Abstract: An epoxy group-bearing organopolysiloxane or organosilane is prepared by effecting addition reaction between an organohydropolysiloxane or organohydrosilane and an alkenyl group-bearing epoxy compound in the presence of an addition reaction catalyst. A cyano group-bearing compound is co-present in the reaction system. The end organopolysiloxane or organosilane having a stabilized viscosity is obtained while avoiding gelation or thickening during reaction.

Abstract: Fluoroalkyl organosilicon compounds are prepared by reacting fluoroolefins with organosilicon compounds that contain at least one H-Si group, in the presence of a Pt(0) complex catalyst. Further, fluoroalkylalkoxy organosilicon compounds are prepared by esterifying fluoroalkyl organosilicon compounds. The process proceeds uniformly under mild conditions with high yields and selectivities.

Abstract: Hydrosilylation reaction curable organosiloxane compositions containing a scavenger for radicals that participate in the free radical polymerization of styrene monomers, which yield upon cure a silicone elastomers having extended moldlife.

Abstract: Linear organopolysiloxanes containing alpha, omega terminal Si bonded omega-alkenyl groups or alpha, omega Si bonded H are prepared via hydrosilylation.

Abstract: A method for manufacturing an organic solvent-soluble hydrogenated octasilsesquioxane-vinyl group-containing compound copolymer comprising reacting 1 mol of (A) a hydrogenated octasilsesquioxane described by formula I with 0.2 to less than 3 mol of (B) a divinyl group-containing compound described by formula (2) CH2═CH—L—CH═CH2   Formula 2 where L is selected from the group consisting of (a) a divalent hydrocarbon group comprising 3 to 10 carbon atoms and (b) —(SiR2O)m—SiR2—, where each R is independently selected from the group consisting of alkyls comprising 1 to 6 carbon atoms and aryls comprising 6 to 9 carbon atoms and 1≦m≦10; in the presence of a hydrosilylation catalyst.

Abstract: Curable organopolysiloxane compositions comprising (D) a platinum catalyst selected from the class consisting of where R2 is an unsubstituted or substituted diene bonded to platinum via at least one &pgr; bond, having an unbranched or branched chain of from 4 to 12 carbon atoms or a ring of from 6 to 18 carbon atoms, R3 are identical or different and are a hydrogen atom, halogen atom or a monovalent, unsubstituted or halogen- or cyano-substituted hydrocarbon radical having from 1 to 24 carbon atoms, R4 are identical or different bivalent, unsubstituted or substituted hydrocarbon radicals having from 1 to 24 carbon atoms, R5 are identical or different bivalent, unsubstituted or substituted hydrocarbon radicals having from 1 to 12 carbon atoms, silane radicals or siloxane radicals, R6 are identical or different and are a hydrogen atom or a monovalent hydrocarbon radical having from 1 to 20 carbon atoms, e is an integer greater than or equal to 1, and f is 0 or 1.

Abstract: A novel moisture curable polymer combination comprising, a member selected from the group consisting of a polydiolefin polymer containing olefinic unsaturation in either the main polymer backbone or in pendent side chains; and a loop polymer having a polymeric backbone and a plurality of olefinic groups which have been converted to closed loops by reaction with difunctional organic compounds reactive with said olefinic groups, said olefinic groups from which the loops are formed may either be present within the backbone and/or pendent from the polymeric backbone; and a silicon cross-linking compound containing at least one easily hydrolyzed substituent.

Abstract: A thixotropic silicone rubber composition comprising (A) an organopolysiloxane having on the average at least two alkenyl groups in a molecule and a degree of polymerization of up to 1,200, (B) a liquid organohydrogenpolysiloxane having at least two hydrogen atoms each attached to a silicon atom, (C) aluminum hydroxide, (D) an addition reaction catalyst, (E) a thixotropic agent, and optionally (F) a tackifier cures at room temperature or elevated temperature into a silicone rubber having high strength and electrical insulating properties sufficient to serve as a high-voltage electrical insulator. The composition is so thixotropic that it may be used in repairing chipped portions of insulators.

