With Ethylenically Unsaturated Reactant Patents (Class 524/862)
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Patent number: 7090923Abstract: The present invention relates to curable alkenyl based silicone release coating compositions having improved adhesion to paper and polymeric substrates. Furthermore the present invention relates to the process for making a silicone release coating with improved adhesion to paper and polymeric substrates.Type: GrantFiled: February 12, 2003Date of Patent: August 15, 2006Assignee: General Electric CorporationInventors: Roy Melvin Griswold, Richard Paul Eckberg, Slawomir Rubinsztajn, Stanislaw Slomkowski, Anna Kowalewska, Stanislaw Sosnowski
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Patent number: 7074853Abstract: Disclosed is a compound of one of the formulae wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 each, independently of the others, is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, R11 and R12 each, independently of the others, is an alkylene group, an arylene group, an arylalkylene group, or an alkylarylene group, G is a cationic moiety, A is an anionic moiety, n is an integer representing the number of repeat —OSi(R7)(R8)— monomer units, a is an integer representing the number of repeat —OSi(R10)(R12-lightfastness moiety)- monomer units, and c is an integer representing the number of repeat —OSi(R9)(R11-hydrophilic moiety)- monomer units.Type: GrantFiled: August 6, 2004Date of Patent: July 11, 2006Assignee: Xerox CorporationInventors: Thomas W. Smith, Kathleen M. McGrane
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Patent number: 7059627Abstract: A silicone rubber coating composition which cures into a silicone rubber having a tear strength of 25–50 kN/m and a peeling bond strength of 30–60 N/cm is suited for coating of hollow weave type air bags. A hollow weave type air bag coated with the coating composition can be instantaneously inflated while the bag prevents the silicone rubber film from being peeled from the base fabric, eliminates inflating gas leakage, and retains an acceptable inflation time.Type: GrantFiled: May 7, 2003Date of Patent: June 13, 2006Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masayuki Ikeno, Atsushi Yaginuma, Syuichi Azechi, Takeshi Miyao
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Patent number: 7026397Abstract: The present invention is constituted of a curable composition which comprises, as essential components, the following four components: (A) a vinyl polymer having at least one hydrosilylatable alkenyl group within the molecule, (B) a hydrosilyl group-containing compound, (C) a hydrosilylation catalyst, and (D) an aliphatic unsaturated bond-containing compound, and which may further comprise (E) an amine compound, or the following three components: (A) a vinyl polymer having at least one hydrosilylatable alkenyl group within the molecule, (B) a hydrosilyl group-containing compound, and (G) an organic compound having at least one hydrosilylatable alkenyl or alkynyl group within the molecule [other than the above-mentioned component (A)], or the following three components: (A) a vinyl polymer having at least one hydrosilylatable alkenyl group within the molecule, (B) a hydrosilyl group-containing compound, and (H) carbon black.Type: GrantFiled: February 8, 2001Date of Patent: April 11, 2006Assignee: Kaneka CorporationInventors: Nobuhiro Hasegawa, Yoshiki Nakagawa
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Patent number: 7026387Abstract: The present invention relates to a vulcanizable rubber composition which can be used for the manufacture of tires, a process for the preparation of this composition and a tire, the tread of which comprises such a composition, the latter having improved hysteresis and physical properties in the vulcanized state, while retaining satisfactory processing properties. A rubber composition according to the invention comprises a reinforcing white filler, and is such that it comprises at least one diene block polymer which is intended to interact with said reinforcing white filler and which comprises on at least one of its chain ends a polysiloxane block which ends in a trialkylsilyl group, said polysiloxane block corresponding to the formula: [—SiR1R2O—]x-SiR3R4R5, in which R1, R2, R3, R4 and R5 represent alkyl groups having from 1 to 20 carbon atoms, and in which x is a natural integer other than zero.Type: GrantFiled: November 12, 2003Date of Patent: April 11, 2006Assignee: Michelin Recherche et Technique S.A.Inventors: Pierre Robert, Jean-Luc Cabioch, Jean-Michel Favrot
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Patent number: 7019069Abstract: Resinous composition comprising: (A) 100 weight parts of (R2SiO2/2)w(RSiO3/2)x(SiO4/2)y(O1/2R1)z wherein R is selected from the group consisting of monovalent hydrocarbon groups having 1 to 10 carbon atoms, R1 is selected from the group consisting of the hydrogen atom and saturated hydrocarbon groups having from 1 to 6 carbon atoms, w is a number from 0 to 0.2, x is a number from 0.4 to 0.9, y is a number from 0.1 to 0.6, z is a number from 0.1 to 0.5, and (w+x+y)=1; (B) 20 to 150 weight parts of an alcohol-based solvent; (C) 100 to 1000 weight parts of a solvent selected from the group consisting of hydrocarbon-based solvents and polydimethylsiloxanes described by the formula Me3SiO(Me2SiO)nSiMe3, wherein Me is the methyl group and n has a value of 0 or 1; (D) 1 to 100 weight parts of a coupling agent selected from the group consisting of alkoxysilanes and silane coupling agents; (E) 0.1 to 20 weight parts of a condensation catalyst, and (F) 0.Type: GrantFiled: February 12, 2001Date of Patent: March 28, 2006Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Hideki Kobayashi, Mari Tateishi, Toru Masatomi
