초록 ▼

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 addit

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.

대표청구항 ▼

A curable composition comprising: (i) an amine-functional organopolysiloxane consisting of a plurality of independently selected units of the formula [Figure] wherein X is an amine-functional organic group bearing at least one －NHR″group, in which R″is hydrogen or an alkyl radical having 1-6 carbon

A curable composition comprising: (i) an amine-functional organopolysiloxane consisting of a plurality of independently selected units of the formula [Figure] wherein X is an amine-functional organic group bearing at least one －NHR″group, in which R″is hydrogen or an alkyl radical having 1-6 carbon atoms, R is a group selected from alkyl, cycloalkyl, haloalkyl, aromatic or haloaromatic radicals, a has a value of 0, 1, 2, or 3, b has a value of 0, 1 or 2, and the sum (a+b) is less than 4, there being on average at least two X groups per molecule of said amine-functional organopolysiloxane; and (ii) an acryl-functional organopolysiloxane consisting of a plurality of independently selected units of the formula [Figure] wherein Z is an acryl-functional organic group bearing at least one group selected from acryloxy, methacryloxy or acrylamide radicals, R has been previously defined, c has a value of 0, 1, 2, or 3, d has a value of 0, 1 or 2, and the sum (c+d) is less than 4, there being on average at least two Z groups per molecule of said acryl-functional organo-polysiloxane, and at least one of (i) and (ii) has an average of more than two of said X groups and said Z groups, respectively, per molecule.