Patents Examined by Ralph Dean, Jr.
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Patent number: 5098959Abstract: Novel methacrylate ester block polymers comprising both a hydrolyzable and a non-hydrolyzable ester functionality are capable of being partially hydrolyzed and neutralized to yield the corresponding methacrylic acid and methacrylic acid salt (ionomer) derivatives. The compositions are usefully employed in the preparation of thermoplastic elastomers, adhesives and laminating films.Type: GrantFiled: July 30, 1990Date of Patent: March 24, 1992Assignee: The Dow Chemical CompanyInventors: James E. McGrath, Craig D. DePorter, Timothy E. Long
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Patent number: 5045599Abstract: This provides an anti-icing coating composition comprising as vehicle components:(a) a copolymer having hydroxyl, or hydroxyl and a reactive group other than hydroxyl and comprising as essential monomer components a fluoroolefin and a vinyl monomer having hydroxyl and copolymerizable with the fluoroolefin,(b) a silicone compound represented by the formula ##STR1## wherein n is an integer of 6 to 300, k is an integer of 0 to 6, h is 0 or 1, m is an integer of 0 to 6, j is 1 or 2, and Y is a) hydroxyl, or b) a group reactive with the hydroxyl or the reactive group in the copolymer (a) and selected from among (i) carboxyl, (ii) epoxy and (iii) a monovalent or bivalent group containing one or two free isocyanate groups, and(c) a polyisocyanate compound.Type: GrantFiled: April 18, 1989Date of Patent: September 3, 1991Assignee: Kansai Paint Company LimitedInventor: Heihachi Murase
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Patent number: 5045595Abstract: A multi-stage polyorganosiloxane/polyvinyl-based graft polymer is provided by the co-homopolymerization of a silicone polymer and a polyvinyl polymer (e.g. polystyrene) and the subsequent graft polymerization of one or more stages of additional vinyl-type polymers. When the isolated multi-stage graft polymers are combined with thermoplastic resins and are molded, impact strength, weld line strength and thermal stability are markedly improved with no tendency to delaminate.Type: GrantFiled: November 14, 1988Date of Patent: September 3, 1991Assignee: General Electric CompanyInventor: I-Chung W. Wang
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Patent number: 5025066Abstract: Polycarbonate and polyester blends are prepared with a combination of modifiers comprising a multi-stage polyorganosiloxane-based graft polymer composition and a diene rubber-based graft polymer composition imparting a wide range of excellent physical properties on the PC and PE blends.Type: GrantFiled: November 14, 1988Date of Patent: June 18, 1991Assignee: General Electric CompanyInventors: James L. DeRudder, I-Chung W. Wang
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Patent number: 5006600Abstract: Propylene/ethylene polymers are prepared by a process in which, in each case in the presence of hydrogen and by means of gas phase polymerization, first (A), in a first polymerization zone, propylene is homopolymerized, and the resulting propylene homopolymer is introduced into (B) a second polymerization zone, where a mixture of propylene and ethylene is then polymerized with the reaction product obtained in (A). In this process, ethylene is homopolymerized in a further polymerization zone (C), likewise by gas phase polymerization, with certain provisos, and the resulting reaction product is likewise fed to the second polymerization zone (B).Type: GrantFiled: April 12, 1989Date of Patent: April 9, 1991Assignee: BASF AktiengesellschaftInventors: Oskar Buechner, Wolfgang Gruber
