Direct adhesion polysiloxane moulding and sealant compositions

Details Direct adhesion polysiloxane moulding and sealant compositions Direct adhesion polysiloxane moulding and sealant compositions

C - Chemistry, Metallurgy

08

K

400/5310, 400/72

C08K 5/54 (2006.01) C08K 5/00 (2006.01) C08L 83/04 (2006.01)

Patent

CA 1160788

Abstract of the Disclosure In a polysiloxane molding composition which in the presence of water crosslinks to an elastomer and which comprises A) an .alpha.,.omega.-dihydroxyorganopolysiloxane with a viscosity of about 500 to 2,000,000 cP, B) a crosslinking agent, and C) a reinforcing filler, the improvement which comprises including, therein in about 0.1 to 10% by weight a silicon compound containing at least 3 alkoxy groups and preferably of the formula Rn Si(Alkoxy)4-n in which R is alkyl with 1 to 10 carbon atoms, Alkoxy has 1 to 4 carbon atoms, and n is 0 or 1, whereby the elastomer ultimately produced exhibits improved direct adhesion to various substrates. * * * *

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