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Patent number: 7005475Abstract: The present invention relates to curable silicone coating compositions having improved adhesion to polymeric substrates. The present invention also relates to additives that improve adhesion of silicone pressure sensitive adhesive coating compositions to polymeric substrates. Furthermore the present invention relates to the process for making a silicone pressure sensitive adhesive coating with improved adhesion to polymeric substrates.Type: GrantFiled: June 10, 2003Date of Patent: February 28, 2006Assignee: General Electric CompanyInventor: Roy Melvin Griswold
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Patent number: 6962752Abstract: A curable composition comprising: (A) a branched polyfluorodialkenyl compound represented by a general formula (1): CH2?CH—(X)a-Rf1-(X?)a—CH?CH2??(1) wherein, X and X? are bivalent groups such as —CH2— and —CH2O—, a represents, independently, either 0 or 1, and Rf1 is a specific bivalent fluorine-containing group, (B) a branched polyfluoromonoalkenyl compound represented by a general formula (2): Rf2-(X?)a—CH?CH2??(2) wherein, X? and a are as defined above, and Rf2 is a specific fluorine-containing group, (C) an organohydrogensiloxane compound with at least two hydrogen atoms bonded to silicon atoms, and (D) a platinum group metal catalyst; as well as a low bleeding gel type cured product obtained by curing such a composition, and an electrical or electronic component sealed or encapsulated using such a cured product. The gel type cured product displays very little bleeding of free oil constituents from the gel as a result of stress such as pressure fluctuation or heat history.Type: GrantFiled: January 9, 2003Date of Patent: November 8, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kenichi Fukuda, Mikio Shiono
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Patent number: 6884660Abstract: The present invention relates to a thermoconducting silicone composition having a viscosity at 25° C. before curing of 10-1,000 Pa·s, a method of installing the composition, and a heat dissipating structure comprising the silicone composition.Type: GrantFiled: December 11, 2002Date of Patent: April 26, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroaki Tetsuka, Kunihiro Yamada, Kunihiko Mita
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Patent number: 6881416Abstract: Organopolysiloxane gel products having a variety of physical forms and which produce a silky feel when applied to the skin are prepared by reacting an unsaturated organopolysiloxane resin, an Si—H functional organosiloxane crosslinker bearing pendant hydrido functionality, a C4 or higher unsaturated hydrocarbon, and optionally, an unsaturated hydrophile component. Products ranging from viscous liquids, creamy gels, pastes, and soft powders may be obtained. The products are highly useful in formulating cosmetic and pharmaceutical products.Type: GrantFiled: April 8, 2002Date of Patent: April 19, 2005Assignee: Wacker Chemical CorporationInventor: Bryan E. Fry
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Patent number: 6878773Abstract: In a process for the preparation of an emulsion of a silicone organic block copolymer in water, a polydiorganosiloxane having terminal reactive groups (A), an organic material having terminal groups (B) which are reactive with the groups (A) and a catalyst are emulsified in water with a surfactant and the resulting emulsion is subjected to conditions under which the reaction between groups (A) and (B) proceeds in the presence of the catalyst, thereby forming a copolymer chain containing polysiloxane blocks and blocks of organic material. Preferred emulsions comprise a copolymer comprising polydiorganosiloxane blocks and organic blocks, having a viscosity in the range 10 to 1000000 Pa.s and a mean particle size of 0.3 to 1000 micrometers.Type: GrantFiled: January 30, 2001Date of Patent: April 12, 2005Assignee: Dow Corning S.A.Inventors: Leon Andre Marteaux, Anne-Lise Girboux
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Patent number: 6861061Abstract: A water-in-oil (W/O) emulsion with a discontinuous aqueous phase dispersed in a continuous oil phase has in the continuous oil phase a linear silicone polyether, an ?,?-diene crosslinked silicone elastomer, and a nonionic organic emulsifier. The W/O emulsion is otherwise free of silicone elastomers prepared using unsaturated compounds containing silicon atoms. Either the discontinuous aqueous phase of the W/O emulsion or the continuous oil phase of the W/O emulsion contains a water soluble or oil soluble active ingredient such as a vitamin.Type: GrantFiled: December 19, 2001Date of Patent: March 1, 2005Assignee: Dow Corning CorporationInventors: Bartley Dean Maxon, Michael Stephen Starch
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Patent number: 6861458Abstract: Disclosed is a compound of one of the formulae wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 each, independently of the others, is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, R11 and R12 each, independently of the others, is an alkylene group, an arylene group, an arylalkylene group, or an alkylarylene group, G is a cationic moiety, A is an anionic moiety, n is an integer representing the number of repeat —OSi(R7)(R8)— monomer units, a is an integer representing the number of repeat —OSi(R10)(R12-lightfastness moiety)— monomer units, and c is an integer representing the number of repeat —OSi(R9)(R11-hydrophilic moiety)— monomer units.Type: GrantFiled: November 15, 2001Date of Patent: March 1, 2005Assignee: Xerox CorporationInventors: Thomas W. Smith, Kathleen M. McGrane
