Abstract:
A curable composition comprises (A) a polyfunctional acrylate; (B) a fluoro-substituted compound having an aliphatic unsaturated bond; (C) an organopolysiloxane having at least one acrylate group; and (D) a reinforcing filler. A cured product formed by curing the curable composition is also disclosed. A method of forming the cured product comprises applying the curable composition on a substrate. The method further comprises curing the curable composition on the substrate so as to form the cured product on the substrate.
Abstract:
A curable composition comprises (A) a polyfunctional acrylate; (B) a fluoro-substituted compound having an aliphatic unsaturated bond; (C) an organopolysiloxane having at least one acrylate group; and (D) a reinforcing filler. A cured product formed by curing the curable composition is also disclosed. A method of forming the cured product comprises applying the curable composition on a substrate. The method further comprises curing the curable composition on the substrate so as to form the cured product on the substrate.
Abstract:
A fluorinated compound having at least one (meth)acrylate functional group disclosed. A curable composition comprising the fluorinated compound and polyfunctional acrylate, a cured product formed from the curable composition, and method of forming the cured product are also disclosed.
Abstract:
A curable silicone composition is provided that comprises a reaction product of a reaction of (I) a clustered functional polyorganopolysiloxane having at least one radical curable group selected from an acrylate group and a methacrylate group; (II) a silicone reactive diluent, and a (III) a radical initiator.
Abstract:
A fluorinated compound having at least one (meth)acrylate functional group disclosed. A curable composition comprising the fluorinated compound and polyfunctional acrylate, a cured product formed from the curable composition, and method of forming the cured product are also disclosed.
Abstract:
A gel has improved thermal stability and is the ultraviolet hydrosilylation reaction product of (A) an organopolysiloxane having an average of at least 0.1 silicon-bonded alkenyl group per molecule and (B) a cross-linker having an average of at least 2 silicon-bonded hydrogen atoms per molecule. (A) and (B) react via hydrosilylation in the presence of (C) a UV-activated hydrosilylation catalyst comprising at least one of platinum, rhodium, ruthenium, palladium, osmium, and iridium, and (D) a thermal stabilizer. The (D) thermal stabilizer is present in an amount of from about 0.01 to about 30 weight percent based on a total weight of (A) and (B) and having transparency to UV light sufficient for the ultraviolet hydrosilylation reaction product to form.
Abstract:
A hydrosilylation process is used to prepare a clustered functional polyorganosiloxane. The clustered functional polyorganosiloxane comprises a reaction product of a reaction of a) a polyorganosiloxane having an average, per molecule, of at least 2 aliphatically unsaturated organic groups; b) a polyorganohydrogensiloxane having an average of 4 to 15 silicon atoms per molecule; and c) a reactive species having, per molecule at least 1 aliphatically unsaturated organic group and 1 or more radical curable groups selected from an acrylate group and a methacrylate group; in the presence of d) a hydrosilylation catalyst, and e) an isomer reducing agent. The weight percent of silicon bonded hydrogen atoms in component b) divided by the weight percent of aliphatically unsaturated organic groups in component a) (the SiHb/Via ratio) ranges from 4/1 to 20/1. The resulting clustered functional polyorganosiloxane is useful in a curable silicone composition for electronics applications.
Abstract:
A curable silicone composition is provided that comprises a reaction product of a reaction of (I) a clustered functional polyorganopolysiloxane having at least one radical curable group selected from an acrylate group and a methacrylate group; (II) a silicone reactive diluent, and a (III) a radical initiator.
Abstract:
A hydrosilylation process is used to prepare a clustered functional polyorganosiloxane. The clustered functional polyorganosiloxane comprises a reaction product of a reaction of a) a polyorganosiloxane having an average, per molecule, of at least 2 ahphatically unsaturated organic groups; b) a polyorganohydrogensiloxane having an average of 4 to 15 silicon atoms per molecule; and c) a reactive species having, per molecule at least 1 aliphatically unsaturated organic group and 1 or more radical curable groups selected from an acrylate group and a methacrylate group; in the presence of d) a hydrosilylation catalyst, and e) an isomer reducing agent. The weight percent of silicon bonded hydrogen atoms in component b) divided by the weight percent of aliphatically unsaturated organic groups in component a) (the SiHb/Via ratio) ranges from 4/1 to 20/1. The resulting clustered functional polyorganosiloxane is useful in a curable silicone composition for electronics applications.