Patents Examined by Melvyn I. Marquis
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Patent number: 6020389Abstract: The present invention pertains to a process for foaming mixtures of bifunctionally-ending di-organopolysiloxanes and acyloxsilane cross-linking agents, involving the addition to the mixture of sufficient quantities of an ammonium, amino, sodium or potassiumn hydrocarbonate.Type: GrantFiled: April 10, 1998Date of Patent: February 1, 2000Assignee: Heidelberger Bauchemie GmbHInventor: Rudolf Hoheneder
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Patent number: 6017974Abstract: An activation energy beam curable coating composition containing (A) a polymer having an organopolysiloxane unit and a quaternary ammonium salt unit and (B) a polyfunctional acrylate having 3 or more acryloyl groups in the molecule is disclosed. A film excellent in abrasion resistance, antistatic properties and transparency can be formed by applying the activation energy beam curable coating composition of the present invention to the surface of a material, and irradiating the coated surface with an activation energy beam.Type: GrantFiled: April 2, 1998Date of Patent: January 25, 2000Assignee: Mitsubishi Chemical CorporationInventors: Noritaka Hosokawa, Kazuhide Hayama
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Patent number: 6017587Abstract: The present invention relates to electrically conductive silicone compositions comprising an organopolysiloxane containing at least two alkenyl groups per molecule, an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms per molecule, a platinum group metal containing catalyst, a conductive metal particulate, a precrosslinked elastomeric silicone particle, and a non-reactive volatile diluent. The electrically conductive silicone compositions of this invention are useful as electrically conductive adhesives and coatings for electrical and electronic devices. The cured electrically conductive silicone compositions of this invention have high electroconductivity and rubbery elasticity.Type: GrantFiled: July 9, 1998Date of Patent: January 25, 2000Assignees: Dow Corning Corporation, Dow Corning Toray Silicone Co., Ltd.Inventors: Don Lee Kleyer, Michael Andrew Lutz, Katsutoshi Mine, Osamu Mitani, Kazumi Nakayoshi, Bernard Vanwert
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Patent number: 6017995Abstract: A suspension for the solvent-free production of silicone resin-bonded papers based on sheet silicates, which consists of:(a) 100 parts by weight of a sheet silicate,(b) 100 to 10,000 parts by weight of water,(c) 0.1 to 5 parts by weight of at least one silane of formula (I):(R'O).sub.a SiR.sub.4-a (I)in which R denotes substituted or unsubstituted hydrocarbon radicals having 1 to 20 carbon atoms and R' denotes C.sub.1-10 -alkyl, aryl, alkylaryl or hydrogen and a assumes a value from 1 to 3, and/or the partial hydrolysis product thereof,(d) 1 to 50 parts by weight of a pulverulent silicone resin of formula (II):(R'O).sub.b SiR.sub.C O.sub.(4-b-c)/2 (II)in which R and R.sup.1 have the abovementioned meaning and b assumes a value from 0 to 0.5 and c a value from 0.7 to 1.3, with the proviso that at least 5 parts by weight of the silicone resin of formula (II) are used per part by weight of the compound of formula (I),(e) 0.Type: GrantFiled: May 7, 1998Date of Patent: January 25, 2000Assignee: Wacker-Chemie GmbHInventors: Guenter Beuschel, Holger Rautschek
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Patent number: 6015457Abstract: Processes for producing poly (hydrido siloxane) copolymers and processes for producing solutions of such copolymers for coating semiconductor substrates are provided. The copolymers have the general formula: (HSiO.sub.1.5).sub.a (HSiO(OR)).sub.b (SiO.sub.2).sub.c, wherein R is a mixture of H and an alkyl group having between 1 and 4 carbon atoms; a+b+c=1; 0.5<a<0.99; 0.01<b<0.5; and 0<c<0.5. Processes for producing the copolymers use alkoxysilanes as starting materials. Processes for producing coating solutions include removal of water and alcohol. Films of such coating solutions are useful as planarizing dielectric layers.Type: GrantFiled: March 12, 1998Date of Patent: January 18, 2000Assignee: AlliedSignal Inc.Inventors: Roger Y. Leung, Tadashi Nakano
