Tin Patents (Class 524/784)
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Patent number: 5973061Abstract: Aqueous silicone dispersions crosslinkable into elastomeric state by elimination of water therefrom, well adapted for the production of elastomer seals, e.g., for the building industry, include:(A) 100 parts by weight of an oil-in-water emulsion of an .alpha.,.omega.-(dihydroxy)polydiorganosiloxane stabilized with at least one anionic or nonionic surface-active agent, or mixture thereof;(B) 1 to 100 parts by weight of an hydroxylated silicone resin containing, per molecule, at least two different recurring structural units selected from among those of the formulae: R.sub.3 SiO.sub.0.5, R.sub.2 SiO, RSiO.sub.1.5 and SiO.sub.2, wherein the radicals R, which may be identical or different, are vinyl, phenyl or 3,3,3-trifluoropropyl radicals, or linear or branched chain alkyl radicals containing from 1 to 6 carbon atoms, said resin having a hydroxyl group weight content of from 0.1% to 10%;(C) 0 to 250 parts by weight of a nonsiliceous inorganic filler;(D) 0.Type: GrantFiled: February 28, 1991Date of Patent: October 26, 1999Assignee: Rhone-Poulenc ChimieInventors: Michel Feder, Jean Ulrich
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Patent number: 5891985Abstract: A soluble mono-alkyl Stannoic Acid/glycol liquid phase catalyst produced from the reaction of a mono-alkyl Stannoic Acid and a glycol at a temperature of from at least 180.degree. C., and its use in preparing high molecular weight polyester polymers.Type: GrantFiled: October 1, 1997Date of Patent: April 6, 1999Assignee: E. I. du Pont de Nemours and CompanyInventor: Edward Gus Brugel
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Patent number: 5886093Abstract: The invention relates to a method for preparing a biodegradable aliphatic polyester, which comprises polymerization of a precursor of the polyester in the presence of a polyesterification catalyst in an amount of up to 0.1% by weight, based on the weight of the cyclic precursor, and a co-catalyst comprising glycerol or butyrolactone in a weight proportion of not more than three times that of the catalyst.The invention also relates to the use of the resulting biodegradable aliphatic polyester in polymer processing, such as injection molding or compression/press molding.Type: GrantFiled: May 28, 1998Date of Patent: March 23, 1999Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Martin Thomas Davies, Naseer Mohammed Qureshi, Barry Woodfine, Barry Keane
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Patent number: 5852164Abstract: A polyester comprises a dicarboxylic acid moiety comprising terephthalic acid or its ester forming derivative and a diol moiety comprising ethylene glycol and 1,4-cyclohexanedimethanol of 10 to 60 mol % based on the whole diol moiety, the intrinsic viscosity of the polyester being 0.68 to 0.95 dl/g, the "b" value of color tone of the produced pellets of polyester being -5 to 5, the number of the carboxylic acid terminals being not more than 30 eq/ton, and the sum of the numbers of the vinyl terminals, the vinylidene terminals and the methylcyclohexene terminals being not more than 25 eq/ton.Type: GrantFiled: April 15, 1997Date of Patent: December 22, 1998Assignee: Mitsubishi Chemical CorporationInventors: Hideko Akai, Katsuji Tanaka, Masahiko Fujimoto, Noboru Sato
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Patent number: 5849864Abstract: The present invention is addressed a formulation curable in the presence of an amine and containing one or more of a polyol or polymercapto resin, a polyisocyanate cross-linking agent, optionally a organic vehicle, and a tin catalyst complex. The present invention comprises the catalyst complex being formed from a metal catalyst and a complexing sulfonic acid in an equivalent ratio of complexing sulfonic acid to metal catalyst of greater than 2:1. Such curable formulation may be compounded into a coating, an adhesive (including a structural adhesive), a caulk, a foundry binder, or the like. Besides having excellent shelf life, long periods of open time are experienced with the novel catalyzed formulation. However, upon exposure to an amine, the catalyst complex becomes activated and then is effective to catalyze the NCO--OH reaction or the NCO--SH reaction to effect cure of the formulation.Type: GrantFiled: August 1, 1996Date of Patent: December 15, 1998Assignee: Ashland Chemical CompanyInventors: Gary M. Carlson, Laurence G. Dammann
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Patent number: 5847070Abstract: New compounds including bis-.beta.-hydroxy ethyl bibenzoate containing less than 2.5%, and preferably less than 1%, diethylene glycol and a process for the production of the bis-.beta.-hydroxy ethyl bibenzoate by the condensation of 4,4'-biphenyl dicarboxylic acid and ethylene glycol at low temperature and pressure in the presence of a catalyst are disclosed. Use of the compounds to produce polyesters is also disclosed.Type: GrantFiled: December 1, 1994Date of Patent: December 8, 1998Assignee: Monsanto CompanyInventors: Jawed Asrar, David J. Weinkauff, A. Hameed Bhombal