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Patent number: 6838499Abstract: A curable composition comprising a liquid base polymer, a silicone elastomer powder, and a crosslinking agent is in putty form prior to curing, tack-free to the hand, easy to work, and adherent.Type: GrantFiled: February 19, 2003Date of Patent: January 4, 2005Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Tsuneo Kimura
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Publication number: 20040266945Abstract: A cross-linkable and cross-linked organosilicon polymer which is prepared from a mixture of a reactive polysiloxane resin having both reactive carbon-carbon double bonds and silicone-hydrogen groups, characterized by alternating structures of polycyclic polyene residue and cyclic (or tetrahedral) polysiloxane residue, and either vinyl terminated fluorine-containing polysiloxane or vinyl terminated phenyl-substituted siloxane. In an alternative embodiment, the polymer comprises a mixture of vinyl terminated phenyl-substituted polysiloxane and vinyl functional fluorosilicone elastomer with the cross-linkable and cross linked organosilicon polymer.Type: ApplicationFiled: July 29, 2004Publication date: December 30, 2004Inventors: Elizabeth M. Walker, Jiazhong Luo, Rose Ann Schultz, Katharine Louise Pearce
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Publication number: 20040209998Abstract: The present invention relates to a biocompatible polymer composition, suitable for in vivo vessel repair, comprising a matrix pre-polymer, a filler and a curing agent, wherein said composition wherein said biocompatible polymer composition is curable in the presence of a curing catalyst at 37° C. to form a cured material with an elongation until rupture of at least 5% and an elastic modulus of at least 1 MPa.Type: ApplicationFiled: January 2, 2004Publication date: October 21, 2004Applicant: Vesalius N.V.Inventor: Alexander Cornelis de Vries
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Patent number: 6806339Abstract: A branched siloxane contains at least three aliphatically unsaturated hydrocarbon groups, is terminated by units of the formula RaRb2SiO1/2 and otherwise consists of: i) one or more units of the formula(SiO4/2); and ii) from 15 to 995 units of the formula Rb2SiO2/2 which units (i) and (ii) may be inter-linked in any appropriate combination. The invention includes a method of making the branched siloxane and release coating and release modifier compositions containing the branched siloxane.Type: GrantFiled: November 5, 2001Date of Patent: October 19, 2004Assignee: Dow Corning LimitedInventors: Stephen Edward Cray, John Francis
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Patent number: 6805556Abstract: The present invention discloses a silicone rubber with improved adhesive properties; a composite structure in which a base member formed from a synthetic resin or metal is bonded firmly and directly to silicone rubber; a denture in which a biocompatible silicone rubber is firmly bonded to a section of a denture bed that contacts the body; and a method for making the denture. Methyl methacrylate is added to a linear polysiloxane and polymerized in a predetermined molding cavity, and methyl polymethacrylate is formed on at least the surface of the molded silicone rubber. The silicone rubber resulting from this process provides superior adhesive properties. A section of a base member, such as a main unit or an auxiliary member of a product, that is to be bonded with silicone rubber is extended into the predetermined molding cavity. The molding cavity is filled with a linear polysiloxane to which a monomer is added. This results in a composite structure in which silicone rubber is bonded to the base member.Type: GrantFiled: November 25, 2002Date of Patent: October 19, 2004Inventor: Yoshinori Kiyomi
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Patent number: 6803395Abstract: Disclosed is an ink composition which comprises water, a colorant, and a lightfastness agent which is a polysiloxane having thereon a hydrophilic moiety and a lightfastness moiety. Also disclosed are printing processes using the ink.Type: GrantFiled: November 15, 2001Date of Patent: October 12, 2004Assignee: Xerox CorporationInventors: Thomas W. Smith, Kathleen M. McGrane
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Patent number: 6797772Abstract: A composition comprises the product obtained by homogeneously blending: (A) 100 parts by weight of a polyorganosiloxane containing at least two alkenyl radicals per molecule, (B) an organohydrogensiloxane containing at least two silicon-bonded hydrogen atoms per molecule in a quantity sufficient to provide from 0.5 to 3 silicon-bonded hydrogen atoms per alkenyl radical of (A), (C) from 50-2000 parts by weight of silver particles pre-treated with an organosilicon compound selected from the group consisting of (i) alkoxy group(s)-containing silanes and (ii) organosiloxanes, (D) a platinum catalyst, (E) up to 20 weight percent based on the weight of (A) of an organosilicon compound containing at least one silicon-bonded alkoxy group per molecule, and (F) from 0.001 to 5 parts by weight per 100 parts by weight of (A) of a cure inhibitor.Type: GrantFiled: January 18, 2002Date of Patent: September 28, 2004Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Kazumi Nakayoshi, Katsutoshi Mine, Rikako Tazawa
