Tin Atom Patents (Class 524/178)
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Patent number: 6225387Abstract: An organohalide-flame retardant polymer containing as a stabilizer blend: a) an acid scavenger, for example a hydrotalcite or an amorphous basic aluminum magnesium carbonate; b) a heat stabilizer comprising an organotin compound; and c) a polyhydroxyaliphatic costabilizer.Type: GrantFiled: February 17, 2000Date of Patent: May 1, 2001Assignee: Great Lakes Chemical CorporationInventors: Donald Robert Hallenbeck, Cindy Nancy Doumen, Anne-Marie Prins
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Patent number: 6225382Abstract: A fluorine-containing resin composition comprising at least one fluorine-containing polycyclic compound (A) selected from the group consisting of the following compounds (A1), (A2) and (A3), and a polymer (B) having a fluorine-containing alicyclic structure: (A1) a fluorine-containing non-condensed polycyclic compound having at least two fluorine-containing rings bonded by a bond containing at least one member selected from the group consisting of a triazine ring, an oxygen atom, a sulfur atom, a phosphorus atom and a metal atom, each of said fluorine-containing rings being a carbon ring or a heterocyclic ring, (A2) a fluorine-containing non-condensed polycyclic compound having at least three fluorine-containing rings bonded directly or by a bond containing a carbon atom, each of said fluorine-containing rings being a carbon ring or a heterocyclic ring, (A3) a fluorine-containing condensed polycyclic compound which is a condensed polycyclic compound composed of at least three carbon rings or heterocyclic rType: GrantFiled: September 23, 1998Date of Patent: May 1, 2001Assignee: Asahi Glass Company Ltd.Inventors: Ikuo Matsukura, Shunsuke Yokotsuka, Katsumi Suzuki
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Patent number: 6211269Abstract: Glass-fiber-reinforced ABS molding compounds containing up to 5% by weight of a tin-containing organic compound corresponding to formula (I) and/or (II) in which R1 and R2=C1-12 alkyl, R3, R4=C1-18 alkyl, R5=—(CH2)—n, —CH═CH—, —CH═CR1—, X=H, 1 equivalent of an alkali metal, preferably Na or K, ½ equivalent of an alkaline earth metal, preferably Mg or Ca, n=2-8.Type: GrantFiled: October 23, 1998Date of Patent: April 3, 2001Assignee: Bayer AGInventors: Alfred Pischtschan, Herbert Eichenauer, Horst Peters
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Patent number: 6174960Abstract: A non-aqueous—organic-solvent-free coating composition having increased block resistance comprising an acrylic modified ethylene-vinyl acetate (EVA) polymer blend, wherein the acrylic polymer is prepared by emulsion polymerizing at least one ethylenically unsaturated non-carboxy functional monomer, from 0.01 to 2 pphm of a sterically hindered alkoxylated silane monomer, and at least one anionic surfactant, and the ethylene-vinyl acetate polymer is prepared by emulsion polymerizing ethylene and vinyl acetate.Type: GrantFiled: January 8, 1999Date of Patent: January 16, 2001Assignee: National Starch and Chemical Investmnent Holding CorporationInventors: Lien Phan, Rajeev Farwaha
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Patent number: 6159614Abstract: A polypropylene resin composition is herein disclosed which is obtainable by blending (A) 100 parts by weight of a polypropylene resin comprising (a) 100 to 20% by weight of a homopolymer of propylene and/or a propylene copolymer containing 4% by weight or less of another olefin unit in which in a pentad fraction by .sup.13 C-NMR, [rrrr/(1-mmmm)].times.100 is in the range of 20 to 60%, a Tm measured by a DSC is 150.degree. C. or more, and a melt enthalpy is 100 J/g or less, and (b) 0 to 80% by weight of a propylene copolymer containing 10 to 80% by weight of an olefin unit other than propylene, with (B.) 0.01 to 5 parts by weight of an octyltin salt of a fatty acid, an alkylenebisfatty acid amide, a fatty acid ester of a polyvalent alcohol, or a metal salt of an aliphatic monocarboxylic acid.Type: GrantFiled: June 1, 1999Date of Patent: December 12, 2000Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Yutaka Azuma, Satoshi Tamura, Tsunenosuke Hiramatsu, Keigo Umemoto, Toshio Kano, Masamichi Kondo
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Patent number: 6156832Abstract: The invention relates to a composition containing organotin maleates such as is obtained by reacting a mixture of a low molecular weight alcohol or epoxyalkane and of a high molecular weight alcohol or epoxyalkane with maleic anhydride and by then bringing the mixture thus obtained into contact with a dialkyltin oxide. The invention also relates to poly(vinyl chloride) (PVC) composition stabilized and lubricated using the said composition based on organotin maleates and also to the extruded rigid objects formed from the said PVC compositions.Type: GrantFiled: January 9, 1998Date of Patent: December 5, 2000Assignees: Elf Atochem North American, Inc., Elf Atochem S.A.Inventors: Chris Bertelo, Muriel Cuilleret, Stephane Girois, Patrick Morel