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Patent number: 5770659Abstract: Processes for making storage-stable epoxy-capped polyetherester resins are disclosed. In one process, a polyetherester resin is first made by inserting a carboxylic acid derivative into a polyether. Reacting the resin with a capping agent gives an intermediate resin with a reduced content of free carboxylic acid groups. Finally, the intermediate resin reacts with an epoxy compound in the presence of a finishing catalyst under conditions effective to give an epoxy-capped resin. The resins have low weight average molecular weights (less than about 8000), narrow molecular weight distributions (less than 6), and low viscosities, making them an excellent choice for low-VOC formulations. The finishing catalyst helps to minimize resin viscosity drift and improves shelf stability. Curing the resins with a vinyl monomer gives thermosets with an excellent balance of physical properties, including excellent water resistance.Type: GrantFiled: November 10, 1997Date of Patent: June 23, 1998Assignee: Arco Chemical Technology, L.P.Inventors: Gangfeng Cai, Daniel M. Trauth, Lau S. Yang
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Patent number: 5741882Abstract: A process to prepare a high molecular weight aliphatic polyester is disclosed, where a catalyst is portionwise added, and a radical scavenger is also added. The aliphatic polyester obtained has a number average molecular weight larger than 70,000.Type: GrantFiled: September 21, 1995Date of Patent: April 21, 1998Assignee: Tonen CorporationInventors: Takeaki Fujii, Kenji Kobayashi, Sadakatsu Suzuki, Hiroshi Ueno
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Patent number: 5710203Abstract: Disclosed are compositions which can be used to form tamper-proof coatings on electronic devices. These compositions contain a silica precursor resin and a filler which reacts in an oxidizing atmosphere to liberate heat. Such compositions form coatings which, when oxidized by techniques such as plasma etching, wet etching, or cross-sectioning, liberate heat which causes destruction of the underlying substrate and, thus, inhibits further examination.Type: GrantFiled: November 7, 1994Date of Patent: January 20, 1998Assignee: Dow Corning CorporationInventors: Robert Charles Camilletti, Loren Andrew Haluska, Keith Winton Michael
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Patent number: 5705098Abstract: The invention provides acicular electroconductive tin oxide fine particles which has a mean diameter of 0.005-1 .mu.m and a mean length of 0.05-10 .mu.m and an aspect ratio of 3 or higher. The invention further provides a process for producing the acicular electroconductive tin oxide fine particles, which comprises firing a starting material containing tin, silicon and an alkali metal halide at 700.degree.-1200.degree. C and removing soluble salts from the resulting fired product.Type: GrantFiled: July 29, 1996Date of Patent: January 6, 1998Assignee: Ishihara Sanayo Kaisha, Ltd.Inventors: Haruo Okuda, Hideo Futamata, Hideo Takahashi, Norihiko Sanefuji
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Patent number: 5693722Abstract: A process is disclosed whereby a polymeric resin (containing ester and/or carbonate bonds) is readily converted into a resin having a modified molecular structure. Accordingly, a polycyclic carbonate (a monomer or oligomer) is transesterified with the polymer resin in the melt, preferably upon extrusion, optionally in the presence of a catalyst. Significantly, the cyclic carbonates are, by the inventive process, inserted into the structure of the polymer, effecting branching of the molecular structure, a branching which manifests itself in the modified properties of the resin.Type: GrantFiled: December 13, 1996Date of Patent: December 2, 1997Assignees: Bayer Corporation, Bayer AktiengesellschaftInventors: Duane B. Priddy, Jr., Burkhard Kohler, Robert J. Kumpf, Harald Pielartzik
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Patent number: 5688862Abstract: In a semiconductive silicone elastomer composition comprising an organopolysiloxane containing at least two aliphatic unsaturated hydrocarbon groups attached to a silicon atom, an organohydrogenpolysiloxane containing at least two hydrogen atoms attached to a silicon atom, and a conductive agent, the conductive agent consists of 1-10 wt % of conductive carbon and 99-90 wt % of a conductive filler having a volume resistivity of 10.sup.1 -10.sup.8 .OMEGA.-cm other than the conductive carbon. The conductive agent is blended in an amount of 20-60 wt % of the entire composition. The composition having the conductive agent uniformly dispersed therein yields a semiconductive silicone elastomer having a volume resistivity of 10.sup.5 -10.sup.10 .OMEGA.-cm with a dispersity of 1 to 10.Type: GrantFiled: October 10, 1995Date of Patent: November 18, 1997Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takashi Kondou, Takeo Yoshida, Hajime Saito