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Patent number: 6791839Abstract: A composition that can be used to prepare a thermal interface material includes: A) a curable matrix having a curing temperature, B) a metal filler having a low melting point, optionally C) a spacer, and optionally D) a conductive filler. The temperature at which component B) commences softening is less than the curing temperature of component A). A thermal interface material is prepared by: 1) interposing the composition between an electronic component and a heat spreader to form a bondline, 2) heating the composition to a temperature higher than the temperature at which component B) commences softening but less than the curing temperature of component A) and optionally applying pressure to the composition, and 3) heating the composition to a temperature greater than or equal to the curing temperature of component A). The average particle size of component B) is greater than or equal to the bondline thickness.Type: GrantFiled: June 25, 2002Date of Patent: September 14, 2004Assignee: Dow Corning CorporationInventor: Dorab Edul Bhagwagar
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Patent number: 6777493Abstract: A radial end-modified styrene-conjugated diene block copolymer having a general formula 1. The copolymer is obtained by synthesizing a styrene-conjugated diene block copolymer by way of copolymerization using an organic lithium initiator in the presence of a nonpolar solvent and then coupling the anionic active end of the resulting copolymer with a polyfunctional polysiloxane: (PS-PD)3Si—CH2CH2—[SiO(CH3)2—]nSi(CH3)2R Formula 1 wherein, PS is polystyrene, PD is polydiene such as polyisoprene or polyisoprene-polybutadiene, R is hydroxy group or -(PD-PS), and n is an integer of 1 to 100. The block copolymer based adhesives have low melt viscosity and excellent adhesive strength.Type: GrantFiled: October 30, 2002Date of Patent: August 17, 2004Assignee: Korea Kumho Petro Chemical Co., Ltd.Inventors: Young Hoon Ko, Sun Woo Cheen
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Patent number: 6761673Abstract: A liquid form addition curable silicone rubber composition for forming a fluororesin covered fixing roller is provided. This composition includes (a) 100 parts by weight of an organopolysiloxane with at least two alkenyl groups bonded to non-terminal silicon atoms; (b) an organohydrogenpolysiloxane with at least two silicon-bonded hydrogen atoms, in a sufficient quantity to produce a molar ratio of silicon-bonded hydrogen atoms within said constituent (b) relative to silicon-bonded alkenyl groups within said constituent (a) of 0.4 to 5.0; (c) an effective quantity of a platinum based catalyst; (d) 0.1 to 10 parts by weight of dry process silica; and (e) 0.05 to 5 parts by weight of a cyclic diorganopolysiloxane with at least three silicon-bonded alkenyl groups. This composition is used for formation of the silicone rubber layer of a fixing roller made up of a metal core, a silicone rubber layer on the core, and a fluorine based coating provided on the rubber layer.Type: GrantFiled: April 4, 2002Date of Patent: July 13, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Shigeki Shudo
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Patent number: 6743868Abstract: A method for making thermoplastic elastomeric compositions is disclosed wherein a polyamide, a silicone base, a stabilizer, and optional compatibilizer are first mixed, then a hydrosilation catalyst and subsequently an organohydrido silicon compound are added, and the silicone base is dynamically vulcanized.Type: GrantFiled: July 18, 2002Date of Patent: June 1, 2004Assignee: Dow Corning CorporationInventors: Frances Marie Fournier, Richard Leroy Rabe
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Patent number: 6737458Abstract: The invention relates to silicone compositions which can be crosslinked to give elastomers and which comprises the constituents (A) from 20 to 99% by weight of polyorganosiloxane containing at least two alkenyl groups per molecule and having a viscosity at 25° C. of from 0.1 to 500,000 Pa.s, (B) from 1 to 80% by weight of non-reinforcing filler having a mean particle size of from 0.1 to 200 &mgr;m and a specific surface area of <100 m2/g, (C) a crosslinking component comprising (C1) an organic peroxide, or (C2) an organosilicon compound containing at least two SiH functions per molecule in combination with a hydrosilylation catalyst, and (D) a nitrogen compound which is selected from amino, ammonium and amido compounds and nitrogen-containing organosilicon compounds. The compositions exhibit improved thermal stability and resistance to oil at elevated temperatures.Type: GrantFiled: January 8, 2003Date of Patent: May 18, 2004Assignee: Wacker-Chemie GmbHInventors: Christof Woerner, Richard Birneder
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Patent number: 6716908Abstract: There are disclosed alkoxysilyl functional silicone based materials that are thermodynamically stable, methods for making them and their uses. The methods comprise cross-linking of reactants that are dispersed in a diluent.Type: GrantFiled: January 30, 2002Date of Patent: April 6, 2004Assignee: Dow Corning CorporationInventors: Arnold Wade Lomas, William James Schulz, Jr.