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Patent number: 6127467Abstract: Novel corrosion inhibiting compositions and methods for applying these compositions to metal surfaces so as to inhibit rusting and formation of blisters wherein the compositions comprise at least one aminocarboxylate salt, a pigment, a binder and a solvent.Type: GrantFiled: March 24, 1993Date of Patent: October 3, 2000Assignee: Cosan Chemical CorporationInventor: Kamlesh D. Gaglani
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Patent number: 6001908Abstract: The invention relates to a organo-tin-containing complex stabilizer for synthetic resin compositions of the formula I:M.sup.2+.sub.1-a-b(2+x) Al.sup.3+.sub.a [Sn(R).sub.(2-x) ].sub.b.sup.(2+x)+ (OH).sup.-.sub.2-b(2+x) A.sup.n-.sub.a/n *mH.sub.2 O (I)wherein M.sup.2+ stands for at least one divalent metal cation, R stands for a C.sub.1-12 linear or branched alkyl group, A.sup.n- stands for an n-valent anion or mixtures of anions, and the following conditions apply:0<a<0.5; 0<b<0.1; 0.ltoreq.x.ltoreq.1; 0<a+b(2+x)<0.5; 0.ltoreq.m.ltoreq.2.The invention also relates to a method for the preparation of these stabilizers and their use in synthetic resin compositions, preferably halogen-containing synthetic resin compositions, or (co)polymers obtained by Ziegler Natta polymerization processes.Type: GrantFiled: June 18, 1998Date of Patent: December 14, 1999Assignee: Akcros ChemicalsInventors: Peter Henne, Volker Horn, Peter Klass, Gerard Hubert Frans Schmetz, Jack James Angus Orchison, Malcolm Thomas John Mellor
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Patent number: 5985967Abstract: The invention relates to a composition containing high molecular weight organotin maleates as obtained by reacting a high molecular alcohol or epoxyalkane with maleic anhydride and by then bringing the mixture thus obtained into contact with a dialkyltin oxide.The invention also relates to the poly(vinyl chloride) (PVC) compositions stabilized using the said composition based on high molecular weight organotin maleates and also to the extruded rigid items formed from the said PVC compositions.Type: GrantFiled: January 9, 1998Date of Patent: November 16, 1999Assignees: Elf Atochem North America Inc., Elf Atochem S.A.Inventors: Muriel Cuilleret, Patrick Morel, James L. Reilly, Peggy S. Schipper
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Patent number: 5962122Abstract: Polymeric compositions having a high dielectric constant are made from a thermotropic liquid crystalline and a ceramic having a dielectric constant which is greater than about 50 at a frequency of 1.0 GHz. The compositions have a dielectric constant of at least about 4, and preferably at least about 6. Preferred compositions also have a low loss tangent.Type: GrantFiled: November 28, 1995Date of Patent: October 5, 1999Assignee: Hoechst Celanese CorporationInventors: Lak M. Walpita, William M. Pleban, Helmut Eckhardt
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Patent number: 5955524Abstract: A polypropylene resin composition is herein disclosed which is obtainable by blending (A) 100 parts by weight of a polypropylene resin comprising (a) 100 to 20% by weight of a homopolymer of propylene and/or a propylene copolymer containing 4% by weight or less of another olefin unit in which in a pentad fraction by .sup.13 C-NMR, ?rrrr/(1-mmmm)!.times.100 is in the range of 20 to 60%, a Tm measured by a DSC is 150.degree. C. or more, and a melt enthalpy is 100 J/g or less, and (b) 0 to 80% by weight of a propylene copolymer containing 10 to 80% by weight of an olefin unit other than propylene, with (B) 0.01 to 5 parts by weight of an octyltin salt of a fatty acid, an alkylenebisfatty acid amide, a fatty acid ester of a polyvalent alcohol, or a metal salt of an aliphatic monocarboxylic acid.Type: GrantFiled: May 22, 1996Date of Patent: September 21, 1999Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Yutaka Azuma, Satoshi Tamura, Tsunenosuke Hiramatsu, Keigo Umemoto, Toshio Kano, Masamichi Kondo
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Patent number: 5948881Abstract: Curative compositions of amine terminated polyamide resins blended with a deaminated bis-(p-aminocyclohexyl)methane composition (DeAms) are useful for curing adhesive epoxy resin compositions. The polyamides comprise combinations of fatty mono-acids, dimer acids, polyethyleneamines, and piperazine ring containing polyamines which are piperazine or N-aminoalkylpiperazine, where the alkyl chain is a C2 to C6 alkyl chain, wherein the ratio of equivalents of fatty mono-acid to dimer acid can range from about 0.001:1 to about 1:1, the ratio of moles of piperazine ring containing polyamine to polyethylene amine can range from about 0.1:1 to about 1:1, and the ratio of moles of polyamine to equivalents of acid can range from about 0.6:1 to about 1.2:1. DeAms is blended at 2 to 40 wt % based on polyamide. Adhesive compositions comprising these curatives are also disclosed.Type: GrantFiled: December 4, 1997Date of Patent: September 7, 1999Assignee: Air Products and Chemicals, Inc.Inventors: Dilipkumar Nandlal Shah, William Edward Starner
