Addition-curable silicone adhesive compositions

Details Addition-curable silicone adhesive compositions Addition-curable silicone adhesive compositions

C - Chemistry, Metallurgy

09

J

C09J 183/07 (2006.01) C08K 5/5425 (2006.01) C09J 183/04 (2006.01)

Patent

CA 2061974

Docket No. 60Sl-1371 Abstract of the Invention A fast curing, addition-curable silicone composition curable to form an adhesive having good physical properties and improved lap shear adhesive properties, comprising (A) a vinyl-containing polydiorganosiloxane composition, (B) a hydrogen-terminated polysiloxane in an amount sufficient to provide an adhesion-promoting molar ratio of silicon-bonded hydrogen atoms in (B) to olefinically unsaturated radicals in (A); (C) a catalytic amount of a platinum- containing hydrosilation catalyst; (D) an effective amount of an adhesion promoter selected from the group consisting of (i) bis[3-(trimethoxysilyl)alkyl]- fumarates; (ii) bis[3-(trimethoxysilyl)alkyl]maleates; (iii) allyl-[3- (trimetha3tysilyl)alkyl]maleates; (iv) allyl-[3-(trimethoxysilyl)alkyllfumarates; and (v) N- radicals of 1 to about 8 carbon atoms; and (E) from about 0 to about 200 parts of an extending filler; and (F) from about 0 to about 50 parts of a reinforcing filler; providing that (F) must be present if (A)(ii) is absent.

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