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Dow Corning Limited Patents
Assignee:
Dow Corning Limited
Address:
Barry, GB
No. of patents:
100
Patents:


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Patent Number Title Of Patent Date Issued
7754800 Organosiloxane compositions July 13, 2010
A moisture curable composition capable of cure to an elastomeric body comprising (a) a diluted polymer comprising (i) a silicon containing polymer of the formula X-A-X.sup.1 where X and X.sup.1 are independently selected from silyl groups which contain one or more condensable subst
7429638 High refractive index polysiloxanes and their preparation September 30, 2008
A polysiloxane having a refractive index of about 1.56 measured at light wavelength 633 nm, characterized in that the polysiloxane includes siloxane T units of the formula ##STR00001## where A represents an alkylene group having 1 to 4 carbon atoms: n=0 or 1; m is at least 1; and Ar
7323429 Clay composition January 29, 2008
A method for pacifying the spent bed material resulting from the synthesis of organohalosilanes and halosilanes by mixing clay with spent bed material. Clay compositions containing at least 10 weight % of clay and spent bed material, as well as ceramic compositions containing spent bed
7208619 Hydrosilylation process April 24, 2007
A silane or siloxane containing at least one organic group is prepared by a hydrosilylation reaction between a silane or siloxane (A) containing at least one Si--H group and an allyl compound (B) in the presence of a noble metal catalyst. The silane or siloxane (A) and the allyl compound
6806339 Silicone release coating compositions October 19, 2004
A branched siloxane contains at least three aliphatically unsaturated hydrocarbon groups, is terminated by units of the formula R.sup.a R.sup.b.sub.2 SiO.sub.1/2 and otherwise consists of: i) one or more units of the formula(SiO.sub.4/2); and ii) from 15 to 995 units of the formula R.s
6709752 Coating compositions and textile fabrics coated therewith March 23, 2004
An elastomer-forming coating composition for textile fabrics comprises a first, second and third organopolysiloxane having aliphatically unsaturated substituents, an organosilicon crosslinker having at least 3 silicon-bonded hydrogen atoms, a catalyst and a reinforcing filler. First
6448196 Polymerization catalyst and polymerization process September 10, 2002
Siloxanes are polymerized by equilibration, condensation and/or ring-opening polymerization using a phosphazene base catalyst. A linear phosphazene base catalyst of the general formula ##STR1##wherein R denotes a C.sub.1-10 hydrocarbon or wherein two R groups on one N atom form with
6387451 Curable coating compositions May 14, 2002
A curable coating composition which exhibits improved cure and adhesion to various substrates comprises a composition curable by a hydrosilylation reaction and includes a silicone resin, a hydrosilylation reaction inhibitor and an adhesion promoting additive which comprises an organo
6353075 Polymerization of siloxanes March 5, 2002
A polymerization process comprising mixing a siloxane having silicon-bonded groups R' and a cyclic or linear siloxane having no silicon-bonded groups R' with a phosphazene base catalyst in the presence of water and allowing the siloxane having silicon-bonded groups R' to condense and the
6350891 Method for making a catalyst composition February 26, 2002
Phosphonitrile halides are prepared employing the use of disilazanes. The resultant products may be further reacted with cyclosiloxanes to form siloxane containing phosphonitrile halides.
