Abstract: A hydrosilation process where a silicon hydride is reacted with an unsaturated reactant in the presence of a platinum catalyst and an accelerator selected from a group consisting of ene-yne unsaturated compounds. The accelerators are especially useful for facilitating the hydrosilation of unsaturated reactants where the unsaturation is in the internal portion of the reactant's structure, for example, as in cyclopentene and cyclohexene.

Abstract: 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 alkyl are useful in radiation curable compositions, in which they are mixed with an initiator. The compositions are particularly useful in UV radiation curable relase coatings.

Abstract: The present invention is a process for the preparation of (piperazinylorgano)silanes. The process involves the contact of an (aminoorgano)silane with piperazine or an organopiperazine, in the presence of palladium black as a catalyst. The process is run at a temperature within a range of about 50.degree. C. to 300.degree. C. in a standard low-pressure type reactor.

Abstract: 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 alkyl are useful in radiation curable compositions, in which they are mixed with an initiator. The compositions are particularly useful in UV radiation curable relase coatings.

Abstract: The present invention is a method for separating silyl ketene acetals from carbonyl by-products having a terminal olefinic bond and a boiling point similar to that of the silyl ketene acetals. The method employs a platinum catalyst which specifically effects hydrosilation of the carbonyl by-product's terminal olefinic bond by an organohydrosilane. The platinum catalyst is the reaction product of hexachloroplatinic acid and sym-tetramethyldivinyldisiloxane. In a preferred method the silyl ketene acetal is separated from the hydrosilated carbonyl by-product by distillation.

Abstract: The present invention is a process for preparation of silyl ketene acetals. The process comprises contacting a mixture containing an organosilane having a silicon-bonded hydrogen (organohydrosilane) and a vinylic compound with RhCl(di-tert-butylsulfide).sub.2 as catalyst at a temperature within a range of about 20.degree. C. to 100.degree. C. The RhCl(di-tert-butylsulfide).sub.2 catalyst demonstrates higher activity than that typically described for rhodium catalysts, allowing for lower concentrations of catalyst and lower reaction temperatures to be used while maintaining high conversion to the desired silyl ketene acetals.

Abstract: 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, for example dimethylformamide or butan-2-one, which is at least a partial solvent for the platinous halide.The acomplexes are useful as catalysts for hydrosilylation reactions.

Abstract: The present invention is a process specific for the preparation of bis- and tris- amines by the contact of silylorganoamines in the presence of palladium monoxide catalyst. The process results in near quantitative conversion of the silylorganoamines to the desired bis- and tris-amines, without the need for elevated pressures and without formation of salts of ammonia and chloride.

Abstract: A quality assurance test method utilizing a fluorescent compound formed by reacting at least one aminofunctional organosilicon compound with at least one optical brightener having the formula ##STR1## and wherein R denotes anilino, sulfanilic, acid, metanilic acid, or anilin-2,5-disulfonic acid, and R' is methoxy, methylamino, N-methyl-N-hydroxyethylamino, bis(hydroxyethyl)amino, morpholino, anilino, or diethylamino.The organosilicon fluorescent compound is coated on the substrate and the substrate is placed under an ultraviolet light to check the extensiveness of the coating.

Abstract: A fluorescent "film prepared by reacting a polyfunctional acrylate with a fluorescent" compound formed by reacting at least one aminofunctional organosilicon compound with at lesat one optical brightener having the formula ##STR1## and wherein R denotes anilino, sulfanilic acid, metanilic acid, or anilin-2,5-disulfonic acid, and R' is methoxy, methylamino, N-methyl-N-hydroxyethylamino, bis(hydroxyethyl)amino, morpholino, anilino, or diethylamino.

Abstract: A method of treating textiles in order to increase the water absorptivity of the textiles involving contacting the textiles with an effective amount of a dioxolane functional organosilicon compound. Representative of the dioxolane or ketal functional organosilicon compounds employed are sym(2,2-dimethyl-4-methyloylpropyl-1,3-dioxolane) disiloxane and sym(2,2-dimethyl-4-methyl-oylpropyl-1,3-dioxolane) polydimethylsiloxane.

