the preparation thereof and their use to produce rubber molded items of all kinds.Type: ApplicationFiled: January 25, 2002Publication date: October 10, 2002Inventors: Adrian Rawlinson, Rudiger Engehausen, Peter Wendling
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Patent number: 6447697Abstract: A colorized fire retardant composition comprising a fire retardant and a colorant, wherein the colorant is an aqueous dispersion of a pigment formed by polymerizing at least one monomer in the presence of at least one dye. The composition is particularly useful in combating and controlling fires by discharging the composition towards the fuel, or potential fuel, of a fire.Type: GrantFiled: March 3, 1999Date of Patent: September 10, 2002Assignee: Astaris, LLCInventor: Howard L. Vandersall
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Patent number: 6410638Abstract: A light-stable, sinterable particulate thermoplastic molding composition is described. The thermoplastic compositions of the present invention consist essentially of: (i) a resinous blend of, (a) thermoplastic polyurethane, and (b) a member selected from at least one of a number of recited copolymers, e.g., a styrene-acrylonitrile copolymer; (ii) a UV stabilizer; and (iii) an antioxidant. The thermoplastic polyurethane (a) is prepared from an aliphatic or cycloaliphatic diisocyanate. The molding compositions are suitable for the preparation of textured sintered films, e.g., by the powder-slush process, having improved tactile properties that, for example, may be used in the fabrication of vehicle interior trim components and vehicle air bags.Type: GrantFiled: April 26, 2000Date of Patent: June 25, 2002Assignees: Bayer Aktiengesellschaft, Benecke-Kaliko AktiengesellschaftInventors: Wolfgang Kaufhold, Hans-Georg Hoppe, Rainer Ohlinger, Jürgen Bühring
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Patent number: 6403727Abstract: A process for selectively hydrogenating ethylenically unsaturated double bonds in polymers P involves reacting the polymers P with hydrogen in the presence of at least one hydrogenation catalyst selected from the salts and complex compounds of rhodium and/or of ruthenium in an aqueous dispersion of the polymers P that comprises not more than 20% by volume of an organic solvent. This process can be used to give hydrogenated polymer dispersions and, from these dispersions, polymers. Also claimed are aqueous polymer dispersions comprising polymers P′, which include structural units I, II and III as in claim 10, with or without structural units IV and/or V as in claim 11.Type: GrantFiled: June 1, 2000Date of Patent: June 11, 2002Assignee: BASF AktiengesellschaftInventors: Hartmann F. Leube, Jürgen Schmidt-Thümmes, Edgar Zeller, Heiko Maas
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Patent number: 6391963Abstract: A plasticizer having a specific SP value and a specific molecular weight is added to NBR having a specific AN content in an ultrahigh range, or a blend of such NBR and less than 25 percent by weight of PVC so that a good balance may be obtained between its amount and the AN content of the NBR. A fuel hose for a vehicle having an inner wall layer formed from such a rubber composition and an outer wall layer formed from a rubber material having ozone resistance or cure flatting resistance is provided. The rubber composition is of good fuel impermeability and low temperature properties and also has a high conductivity. The hose is of good fuel impermeability and low temperature properties and also has a high conductivity.Type: GrantFiled: May 25, 2001Date of Patent: May 21, 2002Assignee: Tokai Rubber Industries, Ltd.Inventor: Takahiro Nishiyama
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Patent number: 6387296Abstract: Paper coating slips having high whiteness, high greying limit and high lightfastness can be prepared with the aid of whitened finely divided plastics.Type: GrantFiled: June 27, 1997Date of Patent: May 14, 2002Assignee: Bayer AktiengesellschaftInventors: Udo Eckstein, Joachim König, Fritz Puchner, Ulrich Feldhues, Matthias Köcher, Uwe Vogt, Eckhard Wenderoth
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Patent number: 6372843Abstract: The present invention relates to a process for preparing multifunctionalized polyorganosiloxanes (POSs) comprising alkoxyl functional siloxyl units and siloxyl units each having an SH functional group, which consists in introducing the SH functional group by the reaction of H2S on a precursor POS of formula: A—(RXSiO)a—(RYSiO)b—B where R is especially a C1-C6 alkyl radical, X is a C1-C15 alkoxyl radical, Y is a C2-C30 hydrocarbon group which includes an ethylenically unsaturated group from which the SH functionality derives, a is a number ranging from 1 to 150, b is a number ranging from 1 to 150, the number a+b ranging from 2 to 300 and A and B are terminal groups which are selected respectively, from, in particular, on the one hand (R)3SiO— radicals taken alone or as mixtures with (R)2XSiO— and/or R(X)2SiO— and/or (X)3SiO— radicals and on the other hand —Si(R)3 radicals taken alone or as mixtures with —SiX(R)2 and/or —Si(X)2R and/or —Si(Type: GrantFiled: April 19, 2000Date of Patent: April 16, 2002Assignee: Rhodia ChimieInventors: Pierre Barruel, Yves Bomal, Nathalie Guennouni, Gerard Mignani, Christian Priou
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Patent number: 6372856Abstract: A dip-formed rubber article is produced by dip-forming a vulcanizable rubber latex composition comprising an unsaturated nitrile-conjugated diene copolymer rubber latex, a sulfur-containing vulcanizer, and at least one vulcanization accelerator selected from (i) dithiocarbamic acid compounds of the formula (1): wherein R1 and R2 independently represent and hydrocarbon group having at least 6 carbon atoms, and (ii) zinc dithiocarbamate compounds of the formula (2): wherein R1 and R2 are as defined above.Type: GrantFiled: January 16, 2001Date of Patent: April 16, 2002Assignee: Nippon Zeon Co., Ltd.Inventors: Yutaka Ozawa, Hisanori Ohta