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Patent number: 5905121Abstract: An active ester compound having an alkoxy group is provided having the structure: wherein:R.sup.1 is derived from a polyisocyanate R.sup.1 (NCO).sub.m reacted with an active hydrogen-containing material to form the urethane group in the compound;m is an integer of at least 2; andR.sup.2 and R.sup.3 are independently alkyl groups having from 1 to 4 carbon atoms.The compound is useful as a crosslinking agent when combined with active hydrogen-containing resinous binders in curable film-forming compositions.Type: GrantFiled: December 19, 1997Date of Patent: May 18, 1999Assignee: PPG Industries, Inc.Inventor: Padmanabhan Sundararaman
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Patent number: 5889081Abstract: This invention provides: (1) a hinder composition for friction materials, characterized in that it comprises a thermosetting resin and a specific organic silicon compound having phenyl groups, and (2) a friction material having as a binder composition shown in the above item (1). When used for manufacturing friction materials in the brakes and clutches for various kinds of vehicles such as automobiles, it can remarkably improve the facing and abrasion resistances of the friction material.Type: GrantFiled: January 17, 1996Date of Patent: March 30, 1999Assignee: Osaka Gas Company LimitedInventors: Hiroya Kakegawa, Tokugen Yasuda, Xiangsheng Wang
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Patent number: 5852086Abstract: An antigel agent composed of four types of antioxidants that allows polyamides to be blended with acrylonitrile/butadiene polymers with minimum generation of gels and yields a blend which can be extruded or sheeted to give a uniformed shaped product, for example, sheets and molded articles and is essentially free of plugging the screens of extruder used to extrude hose tube or sheet.Type: GrantFiled: September 30, 1996Date of Patent: December 22, 1998Assignee: The Goodyear Tire & Rubber CompanyInventors: James Walter Horvath, Faith Michelle Howard
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Patent number: 5852088Abstract: The present invention provides for amorphous, nanoporous, catalytic metal-containing ceramic material having a surface area in excess of 70 m.sup.2 /gm and characterized by a high content of open microporous cell structure wherein the micropores have a mean width of less than 20 Angstroms and wherein said microporous structure comprises a volume of greater than about 0.03 cm.sup.3 /gm of the ceramic. The invention also provides for a preceramic composite intermediate composition comprising a mixture of a ceramic precursor and from about 0.5 up to about 65 wt % of an organometallic compound containing a metal of Group IB, II, III, IV, IV, V, VIB, VIIA or VIII of the Periodic Table, including rare earth metals, whose pyrolysis product in ammonia or an inert atmosphere at temperatures of up to less than about 1100.degree. C. gives rise to the nanoporous catalytic ceramics of the invention.Type: GrantFiled: December 27, 1995Date of Patent: December 22, 1998Assignee: Exxon Research and Engineering CompanyInventors: John P. Dismukes, Jack Wayne Johnson, John Stewart Bradley
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Patent number: 5844019Abstract: A tooth-surface treatment agent for use with dental glass ionomer cement comprises (a) a polymer of an .alpha.-.beta. unsaturated carboxylic acid having a specific molecular weight, (b) a compound containing one or more of the elements selected from the group of aluminum, iron, tin, and calcium, and (c) water. This agent ensures the dissolution and removal of the smear layer, and improves and stabilizes the bonding strength of the glass ionomer cement to tooth structure. Also, the agent has a milder effect than the effects had by phosphoric acid, and has an action on reducing irritation to the dental pulp and is harmless thereto because it enables the smear plugs to remain in dentinal tubules.Type: GrantFiled: October 10, 1997Date of Patent: December 1, 1998Assignee: GC CorporationInventor: Shinichi Kato
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Patent number: 5811505Abstract: An energy-polymerizable composition derived from ingredients comprising: a cyanate ester monomer or oligomer comprising an organic radical bonded through aromatic carbon atoms to at least two --OCN groups; a low molecular weight polyalkylene glycol; and an organometallic compound in which at least one carbon atom of an organic group is bonded to a metal atom. The composition can be cured by at least one of thermal energy, radiation, and accelerated particles, to produce a cured, homogeneous composition.Type: GrantFiled: December 17, 1997Date of Patent: September 22, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventor: Fred B. McCormick