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Patent number: 6713569Abstract: A method for preparing a thermoplastic elastomer is disclosed, said method comprising (I) mixing (A) a rheologically stable polyamide resin having a melting point or glass transition temperature of 25° C. to 275° C., (B) a silicone base comprising (B′) 100 parts by weight of a diorganopolysiloxane gum having a plasticity of at least 30 and having an average of at least 2 alkenyl radicals in its molecule and (B″) 5 to 200 parts by weight of a reinforcing filler, the weight ratio of said silicone base to said polyamide resin is from 35:65 to 85:15, (C) 0.Type: GrantFiled: October 26, 2001Date of Patent: March 30, 2004Assignee: Dow Corning CorporationInventors: Igor Chorvath, Frances Marie Fournier, Michael Kang-Jen Lee, Dawei Li, Robert Leo Oldinski, Richard Leroy Rabe, Jeffrey Paul Sage, Dean Curtis Gray, Yongjun Lee, Koji Nakanishi
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Patent number: 6706811Abstract: The invention discloses an efficient and convenient method for the preparation of an aqueous emulsion of an organopolysiloxane having long-chain alkyl groups bonded to the silicon atoms. Instead of dispersing and emulsifying an organopolysiloxane modified in advance with long-chain alkyl groups in an aqueous medium, as is the case in the prior art method, an organohydrogenpolysiloxane having silicon-bonded hydrogen atoms and a long-chain &agr;-olefin compound are co-emulsified in an aqueous medium containing a surface active agent and this aqueous emulsion is heated under agitation with addition of a catalytic platinum compound so as to effect the in situ hydrosilation reaction between the silicon-bonded hydrogen atoms in the organohydrogenpolysiloxane and the ethylenically unsaturated bonds in the &agr;-olefin compound. The aqueous emulsion prepared by the inventive method exhibits excellent stability against long-term storage, dilution with water and mechanical shearing force.Type: GrantFiled: June 3, 2002Date of Patent: March 16, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Hiroshi Ohashi
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Patent number: 6696161Abstract: A silicone composition comprising a first organopolysiloxane containing T units, a second organopolysiloxane, an organohydrogenpolysiloxane, and a platinum catalyst cures into a coating that adheres well to plastic film substrates and even to polyester film substrates which are difficult for conventional solventless silicone compositions to adhere. The cured coating exhibits release properties to pressure-sensitive adhesives, and a film substrate coated with the cured silicone composition provides a release film.Type: GrantFiled: July 12, 2002Date of Patent: February 24, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Shinji Irifune, Masahiko Ogawa
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Patent number: 6682823Abstract: It is the object of the present invention to provide a curable composition capable of giving a polymer electrolyte showing a high level of ionic conductivity and excellent mechanical strength as well. The invention provides a curable composition for polymer electrolyte which comprises the following constituents (A) to (D) as essential constituents: (A) a polysiloxane having a polyethylene oxide structure-containing group and/or a cyclic carbonate structure-containing group as a substituent on a silicon atom and having two or more SiH groups; (B) a compound having at least one structure selected from the group consisting of a phenylene unit, a siloxy linkage, an Si—N bond, a carbonyl group, an amide linkage and an amino group and having two or more alkenyl groups; (C) a hydrosilylation catalyst; and (D) an electrolyte salt compound.Type: GrantFiled: May 11, 2001Date of Patent: January 27, 2004Assignee: Kaneka CorporationInventor: Kenji Okada
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Patent number: 6670418Abstract: Crosslinkable organopolysiloxane compositions, comprising; (1) an organopolysiloxane which contains SiC-bonded radicals with aliphatic carbon—carbon multiple bonds, and (2) an organopolysiloxane with Si-bonded hydrogen atoms or, instead of (1) and (2), or (3) an organopolysiloxane which contains SiC-bonded radicals with aliphatic carbon—carbon multiple bonds and Si-bonded hydrogen atoms, (4) a catalyst which promotes the addition of Si-bonded hydrogen onto an aliphatic multiple bond, (5) a reinforcing filler (6) a non-reinforcing filler having an average particle diameter of less than 30 &mgr;m and a BET surface area of less than 30 m2/g and, optionally, further substances.Type: GrantFiled: January 2, 2003Date of Patent: December 30, 2003Assignee: Wacker-Chemie GmbHInventors: Johann Mueller, Adolf Eller
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Patent number: 6667362Abstract: The present invention relates to a vulcanizable rubber composition which can be used for the manufacture of tires, a process for the preparation of this composition and a tire, the tread of which comprises such a composition, the latter having improved hysteresis and physical properties in the vulcanized state, while retaining satisfactory processing properties. A rubber composition according to the invention comprises a reinforcing white filler, and is such that it comprises at least one diene block polymer which is intended to interact with said reinforcing white filler and which comprises on at least one of its chain ends a polysiloxane block which ends in a trialkylsilyl group, said polysiloxane block corresponding to the formula: [—SiR1R2O—]x-SiR3R4R5, in which R1, R2, R3, R4 and R5 represent alkyl groups having from 1 to 20 carbon atoms, and in which x is a natural integer other than zero.Type: GrantFiled: December 20, 2000Date of Patent: December 23, 2003Assignee: Michelin Recherche et Technique S.A.Inventors: Pierre Robert, Jean-Luc Cabioch, Jean-Michel Favrot