6346593 Polymerization of siloxanes February 12, 2002
A polymerization process comprising mixing siloxane polymers with organosilicon compounds having at least one silicon-bonded group R.sup.N, which is a substituent comprising at least one amine group, and with a phosphazene base catalyst and allowing the siloxanes and organosilicon co
6284859 Polymerization of siloxanes September 4, 2001
A polymerization process comprising mixing siloxanes having silicon-bonded groups R' with ionic phosphazene base catalysts and allowing condensation via reaction of Si--R' groups with the formation of a Si--O--Si linkage, R' denoting a hydroxyl group or a hydrocarbonoxy group having up t
6265086 Electroless metal deposition on silyl hydride functional resin July 24, 2001
A method for selective electroless metal deposition on a substrate. The method comprises applying a patterned coating comprising a silyl hydride functional resin onto a substrate. An electroless plating solution comprising a metal ion is then applied onto the silyl hydride functional
6221993 Continuous process for producing a silicone polymer April 24, 2001
A continuous process for producing a silicone polymer comprises the sequential steps of (i) polymerisation of a linear silanol group containing siloxane by condensation polymerisation, or of a cyclosiloxane by ring opening polymerisation, or of a mixture of said linear and cyclosilox
6184330 Continuous process for producing a silicone polymer February 6, 2001
A continuous process for producing a silicone polymer comprises the sequential steps of (i) polymerisation of a linear silanol group containing siloxane by condensation polymerisation, or of a cyclosiloxane by ring opening polymerisation, or of a mixture of said linear and cyclosilox
6160147 Silylating agent December 12, 2000
A compound of formula (I) is disclosed for use as a silylating agent: ##STR1## wherein each R.sup.1 is independently a hydrogen atom, an alkyl group or an alkenyl group with at least one R.sup.1 being a hydrogen atom or alkenyl group, and R.sup.2 is a hydrogen atom or an alkyl group.
6136994 Method for preparing hydrophobic clay October 24, 2000
A method for the preparation of a hydrophobic clay by contacting an aqueous suspension of the clay with an organosilane of formula R.sup.1.sub.a SiX.sub.4-a or an organosiloxane comprising units of formula R.sup.2.sub.n SiO.sub.(4-n)/2 in the presence of an acid and a water-miscible solv
6136940 Silacyclobutane compounds, methods of preparing same, and polymers formed therefrom October 24, 2000
A silacyclobutane compound having the formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently chloro, triorganosiloxy, organooxy, triorganosilyl, or a monovalent hydrocarbon group; R.sup.3 is a monovalent hydrocarbon group free of conjugated aliphatic unsaturation, triorg
6136215 Fiber treatment composition containing amine-, polyol-, amide-functional siloxanes October 24, 2000
A fiber treatment composition is disclosed. The composition contains siloxanes having amine-, polyol, and amide-functionalities. The composition provides good hand, resistance to yellowing, and hydrophilicity to the fibers. The composition is preferably formulated as an aqueous emuls
6124419 Release modifier compositions September 26, 2000
This invention relates to a release modifier composition comprising an alkenyl functional polyorganosiloxane and a branched olefin. This invention further relates to the use of the release modifier composition in silicone release coating emulsions and solventless silicone release coa
6111153 Process for manufacturing methyl chloride August 29, 2000
A process for manufacturing methyl chloride. The process consists essentially of contacting hydrogen chloride with at least a stoichiometric amount of methanol split into at least two portions with a first portion comprising about 60 to 95 percent of the methanol added to the process in
6087461 Process for making silyl endblocked organic polymers July 11, 2000
A process for making silyl endblocked organic polymers of the formula R.sup.1.sub.3 SiM is disclosed which comprises contacting under anhydrous conditions M' monomers and/or oligomers of M' with a silyl cation R.sup.1.sub.3 Si.sup.+ devoid of any siloxane bonds wherein each R.sup.1
6054548 Process for producing a silicone polymer April 25, 2000
A process for producing a silicone polymer having a volatile material content of less than 1% by weight, preferably less than 0.1% by weight, comprises the sequential steps of (i) producing an unstripped silicone polymer by polymerisation of a linear silanol group containing siloxane by
6037279 Coated textile fabrics March 14, 2000
