Abstract: Organopolysiloxane-based compositions that are used to prepare silicone rubbers that are flame retardant and to the use of such rubbers. More specifically, flame retardant rubbers that are useful as coatings, for example, as marine deck coatings, firewall construction and fireblanket applications. The materials are resin reinforced silicone polymers used in conjunction with ceramic hollow spheres and they have demonstrated good performance in flame retardancy tests.

Abstract: A pressure sensitive adhesive composition comprises a mixture of (A) a silicate resin, (B) a silicone fluid, and (C) a thermoplastic multi-segmented copolymer which is a product of the reaction between a diisocyanate and a reactive polyorganosiloxane having two groups reactive with isocyanate thereon. The thermoplastic multi-segmented copolymer comprises from about 1 to about 40 weight percent hard segments derived from reactants selected from the group consisting of organic diisocyanates, organic diols, and organic diamines and from about 60 to about 99 weight percent soft segments comprising from about 15 to about 99 weight percent, based on the weight of the thermoplastic multi-segmented copolymer, of polyorganosiloxane units and from about 0 to about 70 weight percent, based on the weight of the thermoplastic multi-segmented copolymer, of polyalkylene oxide units.

Abstract: The instant invention pertains to a hot-melt pressure sensitive adhesive composition wherein the composition is comprised of a silicone pressure sensitive adhesive selected from the group consisting of a mixture of (i) a silicone resin and (ii) a silicone fluid and a condensed product of (i) and (ii); the silicone pressure sensitive adhesive exhibiting tackiness and adhesiveness; the silicone pressure sensitive adhesive being blended with (iii) from about 1 to 20 weight percent, based on the total weight of (i) and (ii), of a siloxylated polyether wax. The instant invention also encompasses method of using the composition, methods of making hot-melt silicone pressure sensitive adhesive-coated substrates, and devices made using the composition.

Abstract: The instant invention pertains to a hot-melt pressure sensitive adhesive composition wherein the composition is comprised of a silicone pressure sensitive adhesive selected from the group consisting of a mixture of (i) a silicone resin and (ii) a silicone fluid and a condensed product of (i) and (ii); the silicone pressure sensitive adhesive exhibiting tackiness and adhesiveness; the silicone pressure sensitive adhesive being blended with (iii) from about 1 to 20 weight percent, based on the total weight of (i) and (ii), of a siloxylated polyether wax. The instant invention also encompasses method of using the composition, methods of making hot-melt silicone pressure sensitive adhesive-coated substrates, and devices made using the composition.

Abstract: Hot-melt silicone pressure sensitive adhesive compositions containing alkylmethylsiloxane waxes and methods of using the compositions are disclosed. The hot-melt silicone pressure sensitive adhesive compositions include a mixture of (i) a silicate resin, (ii) a silicone fluid, and (iii) an alkylmethylsiloxane wax having a melting point of between 30.degree. C. and 70.degree. C. The alkylmethylsiloxane wax decreases dynamic viscosity of the adhesive compositions at temperatures ranging from about 50.degree. C. to about 200.degree. C.

Abstract: Hot-melt silicone pressure sensitive adhesive compositions containing alkylmethylsiloxane waxes, methods of using the compositions and devices made using the compositions are disclosed. The hot-melt silicone pressure sensitive adhesive compositions include a mixture of (i) a silicate resin, (ii) a silicone fluid, and (iii) an alkylmethylsiloxane wax having a melting point of between 30.degree. C. and 70.degree. C. The alkylmethylsiloxane wax decreases dynamic viscosity of the adhesive at temperatures ranging from about 50.degree. C. to about 200.degree. C.

Abstract: Hot-melt silicone pressure sensitive adhesive composition, methods of using the composition, article made using the composition, and methods of making articles using the composition. The hot-melt silicone pressure sensitive adhesive composition includes a mixture of (i) a silicone resin, (ii) a silicone fluid, and (iii) from about 0.5 to about 10 weight percent, based on the total weight of the silicone resin and the silicone fluid, of a non-flammable hydrocarbon having a weight-average molecular weight of from about 300 to about 1500 as measured by gel permeation chromatography calibrated with narrow distribution polydimethylsiloxane standards.

Abstract: A method of making a hot-melt silicone pressure sensitive adhesive-coated substrate comprises (a) heating a hot-melt silicone pressure sensitive adhesive composition which includes a mixture of (i) a silicone resin, (ii) a silicone fluid, and (iii) from about 0.5 to about 10 weight percent, based on the total weight of the silicone resin and the silicone fluid, of a non-flammable hydrocarbon having a weight-average molecular weight of from about 300 to about 1500 as measured by gel permeation chromatography calibrated with narrow distribution polydimethylsiloxane standards (b) coating the heated adhesive composition onto a substrate, and (c) cooling the coated adhesive composition until it is in a generally non-flowing state.