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Patent number: 5648417Abstract: A color coating composition having excellent appearance, acid resistance and mar resistance is provided. Such excellent properties are achieved by the combination of an aminoplast-curing coating system with a curable coating system comprising a particular half esterified acid anhydrides, hydroxyl groups and epoxy groups.Type: GrantFiled: July 29, 1995Date of Patent: July 15, 1997Assignee: Nippon Paint Co., Ltd.Inventors: Akira Fushimi, Seigo Miyazoe, Atsushi Yamada, Yoshitaka Okude
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Patent number: 5643501Abstract: An additive system for a polyvinyl chloride formulation for improved processability while maintaining thermal stability of the formulation, and having a low-water-blush haze and low extractability in an aqueous media, the additive system including a primary stabilizer which is a Lewis acid metal compound selected from the group consisting of organo-tin compounds and organo-zinc compounds, a secondary stabilizer selected from the group consisting of epoxide compounds having less than approximately 5.2 oxirane groups per molecule; and, an external lubricant for lubrication of the PVC formulation, wherein a critical ratio of the primary stabilizer to the secondary stabilizer maximizes thermolytic color stability while limiting generation of excessive build-up, plate-out, dark particles during the processing of the polyvinyl chloride formulation.Type: GrantFiled: February 9, 1994Date of Patent: July 1, 1997Assignee: Baxter International Inc.Inventors: Angeles Lillian Buan, Dean Laurin
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Patent number: 5626958Abstract: The invention relates to a coating composition for PVC sections, based on a polymeric vehicle, a crosslinking agent, and a thermoplastic resin powder. The coating composition is particularly useful for coating PVC sections for windows, shutters, and doors. PVC joinery coated with the composition of the invention has exceptional impact strength and resistance to abrasion, friction, and inclement weather.Type: GrantFiled: February 1, 1994Date of Patent: May 6, 1997Assignee: Elf Atochem S.A.Inventors: Bruno D'Herbecourt, Thierry Moulin
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Patent number: 5621051Abstract: A process for preparation of a polyurethane-polycarbodiimide foam which comprises reacting a polyol component containing a benzylic ether type phenol resin having hydroxymethyl groups with an organic polyisocyanate component in the presence of an organotin catalyst for urethane formation and a carbodiimidating catalyt. According to this process, it is unnecessary to use fluorine-containing halogenated hydrocarbons as a blowing agent, and blowing on the spot is possible using a spray blowing machine or the like.Type: GrantFiled: March 18, 1996Date of Patent: April 15, 1997Assignee: Nisshinbo Industries, Inc.Inventors: Tatsuya Okutani, Yasuo Imashiro, Eiji Sasaki, Shiro Nagahata, Kiyotake Morimoto
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Patent number: 5616638Abstract: Flexible composites, such as those useful as light pipes, may be effectively cured by reactions upon copolymerized alkoxysilane functionality. Improvements in the optical properties of the uncured and cured systems are found when the alkoxysilane monomer is stabilized during preparation, storage, and copolymerization with low levels of non-aromatic stable free radicals or stable free-radical precursors, such as nitroxides.Type: GrantFiled: March 20, 1995Date of Patent: April 1, 1997Assignee: Rohm and Haas CompanyInventors: Michael Hallden-Abberton, Donald McLeod, Jr., James S. Ritscher, Scot M. Turner
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Patent number: 5539055Abstract: An antistatic nonflammable resin composition comprising: (A) 30 to about 80 weight percent a styrene resin; (B) 70 to about 20 weight percent of a vinyl chloride resin; (C) 0.5 to about 5 weight parts based on (A)+(B) of at least one antistatic agent selected from the group consisting of alkyl sulfonates and alkyl benzene sulfonates; and (D) 0.1 to about 5 weight parts based on (A)+(B) of at least one organic tin stabilizer containing sulfur. Molded articles from said composition possess a good appearance, excellent antistatic property and dust-repellency on the surface thereof.Type: GrantFiled: February 15, 1995Date of Patent: July 23, 1996Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Kenji Nishimoto, Yoshihiko Hashimoto
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Patent number: 5516827Abstract: Compositions comprising a chlorine-containing polymer and a stabilizer mixture comprising:a) at least one tin alcoholate or tin carboxylate of the formula[(R.sub.2).sub.2 Sn(OR')].sub.2 O (Ia);[(R.sub.2)Sn(OR').sub.2 ].sub.2 O (Ib);(R.sub.2)Sn(OR')O (Ic);[-(R.sub.2)Sn(OR')O--].sub.m (Id);[-(R.sub.1 CO.sub.2 Sn(R.sub.2).sub.2 ].sub.2 O (IIa);or[-(R.sub.2).sub.2 Sn--O.sub.2 C--R.sub.3 --CO.sub.2 --{(R.sub.2).sub.2 SnO{(R.sub.2).sub.2 SnO}.sub.i -].sub.n (IIb);b) at least one organic zinc carboxylate, zinc phenoxide or a tin chloride of the formula[(R.sub.1 CO.sub.2).sub.x (R.sub.2).sub.y CL.sub.z Sn].sub.n O.sub.n-1 (III)andc) at least one thiophosphate or thiophosphite of the formula(R.sub.6 S).sub.3 P.dbd.X.sub.b (IV)where the individual radicals are as defined in claim 1.Type: GrantFiled: January 24, 1995Date of Patent: May 14, 1996Assignee: Ciba-Geigy CorporationInventors: Johannes Kaufhold, Horst Zinke
