Abstract: The deleterious generation of hydrogen in optical fiber cables with cured silicone resin coatings is reduced by treating such optical fibers with one or more type of olefinic hydrocarbon to convert --Si--H groups remaining after curing to --Si--R groups where R is an alkyl group having the same number of carbons as the one or more type of olefinic hydrocarbon. The resulting optical fiber cable, having a light transmissive core surrounded by one or more glass cladding layers, is coated by a cured, silicone polymer having few, if any, residual --Si--H groups.

Abstract: A fast curing, addition-curable silicone composition curable to form an adhesive having good physical properties and improved lap shear adhesive properties, comprising (A) a vinyl-containing polydiorganosiloxane composition, (B) a hydrogen-terminated polysiloxane in an amount sufficient to provide an adhesion-promoting molar ratio of silicon-bonded hydrogen atoms in (B) to olefinically unsaturated radicals in (A); (C) a catalytic amount of a platinum-containing hydrosilation catalyst; (D) an effective amount of an adhesion promoter selected from the group consisting of (i) bis[3-(trimethoxysilyl)alkyl]fumarates; (ii) bis[3-(trimethoxysilyl)alkyl]maleates; (iii) allyl-[3-(trimethoxysilyl)alkyl]maleates; (iv) allyl-[3-(trimethoxysilyl)alkyl]fumarates; and (v) N-[3-(trimethoxysilyl)alkyl]maleimides, wherein R.sup.2, R.sup.3, and R.sup.

Abstract: There is provided a composition having interpenetrating matrices comprising (a) a first polymer network characterized by nodes interconnected by fibrils and (b) a second polymer network comprising diorganosiloxy units. In another aspect, there are provided compositions comprising an interpenetrating polymer network of polytetrafluoroethylene and polydiorganosiloxane. Methods for making the foregoing compositions are also provided.

Abstract: There is provided a composition having interpenetrating matrices comprising (a) a first polymer network characterized by nodes interconnected by fibrils and (b) a second polymer network comprising diorganosiloxy units. In another aspect, there are provided compositions comprising an interpenetrating polymer network of polytetrafluoroethylene and polydiorganosiloxane. Methods for making the foregoing compositions are also provided.

Abstract: There is provided a process for preparing amidosilane and amidosiloxanes comprising reacting (1) an Si--H containing compound with (2) an organic amide in the presence of (3) a precious metal containing catalyst.

Abstract: The present invention relates to an alkoxy-functional one-component RTV silicone rubber composition having therein novel scavenger compounds. The novel scavenger compounds comprise multi-amine functional silanes and amine functional siloxanes which can be either pure scavengers or integrated cross-linker, scavengers.

Abstract: The present case relates in one instance to novel amine-functional alkoxy silanes. These novel amine-functional alkoxy silanes are particularly useful as adhesion promoters in one-component alkoxy-functional low modulus, fast-curing, shelf stable RTV systems.

Abstract: A self-bonding additive for a dimedone functional one-component RTV in which the self-bonding agent is a dialkoxydisilylether functional silane.

Abstract: A process for preparing silyl maleates, fumarates, succinates and phthalates comprising reacting an olefinic containing maleates, fumarates, succinates or phthalates with hydrogenotrichlorosilane in the presence of the platinum catalyst and then reacting the product thereof with methanol wherein the methanol is added slowly over a period of at least 6 hours to the intermediate product such that it is introduced beneath and into the liquid layer of intermediate product where most of the HCl that is formed by the reaction is removed by azeotroping it out with the methanol and water along with the HCl dissolved therein and removing the azeotrope as it being formed.

Abstract: A self-bonding room temperature vulcanizable silicone rubber composition comprising a silanol-terminated diorganopolysiloxane base polymer, a filler, a crosslinking agent selected from carboxyl functional silanes and hydrocarbonoxy functional silanes, a curing catalyst and as the self-bonding additive a silyl maleate or a silyl fumarate or a silyl succinate. In place of the foregoing silane self-bonding additives there may be utilized as a self-bonding additive, a maleate functional polysiloxane, a fumarate functional polysiloxane or a succinate functional polysiloxane.

Abstract: An acetamide compound of the formula, ##STR1## where R, R.sup.1, R.sup.2, R.sup.4 are monovalent hydrocarbon radicals, and R.sup.3 is a divalent hydrocarbon radical.

Abstract: Alkoxysilyl ethers of 1,3-dicarbonyl cyclic compounds, such as methoxy tris-5,5-dimethyl-cyclohexen-2-one-3-yloxy silane can be made by effecting reaction in the presence of an acid acceptor between an alkanol, a halosilane and a 1,3-dicarbonyl cyclic organic compound, for example, 5,5-dimethyl-1,3-cyclohexane dione. The alkoxysilyl ethers are useful as vulcanizing agents for silanol terminated polydiorganosiloxanes.

Abstract: Alkoxy substituted 1,3-dicarbonyl silyl ethers have been found to produce moisture curable organopolysiloxane compositions having optimum cure characteristics when such silyl ethers are utilized with silanol containing organopolysiloxanes. The moisture curable organopolysiloxane compositions can be used as adhesives, sealants and caulking compounds.

Abstract: A silicone compound of the formula, ##STR1## where R, R.sup.1, R.sup.2 and R.sup.6 are hydrocarbon radicals, B is selected from nitrogen, oxygen and sulfur, D is selected from a divalent hydrocarbon radical or oxygen, G is selected from various nitrogen radicals, and a, n, t, c and v are whole numbers. The above compound is eminently useful as a flocculent for colloidal biological wastes, as well as being useful as a glass sizing agent.

Abstract: A method is provided for making silarylenesilanediol. An aqueous mixture of a dialkoxy silarylene and a water miscible organic solvent, such as acetone, is refluxed. Water is combined with the resulting mixture to effect the separation of silarylenesilanediol which can be used to make polysilarylenesiloxanes.