Abstract: The invention provides a method of producing a reactive silicon group-containing polyether oligomer which comprises reacting (a) a polyether oligomer having main chain of a polyether and, in each molecule, at least one unsaturated group represented by the general formula (1): H2C═C(R1)—R2—O—  (1) (in the formula, R1 is a hydrocarbon group containing not more than 10 carbon atoms and R2 is a divalent organic group containing 1 to 20 carbon atoms and one or more species selected from the group consisting of hydrogen, oxygen and nitrogen atoms as a constituent atom) or the general formula (2): HC(R1)═CH—R2—O—  (2) on a side chain or at a terminus with (b) a reactive silicon group-containing compound in the presence of (c) a group VIII transition metal catalyst to introduce the reactive silicon group into said polyether oligomer (a), wherein the reaction is carried out in the presence of (d) a sulfur compound.

Abstract: Three-dimensional silicone elastomers having polyether and higher alkyl functionality in their molecules form networks of crosslinked linear siloxanes with polyether and olefin containing repeating units, and these silicone elastomers can be used as emulsifiers for making O/O and three-phase aqueous emulsions. One of the oil phases is a silicone oil, while the other oil phase is an organic oil such as mineral oil or castor oil. These emulsions of two and three mutually insoluble liquids are useful in personal and health care applications.

Abstract: There is provided (i) a resin additive able to impart superior thermal shock resistance even in the case of resins that have absorbed moisture, (ii) a curable resin composition capable of forming a cured resin that has superior thermal shock resistance even after absorbing moisture, and (iii) a cured resin that has superior thermal shock resistance even after absorbing moisture. The resin additive consists of a powder with a mean particle size of 0.1 to 100 &mgr;m of silicone rubber. It has a moisture absorption rate of 0.20 weight percent or less after being treated for 20 hours at a temperature of about 121° C., a pressure of two atmospheres, and a relative humidity of 100 percent. The curable resin composition contains the resin additive, and the cured resin is formed by curing the curable resin composition.

Abstract: A novel acrylic functional organopolysiloxane is obtained by effecting addition reaction between (A) an organopolysiloxane having acrylic functional groups and (B) an organopolysiloxane having a hydride group at either end to induce partial crosslinking. The acrylic functional organopolysiloxane forms a cured film ensuring light release and good retention of adhesion.

Abstract: The invention concerns polysiloxane compounds which contain the following components: 1. organopolysiloxane with at least two aliphatic double bonds in the molecule; 2 organopolysiloxane with at least two Si—H groups in the molecule; 3. noble metal catalyst; and 4. hydrophilic modifier of general formula (I) [H2C═CH—A1—(A2)m—X]nB (I), in which A1, A2, X, B, m and n have the meanings given in claim 1. The polysiloxane compounds are stable during storage and are used as dental casting compounds.

Abstract: An adhesive silicone sheet that enroute to its complete cure is inhibited from releasing low-viscosity silicone oil, that provides excellent bond between a semiconductor chip and the corresponding chip attachment site, and that as a consequence of these features supports the fabrication of highly reliable semiconductor devices, The adhesive silicone sheet is produced by a very efficient method which yields an adhesive silicone sheet having particularly good adhesiveness. The siliocone adhesive sheet is used to produce highly reliable semiconductor devices in which the semiconductor chip has been bonded to its attachment site using the subject adhesive silicone sheet.

Abstract: A method for producing a saturated siloxane polymer is provided. In one aspect, the method comprises hydrogenating an aromatic siloxane monomer by contacting it with hydrogen in a temperature of 100° C. to 200° C. and a hydrogen pressure of 1000 to 2000 psi for 1 to 6 hours in the presence of a hydrogenation catalyst to produce a hydrogenated siloxane monomer, and anionically polymerizing the hydrogenated siloxane monomer.

Abstract: An addition-curing organopolysiloxane composition which has excellent shelf stability around room temperature, rapidly cures by moderate ultraviolet irradiation or heating, and is suitable for use as the one solution type. A reaction inhibitor is added to the composition comprising an alkenylated organopolysiloxane, an organohydrogenpolysiloxane, and a platinum catalyst. The inhibitor is a thiophene compound, an isocyanide compound, a cyclic thioether compound, a cyclic azo ether compound, an imino compound, or a polymer which has, in the molecule, functional groups each containing one or more sulfur, nitrogen, or phosphorus atoms and has an average molecular weight of 1,000 to 200,000, and which is capable of forming a complex with a platinum atom.