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Patent number: 6649704Abstract: A method for preparing a thermoplastic elastomer is disclosed, said method comprising (I) mixing (A) a rheologically stable polyamide resin having a melting point or glass transition temperature of 25° C. to 275° C.Type: GrantFiled: October 26, 2001Date of Patent: November 18, 2003Assignee: Dow Corning CorporationInventors: Christopher Michael Brewer, Igor Chorvath, Frances Marie Fournier, Michael Kang-Jen Lee, Dawei Li, Robert Leo Oldinski, Lenin James Petroff, Richard Leroy Rabe, David Joseph Romenesko, Yongjun Lee, Koji Nakanishi
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Patent number: 6649258Abstract: A heat conductive silicone composition comprising (A) an alkenyl group-bearing organopolysiloxane, (B) an organohydrogenpolysiloxane having Si—H groups on side chains, (C) an organohydrogenpolysiloxane having an Si—H group at either end, (D) a filler consisting of aluminum powder and zinc oxide powder in a weight ratio of from 1/1 to 10/1, (E) a platinum catalyst, and (F) a regulator has a high thermal conductivity and maintains flexibility even when exposed to heat for an extended period of time.Type: GrantFiled: April 29, 2002Date of Patent: November 18, 2003Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Kunihiro Yamada, Kenichi Isobe
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Patent number: 6602964Abstract: Disclosed herein is a composition comprising: A) a moisture curable polymer selected from the group consisting of silylated polyurethanes, silylated polyethers, and mixtures thereof, and B) a silicone oligomer of the formula: [R3SiO1/2]m[O1/2Si(R)2O1/2]n[SiO3/2R]o[SiO4/2]p (I) wherein: each R is independently selected from the group consisting of B, R1, —OR2, R3, and R4; B is an organosilyl functional group bridged to the Si atom of the siloxane oligomer backbone by a Si—C bond; each R1 is independently a saturated or aromatic hydrocarbon group of 1 to 16 carbon atoms; each R2 is independently a group as defined for R1 or an acyl group; each R3 is independently a monovalent organic group containing an aliphatic unsaturated hydrocarbon group; each R4 is a monovalent organic group linked to the Si atom of the siloxane oligomer backbone by a Si—C bond that does not include an aliphatic unsaturated hydrocarbon group and that has thereType: GrantFiled: February 4, 2002Date of Patent: August 5, 2003Assignee: Crompton CorporationInventors: Misty Huang, Richard E. Handel, Herbert Petty
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Patent number: 6590010Abstract: By blending novel organosiloxane polymers of the invention with a crosslinking agent and a photoacid generator, photo-curable resin compositions are formulated which can be exposed to radiation in a broad wavelength range and readily form a thin film without oxygen attack. From the compositions, fine patterns having improved dry etching resistance can be formed. Cured coatings of the compositions having improved substrate adhesion, heat resistance, and electrical insulation are suitable as a protective film for electric and electronic parts.Type: GrantFiled: September 12, 2001Date of Patent: July 8, 2003Assignee: Shin-Etsu Chemicals, Co., Ltd.Inventors: Hideto Kato, Takafumi Ueda, Tomoyoshi Furihata
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Patent number: 6569536Abstract: A thermoconductive liquid silicone rubber composition is provided for fixing rolls. The composition is capable of producing silicone rubber of superior thermal conductivity and small compression set after curing. The thermoconductive liquid silicone rubber composition contains (A) a diorganopolysiloxane with at least two silicon bonded alkenyl groups per molecule, (B) an alumina powder with an average particle size not more than 10 &mgr;m and an ignition loss of not more than 0.15 weight percent, (C) an organohydrogenpolysiloxane having at least two silicon bonded hydrogen atoms per molecule, and (D) a platinum catalyst. Fluororesin coated fixing rolls can be fabricated by providing a fluororesin layer on the peripheral surface of a roll shaft, with the silicone rubber layer interposed between it and the surface.Type: GrantFiled: July 24, 2001Date of Patent: May 27, 2003Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Yuichi Tsuji, Hiroaki Yoshida, Yutaka Oka
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Patent number: 6569958Abstract: A method of preparing a thermoplastic elastomer, and compositions thereof, are disclosed comprising: (I) mixing (A) a thermoplastic resin comprising more than 50 percent by volume of a polyester resin having a softening point of 23° C. to 300° C., (B) a silicone elastomer comprising a diorganopolysiloxane, where the weight ratio of said silicone elastomer to said thermoplastic resin is from 35:65 to 85:15, (C) a glycidyl ester compatibilizer, (D) an organohydrido silicon compound, and (E) a hydrosilation catalyst, components (D) and (E) being present in an amount sufficient to cure said diorganopolysiloxane; and (II) dynamically vulcanizing said diorganopolysiloxane, wherein at least one property of the thermoplastic elastomer selected from tensile strength or elongation is at least 25% greater than the respective property for a corresponding simple blend wherein said diorganopolysiloxane is not cured and said thermoplastic elastomer has an elongation of at least 30%.Type: GrantFiled: October 19, 2001Date of Patent: May 27, 2003Assignee: Dow Corning CorporationInventors: Craig Steven Gross, Michael Kang-Jen Lee, Jun Liao
