Curable compositions and process

Details Curable compositions and process Curable compositions and process

1975-05-19

1978-07-11

Lieberman, Paul

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 18S, 260825, 528 14, 528 15, 528 16, 528 17, 528 18, 528 19, 528 34, C08G 7704, C08L 4304

Patent

active

041001290

ABSTRACT:
Self-bonding, low modulus, one-package room temperature vulcanizing silicone compositions, curable in the presence of moisture, comprise (a) a silanol chain-stopped polydiorganopolysiloxane; (b) a cross-linking silane; and (c) a silanol reactive organometallic ester compound of a metal, the compound having radicals attached to the metal atom, at least one of the radicals being a substituted or unsubstituted hydrocarbonoxy radical, attachment being through M--O--C linkages, where M is the metal, and any remaining valences of M are satisfied by other organo radicals attached to M through such linkages, or an --OH, --O-- or M--O--M linkage, the weight ratio of components (c) to (b) always being at least 0.5 to 1. Such compositions have unusually high adhesion to a variety of difficulty bondable substrates.

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