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Patent number: 6015869Abstract: The present invention is a sorbent polymer with the (AB)n sequence where the fluorinated interactive A segment is fluoroalkyl-substituted bisphenol and the oligosiloxane B segment is an oligodimethylsiloxane. More specifically, the fluoroalkyl-substituted bisphenol contains two allyl groups and the oligodimethylsiloxane has terminal Si--H groups. The sorbent polymer may be used as thin films on a variety of chemical sensors, or as a component of a thin film on a chemical sensor. Crosslinked sorbent polymers are processable into stable thin films on sensor devices. Sorbent polymers are also useful in sensor arrays, in surface acoustic wave sensors, and in cladding of optical fibers. Sensor arrays provide better selectivity than single sensors and permit identification and quantification of more than one species in a mixture. The sorbent polymer is synthesized by hydrosilylation polymerization which is achieved by catalyzed heating.Type: GrantFiled: March 17, 1998Date of Patent: January 18, 2000Assignee: Battelle Memorial InstituteInventors: Jay W. Grate, Steven N. Kaganove
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Patent number: 6015850Abstract: Disclosed herein are a rubber composition comprising a diene rubber and silica, wherein (i) the silica is compounded in a proportion of 10-150 parts by weight per 100 parts by weight of the diene rubber, and (ii) a silicone oil having a polar group at its side chain or terminal is compounded in a proportion of 0.1-50 parts by weight per 100 parts by weight of the silica, and has excellent rebound resilience, tensile property, abrasion property and processability, and a preparation process thereof.Type: GrantFiled: September 17, 1997Date of Patent: January 18, 2000Assignee: Nippon Zeon Co., Ltd.Inventors: Masao Nakamura, Yukio Takagishi
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Patent number: 6015596Abstract: A fluorosilicon network polymer prepared by the reaction of a tetraholosilane of the formula 1: SiX4 with an organohologen compound of the formula 2: RZ , an insulating coating prepared therefrom, semiconductor devices coated therewith, and processes for producing the same. In said formulas, R represents at least monofluorinated alkyl or aryl; and X and Z represent each independently boromine, iodine or chlorine.Type: GrantFiled: October 27, 1997Date of Patent: January 18, 2000Assignee: Hitachi, Ltd.Inventors: Takao Miwa, Akira Watanabe, Osamu Ito, Minoru Matsuda
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Patent number: 6015870Abstract: Polysulfide silanes: (RO).sub.3 SiC.sub.3 H.sub.6 S.sub.x C.sub.3 H.sub.6 Si(OR).sub.3 are reacted with an anhydrous sulfur compound: M.sup.1.sub.2 S or M.sup.2 S and a halogenoalkoxysilane: XC.sub.3 H.sub.6 Si(OR).sub.3 to form polysulfide silanes: (RO).sub.3 SiC.sub.3 H.sub.6 S.sub.y C.sub.3 H.sub.6 Si(OR).sub.3 wherein R is methyl or ethyl, x is a positive number of 3 to 6 on the average, M.sup.1 is an alkali metal or ammonium, M.sup.2 is an alkaline earth metal or zinc, X is a halogen, and y is a positive number less than x on the average. Short chain polysulfide silanes can be prepared with the industrial advantages of safety, high yields and low cost.Type: GrantFiled: September 28, 1998Date of Patent: January 18, 2000Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Shoji Ichinohe, Hideyoshi Yanagisawa, Akira Yamamoto
