Polysiloxanes grafted with radically curable and/or moisture curable groups
View Patent ↗This application relates to polysiloxane compositions grafted with improved heat curable, moisture curable, or heat/moisture curable groups. In particular, the polysiloxane compositions have reactive groups on the terminal or pendent areas of the siloxane backbone, which once reacted provide improved heat and/or moisture curable polysiloxanes.
1. A curable composition comprising at least one component having the structure:
wherein R in each occurrence may be the same or may be different and is selected from alkyl groups having 1 to 4 carbons;
R l is a substituted or unsubstituted alkylenylsiloxy group, a substituted or unsubstituted alkylenyl(meth)acryloxy group, a substituted or unsubstituted alkylenylenoxy group, a substituted or unsubstituted alkylenyloximino group, or a substituted or unsubstituted alkylenylacetoxy group;
R 2 is a (meth)acryloxy group;
R 3 is an unsaturated group;
R 4 and R 5 may be the same or may be different; and may be independently selected from any of the groups of R, R 1 , R 2 or R 3 ;
n is any integer from 1 to 12,000;
m is any integer from about 1 to about 20; and
p is any integer from about 0 to about 20.
2. The composition of claim 1 , wherein R 3 is a vinyl-containing group.
3. The composition of claim 1 , wherein said composition further includes a catalyst selected from the group consisting of moisture cure catalysts, heat cure catalysts, light cure catalysts, and mixtures thereof.