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Patent number: 4994523Abstract: An impact-resistant resin composition having excellent impact resistance, weather resistance, surface appearance and wear characteristics is disclosed.The resin composition comprises:(A) a compound rubber type graft copolymer wherein at least one vinyl monomers is graft-polymerized onto a compound rubber that has an average particle diameter of 0.08 to 0.6 .mu.m and possesses such a structure that 10 to 90 wt. % of a polyorganosiloxane rubber component and 10 to 90 wt. % of a polyalkyl (meth)acrylate rubber component are entangled in an inseparable fashion, and the total amount of the polyorganosiloxane rubber component and the polyalkyl (meth)arcylate rubber component is 100 wt. %; and(B) a vinyl polymer obtained by polymerizing 70 to 100 wt. % of at least one vinyl monomer selected from the group consisting of aromatic alkenyl compounds, vinyl cyanide compounds, and alkyl (meth)acrylates with 0 to 30 wt. % of other vinyl monomer copolymerizable with them.Type: GrantFiled: January 23, 1989Date of Patent: February 19, 1991Assignee: Mitsubishi Rayon Company LimitedInventors: Isao Sasaki, Naoki Yamamoto, Akira Yanagase
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Patent number: 4988788Abstract: The room temperature-curable coating composition comprises, as the resinous vehicle thereof, a copolymer prepared by the radical copolymerization of a ternary monomeric mixture composed of (A) 20-80% by weight of an alkyl (meth)acrylate, e.g., methyl methacrylate, (B) 10-78% by weight of an oligomeric organopolysiloxyanylalkyl (meth)acrylate, e.g., 1,1,1,3,5,5,5-heptamethyl-3-(3-methacryloxypropyl) trisiloxane, and (C) 2-30% by weight of an organosilane compound having at least one hydroxyzable group and a radical-polymerizable unsaturated group, e.g., 3-methacryloxypropyl trimethoxy silane. The coating composition gives a cured coating film having outstandingly high weatherability and resistance against ultraviolet light, water and chemicals in comparison with conventional room temperature-curable acrylic resin-based coating compositions.Type: GrantFiled: July 8, 1988Date of Patent: January 29, 1991Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Mitsuhiro Takarada
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Patent number: 4980427Abstract: Toughened heat-curable bismaleimide resin systems which contain alkenylphenoxy-terminated polysiloxane modifiers and compatibilizing agents. Cured resin systems exhibit increased toughness without a concomitant decrease in thermal stability at elevated temperatures.Type: GrantFiled: February 9, 1989Date of Patent: December 25, 1990Assignee: BASF AktiengesellschaftInventor: Hong-Son Ryang
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Patent number: 4978705Abstract: Silicone rubber compositions prepared from polydiorganosiloxane and small amounts of alkali metal hydrogen phosphates or alkali metal hydrogen phosphites improve the properties of the silicone rubber, such as compression set and flame retardancy.Type: GrantFiled: September 29, 1988Date of Patent: December 18, 1990Assignee: Dow Corning CorporationInventor: Peter Lamont
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Patent number: 4963310Abstract: A process for the production of polyester polyurethane elastomeric fibers having improved humid aging resistance which comprises the steps of reacting a polyester diol with an excess molar amount of an organic diisocyanate to prepare a urethane prepolymer having terminal isocyanate group at both ends thereof; extending the chain of the prepolymer with a bifunctional active hydrogen compound and 0.5 to 10.0 mole % of a diaminosilyl compound based on the total amount of the bifunctional active hydrogen compound during or after preparation of the prepolymer to obtain a polyurethane; spinning the polyurethane into fiber; and crosslinking the polyurethane during or after spinning.Type: GrantFiled: November 4, 1988Date of Patent: October 16, 1990Assignee: Toyo Boseki Kabushiki KaishaInventors: Hideyuki Mitamura, Yoshikazu Arimatsu, Katsuya Tani, Kenichi Katsuo
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Patent number: 4962177Abstract: A fluorescent "film prepared by reacting a polyfunctional acrylate with a fluorescent" compound formed by reacting at least one aminofunctional organosilicon compound with at lesat one optical brightener having the formula ##STR1## and wherein R denotes anilino, sulfanilic acid, metanilic acid, or anilin-2,5-disulfonic acid, and R' is methoxy, methylamino, N-methyl-N-hydroxyethylamino, bis(hydroxyethyl)amino, morpholino, anilino, or diethylamino.Type: GrantFiled: May 5, 1989Date of Patent: October 9, 1990Assignee: Dow Corning CorporationInventor: Peter Y. K Lo