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Patent number: 6569955Abstract: A method for preparing a thermoplastic elastomer is disclosed, said method comprising: (I) mixing (A) a Theologically stable polyamide resin having a melting point or glass transition temperature of 25° C. to 275° C., (B) a silicone base comprising a diorganopolysiloxane gum having a plasticity of at least 30 and having an average of at least 2 alkenyl groups in its molecule and optionally (B″) 5 to 200 parts by weight of a reinforcing filler, the weight ratio of said silicone base to said polyamide resin is from 35:65 to 85:15, (C) a compatibilizer selected from glycidyl ester polymers or organofunctional grafted polyolefins, (D) an organohydrido silicon compound which contains an average of at least 2 silicon-bonded hydrogen groups in its molecule and (E) a hydrosilation catalyst, components (D) and (E) being present in an amount sufficient to cure said diorganopolysiloxane (B′); and (II) dynamically curing said diorganopolysiloxane (B′).Type: GrantFiled: October 19, 2001Date of Patent: May 27, 2003Assignee: Dow Corning CorporationInventors: Christopher Michael Brewer, Igor Chorvath, Frances Marie Fournier, Craig Steven Gross, Michael Kang-Jen Lee, Dawei Li, Richard Leroy Rabe
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Patent number: 6562737Abstract: The invention concerns a coating composition capable of being cold vulcanised (EVF), characterised in that it comprises, in a mixture: (1) at least one polyorganosiloxane having, per molecule, at least two C2-C6 alkenyl groups bound to silicon; (2) at least one polyorganosiloxane having, per molecule, at least two hydrogen atoms bound to silicon; (3) a catalytically effective amount of at least one catalyst, consisting of at least one metal belonging to the platinum group; (4) an adherence promoter; (5) optionally a reinforcing system which can be at least a polyorganosiloxane resin and/or a reinforcing filler; (6) optionally at least one cross-linkage inhibitor; (7) and mineral or organic hollow microspheres.Type: GrantFiled: May 23, 2000Date of Patent: May 13, 2003Assignee: Rhodia ChimieInventors: Fabrice Bohin, Bernard Dalbe, Laurent Dumont, Jens Heilmann, Uwe Kaiser, Alain Pouchelon, Christian Pusineri, Joachim Walz
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Patent number: 6531542Abstract: Spherical crosslinked organic particles exhibit a good dispersibility in thermoplastic resins, thermosetting resins, paints, coatings, cosmetics, rubbers, and toners and carriers employed in electrostatic development. Highly efficient methods for preparing these crosslinked organic particles are provided. Suspensions of crosslinked organic particles have excellent handling properties, and are highly blendable with other components. Highly efficient methods for preparing these suspensions are also provided. The spherical crosslinked organic particles have an average particle size of 0.Type: GrantFiled: July 26, 2000Date of Patent: March 11, 2003Assignee: Dow Corning Toray Silicone Company, Ltd.Inventors: Yoshitsugu Morita, Kazuo Kobayashi, Ryuji Tachibana
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Patent number: 6515043Abstract: An oligomer of the formula: [R3SiO½]m[O½Si(R2)O½]n[SiO{fraction (3/2)}R]o[SiO{fraction (4/2)}]p (I) wherein each R is selected individually from the group consisting of R1, —OR2 and —OR3; each R1 is independently a substituted or unsubstituted hydrocarbon group; each R2 is a C1-C6 alkyl group or an acyl group; and each R3 is a independently an alkyl or alkenyl group having at least 8 carbon atoms; with the provisos that if R3 is alkenyl, there is no unsaturation within two carbon atoms adjacent to the oxygen atom of the —OR3 group; at least one R group is —OR3; at least one quarter of all R groups are —OR2 or —OR3; m=2 to 20; n=0 to 50; o=0 to 20; and p=0 to 10. The oligomer is a useful component of in insulation formulations for wire and cable used in underground locations.Type: GrantFiled: March 20, 2001Date of Patent: February 4, 2003Assignee: Crompton CorporationInventors: Herbert B. Petty, Robert Pickwell
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Patent number: 6511657Abstract: A two-phase roll-on antiperspirant and/or deodorant is described which comprises: (a) a clear, translucent or opaque non-polar phase having a viscosity in the range of 20 cps-9,000 made by combining: a cross-linked or partially cross-linked non-emulsifying siloxane elastomer; 0.1-70 weight % of one or more low viscosity, lipophilic emollients; (b) a clear, translucent or opaque polar phase have a viscosity in the range of 20-9,000 cps made by combining: one or more members selected from the group consisting of water, glycols and polyhydric alcohols; and an antiperspirant active salt which is soluble or suspendible in the polar phase; wherein the polar phase comprises (i) a sufficient amount of water, glycols or polyhydric alcohols to dissolve or suspend the antiperspirant active, and (ii) optionally may comprise up to 30 weight % water; up to 16.00 weight % of ethyl alcohol; up to 16 weight % isopropyl alcohol; or mixtures of the foregoing; (iii) 0.1-2.Type: GrantFiled: April 20, 2001Date of Patent: January 28, 2003Assignees: Colgate-Palmolive Company, Dow Corning CorporationInventors: Esther Avendano, Adriana Urrutia-Gutierrez, Wilson Lee, Xiaozhong Tang