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Patent number: 5648454Abstract: A process for making high ductile and high melting point polyesters comprising the step of contacting macrocyclic copolyester oligomers having structural units with C.sub.4 alkylene bridging radicals and structural units with bridging radicals other than C.sub.4 alkylenes, and a polymerization catalysts.Type: GrantFiled: February 14, 1996Date of Patent: July 15, 1997Assignee: General Electric CompanyInventor: Daniel Joseph Brunelle
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Patent number: 5612444Abstract: A two-step process for making polyetherester resins is disclosed. A low molecular weight polyol reacts with an aromatic dicarboxylic acid in step one to produce a polyester intermediate. In step two, the polyester intermediate reacts with an anhydride or an aliphatic dicarboxylic acid in the presence of an insertion catalyst to produce a polyetherester resin that contains greater than about 10 wt. % of recurring units derived from the aromatic dicarboxylic acid. The polyetheresters are useful for making thermoset resins with excellent mechanical properties and chemical resistance.Type: GrantFiled: March 28, 1995Date of Patent: March 18, 1997Assignee: ARCO Chemical Technology, L.P.Inventors: Gangfeng Cai, Lau S. Yang, Jeffrey A. Klang
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Patent number: 5610205Abstract: A process for making polyetheresters is disclosed. A polyether is reacted with a carboxylic acid in the presence of a strong protic acid or a metal salt of a strong protic acid to promote insertion of the carboxylic acid into polyether carbon-oxygen bonds to produce a polyetherester. The polyetheresters are useful for various applications in the polyurethane and unsaturated polyester industries.Type: GrantFiled: May 14, 1996Date of Patent: March 11, 1997Assignee: ARCO Chemical Technology, L.P.Inventors: Lau S. Yang, Jeffrey A. Klang
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Patent number: 5605981Abstract: The present invention provides a process for the preparation of a decomposable lactic copolymer polyester which exhibits a sufficiently high molecular weight, heat resistance and thermal stability and further exhibits a rigidity, flexibility and transparency depending on the purpose. The process for the preparation of a high molecular lactic copolymer polyester includes reacting a polyester terminated by hydroxyl group at both ends (B1) with a polyvalent isocyanate (E) having 2 or more functionalities to obtain a polyester (B4) having a weight-average molecular weight of from 10,000 to 300,000, and then allowing said polyester (B4) and lactide (A) to undergo ring opening copolymerization in the presence of a ring opening polymerization catalyst (D).Type: GrantFiled: June 28, 1996Date of Patent: February 25, 1997Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Shoji Imamura, Hiroshi Ebato
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Patent number: 5605979Abstract: A process is disclosed whereby a polymeric resin (containing ester and/or carbonate bonds) is readily converted into a resin having a modified molecular structure. Accordingly, a cyclic carbonate (a monomer or oligomer) is transesterified with the polymer resin in the melt, preferably upon extrusion, optionally in the presence of a catalyst. Significantly, the cyclic carbonate which may include any of a variety of functional groups may, by the inventive process, be inserted into the structure of the polymer, effecting a modification to the structure and the properties of the resin. Among the disclosed beneficial modifications thus imparted to the resin are improved thermal stability, altered rheology and optical properties.Type: GrantFiled: May 22, 1995Date of Patent: February 25, 1997Assignee: Bayer CorporationInventors: Duane B. Priddy, Jr., Robert J. Kumpf
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Patent number: 5596068Abstract: The invention relates to a polyester resin for producing a thick-walled bottles having high transparency and a neutral color. The polyester resin, containing at least one antimony compound, one germanium compound and one phosphorus compound, is produced by reacting a dicarboxylic acid with polyhydric alcohols and also contains cyclohexane dimentanol. The polyhydric alcohols are a mixture of ethylene glycol and at least 0.5% cyclohexane dimethanol. The result, more particularly, is a low rate of crystallization for obtaining thick-walled hollow members.Type: GrantFiled: February 14, 1995Date of Patent: January 21, 1997Assignee: John Brown Deutsche Engineering GmbHInventors: Wolfgang Kramer, Wilhelm W ullscheidt, Theodor J urgens, Klaus Kleinecke, Rudolf Geier
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Patent number: 5574129Abstract: A process for producing polylactic acid includes the steps of polycondensing lactic acid to a lactic acid prepolymer having a weight-average molecular weight of 10,000-50,000 in a batch-type polymerization reactor, and polycondensing the lactic acid prepolymer to lactic acid polymer having a weight-average molecular weight of at least 100,000 by means of a screw-type extruder.Type: GrantFiled: May 5, 1995Date of Patent: November 12, 1996Assignee: The Japan Steel Works, Ltd.Inventors: Rika Miyoshi, Tadamoto Sakai, Noriaki Hashimoto, Yukihiro Sumihiro, Kayoko Yokota, Kunihiko Koyanagi