Abstract: Hot-melt silicone pressure sensitive adhesive compositions, methods of using the compositions, articles made using the compositions, and methods of making articles using the compositions. The hot-melt silicone pressure sensitive adhesive compositions include a mixture of (i) a silicone resin, (ii) a polyolimethylsiloxane fluid, and (iii) from about 0.5 to about 20 weight percent, based on the total weight of the silicone resin and the polydimethylsiloxane fluid, of a polyphenylmethylsiloxane fluid having a viscosity at 25.degree. C. of from about 5 to about 60,000 centistokes so that the adhesive will be in a generally flowing state at temperatures above about 100.degree. C., as well as being capable of transdermal drug delivery.

Abstract: Hot-melt silicone pressure sensitive adhesive composition, methods of using the composition, article made using the composition, and methods of making articles using the composition. The hot-melt silicone pressure sensitive adhesive composition includes a mixture of (i) a silicone resin, (ii) a silicone fluid, and (iii) from about 0.5 to about 10 weight percent, based on the total weight of the silicone resin and the silicone fluid, of a non-flammable hydrocarbon having a weight-average molecular weight of from about 300 to about 1500 as measured by gel permeation chromatography calibrated with narrow distribution polydimethylsiloxane standards.

Abstract: A pressure-adherent silicone elastomer composition comprising a homogeneous mixture of a silicone pressure sensitive adhesive composition, a crosslinkable silicone elastomer composition, and, optionally, a viscosity reducing agent. Specifically, the silicone pressure sensitive adhesive composition is a condensation product, having a plasticity of less than 200 mils, of a benzene-soluble resinous copolymer containing silicon-bonded hydroxyl radicals and consisting essentially of triorganosiloxy units of the formula R.sub.3 SiO.sub.1/2 and tetrafunctionalsiloxy units of the formula SiO.sub.4/2 in a ratio of about 0.6 to 0.9 triorganosiloxy units for each tetrafunctionalsiloxy unit present in the copolymer and a polydiorganosiloxane having a viscosity from 100 centipoise to 50,000 centipoise at 25.degree. C.

Abstract: A hot-melt silicone pressure sensitive adhesive composition comprising (i) a silicon resin, (ii) a silicone fluid, and (iii) 1 to 10 weight percent based on the total weight of said silicone resin and said silicone fluid, an ester having the formula: ##STR1## wherein R is a monovalent hydrocarbon radical having from 2 to 32 carbon atoms, and R' is a monovalent hydrocarbon radical having from 1 to 14 carbon atoms.

Abstract: A transdermal drug delivery system, is provided which includes, in combination, an impermeable backing member, a matrix containing a medicinally active ingredient, and a pressure sensitive adhesive for affixing the system to the skin of a patient; the improvement in such system is based on the fact that said matrix is drug permeable (including to hydrophilic drugs) and is formed of a copolymer which can be softened sufficiently at temperature between 45.degree. C. and 160.degree. C. to incorporate the drugs therein without damage caused by heat or chemical reactions, the matrix being formed of a substantially linear block copolymer which is a reaction product of a polydiorganosiloxane which forms "soft" segments in said reaction product and a diisocyanate which forms "hard" segments, said copolymer having a glass transition temperature between 45.degree. C. and 160.degree. C.

Abstract: The presence of immiscible silica treating agents in high viscosity, pumpable polyorganosiloxane compositions alters the rheology of these compositions sufficiently to permit fabrication of unsupported profiles that retain their initial configuration during heat curing. The immiscible treating agent constitutes from 20 to 100 percent by weight of the total treating agent present in the composition.

Abstract: Compositions which cure to electrically conductive silicone elastomers containing greater than 2 percent by weight of phenyl radicals, are disclosed. The compositions comprise a mixture of polydiorganosiloxane and greater than 15 percent by weight of electrically conductive carbonaceous particles of less than 20 micrometers average diameter. Electrically conductive members of controlled resistivity are manufactured using these compositions. These electrically conductive members are useful as the core for improved automotive ignition cable. The ignition cable has a long useful life.

Abstract: This invention provides organopolysiloxane elastomers exhibiting a desirable combination of high durometer hardness, tensile strength and tear strength, and a level of heat stability sufficient to retain these properties following prolonged exposure to temperatures above 150.degree. C. The elastomers are prepared by curing a vinyl endblocked polydiorganosiloxane, an organopolysiloxane resin having a specified concentration of vinyl groups, a treated silica filler containing vinylsiloxy groups bonded to the silica particles and a organohydrogenpolysiloxane in the presence of a suitable platinum catalyst.

Abstract: Compositions which cure to electrically conductive silicone elastomers containing greater than 2 percent by weight of phenyl radicals, are disclosed. The compositions comprise a mixture of polydiorganosiloxane and greater than 15 percent by weight of electrically conductive carbonaceous particles of less than 20 micrometers average diameter. Electrically conductive members of controlled resistivity are manufactured using these compositions. These electrically conductive members are useful as the core for improved automotive ignition cable. The ignition cable has a long useful life.