Abstract: Acrylic functional siloxane polymer compositions which are especially useful for ultraviolet curable silicone release coating applications are provided as a reaction product of omega-chloro-1-alkenes, dialkylhydrogen chainstopped polydialkylalkylhydrogen siloxane copolymers, catalytic amounts of precious metal complexes and acrylic functional monomers.

Abstract: There is provided a platinum or rhodium catalyzed addition curable polyorganosiloxane release coating composition containing a dialkylacetylenedicarboxylte inhibitor for preventing premature gellation at ambient temperatures but which will cure at elevated temperatures via a hydrosilation reaction to form a coating capable of releasing materials from substrates which would normally adhere thereto.

Abstract: There are provided addition-curable silicone release compositions comprised of a vinyl or silanol functional polymer base, a crosslinker containing silanic hydrogen, a precious metal catalyst such as platinum or rhodium, an optional carboxylic ester inhgibitor and silicone vinyl gum cure accelerations effective for allowing thermal cure at relatively lower temperatures while minimizing the necessity of excess metal catalyst.

Abstract: Epoxy functional diorganosiloxane fluids are combined with bis-aryl iodonium salts, particularly linear alkylate bis-dodecylphenyl iodonium salts to form a silicone coating composition effective for rendering surfaces non-adherent to other surfaces which would normally adhere thereto, and which will cure to a final non-adherent state upon brief exposure to ultraviolet radiation. Adhesion of the silicone coating to a substrate can be improved with the addition of .beta.-(3,4-epoxycyclohexyl)ethyltrimethoxy silane.

Abstract: A silicone rubber composition with a good shelf life and fast curing at elevated temperatures comprising a silanol end-stopped diorganopolysiloxane polymer, a silicone hydride and a rhodium complex catalyst in combination with an inhibitor compound selected from low molecular weight silanol end-stopped diorganopolysiloxanes, acetylenic compounds, olefinic carboxylic acid esters of aliphatic alcohols, alkenyl isocyanurates and mixtures of the above inhibitor compounds. The above compositions are especially suited as release coatings for plastic and cellulosic subtrates including paper.

Abstract: A solventless release coating composition is provided as well as a method for rendering materials nonadherent to other materials which would normally adhere thereto. The coating composition is a platinum-metal-complex catalyzed silicone composition comprising a vinyl or silanol functional polysiloxane base polymer and a methylhydrogen crosslinking agent. Diallylmaleate is added to the composition in order to extend the useful shelf-life of the product by inhibiting any premature crosslinking reactions; the useful pot-life at ambient temperatures of the catalyzed composition can also be extended.