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Patent number: 5514731Abstract: This invention discloses an antifouling paint which can retain antifouling properties over a long period of time comprising:(A) 100 parts by weight of a film forming resin, and(B) 1-50 parts by weight of a chain organopolysiloxane containing oxyalkylene groups and having an HLB of 3-12.Type: GrantFiled: December 14, 1990Date of Patent: May 7, 1996Assignee: Hayashikane Paint Co., Ltd.Inventor: Yoshito Nakai
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Patent number: 5498649Abstract: Thermoplastic elastomeric ablative insulation having low density are disclosed. The ablative insulation is based upon a thermoplastic elastomeric polymer resin containing a polyamide polymer and a maleic anhydride modified EPDM polymer. The ratio of polyamide polymer to maleic anhydride modified EPDM is in the range from about 20:80 to about 40:60. Carefully selected fillers provide suitable charring and ablative insulation performance without unduly increasing the insulation density. Typical fillers include an phosphorus containing compound, such as ammonium polyphosphate, a polyhydric alcohol present, such as pentaerythritol, silicone resin, chopped fibers, an antioxidant, a butadiene polymer, and a peroxide.Type: GrantFiled: May 18, 1993Date of Patent: March 12, 1996Assignee: Thiokol CorporationInventor: David G. Guillot
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Patent number: 5498651Abstract: A method for polymerizing macrocyclic polyester oligomers comprising the step of contacting macrocyclic polyester oligomers and polymerization catalysts in the presence of epoxides and/or thioepoxides.Type: GrantFiled: June 19, 1995Date of Patent: March 12, 1996Assignee: General Electric CompanyInventor: Daniel J. Brunelle
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Patent number: 5434204Abstract: A colored styrenic resin composition comprises 100 parts by weight of a styrenic resin, 0.1 to 5 parts by weight of titanium oxide and 0.05 to 2.5 parts by weight of an organo-tin compound and in which the amount of the organo-tin compound is not less than 10% by weight on the basis of the amount of the titanium oxide. The resin composition ensures the production of injection-molded articles free of black streaks and, therefore, the articles formed from the resin composition of the invention have high commercial value. The colored styrenic resin composition is useful as a material for the production of housings of, for example, a variety of electric appliances and office machinery and equipment as well as miscellaneous goods.Type: GrantFiled: October 14, 1992Date of Patent: July 18, 1995Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Masato Takaku, Mune Iwamoto, Masaru Honma, Atsushi Hashimoto
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Patent number: 5416135Abstract: Halogen-containing synthetic resins can be stabilized with calcium and zinc soaps of which the effectiveness is enhanced by co-stabilizers.The invention relates to special cationic layered hydrotalcite compounds having a specific BET surface of at least 50 m.sup.2 /g which are modified with at least one polymeric additive, to processes for the production of these cationic layer compounds and to their use as co-stabilizers for halogen-containing synthetic resins stabilized with calcium and/or zinc salts.Type: GrantFiled: January 24, 1994Date of Patent: May 16, 1995Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Helmut Endres, Herbert Fischer, Frido Loeffelholz, Peter Wedl, Kurt Worschech, Angela Hansen, Guenther Geismar
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Patent number: 5407984Abstract: A process for producing macrocyclic polyester oligomers from polyester linears is described and the process comprises the steps of combining polyester linears and organic solvents having tin catalysts present therein.Type: GrantFiled: August 31, 1994Date of Patent: April 18, 1995Assignee: General Electric CompanyInventors: Daniel J. Brunelle, Tohru Takekoshi
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Patent number: 5378413Abstract: A process for conveniently producing microcapsules containing a gelatin wall crosslinked with quinone and a core of an active compound such as a fouling reducing agent, particularly a tributyl tin chloride, involves use of a simple or complex coacervation technique. The quinone crosslinking provides microcapsules of excellent strength, storage stability, and resistance to aqueous exposure, such that the rate of release of the fouling reducing agent can be controlled with precision.Type: GrantFiled: January 21, 1993Date of Patent: January 3, 1995Assignee: The United States of America as represented by the Secretary of the NavyInventors: James W. Mihm, George I. Loeb, Elizabeth G. Haslbeck