A coated textile fabric that has utility for fabricating automobile airbags. A surface of the textile fabric is coated with first and second layers of polyorganosiloxane-based elastomeric material, the first layer being disposed between the textile surface and the second layer. The p
6001944 Curable composition December 14, 1999
A curable composition comprises a siloxane polymer, filler and a curing agent which is capable of effecting the cure when heated, wherein the curing agent comprises bis(2,4-difluorobenzoyl) peroxide or bis(2,6-difluorobenzoyl) peroxide. The composition is curable to a elastomeric con
6001928 Polymerization of cyclosiloxanes in the presence of fillers December 14, 1999
A process for which making silicone-filler mixtures which comprises effecting the ring-opening polymerisation of a cyclosiloxane with a phosphazene base in the presence of a filler and of water, preferably from 0.5 mil to 10 mols of water per mol of phosphazene base. The filler is pr
5776245 Method for hydrophobing gypsum July 7, 1998
A method for preparing an aqueous gypsum mixture having hydrophobic additive substantially uniformly dispersed therein, which method comprises admixing in water gypsum, a silane of the general formula (RO).sub.3 SiR' or the general formula (RO).sub.2 SiRR' and non-emulsified polysiloxane
5744529 Curable compositions April 28, 1998
A curable composition comprises a polysiloxane additive having at least one unit R.sub.a SiO.sub.(4-a)/2 and at least one unit R.sub.b R.sup.1 SiO.sub.(3-b)/2 wherein R is a C.sub.1-12 hydrocarbon, R.sup.1 is --(CH.sub.2).sub.n (OR.sup.2).sub.m X where R.sup.2 is C.sub.2-3 alkylene,
5547604 Liquid crystal siloxanes August 20, 1996
Siloxane compounds having a smectic liquid crystal phase and the general formula ##STR1## wherein each R=alkyl, alkenyl or aryl, Q represents a monovalent group, for example alkyl, --(CH.sub.2).sub.n OM', a chiral organic group, a dye group, a non-linear optic group or the group
5498368 Liquid crystal devices March 12, 1996
A liquid crystal device wherein the liquid crystal material is a siloxane-containing compound characterised by the the general formula ##STR1## wherein R is a C.sub.1-10 alkyl or ##STR2## each R' is a C.sub.1-4 alkyl, T is ##STR3## X is an alkyl or halogen-substituted al
5468828 Silicone release composition November 21, 1995
A release modifier for silicone release compositions comprising a MQ resin consisting essentially of units of the formulaewherein R denotes a monovalent hydrocarbon group having up to 3 carbon atoms, a hydrogen atom, an alkenyl group of the formula --R'CH.dbd.CH.sub.2 or an oxyalkenyl gr
5468816 Silicone release compositions November 21, 1995
A release modifier which comprises (i) a MQ resin consisting essentially of units of the formulae SiO.sub.2 and R.sub.3 SiO.sub.1/2 wherein R denotes a monovalent hydrocarbon group having up to 3 carbon atoms, a hydrogen atom, a c.sub.2-5 alkenyl group of the formula --R'CH.dbd.CH.sub.2,
5455697 Liquid crystal device October 3, 1995
A liquid crystal device wherein the liquid crystal material exhibits a smectic phase and cromprises at least one siloxane compound having the general formula ##STR1## in which R=alkyl, alkenyl or aryl, Q represents a monovalent group, for example alkyl --(CH.sub.2).sub.n OM', a c
5418204 Process for loading ceramic monolith with catalyst May 23, 1995
A process of loading a ceramic monolithic catalyst support with a heterogeneous water soluble catalyst comprises making a slurry of the catalyst in a mixture of from 2 to 50% by weight of water and from 98 to 50% of a liquid organic carrier, applying the slurry onto the surface of th
5397824 Organosilicon compounds and their use in film-forming compositions March 14, 1995
Novel neopentasiloxane compounds of the general formula Si[OSiR.sub.2 Q].sub.4 wherein R denotes a monovalent hydrocarbon or halohydrocarbon group and Q denotes a group R or a group comprising a block of at least two oxyalkylene units and having a terminal group containing a reactive
5391675 Process for the preparation of organopolysiloxanes February 21, 1995
A process for the preparation of amino-substituted organopolysiloxanes which comprises the steps of mixing a catalyst comprising both (i) at least one compound selected from barium hydroxide and strontium hydroxide and (ii) at least one compound selected from borates and phosphates of
5359112 Hydrosilylation process October 25, 1994
Process for producing organosilicon compounds having silicon-bonded substituents, e.g. hexenyl, containing terminal olefinic unsaturation. Process comprises reacting .tbd.SiH with a diene in the presence of a mixture, and/or a reaction product, of a compound or complex of platinum an