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Patent number: 5512653Abstract: A preparation process of polyhydroxycarboxylic acid having an inherent viscosity of 0.3 dl/g or more by dehydrating polycondensation of lactic acid containing hydroxycarboxylic acid in an organic solvent in the presence or absence of a catalyst, comprising using a hydroxycarboxylic acid raw material which comprises one or more impurities selected from the group consisting of methanol, ethanol, acetic acid, pyruvic acid, fumaric acid, methyl lactate, ethyl lactate and butyl lactate in a total amount of 0.3% by mole or less for the amount of said hydroxycarboxylic acid raw material.Type: GrantFiled: June 7, 1995Date of Patent: April 30, 1996Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Masahiro Ohta, Shoji Obuchi, Yasunori Yoshida
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Patent number: 5504133Abstract: A composition for forming transparent conductive films comprises a tin-containing indium oxide (ITO) powder dispersed in a binder solution. The binder solution comprises a mixed organic solvent consisting of at least one polar solvent and at least one non-polar solvent, in which a polymer having a weight-average molecular weight of from 8,000 to 150,000 is dissolved. The polymer contains (a) an acidic functional group in such a proportion that the polymer has an acid number of from 0.5 to 15 mg-KOH/g, or (b) a polyalkylene glycol chain in a proportion of from 0.5% to 40% by weight, or both of (a) and (b) in the molecule. Alternatively, the binder solution comprises an actinic radiation-curable binder, which comprises an acrylate or methacrylate compound containing an acid phosphate group in the molecule. The composition can form, by coating, a transparent conductive film having improved electrical and optical properties.Type: GrantFiled: October 4, 1994Date of Patent: April 2, 1996Assignees: Mitsubishi Materials Corporation, Dai Nippon Toryo Co., Ltd.Inventors: Masato Murouchi, Toshiharu Hayashi, Akira Nishihara, Masaoki Ishihara
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Patent number: 5470910Abstract: Composite materials that contain nanoscaled particles are produced in thata) a compound, which is soluble in the solvent and belongs to a metal of the groups 6 to 15 of the periodic system or lanthanides,is reacted in an organic solvent withb) a precipitating reagent in order to form antimonides, arsenides, chalcogenides, halogenides or phosphides of the metal of the metal compound (a) in the present ofc) a bifunctional compound, which exhibits at least one electron pair-donor group and at least one group, which can be converted through polymerization or polycondensation into an organic or inorganic network;the resulting stabilized sol of nanoscaled particles is mixed withd) a compound, which can be polymerized or cured thermally or photochemically into a polymer, ande) a polymerization initiator;a hydrolysis and polycondensation of the optionally present groups that can be converted into an inorganic network is conducted; and the material is cured thermally of photochemically.Type: GrantFiled: June 28, 1994Date of Patent: November 28, 1995Assignee: Institut Fuer Neue Materialien Gemeinnuetzige GmbHInventors: Lubomir Spanhel, Ertugrul Arpac, Rudiger Nab, Helmut Schmidt
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Patent number: 5444143Abstract: A preparation process of polyhydroxycarboxylic acid having an inherent viscosity of 0.3 dl/g or more by dehydrating polycondensation of lactic acid containing hydroxycarboxylic acid in an organic solvent in the presence or absence of a catalyst, comprising using a hydroxycarboxylic acid raw material which comprises one or more impurities selected from the group consisting of methanol, ethanol, acetic acid, pyruvic acid, fumaric acid, methyl lactate, ethyl lactate and butyl lactate in a total amount of 0.3% by mole or less for the amount of said hydroxycarboxylic acid raw material.Type: GrantFiled: December 21, 1993Date of Patent: August 22, 1995Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Masahiro Ohta, Shoji Obuchi, Yasunori Yoshida
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Patent number: 5436313Abstract: An improved process for making polyetheresters is disclosed. A polyether is reacted with an anhydride in the presence of a strong protic acid or a metal salt of a strong protic acid in an amount effective to promote insertion of the anhydride into carbon-oxygen bonds of the polyether to produce the polyetherester. Polyetheresters made by the process of the invention are useful in a wide variety of applications, particularly in the polyurethane and unsaturated polyester industries.Type: GrantFiled: March 30, 1994Date of Patent: July 25, 1995Assignee: ARCO Chemical Technology, L.P.Inventors: Jeffrey A. Klang, Lau S. Yang
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Patent number: 5436314Abstract: A process for making polyetheresters is disclosed. A polyether is reacted with a carboxylic acid in the presence of a strong protic acid or a metal salt of a strong protic acid to promote insertion of the carboxylic acid into polyether carbon-oxygen bonds to produce a polyetherester. The polyetheresters are useful for various applications in the polyurethane and unsaturated polyester industries.Type: GrantFiled: April 18, 1994Date of Patent: July 25, 1995Assignee: ARCO Chemical Technology, L.P.Inventors: Lau S. Yang, Jeffrey A. Klang