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Patent number: 5374673Abstract: A flame retardant composition which includes (A) 100 parts by weight of a flame retardant resin mixture of from 30 to 80 weight percent of a styrene series (A1) wherein the reduced viscosity of a methyl ethyl ketone-soluble component is from 0.2 to 0.55 dl/g in an N,N-dimethylformamide solution at 30.degree. C. and a concentration of 0.3 g/dl, and from about 70 to about 20 weight percent of a vinyl chloride resin (A2) having an average polymerization degree of from 400 to 800, (B) from about 0.5 to about 6 parts by weight of a heat stabilizer, the volatile loss of which after the heating to 240.degree. C. for one hour in air is not more than 50% by weight, and (C) from about 0.1 to about 5 parts by weight of a lubricant, the volatile loss of which after heating to 240.degree. C. for one hour in air is not more than 50% by weight.Type: GrantFiled: April 15, 1993Date of Patent: December 20, 1994Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Kenji Nishimoto, Yoshihiko Hashimoto
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Patent number: 5374664Abstract: Novel dental polymeric compositions useful as an adhesive dental restoration material are described. The compositions are based on a polymer obtained by the reaction of methacryloxyethyl trimellitic acid anhydride and methyl methacrylate monomer, in the presence of a free radical catalyst, being characterized by the fact that they contain at least one compound selected from the group consisting of silver, nickel, tin, silicium, copper and titanium or their oxides. The preferred amount of these compounds is in the range of between 2% and 20% by volume of the polymer. The compounds should be finely ground, possessing a particle size in the range of between 5 to 50 microns. Optionally, the compositions will contain a material capable to release anions, most preferred being fluoride-based material, in an amount of between 1% to 10% by weight of the composition. The compositions were found to impart bonding to fresh or old amalgam, as well as to dentin, enamel, porcelain and various alloys.Type: GrantFiled: May 21, 1993Date of Patent: December 20, 1994Assignee: B.J.M. Laboratories Ltd.Inventors: Baruch Zalsman, Hanna Dodiuk, Irena Eppelbaum, Alexander Valdman
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Patent number: 5340862Abstract: Improved stabilizer compositions are provided which impart significant long-term stabilization to halogen containing polymers such as polyvinyl chloride. The improved stabilizer compositions incorporate an alkali-metal hydrogen phosphate compound, such as anhydrous disodium hydrogen phosphate, of a predetermined surface area. The novel inorganic phosphate enables a reduction in the amount of organmetallic stabilizer, if desired, while still yielding long-term stability in the resultant polymer, or the ability to raise process temperature and reduce cycle times of molding operations.Type: GrantFiled: February 10, 1993Date of Patent: August 23, 1994Assignee: Elf Atochem North America, Inc.Inventors: Joseph Silbermann, William L. Smith
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Patent number: 5326804Abstract: The present invention provides for an organopolysiloxane rubber composition for coating high voltage electrical insulators comprising the product which is obtained by mixing 30 to 50 weight percent of a mixture of 40 to 44 weight percent of a polydimethyl siloxane fluid having a viscosity from 10 to 15 Pa.S at 25.degree. C; 2.0 to 3.0 weight percent of a SiO.sub.2 reinforcing filler with a specific gravity of 2.2 and a range of particle size of 0.5 to 10 microns; 1.0 to 3.0 weight percent of an organosilicone cross-linking agent; 0.5 to 2.0 weight percent of an adhesion promotoer; 0.1 to 0.2 weight percent of a dibutyltindilaurate condensation catalyst and 36 to 48 weight percent of alumina trihydrate, the alumina trihydrate having a median particle size of 13.mu.m, containing 65.1 percent Al.sub.2 O.sub.3, 34.5 percent combined H.sub.2 O, 0.3 percent Ha.sub.2 O, 0.02 percent CaO, 0.01 percent SiO.sub.2 and having a specific gravity of 2.Type: GrantFiled: November 19, 1992Date of Patent: July 5, 1994Inventors: Balwantrai Mistry, Edward A. Cherney, Seraj ul Huda