5358975 Organosiloxane elastomeric foams October 25, 1994
Method for the production of organosiloxane elastomeric foam comprising mixing together (A) a polydiorganosiloxane having at least two silicon-bonded alkenyl groups, (B) an organohydrogensiloxane, (C) a platinum catalyst, (D) an .alpha., w-diol of formula HOROH wherein R represents a
5344906 Process for producing organosiloxanes September 6, 1994
Process for the production of condensation products or organosilicon compounds having at least one silicon-bonded hydroxyl group. The process comprises contacting the organosilicon compound with a quaternary ammonium borate, -phosphate, -carbonate or -silicate. May be employed for exampl
5331020 Organosilicon compounds and compositions containing them July 19, 1994
Organosilicon compounds with a siloxane portion and groups of the general formula --OR'OCH.dbd.CHR" (i) linked via an Si--O--C bond, wherein R' is a divalent hydrocarbon radical or a group --R.degree.--(OR.degree.).sub.n --, wherein R.degree. is alkylene and n is from 1 to 12, R" is H or
5316692 Silicone containing hard surface scouring cleansers May 31, 1994
A cleanser composition for hard surfaces, for example baths, tiles, laminated surfaces and the like, which contains at least one surfactant, an abrasive substance, water and an organosiloxane component which comprises both (A) a dimethylsiloxane having from 2 to 10 silicon atoms and
5310597 Film-forming copolymers and their use in water vapor permeable coatings May 10, 1994
A film-forming copolymer is formed by copolymerising 100 parts of a curable polyurethane resin and 10 to 100 parts of an organosilicon compound, consisting essentially of SiO.sub.2, R.sub.3 SiO.sub.1/2 and R'R.sub.2 SiO.sub.1/2 units, the ratio of monovalent units to tetravalent units
5270424 Hydrosilylation process December 14, 1993
Process for preparing organosilicon compounds having silicon-bonded groups containing olefinic unsaturation by reaction of a silicon compound having SiH groups with a diene having at least 5 carbon atoms and in which the unsaturation is located at the terminal carbon atoms. The process i
5270423 Organosilicon compounds and compositions containing them December 14, 1993
Organosilicon compounds with a siloxane portion and groups of the general formula --OR'OCH.dbd.CHR'' (i) linked via an Si--O--C bond, wherein R' is a divalent hydrocarbon radical or a group --R.degree.--(OR.degree.).sub.n --, wherein R.degree. is alkylene and n is from 1 to 12, R'' is H
5266403 Film-forming copolymers and their use in water vapour permeable coatings November 30, 1993
A film-forming copolymer is formed by copolymerizing 100 parts of a curable polyurethane resin and 10 to 100 parts of an organosilicon compound, consisting essentially of SiO.sub.2 R.sub.3 SiO.sub.1/2 and R'R.sub.2 SiO.sub.1/2 units the ratio of monovalent units to tetravalent units
5256755 Process for the production of organosilicon compounds October 26, 1993
Process for the production of organosiloxanes comprising contacting (A) at least one organosilicon compound having in the molecule at least one silanol group, the organic substituents being selected from monovalent hydrocarbon groups having from 1 to 14 carbon atoms and monovalent su
5247039 Method of making silethynyl polymers September 21, 1993
A method of making silethynyl polymers having units of the general formula--(R.sub.2 SiC.tbd.C)-- wherein each R independently denotes a hydrogen atom, an alkyl, aryl or alkenyl group or a substituted alkyl, aryl or alkenyl group having up to 18 carbon atoms comprises adding a lithiu
5246996 Organosilicon compounds and their use in film-forming compositions September 21, 1993
Novel neopentasiloxane compounds of the general formula Si[OSiR.sub.2 Q].sub.4 wherein R denotes a monovalent hydrocarbon or halohydrocarbon group and Q denotes a group R or a group comprising a block of at least two oxyalkylene units and having a terminal group containing a reactive
5216106 Method of making silethynyl polymers June 1, 1993
A method of making silethynyl polymers having units of the general formula --(R.sub.2 SiC.tbd.C)-- wherein each R independently denotes a hydrogen atom, an alkyl, aryl or alkenyl group or a substituted alkyl, aryl or alkenyl group having up to 18 carbon atoms comprises adding a lithium s
5175325 Platinum complexes and use thereof December 29, 1992
Method for preparing a platinum-organosiloxane complex which comprises reacting a platinous halide with an organo-siloxane having from 2 to 4 silicon-bonded organic groups containing terminal olefinic unsaturation, the reaction being carried out in the presence of a polar organic liquid,
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