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Patent number: 5389719Abstract: Cyclic tin catalysts are employed for the preparation of branched polyesters from macrocyclic polyester oligomers.Type: GrantFiled: June 20, 1994Date of Patent: February 14, 1995Assignee: General Electric CompanyInventors: Tohru Takekoshi, Eric J. Pearce
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Patent number: 5387666Abstract: Cyclic tin catalysts are employed for the preparation of branched polyesters from macrocyclic polyester oligomers. They are less susceptible than previously known catalysts to the presence of acidic impurities in the oligomer compositions.Type: GrantFiled: June 20, 1994Date of Patent: February 7, 1995Assignee: General Electric CompanyInventors: Tohru Takekoshi, Eric J. Pearce
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Patent number: 5374707Abstract: New compounds including bis-.beta.-hydroxy ethyl bibenzoate containing less than 2.5%, and preferably less than 1%, diethylene glycol and a process for the production of the bis-.beta.-hydroxy ethyl bibenzoate by the condensation of 4,4'-biphenyl dicarboxylic acid and ethylene glycol at low temperature and pressure in the presence of a catalyst are disclosed. Use of the compounds to produce polyesters is also disclosed.Type: GrantFiled: February 18, 1993Date of Patent: December 20, 1994Assignee: Monsanto CompanyInventors: Jawed Asrar, David J. Weinkauff, A. Hameed Bhombal
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Patent number: 5367019Abstract: A coating composition capable of forming a transparent coating having a high refractive index, excellent dyeing properties and scratch resistance on a transparent solid material, the coating composition comprising:(A) 100 parts by weight of an epoxy group-containing silicon compound or a partial hydrolysis product thereof,(B) 0 to 100 parts by weight of an organosilicon compound or a partial hydrolysis product thereof,(C) a metal oxide sol containing 0 to 130 parts by weight of at least one metal oxide selected from the group consisting of antimony oxide, tin oxide and titanium oxide,(D) 0.25 to 30 parts by weight of a polybasic carboxylic acid or an acid anhydride thereof, or a bisphenol compound, and(E) 0.01 to 30 parts by weight of a curing catalyst, ora molded article formed by coating a transparent solid material with the above coating composition as a coating layer-forming component.Type: GrantFiled: February 1, 1994Date of Patent: November 22, 1994Assignee: Nippon Arc Co., Ltd.Inventor: Fujio Sawaragi
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Patent number: 5367001Abstract: A impression composition comprising:(A) a polyether polymer having at least two alkenyl groups in its molecule,(B) a polyorganohydrogensiloxane having at least three silicon-bonded hydrogen atoms in its molecule,(C) a platinum catalyst,(D) an inorganic filler, and(E) an antioxidant.This composition of has hydrophilic nature and a small cure shrinkage; hence it enables precise impression in a wet environment like in a mouth.Type: GrantFiled: April 9, 1993Date of Patent: November 22, 1994Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kunio Itoh, Yoshio Inoue, Hironao Fujiki, Masachika Yoshino
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Patent number: 5360858Abstract: To a silicone rubber adhesive composition comprising (A) a diorganopolysiloxane containing at least two alkenyl groups in a molecule, (B) a diorganohydrogenpolysiloxane having at least two hydrogen atoms directly attached to silicon atoms in a molecule and a viscosity of about 5 to about 5,000 cs at 25.degree.C., (C) an adhesion modifier compound containing in its molecule a group represented by (RO).sub.3 Si-- or H(RO).sub.2 Si-- wherein R is selected from the group consisting of methyl, ethyl, trifluoroethyl, hexafluoropropyl, and methoxyethyl groups, and (D) a platinum catalyst is added (E) an organic tin compound. The combined use of components (C) and (E) provides he synergistic effect that the resulting adhesive composition can firmly adhere to even polycarbonate and polyphenylene sulfide resins which are known as difficultly bondable resins.Type: GrantFiled: November 29, 1993Date of Patent: November 1, 1994Assignees: Shin-Etsu Chemical Co., Ltd., Shin-Etsu Technical Services, Inc.Inventors: Hironao Fujiki, Kaoru Michimata, Atsushi Yaginuma, Nobuyuki Hasebe, Clara Y. Kim