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Patent number: 4960635Abstract: The film consists of one or more Langmuir-Blodgett layers, the layer containing an organic polymer having long-chain fluoroalkyl side groups or consisting of this compound. The film is distinguished by a multilayer structure having few defects and is, for example, suitable for optical purposes and for surface treatment. The order of the molecules in the multilayer can be improved by annealing and by heating the film through the phase transition and cooling again.Type: GrantFiled: September 15, 1988Date of Patent: October 2, 1990Assignee: Hoechst AktiengesellschaftInventors: Christian Erdelen, Helmut Ringsdorf, Werner Prass, Ude Scheunemann
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Patent number: 4960850Abstract: Polydiorganosiloxanes having silanol end groups, well suited for the production of vulcanizable silicone compositions, are conveniently prepared by bulk polycondensing a polydiorganosiloxane oligomer having silanol end groups in a closed reaction zone in the presence of a catalytically effective amount of trifluoromethylsulfonic acid, at a temperature of from 20.degree. to 160.degree. C., while continuously removing water of polycondensation, and terminating the polycondensation reaction by adding a catalyst neutralizing amount of a cyclopolydiorganosilazane or a polydiorganosilazane having diorganoaminosilyl end groups to the medium of reaction.Type: GrantFiled: April 18, 1988Date of Patent: October 2, 1990Assignee: Rhone-Poulenc ChimieInventors: Lucien Billet, Jean-Jacques Lebrun
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Patent number: 4954580Abstract: Epoxysiloxanes having, per molecule, at least two groupings of the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another are C.sub.1 -C.sub.10 alkyl, C.sub.1 -C.sub.10 alkyoxy, C.sub.3 -C.sub.8 cycloalkyl, C.sub.6 -C.sub.10 aryl, benzyl or a halogen atom and in which each grouping of the formula I in each case is attached directly to a silicon atom of the siloxane radical, are suitable for use as epoxy resins. They can be used together with customary epoxy resin curing agents, for example, for the production of adhesives, sealing materials, lacquers or encapsulating resins, and afford products having excellent properties. The epoxysiloxanes according to the invention are also valuable reactive thinners and flexibilizers for curable epoxy resin mixtures.Type: GrantFiled: November 21, 1988Date of Patent: September 4, 1990Assignee: Ciba-Geigy CorporationInventor: Sheik A. Zahir
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Patent number: 4948858Abstract: The alpha, omega-bis (aminophenoxyalkyl)diorganopolysiloxanes having the following general formula (I): ##STR1## are improvedly prepared, with essentially 100% selectivity, by direct hydrosilylation, in bulk, between an alkyloxyaniline and an alpha, omega-bis(hydrogeno) diorganopolysiloxane.Type: GrantFiled: February 24, 1988Date of Patent: August 14, 1990Assignee: Rhone-Poulenc ChimieInventor: Pascal Barthelemy
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Patent number: 4824903Abstract: A heat-resistant silicone rubber is obtained from a composition of a vinyl-containing polyorganosiloxane, a hydrogenpolyorganosiloxane, a platinum-containing catalyst, carbon black, and an acetylacetone salt of a metal wherein the metal can be copper, zinc, aluminum, iron, cerium, zirconium, or titanium. The silicone rubber can maintain its rubber properties at temperatures of 350.degree. C. for prolonged periods of time.Type: GrantFiled: December 2, 1986Date of Patent: April 25, 1989Assignee: Dow Corning Kabushiki KaishaInventors: Koichi Aizawa, Shingo Sewa, Kiyoshi Mizushima, Minoru Emoto