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Patent number: 5321080Abstract: A resin composition comprising an olefin resin (A), a copolymer of olefin with non-conjugated diene (B) and at least one polymer (C) selected from the group consisting of the following polymers;C1: diene polymer containing a hydroxyl group or the hydrogenation product thereof,C2: polymer containing a hydroxyl group,C3: polymer containing a carboxyl group (including an acid anhydride group),C4: polymer containing an amino group and/or imino group, andC5: polymer containing an epoxy group; and optionally an elastomer (D), filler (E) and at least one compound (F) selected from the group consisting of the following compounds;F1: organotin compound,F2: tertiary amine compound, andF3: phosphorus oxy compound.The moldings prepared from this resin composition have remarkable adhesive properties for paints, adhesives and printing inks. Thus, paints, etc. may be applied directly to the moldings, without surface treatment or washing thereof.Type: GrantFiled: July 29, 1992Date of Patent: June 14, 1994Assignee: Mitsubishi Petrochemical Company, Ltd.Inventors: Yuta Kumano, Sadao Kitagawa, Mitsushige Baba, Shiroh Gotoh
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Patent number: 5304589Abstract: Oxidatively stabilized polyolefin polymers containing an antioxidant are made more resistant to loss of antioxidant by converting at least some of the antioxidant comprising a polymer of dicyclopentadiene and a phenolic compound into a form non extractable with cyclohexane. The conversion is preferably by reaction in the melt phase in the presence of a radical initiator. Addition of organotin esters, sulphides, oxides or thioethers reduces the color.Type: GrantFiled: January 18, 1991Date of Patent: April 19, 1994Assignee: BP Chemicals LimitedInventors: Neil S. Davidson, Hilda A. Leiper, Colette A. A. Di Murro, Kenneth Wilkinson
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Patent number: 5300590Abstract: The crystallinity of polyesters prepared from macrocyclic poly(1,4-butylene terephthalate) oligomers is reduced and cracking of molded parts suppressed by the incorporation therein of at least one other linear or macrocyclic poly(alkylene dicarboxylate) oligomer, such as poly(ethylene terephthalate) or poly(1,4-butylene isophthalate). It is preferably employed in macrocyclic form. The resulting compositions can be combined with inert fillers and polymerized.Type: GrantFiled: November 30, 1992Date of Patent: April 5, 1994Assignee: General Electric CompanyInventors: Todd D. Cook, Thomas L. Evans, Kevin P. McAlea, Eric J. Pearce
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Patent number: 5272194Abstract: A strengthened polyimide film is described, which has improved adhesion when bonded to a metal foil through a heat-resistant adhesive, containing from 0.02 to 1% by weight, based on the weight of the film, of an organo-metallic compound wherein the metal is tin, bismuth or antimony. A process for preparing a strengthened polyimide film is also described wherein an organometallic compound is introduced into a film-forming polyamic acid polymer prior to the casting step.Type: GrantFiled: January 17, 1992Date of Patent: December 21, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: Anthony J. Arduengo, III, Yia C. Ray
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Patent number: 5248762Abstract: Cyclic polyoxymethylene having a number-average molecular weight of 500 to 5,000 is obtained by solid state cyclization reaction of an alkalidegradative linear oxymethylene homopolymer in the presence of a medium containing a cationic catalyst.The cyclization is effected at 10.degree. to 150.degree. C. for 1 to 500 minutes in an organic liquid medium.The reaction mixture obtained by the cyclization is treated with an alkaline medium to hydrolyze and remove away unreacted linear polyoxymethylene homopolymer, and isolate the cyclic polyoxymethylene.The product has a sharp molecular weight distribution and is useful as a resin improver.Type: GrantFiled: March 30, 1992Date of Patent: September 28, 1993Assignee: Polyplastics Co., Ltd.Inventors: Kaoru Yamamoto, Toshio Shiwaku
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Patent number: 5238605Abstract: There is disclosed a process for the preparation of a powdered stabilizer mixture comprising tin stabilizers and adsorbents, which process comprises mixing and heating at least one carboxylic acid or a carboxylic anhydride, at least one organotin oxide and at least one, preferably mineral, adsorbent.Type: GrantFiled: February 21, 1992Date of Patent: August 24, 1993Assignee: Ciba-Geigy CorporationInventors: Gerd Abeler, Reiner Fuchs, Kornelia Malzacher
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Patent number: 5236981Abstract: The present invention relates to new stabilized compositions based on halogenated polymer and more specifically on chlorinated polymer. It relates more particularly to stabilized compositions based on chlorinated polymer, which are characterized in that they contain:a) an effective quantity of at least one lead compound or of at least one organostannic compound, andb) an effective quantity of at least one essentially amorphous basic aluminum magnesium carbonate denoted by the formula (I):(MgO).sub.y.Al.sub.2 O.sub.3.(CO.sub.2).sub.x.(H.sub.2 O).sub.z (I).Type: GrantFiled: April 9, 1992Date of Patent: August 17, 1993Assignee: Rhone-Poulenc ChimieInventors: Mireille Arfiche, Louis Carette, Pierre Pena Porta, Francois Pouenat
