Curable organosiloxane compositions

Details Curable organosiloxane compositions Curable organosiloxane compositions

C - Chemistry, Metallurgy

08

L

400/5331

C08L 83/07 (2006.01) C08L 83/04 (2006.01)

Patent

CA 1326098

CURABLE ORGANOSILOXANE COMPOSITIONS ABSTRACT The tear strength of cured organosiloxane elastomers can be increased without adversely affecting other physical properties if the composition used to prepare the elastomer is curable by a platinum-catalyzed hydrosilation reaction and contains a mixture of two liquid diorganovinyl- siloxy terminated polydiorganosiloxanes, one of which constitutes from 70 to 95 percent by weight of said mixture and contains vinyl or other ethylenically unsaturated hydrocarbon radicals only at the terminal positions. The second polydiorganosiloxane contains both terminal vinyl radicals and from 1 to 5 mole percent of vinyl radicals on non-terminal repeating units.

573690

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