C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/7215, 400/72
C08L 83/07 (2006.01) C08K 3/36 (2006.01) C08K 5/00 (2006.01)
Patent
CA 1313920
STORAGE-STABLE LIQUID SILICONE RUBBER COMPOSITION CONTAINING A PLATINUM-ALKENYLSILOXANE COMPLEX CATALYST ABSTRACT The liquid silicone rubber compositions of this invention comprise an organopolysiloxane having silicon-bonded alkenyl radicals, a reinforcing silica filler and, as the curing catalyst, a platinum-alkenylsiloxane complex wherein the pKa value of the catalyst when measured under a specified set of conditions is from 2.0 -to 9.0, inclusive. The compositions have an excellent storage stability as one part of a two-package liquid silicone rubber composition that cures by a platinum catalyzed hydrosilation reaction.
546890
Dow Corning Toray Silicone Company Limited
Gowling Lafleur Henderson Llp
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