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Patent number: 6015851Abstract: The present invention relates to rubber compositions containing an elastomer containing olefinic unsaturation and a bis anil compound of the formula ##STR1## where R.sup.1 and R.sup.2 may be the same or different and are independently selected from alkyls having from 1 to 5 carbon atoms and X is selected from the group consisting of H; OH; OAlk where Alk is an alkyl having from 1 to 3 carbon atoms; COOH and; COO.sup.- M.sup.+ where M is a metal selected from the group consisting of Zn, Na, Ca and Mg; and y is 0 to 2.Type: GrantFiled: June 17, 1998Date of Patent: January 18, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Neil Arthur Maly, Lawson Gibson Wideman, Lewis Timothy Lukich
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Patent number: 6013729Abstract: There is disclosed a moisture-curable elastomer composition obtained by dynamic heat treatment of a mixture comprising(a) an ethylene-.alpha.-olefin-unconjugated diene copolymer rubber,(b) a silicon-based crosslinking agent having two or more SiH groups within the molecule,(c) a hydrosilylation catalyst and(d) a hydrolyzable silane group-containing thermoplastic resin. Also disclosed is an elastomer composition resulting from molding of the above elastomer composition, followed by contacting with water, preferably in the presence of a silanol catalyst, to thereby cause crosslinking of the hydrolyzable silane group-containing thermoplastic resin. The elastomer composition of the present invention is excellent in rubber elasticity at high temperatures, low temperature impact resistance and oil resistance and have good moldability.Type: GrantFiled: April 1, 1998Date of Patent: January 11, 2000Assignee: Sumitomo Bakelite Co., Ltd.Inventors: Motoyoshi Tsujimoto, Tsuyoshi Iwasa
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Patent number: 6013754Abstract: Polydiorganosiloxane or polyhydroorganosiloxane compositions are prepared which are room-temperature curable without the presence of a catalyst and in particular an organotin catalyst. The compositions are useful as primer coating compositions to promote adhesion of room temperature vulcanizable (RTV) silicone rubber coatings, especially those RTVs containing polydiorganosiloxanes.Type: GrantFiled: January 16, 1998Date of Patent: January 11, 2000Assignee: Courtaulds Coatings, Inc. Heavy Duty DivisionInventors: Sylvain Fillion, Nick Tatavak
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Patent number: 6008284Abstract: A fast curing alkoxy-functional room temperature vulcanizing (RTV) composition which is curable in the presence of moisture comprising polymers comprising on average at least 1.2 alkoxysilyl chain terminations per molecule, a tetraalkoxytitanium compound, a filler, and an alkoxysilane, each component being added in amounts to satisfy defined molar ratios.Type: GrantFiled: December 23, 1997Date of Patent: December 28, 1999Assignee: Dow Corning CorporationInventors: Kimberly Kay Nylund, Richard Alan Palmer
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Patent number: 6008305Abstract: A primer for promoting adhesion between an elastomeric adhesive and a nonporous substrate containing a silane-modified saturated polyester polymer and an adhesion promoter in an anhydrous solvent. The invention is also directed to a silane-modified saturated polyester polymer, and an adhesion promoter made by the reaction of a multifunctional isocyanate and an organosilane.Type: GrantFiled: June 30, 1998Date of Patent: December 28, 1999Assignee: Adco Products, Inc.Inventors: Xiaobin Wang, Brian J. Briddell
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Patent number: 6007914Abstract: The present invention provides fibers and products produced therefrom, including nonwoven webs and adhesive articles. The fibers, which can be multilayer fibers, include a polydiorganosiloxane polyurea copolymer.Type: GrantFiled: December 1, 1997Date of Patent: December 28, 1999Assignee: 3M Innovative Properties CompanyInventors: Eugene G. Joseph, Ashish K. Khandpur, Audrey A. Sherman, Mieczyslaw H. Mazurek, Walter R. Romanko