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Patent number: 4822716Abstract: The polysilanes and polysiloxanes of the present invention are polymers that contain silicon in the principal chain, and contain in the side chains alkaline soluble groups such as phenol-based hydroxy group and carboxyl group.One silicone resist material of the present invention comprises the polysilane or the polysiloxane in the above.Another silicone resist material of the present invention contains the above polysilane or polysiloxane, and an appropriate photosensitive agent.Still another silicone resist material of the present invention does not contain the above photosensitive agent, and in its stead, it contains a group that possesses photosensitive to ultraviolet rays or the like, via a siloxane bonding in the principal chain. As a substance with such photosensitivity, one may mention, for example, o-nitrobenzylsilyl groups that presents alkaline solubility when it is irradiated by ultraviolet rays.Type: GrantFiled: December 8, 1986Date of Patent: April 18, 1989Assignee: Kabushiki Kaisha ToshibaInventors: Yasunobu Onishi, Shuji Hayase, Rumiko Horiguchi, Akiko Hirao
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Patent number: 4812518Abstract: Lacquers and molding compositions containing an anti-adhesive character producing and lubricity increasing amount of a polyester-containing polysiloxane corresponding to the formula ##STR1## wherein A, B and D each represent --CH.sub.3 or --Z--R--Q; Z represents an alkylene group with 1 to 11 carbon atoms, --(CH.sub.2).sub.2 SCH.sub.2 --or --(CH.sub.2).sub.3 NHCO--; R represents an aliphatic, cycloaliphatic or aromatic group containing at least 3 carboxylate ester groups and having an average molecular weight Mn of 300 to 3,000; Q represents a reactive group capable of chemically reacting with a resin component of the lacquer or molding composition; x represents a number from 4 to 150; y represents a number from 1 to 6, in which an average molecule contains at least one group --Z--R--Q and the ratio of the number of --Z--R--Q groups to the number x is from 1:3 to 1:30.Type: GrantFiled: September 30, 1986Date of Patent: March 14, 1989Assignee: BYK-Chemie GmbHInventors: Karlheinz Haubennestel, Alfred Bubat
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Patent number: 4808663Abstract: Disclosed is an ungelled acrylic resin composition containing an acrylic polymer having in a molecule thereof at least one group containing a silicon atom selected from: ##STR1## each R independently is selected from the group of moieties consisting of Y, hydrogen, a C.sub.1 -C.sub.10 group joined to Si through an Si-C linkage, and OR.sup.7 in which R.sup.7 represents alkykl having at least 4 carbon atoms, aryl, alkylaryl, arylalkyl, aryloxyalkyl, or alkyloxyalkyl, wherein Y represents an easily hydrolyzable group.The acrylic resin composition, contains an amount of easily hydrolyzable Y moieties such that the ratio of the number of grams of the ungelled acrylic resin composition to equivalent of easily hydrolyzable Y moieties in the ungelled acrylic resin composition is in the range of from 40 to 667. Preferred acrylic resin compositions of the invention can be cured in the presence of atmospheric moisture and a suitable catalyst at a temperature of less than or equal to 121 degrees Celsius within 3 hours.Type: GrantFiled: August 24, 1987Date of Patent: February 28, 1989Assignee: PPG Industries, Inc.Inventors: Wen H. Chang, Paul J. Prucnal, John R. Peffer, Edward L. Dufford, Ronald R. Ambrose
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Patent number: 4808685Abstract: A process for preparing polysilanes of the general formula (RSi).sub.n wherein each R denotes independently an alkyl, aryl, alkaryl or aralkyl group having from 1 to 18 carbon atoms and n is at least 8, comprises reacting at least one silane of the general formula RSiX.sub.3 wherein R is as defined above and X denotes a halogen atom with an alkali metal in an organic liquid medium in which the silane is soluble, preferably tetrahydrofuran.Type: GrantFiled: December 3, 1987Date of Patent: February 28, 1989Assignee: Dow Corning, Ltd.Inventor: Roberto Bortolin