C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
402/15, 400/7201
C08J 3/24 (2006.01) C08L 83/04 (2006.01)
Patent
CA 1271968
SELF-BONDING ROOM TEMPERATURE VULCANIZABLE SILICONE COMPOSITIONS ABSTRACT OF THE DISCLOSURE There is provided a composition which vulcanizes at room temperature on exposure to moisture comprising a product resulting from mixing: (A) an organopolysiloxane consisting essentially of repeating R2SiO units, where R is a C(1-13) monovalent substituted or unsubstituted hydrocarbon radical; (B) an effective amount of condensation catalyst, and (C) an effective amount of self-bonding agent of the general formula Image where R1 is a C(1-7) monovalent hydrocarbon radical, R2 is a C(1-4) alkyl radical, C(1-4) acyl radical or a radical of the formula -?-CH2CH2O)nR4, where n is 1 or 2 and R4 is a C(1-4) alkyl radical, R3 is a C(1-18) divalent hydrocarbon radical free of altiphatic unsaturation attached to a nitrogen atom of the urea nucleus through a non-aromatio carbon atom, Z is hydrogen or a C(1-4) alkyl radical and y equals 0 or 1.
476143
Ashby Bruce Allan
Lucas Gary Morgan
Company General Electric
Eckersley Raymond A.
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