Curable norbornenyl functional silicone formulations

Details Curable norbornenyl functional silicone formulations Curable norbornenyl functional silicone formulations

C - Chemistry, Metallurgy

08

G

400/4102, 400/53

C08G 77/04 (2006.01) C08G 77/20 (2006.01) C08G 77/22 (2006.01) C08G 77/38 (2006.01) C08L 83/04 (2006.01) C08L 83/08 (2006.01)

Patent

CA 2010870

CURABLE NORBORNENYL FUNCTIONAL SILICONE FORMULATIONS Abstract of the Disclosure A composition cureable to a solid crosslinked polyorganosiloxane comprises: a) a norbornene functional silicone prepolymer having a plurality of groups of the formula: Image bound to silicon atoms thereof, where R is H or methyl, R1 is a direct bond or -C(=O)O- and R4 is ethylene, ethenylene, propylene or propenylene, b) a coreactive silicone prepolymer selected from SiH functional silicones, and alkylthiol functional silicones, said polyorganosiloxanes (a) and (b) being present in an equivalent ratio of between 2:1 and 1:2 norbornene to silicon hydride or alkyl thiol groups, and c) an effective amount of a hydrosilation or thiolene cure catalyst, respectively.

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