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Patent number: 6491980Abstract: An aqueous emulsion comprises (1) organopolysiloxanes containing SiC-bonded aliphatically unsaturated groups in the terminal units, (2) organopolysiloxanes containing at least 3 Si-bonded hydrogen atoms, (3) a catalyst promoting the addition of Si-bonded hydrogen to aliphatic unsaturation, (4) organosilicon adhesion promoters, (5) silicone resins, (6) an emulsifier, (7) water, and (8) carbon black. The emulsions may be applied to fabric prior to drying and shrinking, and vulcanized while drying the fabric. The coated fabrics exhibit ideal characteristics for use as airbag material.Type: GrantFiled: November 23, 1999Date of Patent: December 10, 2002Assignee: Wacker-Chemie GmbHInventors: Johann Müller, Martin Stömmer
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Patent number: 6479582Abstract: A rubber composition is obtained which exhibit improved strength, abrasion resistance and antistatic properties, as well as low rolling resistance. The rubber composition is characterized as being rendered conductive by incorporating into rubber a silica filler having a conductive surface layer as composed of carbon or conductive tin oxide.Type: GrantFiled: November 18, 1999Date of Patent: November 12, 2002Assignee: Otsuka Chemical Co., Ltd.Inventors: Yukiya Hareyama, Hidetoshi Ogawa
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Patent number: 6471985Abstract: In one embodiment, the present invention relates to a method of treating a wound, involving applying to the wound a room temperature vulcanizing silicone composition comprising a crosslinkable polymer, a crosslinking agent, and a catalyst; permitting the room temperature vulcanizing silicon composition to cure thereby forming a membrane having a thickness from about 0.1 mm to about 5 mm; and removing the membrane from the wound after at least about 1 day.Type: GrantFiled: June 4, 1999Date of Patent: October 29, 2002Inventors: Bahman Guyuron, Michael Doliveck
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Patent number: 6465552Abstract: Thermoplastic elastomers are disclosed which are prepared by; (I) mixing, (A) a thermoplastic resin comprising more than 50 percent by volume of a polyamide or a polyester resin, (B) a silicone base comprising; (B′) 100 parts by weight of a diorganopolysiloxane gum having a plasticity of at least 30 and having an average of at least 2 alkenyl groups per molecule and (B″) 5 to 200 parts by weight of a reinforcing filler, wherein the weight ratio of said silicone base to said polyamide or polyester resin is from 35:65 to 85:15, (C) a compatibilizer, (D) a radical initiator, present in an amount sufficient to cure said diorganopolysiloxane gum, and optionally (E) a stabilizer, (II) dynamically vulcanizing said diorganopolysiloxanes gum, wherein at least one property of the thermoplastic elastomer selected from tensile strength or elongation is at least 25% greater than the respective property for a corresponding simple blend wherein said diorganopolysiloxane is not cured and said thermoplaType: GrantFiled: May 1, 2001Date of Patent: October 15, 2002Assignee: Dow Corning CorporationInventors: Igor Chorvath, Frances Marie Fournier, Christopher James Julien, Michael Kang-Jen Lee, Dawei Li, Jun Liao, Robert Leo Oldinski, Richard Leroy Rabe, David Joseph Romenesko, Thomas John Tangney, Yongjun Lee, Koji Nakanishi
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Patent number: 6420480Abstract: Polymer latices are provided that are useful as release coatings for pressure-sensitive adhesive (PSA) coated paper and tapes. With the ever-present environmental concern to eliminate organic solvents, the use of 100% solids and water-based release coatings is becoming more desirable. The latices of the present invention are waterborne, which is an advantage over the more conventional release coating compositions that are usually comprised of solvent-based polymers, and possess good and stable release characteristics.Type: GrantFiled: May 5, 2000Date of Patent: July 16, 2002Assignee: 3M Innovative Properties CompanyInventor: Eser Ozdeger
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Patent number: 6417293Abstract: The present invention, therefore, relates to a method for preparing a thermoplastic elastomer, said method comprising: (I) mixing (A) a thermoplastic resin comprising more than 50 percent by volume of a polyester resin other than poly(butylene terephthalate), said thermoplastic resin having a softening point of 23° C. to 300° C., (B) a silicone elastomer comprising (B′) 100 parts by weight of a diorganopolysiloxane gum having a plasticity of at least 30 and having an average of at least 2 alkenyl groups in its molecule and, optionally, (B″) up to 200 parts by weight of a reinforcing filler, the weight ratio of said silicone elastomer (B) to said thermoplastic resin (A) being greater than 35:65 to 85:15, (C) 0.Type: GrantFiled: December 4, 2000Date of Patent: July 9, 2002Assignee: Dow Corning CorporationInventors: Igor Chorvath, Craig Steven Gross, Kenneth Gerard Gruszynski, Michael Kang-Jen Lee, Jun Liao, Koji Nakanishi, Richard Leroy Rabe, David Joseph Romenesko
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Patent number: 6416558Abstract: A water based fiber treatment agent and fiber treatment method impart to treated fibers a perfect smoothness, lubricity, reduced tackiness, and pleasant tactile sensations. The water based fiber treatment agent contains a silicone oil emulsion of crosslinked silicone particles with an average diameter of 0.01 to 100 &mgr;m which are in silicone oil drops having an average diameter of 0.05 to 500 &mgr;m, and then the silicone oil drops are dispersed in water. The diameter of the crosslinked silicone particles is smaller than the diameter of the silicone oil drops.Type: GrantFiled: May 8, 2000Date of Patent: July 9, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Isao Ona, Hiroki Ishikawa, Tsutomu Naganawa, Kazuo Kobayashi, Yoshitsugu Morita