C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
400/4102, 154/92
C09K 3/10 (2006.01) C08K 3/22 (2006.01) C08L 83/04 (2006.01) C08L 83/08 (2006.01)
Patent
CA 1136311
ABSTRACT OF THE DISCLOSURE Self-bonding one-package room temperature vulcanizing silicone compositions, curable in the presence of moisture to rubbery materials, comprise (a) a silanol chain-stopped polydiorganopolysiloxane; (b) a fluid polysiloxane having a high degree of tri- and/or tetrafunctionality; (c) a silica filler; (d) a cross-linking silane evolving relatively low volatility carboxylic acid fragments on hydrolysis; and (e) a highly reactive tin-containing silanol condensation catalyst. Such compositions can be applied to a variety of difficulty bondable substrates. They are especially useful when subjected to hot oil environments, as in automobile engines. High temperature performance is markedly improved with the addition of an iron oxide thermal stabilizer. Gasketed constructions and methods for forming them are also disclosed.
330424
Company General Electric
Eckersley Raymond A.
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