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Patent number: 5194470Abstract: Novel compositions for stabilizing chlorinated polymers, copolymers and homopolymers comprising dawsonite, an organotin .beta.-diketonate, an organic zinc compound, and an organic calcium, magnesium, barium or lanthanide compound are disclosed. The compositions of the present invention enable the content of epoxidized oils to be decreased in chlorinated polymers while preserving thermal stability.Type: GrantFiled: April 19, 1991Date of Patent: March 16, 1993Assignee: Rhone-Poulenc ChimieInventors: Louis Carette, Michel Gay, Gerard Velleret
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Patent number: 5190580Abstract: A synergistic composition of biocides for the preparation of anti-fouling paint preferably containing at least one of the group of 3-iodo-2-propynyl-butyl carbamate, 3-iodo-2-propynyl-cyclohexyl carbamate, 3-iodo-2-propynyl phenyl carbamate, 3-iodo-2-propynylbenzyl carbamate, 3-iodo-2-propynyl propyl carbamate and 4-iodo-3-butynyl propyl carbamate and at least one of the group of tributyltin compounds consisting of bis(tributyltin) oxide, tributyltin fluoride, tributyltin methacrylate, tributyltin phosphate and tributyltin naphthenate. Said composition is more effective in protecting ship bottoms or underwater constructions than each component itself.Type: GrantFiled: October 25, 1991Date of Patent: March 2, 1993Assignee: Troy Chemical CorporationInventor: Rainer Gruening
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Patent number: 5186880Abstract: The invention is a process for making a cyanate ester resin cured product by (1) adding organic metal compound (a) and triethanol amine(b) to a cyanate resin composition which is flowable at a temperature of not more than 50.degree. C. comprising as its main component polyfunctional cyanate ester compound having at least two cyanate groups, thereby forming a cyanate resin composition having 0.1-5% by weight of (a) and 0.1-5% by weight of (b), which is flowable at a temperature of not more than 50.degree. C.; (2) molding the composition at a temperature of not more than 50.degree. C. (3) primary curing at a temperature of not more than 50.degree. C.; and (4) post-curing at a temperature of not less than 170.degree. C.Type: GrantFiled: July 3, 1990Date of Patent: February 16, 1993Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Morio Gaku, Mitsuru Nozaki
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Patent number: 5166241Abstract: Thiol compounds are combined with an organometallic halide or metallic halide to provide thermal stability to vinyl halide polymers.Type: GrantFiled: November 22, 1989Date of Patent: November 24, 1992Inventor: Simon Kornbaum
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Patent number: 5145896Abstract: A method of reducing the color of a hot melt adhesive formulation comprising a polymer of a conjugated diene which comprises adding to the formulation an amount of an alkyltin compound selected from the group consisting of mercaptides, mercaptocarboxylates, and carboxylates sufficient to reduce color formation.Type: GrantFiled: September 9, 1991Date of Patent: September 8, 1992Assignee: Shell Oil CompanyInventor: Jeffrey G. Southwick
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Patent number: 5143574Abstract: An improved shelf life composition useful as adhesives and, especially, pressure sensitive adhesives is made by mixing an acrylic composition with a catalyst of the tin type and a non-reactive silicone composition essentially free of hydroxyl and hydrogens on the silicon atoms and of the formula shown hereinafter.Type: GrantFiled: February 27, 1991Date of Patent: September 1, 1992Assignee: Morgan Adhesives Co.Inventors: Gerald H. Knittel, Stanley D. Smith, Richard C. Spector, Jack M. McClintock
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Patent number: 5118741Abstract: Such food packing materials as heat shrinkable films or such formed containers for food as bottles are manufatured by forming resin compositions of the following compostions: (a) 100 weight parts of vinyl chloride based resin obtained by adding 0.005 to 0.5 weight parts of partially saponified polyvinyl alcohol, degree of saponification 20-55 mol %, means degree of polymerization 150-600, to 100 weight parts of loaded vinyl chloride monomer or a mixture of vinyl based monomer with vinyl chloride as main, during suspension-polymerizing in an aqueous medium under the existence of 0.03-0.08 weight parts of partially saponified polyvinyl alcohol, degree of saponification 65-80 mol %, means degree of polymerization 600-1000, or else in slurry after completion of the suspension-polymerizing: (b) 0.3 to 5 weight parts of non-toxic stabilizer for food which is a liquid composite stabilizer; and (c) 4 to 15 weigth parts of butadiene-styrene based copolymer resin.Type: GrantFiled: September 5, 1991Date of Patent: June 2, 1992Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tadashi Amano, Shigehiro Hoshida