Abstract: This invention relates to novel suspensions containing (a) 30 to 95 wt. % of water, (b) 70 to 5 wt. % of at least one silane or siloxane having at least two groups corresponding to formula (I) —(CH2)mSiRnX3-n  (I)  wherein R denotes C1-C18 alkyl and/or C6-C20 aryl, X denotes OH, C1-C4 alkoxy, C6-C20 aryloxy, C1-C6 acyloxy and/or hydrogen, m is 1 to 6, and n is 0 to 2, (c) 0.1 to 30 wt. % of at least one emulsifier, and (d) 0 to 20 wt. % of one or more additives and/or auxiliary substances, with the proviso that the sum of components (a) to (d) totals 100 wt. %. The present invention further relates to the preparation and use of such suspensions.

Abstract: A precursor composition includes (1) at least one crosslinking compound represented by the formula: wherein: u and x are independently selected positive integers, v and w are independently selected integers greater than or equal to zero, R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from the group consisting of alkyl, aryl, alkylaryl, haloalkyl, haloaryl and mixtures thereof; A and E are independently selected from the group consisting of O, an aliphatic bridge, an aryl bridge and mixtures thereof; and R9 and R10 are unsubstituted or substituted vinyl or ethynyl groups, (2) at least one organosilicon compound containing at least two silicon hydride moieties per molecule, and (3) a hydrosilation catalyst, A cross-linked polymer is formed by reacting the crosslinking compound of formula I with the organosilicon compound via a hydrosilation reaction. A thermoset polymer is formed by thermally curing the crosslinked polymer.

Abstract: A curable silicon composition, comprising (A) 100 parts by weight of an organopolysiloxane containing silicon-bonded aryl groups and at least two alkenyl groups per molecule, and having a viscosity of from 0.01 to 1,000 Pa.s at 25° C., wherein the aryl groups comprise from 1 to 40 mole % of the total silicon-bonded organic groups in the organopolysiloxane; (B) an organopolysiloxane having a viscosity of from 0.001 to 10 Pa.s at 25° C. and containing at least 2 silicon-bonded hydrogen atoms per molecule, in a quantity sufficient to cure the composition; (C) a platinum catalyst in a quantity sufficient to cure the composition; and (D) 0.00001 to 100 parts by weight of an organopolysiloxane having a viscosity of from 0.01 to 10,000 Pa.s at 25° C.

Abstract: A new composition of matter is a blend of (i) a crosslinked elastomeric silicone polyether and (ii) a crosslinked elastomeric silicone containing alkyl groups having 3-40 carbon atoms. The new composition can be used in preparing water-in-oil emulsions, and clear solutions containing an oil(s) or an oil-soluble active ingredient(s).

Abstract: A three-stage process for the continuous preparation of RTV-1 compositions comprises, in a first step, preparing a raw mixture of &agr;,&ohgr;-dihydroxypolydiorganosiloxane, filler and, if desired, further constituents, in a second step, freeing the raw mixture of gas inclusions under reduced pressure and, if desired, mixing it with further constituents and, in a third step, mixing the degassed raw mixture with a crosslinker, a condensation catalyst and, if desired, additional constituents not yet added in the first and second steps.

Abstract: The synthesis and characterization of novel multi-arm, polyisobutylene-based star-block polymers comprising a plurality of polyisobutylene-containing, diblock arms radiating from a siloxane core are described. The synthesis has been achieved by cationically polymerizing a monomer, such as styrene, and isobutylene to form diblock prearms and then hydrosilating the unsaturation-functionalized polyisobutylene with siloxanes carrying a plurality of Si—H groups via hydrosilation. The resultant star-block polymers may be thermoplastic elastomers characterized as having superior tensile strength and processing properties as compared to linear triblock polymers of similar hard/soft segments.

Abstract: The present invention relates to triorganosiloxy-endblocked poly(methyl(C6-C40alkyl)siloxane)-poly(methyl(aralkyl)siloxane)-poly(methyl(C2-C4alkyl)siloxane) terpolymers. This invention also relates to two different methods of making these terpolymers. The triorganosiloxy-endblocked poly(methyl(C6-C40alkyl)siloxane)-poly(methyl(aralkyl)siloxane)-poly(methyl(C2-C4alkyl)siloxane) terpolymers of this invention are useful as mold release agents in aluminum die cast release agents, rubber lubricants, and as high reflexive index additives for the personal care industry.

