Room temperature curable organopolysiloxane compositions and...

Details Room temperature curable organopolysiloxane compositions and... Room temperature curable organopolysiloxane compositions and...

C - Chemistry, Metallurgy

09

K

402/15, 400/4102

C09K 3/10 (2006.01) C08L 83/04 (2006.01) C08L 83/08 (2006.01)

Patent

CA 1144686

Abstract A low modulus silicone rubber which cures at room temperature can be obtained by exposing a composition made from a hydroxyl endblocked polydiorganosiloxane, an aminoxy silicon compound having two aminoxy groups per molecule, such as, methylvinyldi-(N,N-diethylaminoxy)silane, and a hydrolyzable organosilicon compound which has at least three hydrolyzable groups per molecule including oxime, alkoxy, amino, vinyloxy, amide, imide, and lactam such as methyltri(N-methylacetamido)- silane or methyltrimathoxysilane. The compositions can be packaged in a single container and, if sealed, remain stable until exposed to moisture. The compositions can be made by a two-step method comprising mixing the aminoxy silicon compound and the hydroxyl endblocked polydiorganosiloxane and thereafter blending in the hydrolyzable organosilicon compound.

372100

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