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Patent number: 5314947Abstract: A coating composition capable of forming a transparent coating having a high refractive index, excellent dyeing properties and scratch resistance on a transparent solid material, the coating composition comprising:(A) 100 parts by weight of an epoxy group-containing silicon compound or a partial hydrolysis product thereof,(B) 0 to 100 parts by weight of an organosilicon compound or a partial hydrolysis product thereof,(C) a metal oxide sol containing 0 to 130 parts by weight of at least one metal oxide selected from the group consisting of antimony oxide, tin oxide and titanium oxide,(D) 0.25 to 30 parts by weight of a polybasic carboxylic acid or an acid anhydride thereof, or a bisphenol compound, and(E) 0.01 to 30 parts by weight of a curing catalyst, or,a molded article formed by coating a transparent solid material with the above coating composition as a coating layer-forming component.Type: GrantFiled: September 2, 1992Date of Patent: May 24, 1994Assignee: Nipon Arc Co., Ltd.Inventor: Fujio Sawaragi
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Patent number: 5308880Abstract: An active hydrogen-containing B-side composition for reaction with a polyisocyanate-containing A-side composition to make a polyurethane, polyurethaneurea and/or polyurea elastomer by reaction injection molding, which B-side composition comprises an acidic mold release composition, diethyltoluenediamine chain extender and, as a catalyst, a diorganotin dicarboxylate in which the carboxylate contains at least one alpha halogen atom.Type: GrantFiled: May 20, 1993Date of Patent: May 3, 1994Assignee: Air Products and Chemicals, Inc.Inventors: John E. Dewhurst, James D. Nichols, Ann C. L. Savoca
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Patent number: 5019640Abstract: A process for producing PET based polyester polymers from a lower dialkyl ester of a dicarboxylic acid and a glycol selected from the class of ethylene glycol, diethylene glycol, polyethylene glycol, blends of ethylene glycol and propane and/or butane diol, or mixtures of two or more of these, using the novel catalyst system and a small amount of dicarboxylic acid is described. The novel catalyst composition includes from about 10 ppm to about 150 ppm manganese; from about 50 ppm to about 250 ppm lithium; preferably from about 10 ppm to about 40 ppm cobalt; and from about 200 ppm to about 400 ppm antimony, all amounts being based upon the expected yield of the polyester based polymer.Type: GrantFiled: January 8, 1990Date of Patent: May 28, 1991Assignee: Hoechst Celanese CorporationInventors: Monika Engel-Badar, Bobby N. Furr
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Patent number: 5011647Abstract: Active hydrogen-containing compositions having internal mold release components are used in a process in preparing molded polymeric products. In the process, the active hydrogen-containing composition contains (a) a primary or secondary amine, (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.Type: GrantFiled: June 21, 1989Date of Patent: April 30, 1991Assignee: The Dow Chemical CompanyInventors: Louis W. Meyer, Robert Carswell, J. Alan Vanderhider
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Patent number: 5008033Abstract: Active hydrogen-containing compositions having internal mold release components for use in preparing molded polymeric products are disclosed which contain (a) a primary or secondary amine, (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.Type: GrantFiled: June 12, 1989Date of Patent: April 16, 1991Assignee: The Dow Chemical CompanyInventors: Louis W. Meyer, J. Alan Vanderhider, Robert Carswell
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Patent number: 4970288Abstract: Non-toxic organotin catalysts containing at least one direct oxygen-to-tin bond and one direct carbon-to-tin bond are provided for use as esterification catalysts in the production of non-toxic polyester and polyester-containing compositions. Articles made from such polyester and polyester-containing compositions are suitable for use in regulated food, beverage, pharmaceutical, and medical-device applications.Type: GrantFiled: September 22, 1989Date of Patent: November 13, 1990Assignee: Atochem North America, Inc.Inventors: William A. Larkin, Emily C. Bossert, Edmund M. Gibbons
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Patent number: 4954562Abstract: Improved water-absorbing, crosslinked acrylate resins are prepared by aqueous polymerization of (A) acrylic acid neutralized 70 to 100 mole percent for example with ammonia and/or caustic alkali and/or an amine; with (B) acrylamide in a mole ratio of 70 to 100 mole percent (A) to 30:0 mole percent (B); (C) styrene, in an amount of 0% to 25% based on the weight of acrylic acid or acrylate; and (D) a water miscible or a water soluble polyvinyl monomer in the presence of (E) a metal oxide, such as titanium dioxide, in an amount of 0.001% to 5% based on the total weight of (A), (B), (C), (D) and (E), such that the amount of (D) is 0.001 to 0.6 weight percent based on the total weight of (A), (B), (C), (D) and (E). In addition, surface treating the water-absorbing crosslinked acrylate resins with a polyquaternary amine substantially further increases both the rate of water absorption and the quantity of water absorbed and retained by the metal oxide-containing resin.Type: GrantFiled: January 30, 1989Date of Patent: September 4, 1990Assignee: American Colloid CompanyInventor: Mark Anderson