Abstract: The invention relates to organopolysiloxanes comprising (meth)acrylate groups, to a process for their preparation and to their use as radiation-curing coating materials.

Abstract: A polymer composition comprises a polymer matrix and a siloxane-containing additive which is substantially incompatible with the polymer matrix, wherein the siloxane of the additive has a hydroxy, alkoxy or epoxy functionality, and a functionality which is capable of bonding with a silicone elastomer-forming composition which is curable by a hydrosilylation reaction. The polymer matrix preferably comprises polyphenylenesulphide, and the additive preferably comprises hydroxy-terminated methylvinyl siloxane. The composition is capable of forming plastics articles to which cured silicone elastomers can adhere.

Abstract: An oligomer of the formula: [R3SiO1/2]m[O1/2Si(R2)O1/2]n[SiO3/2R]o[SiO4/2]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.

Abstract: A polysiloxane-polybutylene copolymer having polybutylene chains grafted onto a polysiloxane backbone which has a variety of properties which render it valuable for applications in personal care.

Abstract: The invention relates to organopolysiloxanes that have amino groups and are solid at room temperature which can reversibly change their states of aggregation on the basis of temperature changes. Preparations containing these organopolysiloxanes are useful in the cleaning, care, and hydrophobicization of surfaces.

Abstract: An organofunctional cocyclic siloxane, i.e., a dialkyl, alkyl carboxyalkyl cocyclic siloxane, is used to prepare copolymeric siloxane fluids, copolymeric siloxane gums, and terpolymeric siloxanes via three polymerization techniques. In one embodiment, the dialkyl, alkyl carboxyalkyl cocyclic siloxane is polymerized using a bulk polymerization technique. In another embodiment, the dialkyl, alkyl carboxyalkyl cocyclic siloxane is polymerized using an emulsion polymerization technique. In an additional embodiment, the dialkyl, alkyl carboxyalkyl cocyclic siloxane is polymerized using a microemulsion polymerization technique. The dialkyl, alkyl carboxyalkyl cocyclic siloxane most preferred is a dimethyl, methyl carboxyalkyl cocyclic siloxane.

Abstract: The present invention provides hydrophilically modified curable silicone dental impression materials comprising an addition curable silicone prepolymer composition and a polymerizable hydrophilic modifier. The addition curable silicone prepolymer in the composition of the present invention comprises blended vinyl terminated organopolysiloxane fluids, an organohydrogen polysiloxane crosslinker, a platinum catalyst, a retarder, filler and optional additives. The cured compositions have a stable hydrophilic nature, excellent mechanical properties, and maximum long-term dimensional stability.

Abstract: In an addition curing type silicone composition comprising (A) an organopolysiloxane having at least two alkenyl groups each attached to a silicon atom in a molecule, (B) an organohydrogenpolysiloxane having at least two hydrogen atoms each attached to a silicon atom in a molecule, and (C) a platinum catalyst, a (meth)acryloxyalkyl-modified organopolysiloxane having a linear or cyclic organopolysiloxane structure and a viscosity of 5-10,000 centipoise at 25° C. is blended as an adhesion promoter for improving the adhesion of the composition to difficultly bondable substrates.

Abstract: Linear or cyclic diorganosiloxane compounds that include at least one nitroaniline function are disclosed. The compounds may be used as organic dyes in cosmetic compositions suitable for dyeing human keratin fibers, especially hair, or for make-up. The dyes may also be used in foods and pharmaceutical compositions and for dyeing natural and synthetic fibers and plastics or inorganic materials. Also disclosed are the use of the compounds in the above-mentioned fields, cosmetic compositions containing such compounds, and a method for directly dyeing keratin fibers.

Abstract: A method for making a hydrocarbon oxysilyl functional polymer, which is important as a modified silicone or silicone-modified polymer, by a hydrosilylation reaction between a hydride (hydrocarbonoxy)silane compound having SiH functional groups and a polymer having olefinic or acetylenic unsaturated groups in the presence of a carboxylic acid and a catalytic amount of platinum or a platinum compound.

