Abstract: A curable silicone coating composition which is resistant to dirt pickup, comprising:(1) a vinyl chainstopped polysiloxane having a viscosity up to 2,000,000 centipoise;,(2) 1 to 2 parts of a resinous organopolysiloxane copolymer per part of (1);(3) a platinum catalyst and,(4) an organohydrogenpolysiloxane crosslinking agent.

Abstract: Low viscosity elastomeric silicone foam compositions are produced which do not bleed, split or rupture with cure where viscosity is controlled by controlling the content of the vinyl containing polysiloxane portion of the foam.

Abstract: Low viscosity elastomeric silicone foam compositions are produced which do not bleed, split or rupture with cure where viscosity is controlled by controlling the content of the vinyl containing polysiloxane portion of the foam.

Abstract: Amine compounds are added to foamable elastomeric silicone foam to reduce foam density.

Abstract: Treated filler having surface nitrogen groups is added to silicone foam to reduce density.

Abstract: A curable silicone coating composition which is resistant to dirt pickup, comprising:(1) a vinyl chainstopped polysiloxane having a viscosity up to 2,000,000 centipoise;(2) 1 to 2 parts of a resinous organopolysiloxane copolymer per part of (1);(3) a platinum catalyst and,(4) an organohydrogenpolysiloxane crosslinking agent.

Abstract: A curable silicone coating composition which is resistant to dirt pickup, comprising:(1) a vinyl chainstopped polysiloxane having a viscosity up to 2,000,000 centipoise;(2) 1 to 2 parts of a resinous organopolysiloxane copolymer per part of (1);(3) a platinum catalyst and,(4) an organohydrogenpolysiloxane crosslinking agent.

Abstract: Novel UV-curable silicone release coating compositions and photocatalysts therefor are provided which include hydrogen-functional and vinyl-functional photoreactive terpolymers, which are especially compatable with certain perbenzoate ester photocatalysts. The addition of certain polyaromatic photosensitizers to enhance cure is also disclosed.

Abstract: A method for imparting improved tear strength and improved flame retardance to a base fabric material comprising applying to at least one side of said base fabric material a base silicone coating composition containing an amount of non-abrasive filler effective for imparting tear strength and flame retardance.

Abstract: Novel UV-curable silicone release coating compositions and photocatalysts therefor are provided which include mercaptoalkoxyalkyl-functional polysiloxanes and vinyl-functional photoreactive terpolymers, both of which are especially compatable with certain perbenzoate ester photocatalysts. The addition of certain polyaromatic photosensitizers to enhance cure is also disclosed.

Abstract: Novel UV-curable silicone release coating compositions and photocatalysts therefor are provided which include mercaptoalkoxyalkyl-functional polysiloxanes and vinyl-functional photoreactive terpolymers, both of which are especially compatable with certain perbenzoate ester photocatalysts. The addition of certain polyaromatic photosensitizers to enhance cure is also disclosed.

Abstract: A dirt resistant silicone coating composition comprising:(1) a base vinyl chainstopped polysiloxane,(2) a resinous organopolysiloxane copolymer,(3) a platinum catalyst and,(4) a liquid organohydrogenpolysiloxane crosslinking agent.

Abstract: A curable silicone coating composition which is resistant to dirt pickup, comprising:(1) a vinyl chainstopped polysiloxane having a viscosity up to 2,000,000 centipoise;(2) 1 to 2 parts of a resinous organopolysiloxane copolymer per part of (1);(3) a platinum catalyst and,(4) an organohydrogenpolysiloxane crosslinking agent.

Abstract: A dirt resistant silicone coating composition comprising:(1) a base vinyl chainstopped polysiloxane,(2) a resinous organopolysiloxane copolymer,(3) a platinum catalyst and,(4) a liquid organohydrogenpolysiloxane crosslinking agent.

Abstract: A method of reducing the density of a silicone foam is provided comprising mixing with a foamable silicone composition having a base polydiorganosiloxane, an effective amount of a resinous copolymer selected from the group consisting of resinous copolymers of R.sub.3 SiO.sub.0.5 units and SiO.sub.2 units, and ratio of R.sub.3 SiO.sub.0.5 units ranging from 0.25 to 0.8:1, and resinous copolymers formed from R.sub.3 SiO.sub.0.5 units, R.sub.2.sup.1 SiO units and SiO.sub.2 units, the ratio of R.sub.3 SiO.sub.0.5 to SiO.sub.2 units ranging from 0.25 to 0.8:1 and the ratio of R.sub.2.sup.1 SiO to SiO.sub.2 units ranging from 0 to 0.1:1, and thereafter simultaneously foaming and curing the mixture.

Abstract: A process for insulating electrical components located in a conduit from fire comprising mixing and pouring into the conduit a composition comrising a vinyl-containing polysiloxane polymer, an extending filler which is preferably alpha quartz, a platinum catalyst and a hydrogen-containing polysiloxane. The composition is allowed to surround the electrical components in the conduit and cured at room temperature to a solid silicone elastomer. Such a process has been found imminently suitable for insulating electrical components in a nuclear plant from fire for an extended period of time so as to maintain the electrical integrity of the components.

Abstract: A method for mechanically foaming a silicone composition comprising (1) beating a gas a silicone composition which may be SiH olefin platinum catalyzed composition, a condensation type of two-component RTV composition or condensation type of one-component RTV composition and then holding the foamed composition for at least 60 seconds under vacuum of at least 600 millimeters of mercury so as to allow the foam to gel and cure.

Abstract: Platinum complexes of unsaturated siloxanes, substantially free of inorganic halogen and inhibitory compounds, provide superior hydrosilation catalysts when the unsaturated siloxane comprises, per gram-atom of platinum,(i) a combination of one mole of (CH.sub.2 .dbd.CH)((R).sub.2 Si).sub.2 O, and one mole of (CH.sub.2 .dbd.CH) (R).sub.2 SiOSi(R.sub.2)OH;(ii) two moles of (CH.sub.2 .dbd.CH)((R).sub.2 Si).sub.2 O; or(iii) a mixture of (i) and (ii),wherein R is free of aliphatic unsaturation and is selected from alkyl, cycloalkyl, and aryl groups.

Abstract: A silicone foam composition comprising a vinyl-containing polysiloxane, optionally a filler, water, a hydrogen-containing polysiloxane and a platinum catalyst. Such a silicone foam composition is useful as flame insulative material and especially for electrical systems in nuclear plants.

Abstract: A dirt resistant silicone coating composition comprising:(1) a base vinyl chainstopped polysiloxane,(2) a resinous organopolysiloxane copolymer,(3) a platinum catalyst and,(4) a liquid organohydrogenpolysiloxane crosslinking agent.