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Patent number: 4876019Abstract: Internal mold release compositions for use in preparing molded polymeric products are disclosed which contain (a) a primary or secondary amine (b) a carboxylic acid or amido carboxylic acid salt of a group II metal or of aluminum, lithium, copper, iron, cobalt or nickel, and optionally (c) a carboxylic acid or amido carboxylic acid.Type: GrantFiled: January 12, 1984Date of Patent: October 24, 1989Assignee: The Dow Chemical CompanyInventors: Louis W. Meyer, James A. Vanderhider, Robert Carswell
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Patent number: 4871790Abstract: A polymeric composition of matter comprises a polymer having dispersed therein at least one of colloidal metal and metal oxide particles in the submicrometer size range, said composition being aqueous-free and free of aliphatic hydrocarbon polymers and their halogenated derivatives. Methods for preparing the dispersions of the invention are also disclosed.Type: GrantFiled: November 25, 1987Date of Patent: October 3, 1989Assignee: Minnesota Mining and Manufacturing CompanyInventors: William M. Lamanna, Fred B. McCormick, Robin E. Wright
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Patent number: 4818808Abstract: A process for producing a linear polyester comprising a main structural unit of an aromatic dicarboxylic acid ester of an alkylene glycol, particularly, comprising a polyethylene terephthalate or polytetramethylene terephthalate unit, is provided. In the process of the invention, the polycondensation reaction is conducted in the presence of a niobic acid catalyst that is obtained by heat-treating a hydrated niobium compound at the temperature range between 80.degree. C. and 400.degree. C. The process of the invention is also effecitvely applied to the manufacture of an elastomeric polyester comprising a polyalkylene terephthalate as a hard segment and a polyalkylene glycol as a soft segment.Type: GrantFiled: March 24, 1988Date of Patent: April 4, 1989Assignees: Kanebo, Ltd., Research Association for Synthetic Fiber TechnologyInventors: Toshihiro Kushimoto, Yoshimichi Ozawa, Nobuo Izawa
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Patent number: 4678819Abstract: A composition for artificial marble which comprises a polymer composition in which an inorganic substance and an organic polymer are firmly bound in one body and a vinyl compound, said polymer composition being obtained by polymerizing a polymerizable vinyl monomer, in the presence of at least one monomer selected from the group consisting of carboxylic acid monomer, sulfonic acid monomer, and sulfonate monomer, in an aqueous polymerization system containing an inorganic substance dispersed therein; and a processs for producing artificial marble from said composition by cast polymerization with the addition of a polymerization initiator.Type: GrantFiled: August 20, 1985Date of Patent: July 7, 1987Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Isao Sasaki, Nobuhiro Mukai
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Patent number: 4574097Abstract: A thixotropic gel composition comprising an .alpha.-cyanoacrylate monomer, stabilizer, plasticizer and free radical scavenger is improved with the addition of fibers, spheres or mixtures of the same of certain materials which are insoluble in and inert to the .alpha.-cyanoacrylate monomer. The fibers or spheres composed of such materials as polyolefins, polyesters or polyamides enhance the physical and chemical characteristics of the thixotropic gel.Type: GrantFiled: August 10, 1984Date of Patent: March 4, 1986Assignee: Isopedix CorporationInventor: Travis W. Honeycutt
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Patent number: 4546145Abstract: A polymer composition wherein an inorganic substance and an organic polymer are firmly consolidated, which is characterized by being produced by polymerizing a vinyl monomer susceptible to radical polymerization in a polymerization system containing a dispersed inorganic substance in the presence of at least one monomer selected from sulfonic acid monomers, sulfonate monomers, or carboxylic acid monomers represented by the general formula [I] ##STR1## wherein R.sub.1 is a hydrogen atom, alkyl group having 1 to 20 carbon atoms, phenyl group, derivative of phenyl group, or halogen atom, X is CONH, ##STR2## COO(CH.sub.2).sub.m or (CH.sub.2).sub.n (wherein R.sub.2 and R.sub.3 are each a hydrogen atom or alkyl group having 1 to 15 carbon atoms, R.sub.4 is an alkylene group having 1 to 15 carbon atoms, m is an integer of 1 to 20, and n is an integer of 0 to 20), and Y is a hydrogen atom, ammonium radical, or an alkali metal atom, or by the general formula [II] ##STR3## wherein R.sub.Type: GrantFiled: August 14, 1984Date of Patent: October 8, 1985Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kazuo Kishida, Isao Sasaki, Nobuhiro Mukai
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Patent number: 4518738Abstract: This invention relates to a powder for use in dry sensitization for electroless plating, the powder comprising a plastics base material which is a mixture of hydrophobic and hydrophilic plastics materials to which has been added sensitizing particles.Type: GrantFiled: June 4, 1982Date of Patent: May 21, 1985Assignee: NESELCOInventors: Gunnar Sorensen, Leo Svendsen