Abstract: A polysiloxane composition comprising (A) a polysiloxane having a group represented by the formula (I): ≡Si—OR  (I) wherein, R is a C1 to C18 substituted or unsubstituted monovalent hydrocarbon group or ether bond containing an organic group; and (B) at least 1 ppm of (a) a compound having an N, P, S, Sn, or As component or (b) an acetylene alcohol and a rubber composition containing the same. Specific polysiloxanes (A) contain both formula (I): ≡Si—OR as well as Si—H.

Abstract: Curable organopolysiloxane compositions comprising a platinum catalyst selected from the group consisting of (PR23)2Pt(—C≡C—R3)2  (III), (R22P—R4—PR22)Pt(—C≡C—R3)2  (IV) and H—C≡C—R5—C≡C—[—Pt(PR23)2—C≡C—R5—C≡C—]e—H  (V) where R2, R3, R4, R5 and e are as defined in claim 1.

Abstract: The present invention relates to linear polyether-polysiloxane copolymers of the general formula A(BC)nBA, in which linear polyether and linear polysiloxane units are linked via Si—C bonds, and to a process for their preparation.

Abstract: This invention relates to a radiation curable silicone coating composition comprising an alkoxylated resin-polymer organosilicone network containing radiation curable functionality and a cationic photoinitiator. The radiation curable silicone compositions of this invention are useful as fast curing low and high release coating compositions which are especially suitable for release of pressure sensitive adhesives.

Abstract: Chemicaly stable, perflourinated, linear or cyclic polyorganosiloxanes (POS), and a process for the preparation thereof. Antifoams, agents for lowering surface tension, dirt repellents, antiadhesives, lubricants, oleophobic and/or hydrophobic agents, coatings and other compositions containing the perfluorinated POS are disclosed.

Abstract: A silane or carbosilane dendrimer is modified with bridge moieties and polymer arms attached to the bridges to form hybrid dendrimer-star polymers. The bridge moieties are attached via Si—C bonds to the silane or dendrimer. The bridge has one or more reactive groups to which polymer arms are attached. Selected reactive groups on the bridge may serve as initiator sites for in situ polymerization of the arms. The polymer arms are of the polyether, polysulfide or polyester type. These arms may have functional groups which allow further modification and attachments. For this type of star polymer, the bridge has been found to increase resistance to hydrolysis at the silane- or dendrimer-arm junction. These star polymers are useful e.g. as viscosity modifiers, component in molding resins, water solubilizer for hydrophobic molecules, surfactants and as carriers for drugs, prodrugs and other biological agents.

Abstract: Silicone terpolymers, modified with phenyl or substituted phenyl groups and polyalkyleneoxides, which exhibit refractive indices >1.47 are disclosed. These materials of the present invention when incorporated in formulations for surface treatment improve slip and gloss of the substrates to which they are applied, and are useful in hair care and coatings applications.

Abstract: Silicone rubber parts having a high thermal conductivity and low hardness are obtained by molding and curing a composition comprising (A) 100 parts by weight of an alkenyl-bearing organopolysiloxane having a viscosity of up to about 500,000 centistokes at 25° C., (B) 300-1,200 parts by weight of aluminum oxide powder, (C) 0.05-10 parts by weight of an alkoxysilane of the formula: R1aSi(OR2)(4−a) wherein R1 is a monovalent C6-20 hydrocarbon group, R2 is a C1-6 alkyl group, and a=1, 2 or 3, (D) a platinum group metal catalyst, and (E) an organohydrogenpolysiloxane containing at least two SiH groups in a molecule. The composition is formulated so as to suppress the viscosity increase of a liquid silicone rubber composition due to heavy loading of aluminum oxide.