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Patent number: 6008309Abstract: Organopolysiloxane particles useful as catalysts, are cross-linked, comprise a single molecule, have chemically bound metallic compounds and an average diameter of from 5 to 200 nm and are soluble in at least one solvent chosen from dichloromethane, pentane, acetone, ethanol and water to at least 1% by weight. At least 80% of the particles have a diameter which deviates a maximum of 30% from the average diameter.Type: GrantFiled: March 9, 1998Date of Patent: December 28, 1999Assignee: Wacker-Chemie GmbHInventors: Frank Baumann, Bernward Deubzer, Geck Michael, Schmidt Manfred
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Patent number: 6005051Abstract: Various polymeric compositions, including bicomponent networks and multiblock copolymers, containing polyisobutylene are synthesized by linking a plurality of polyisobutylene polymer chains with siloxane compounds having at least two SiH moieties. Specifically, bicomponent networks are synthesized by linking multifunctional polyisobutylenes, preferably tri-telechelic allyl-terminated polyisobutylenes, with multifunctional linear polysiloxanes, such as di-telechelic linear SiH-terminated polydimethylsiloxane, by hydrosilation. Similarly, multiblock copolymers are synthesized by endlinking difunctional allyl-terminated polyisobutylenes with difunctional SiH-terminated linear polysiloxanes, such as polydimethylsiloxanes, by hydrosilation.Type: GrantFiled: December 29, 1997Date of Patent: December 21, 1999Assignee: The University of AkronInventors: Joseph P. Kennedy, Melissa A. Sherman
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Patent number: 6005029Abstract: The present invention comprises an improved organic composite-plated steel plate which is obtained by applying a thermosetting resin to a chromate-coated alloy-plated steel plate and curing this, wherein, various aqueous resin compositions having the form of basic coating film formation components, such as, for example, aqueous vinyl modified epoxy ester resins, or aqueous vinyl modified epoxy ester resin / blocked isocyanate compound-types, or aqueous vinyl modified epoxy ester resin / blocked isocyanate compounds / colloidal silica-types, are used as the thermosetting resin described above.Type: GrantFiled: February 10, 1997Date of Patent: December 21, 1999Assignees: Dainippon Ink and Chemicals, Inc., Nippon Steel CorporationInventors: Shin'ichi Kuwamura, Atsushi Miyagaki, Kiyoshi Ohnishi, Masahide Amemoto, Hisao Odashima, Keitaro Shibata, Akihiro Kasuya, Kiyoshi Ohmori
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Patent number: 6005036Abstract: A composition containing an organic material subject to oxidative, thermal or actinic degradation can be stabilized by an effective amount of at least one polysilane compound of formula I ##STR1## Preferred compounds are where q is zero, p is 2 to 50, m is zero, R.sub.1 is alkyl, phenyl or benzyl, and A and B are independently hydrogen or a group --Si(E).sub.3 where E is alkyl. These compounds can also be copolymeric having a random, alternate or block distribution of individual structural units. These compounds are particularly suitable as process stabilizers.Type: GrantFiled: December 22, 1997Date of Patent: December 21, 1999Assignee: Ciba Specialty Chemical CorporationInventors: Primo Carrozza, Valerio Borzatta, Chryssostomos Chatgilialoglu
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Patent number: 6005060Abstract: The present invention provides an epoxy resin composition which can provide a cured composite product having a high heat resistance, and an excellent mechanical strength at a high temperature.The present invention provides an epoxy resin composition comprising, as essential components: (a) an epoxy resin; (b) a curing agent for epoxy resins, (c) a silane compound having at least one epoxy group or a group being capable of reacting by addition to an epoxy group in a molecule, and at least two alkoxy groups connected to silicone atom in a molecule, and (d) a catalyst for condensation polymerization of a silane compound, and a cured composite product obtained by curing the composition.Type: GrantFiled: April 21, 1998Date of Patent: December 21, 1999Assignee: Shell Oil CompanyInventors: Yasuyuki Murata, Mitsukazu Ochi, Norio Tohriiwa