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Patent number: 4455404Abstract: Rigid, non-elastomeric, non-cellular, amorphous metal reinforced urethane compositions and methods for preparing them; said composition characterized by high flexural strength and prepared by impregnating an amorphous metal reinforced material with a polyether-urethane prepared by admixing a blend of polyethers having an average functionality of from 4.0 to about 7.5 and an average hydroxyl number of from 300 to about 600, with an organic polyisocyanate and curing said impregnated amorphous metal reinforced material.Type: GrantFiled: May 16, 1983Date of Patent: June 19, 1984Assignee: Allied CorporationInventor: Edward R. Degginger
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Patent number: 4443565Abstract: A thermoplastic resin composition comprises 100 parts by weight of metal foil fragments, from 1 to 10 parts by weight of a first polymer covering the surfaces of the metal foil fragments and obtained by polymerizing at least one of monomers selected from the group consisting of acrylic acid, methacrylic acid, an alkylacrylate, an aminoalkylacrylate, an alkylmethacrylate and an aminoalkylmethacrylate in the presence of the metal foil fragments, and from 5 to 33 parts by weight of a second polymer obtained by polymerizing a mixture of an aromatic vinyl monomer and a monomer copolymerizable with the atomatic vinyl monomer. Also disclosed is a process for preparing the thermoplastic resin composition containing metal foil fragments.Type: GrantFiled: February 1, 1983Date of Patent: April 17, 1984Assignee: Mitsubishi Monsanto Chemical CompanyInventors: Kanji Kasahara, Akira Sakamoto
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Patent number: 4435540Abstract: A polymer composition wherein an inorganic substance and an organic polymer are firmly consolidated, which is characterized by being produced by polymerizing a vinyl monomer susceptible to radical polymerization in a polymerization system containing a dispersed inorganic substance in the presence of at least one monomer selected from sulfonic acid monomers, sulfonate monomers, or carboxylic acid monomers represented by the general formula [I] ##STR1## wherein R.sub.1 is a hydrogen atom, alkyl group having 1 to 20 carbon atoms, phenyl group, derivative of phenyl group, or halogen atom, X is CONH, ##STR2## COO(CH.sub.2).sub.m or (CH.sub.2).sub.n (wherein R.sub.2 and R.sub.3 are each a hydrogen atom or alkyl group having 1 to 15 carbon atoms, R.sub.4 is an alkylene group having 1 to 15 carbon atoms, m is an integer of 1 to 20, and n is an integer of 0 to 20), and Y is a hydrogen atom, ammonium radical, or an alkali metal atom, or by the general formula [II] ##STR3## wherein R.sub.Type: GrantFiled: December 31, 1981Date of Patent: March 6, 1984Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kazuo Kishida, Isao Sasaki, Nobuhiro Mukai
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Patent number: 4400305Abstract: An adsorbent, which has been prepared by mixing (a) one part by weight of (i) at least one member selected from the group consisting of hydrated ferrites of titanium, zirconium and tin or (ii) a mixture of the said hydrated ferrites(s) and at least one member selected from the group consisting of hydrated oxides of titanium, zirconium, tin and iron with (b) about 1/10 to 3 parts by weight of a thermosetting resin showing resistance to acids and alkalis such as an unsaturated polyester or polyurethane resin, followed by curing.The adsorbent can be used to adsorb a great variety of anions and cations and especially as an adsorbent for phosphate ions.The adsorbent shows excellent resistance to acids and alkalis, and can be subjected to repeated desorption and regeneration procedures without causing any deterioration of its adsorptive capacity, thus permitting its repeated usage over a long period of time.The adsorbent can be magnetically separated, and facilitates solid-liquid separation.Type: GrantFiled: February 20, 1981Date of Patent: August 23, 1983Assignee: Takeda Chemical Industries, Ltd.Inventors: Tatsuro Takeuchi, Sokukawa Masaki, Kimoto Ryuzo
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Patent number: 4362626Abstract: An adsorbent, which is prepared by subjecting to curing a mixture consisting of (a) one part by weight of at least one member selected from the group consisting of titanium oxide hydrate, zirconium oxide hydrate and tin oxide hydrate and of (b) about 1/10 to 3 parts by weight of an epoxy, unsaturated polyester or polyurethane resin.The adsorbent can be used as an adsorbent for a great variety of anions and cations and especially as the adsorbent for phosphate ion.The adsorbent displays also improved chemical resistance, resistant to acids and alkalis, and can be subjected to repeated desorption and regeneration procedures without causing any deterioration of its adsorptive capacity, thus permitting the repeated usage over a long period of time.Type: GrantFiled: August 12, 1980Date of Patent: December 7, 1982Assignee: Takeda Chemical Industries, Ltd.Inventors: Tatsuro Takeuchi, Masaki Sokukawa, Ryuzo Kimoto