Abstract: A silicone gel composition, (A) 100 parts by weight of a first polydiorganosiloxane containing an average of at least two silicon-bonded alkenyl groups per molecule and having a viscosity of from 0.2 to 10 Pa·s at 25° C.; (B) at least about 0.5 part by weight of a second polydiorganosiloxane containing an average of at least two silicon-bonded alkenyl groups per molecule, wherein the second polydiorganosiloxane has a viscosity at 25° C. of at least four times the viscosity of the first polydiorganosiloxane at 25° C.; (C) an organohydrogensiloxane having the average formula R7Si(SiOR82H)3 wherein R7 is an alkyl group having 1 to 18 carbon atoms or aryl, R8 is an alkyl group having 1 to 4 carbon atoms, in an amount sufficient to provide from 0.1 to 1.5 silicon-bonded hydrogen atoms per alkenyl group in components (A) and (B) combined; and (D) a hydrosilylation catalyst in an amount sufficient to cure the composition.

Abstract: Elastomeric silicones, especially elastomeric silicone polyethers, are prepared by combining and reacting (A) an ≡Si—H containing polysiloxane, (B) a mono-alkenyl polyether, (C) an active ingredient such as a vitamin, antimicrobial agent, sunburn prevention agent, astringent, or sex hormone, (D) an &agr;,&ohgr;-unsaturated hydrocarbon, (E) a platinum catalyst, and (F) an oil. The reaction of components (A)-(F) is allowed to continue, forming a crosslinked three-dimensional gelled network of the elastomeric silicone polyether containing the active ingredient and the oil. The compositions are useful in personal and health care applications, personal hygiene, and household cleaning applications.

Abstract: The present invention relates to a method of making a silicone polyether comprising (I) reacting a mixture comprising an olefin functional polyether, an organohydrogensiloxane, and a homogeneous transition metal hydrosilylation catalyst, and (II) subjecting the product of (I) to hydrogen gas. The method of this invention reduces the amount of olefinic species present which are precursors to odorous compounds. Thus the method of this invention reduces the amount of odor in the silicone polyether product. These odors are objectionable, particularly in personal care applications.

Abstract: The invention provides a fluorine-containing curable composition comprising (A) a linear perfluoro compound having at least two alkenyl groups in its molecule and a divalent perfluoroalkylene or perfluoropolyether structure in its backbone, (B) a fluorinated organohydrogenpolysiloxane having at least four hydrosilyl groups in its molecule and a divalent perfluoro structure in its backbone, and (C) a platinum catalyst.

Abstract: A silicone copolymer for use in an electrophotographic process is disclosed. This composition includes a specifically-defined heat-stable silicone oil-silicone wax copolymer. The copolymer has a melting point such that it is liquid on the hot fuser roll, but solidifies at room temperature on the printed page. A random silicone copolymer, in the form of a paste or pliable caulk, which is useful for sealing leaks in toner cartridges is also disclosed. Finally, the method for preparing these copolymers is disclosed.

Abstract: A curable composition, comprising a siloxane grafted vinyl polymer as its main component, reacts with an organic silicon compound having silicon-bonded hydrogen atoms in the presence of a hydrosilylation catalyst to form a peelable cured coating film. The siloxane grafted vinyl polymer has two unique grafted siloxane chains represented by the following general formulae (A) and (B): ##STR1## where R.sup.1 is a divalent organic group, R.sup.2 is a monovalent hydrocarbon group which is free of aliphatic bonds, R.sup.3 is a monovalent hydrocarbon group, Y is a monovalent organic group having unsaturated aliphatic bonds, a is 0 or 1, m is an integer between 0 and 20, n is an integer which is I or greater, and p is an integer of 1, 2 or 3.

Abstract: This invention relates to a macromonomer and a method for its preparation. The macromonomer has silicon-bonded hydrogen atoms at one molecular chain terminal, and aliphatically unsaturated silicon-bonded organic groups at the other molecular chain terminal. This invention further related to a method of forming a hyperbranched polymer by polymerizing the macromonomer with a group VIII metal catalyst. The hyperbranched polymers can be used as surfactants, gelling agents, drug delivery systems, and polymeric absorbents.

Abstract: A hydrosilylation catalyst is provided wherein a platinum catalyst is enclosed in a heat-fusible compound having a melting point of 40-200.degree. C. and containing an aliphatic unsaturated bond, carbonyl, carboxyl or thioether radical in a molecule. The catalyst is blended in organo-polysiloxane to form a silicone composition having both shelf stability and fast-curing capability.

Abstract: Alkoxy silane oligomers which have a non-hydrolyzable carbon bridged bond to another silane functionality are taught herein, as well as their manufacture and utility.