Abstract: Dioxolane-substituted silicon compounds are prepared by a hydrosilylation reaction between a silicon hydride and an aliphatically unsaturated dioxolane compound. The dioxolane-substituted silicon compounds are thereafter converted to diol-substituted silicon compounds and then to diacrylate-substituted silicon compounds. The latter are useful in a curable coating composition for providing a substrate with an adhesive-releasing coating.

Abstract: Microparticles, such as microspheres and microcapsules, comprising a solid organopolysiloxane are prepared by curing a dispersion of discrete entities by means of a Michael-type addition reaction. The discrete entities are dispersed in a fluid continuous phase and are sphere-like particles of a curable liquid organopolysiloxane composition, or such a liquid organopolysiloxane composition containing a material to be encapsulated. The microparticles may be elastomeric or resinous and are useful as filler particles and time-release capsules.

Abstract: A fluorescent compound formed by reacting at least one aminofunctional organosilicon compound with at least one optical brightener having the formula ##STR1## and wherein R denotes anilino, sulfanilic acid, metanilic acid, or anilin-2,5-disulfonic acid, and R' is methoxy, methylamino, N-methyl-N-hydroxyethylamino, bis(hydroxyethyl)amino, morpholino, anilino, or diethylamino.

Abstract: Organosilicon compositions which cure by way of a metal-catalyzed reaction of silicon-bonded hydroxyl radicals and/or silicon-bonded olefinic hydrocarbon radicals with silicon-bonded hydrogen atoms are stabilized for hours at room temperature by the incorporation of a hydrocarbonoxyalkyl maleate. However, the stabilized compositions are rapidly curable at low elevated temperature. Liquid organopolysiloxane compositions of this invention are particularly useful for coating operations, particularly paper coating operations to prepare an adhesive-releasing layer.

Abstract: Compositions which cure by a platinum-catalyzed reaction between silicon-bonded hydrogen atoms and silicon-bonded, aliphatically unsaturated hydrocarbon radicals have improved pot-life and cure-rate characteristics when a catalyst-inhibiting amount of a diorgano fumarate compound is added to the composition. Solventless coating compositions containing a dialkyl fumarate, a methylhydrogenpolysiloxane and a methylpolysiloxane bearing hexenyl radicals are particularly useful as adhesive-release coatings for acrylic-based pressure sensitive adhesives, applied in-line.

Abstract: A curable silicone composition comprising (i) an amine-functional organopolysiloxane and (ii) an acryl-functional organopolysiloxane selected from acyloxy-, methacryloxy or acrylamide-functional organopolysiloxanes is disclosed. Components (i) and (ii) of the composition cure by a Michael-type addition reaction to form a solid organopolysiloxane resin or elastomer. In a preferred embodiment, a room-temperature vulcanizable (RTV) elastomer results.

Abstract: An improved, curable, silicone, release coating composition is provided which cures more rapidly, at lower temperature, and with less residual reactive functionality. The composition contains siloxane polymers bearing higher alkenyl groups with 6 or more carbon atoms and cures by the metal catalyzed reaction of SiH with the alkenyl groups. An improved on-line process for preparing release laminates of substrates and adhesive using the coating composition is further provided.

Abstract: A simplified method of manufacture for platinum (O) alkyne complexes is disclosed, as well as novel platinum (O) alkyne complexes per se. The complexes are made by reacting platinum-vinylsiloxane complexes with alkynes. The complexes are used in hydrosilylation, hydrogenation, isomerization and oligomerization reactions. Curable silicones using these platinum (O) alkyne complexes as curing catalysts are also disclosed.

Abstract: A new method for making platinum-phosphine complexes and novel platinum-phosphine-vinylsiloxane complexes are disclosed. These complexes can be used in curable silicone compositions, thus providing curable silicone compositions of greatly enhanced stability at room temperature. The ability of the compositions to cure at elevated temperatures is not significantly compromised.