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US 4,906,686 AGranted
Curable organopolysiloxane composition
AssigneeToray Silicone Company, Ltd.
InventorsToshio Suzuki, Akira Kasuya
Life of this patent
Estimating the term…
Abstract
The addition-curable composition of the present invention, because it comprises a special component as component (D), is characterized by an excellent bonding to any of various substrates with which it is in contact during curing. Component (D) is a mixture, or reaction product, of (a) a silicon-free compound which contains at least 1 alcoholic hydroxyl group and at least 1 alkenyl group in each molecule, and (b) an organosilane having in each molecule at least 1 alkoxy group and at least 1 epoxy or methacryloxy or acryloxy group.
Claims4
A curable organopolysiloxane composition comprising
- (A) an organopolysiloxane having at least 2 silicon-bonded alkenyl groups in each molecule;
- (B) an organopolysiloxane having at least 2 silicon-bonded hydrogen atoms in each molecule, in a quantity which provides a value within the range of 0.5:1 to 5:1 for the molar ratio between the silicon-bonded hydrogen atoms in component (B) and the alkenyl groups in component (A);
- (C) a catalytic quantity of a platinum-group catalyst;
- and
- (D) a mixture of, or a reaction product of, compounds consisting of
- (a) a compound which lacks silicon atoms and which contains at least 1 alcoholic hydroxyl group and at least 1 alkenyl group in each molecule, and
- (b) an organosilane having in each molecule at least 1 alkoxy group and at least 1 epoxy or methacryloxy or acryloxy group, in a quantity which provides a value in the range of 100:0.1 to 100:10 as the weight ratio for the ratio between the combined quantity of components (A) plus (B) and component (D).
4 more elements
Dependencies are inferred from the claim text.