C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
402/17
C08K 5/00 (2006.01) C08K 5/54 (2006.01) C08L 83/04 (2006.01)
Patent
CA 1285690
SELF-ADHERING POLYORGANOSILOXANE ELASTOMER COMPOSITIONS AND METHOD FOR PREPARING SAME Abstract Polyorganosiloxane compositions yielding cured elastomers exhibiting cohesive bonding to inorganic substrates contain as the adhesion promoter the combination of 1) a 1,2-bi3(trialkoxysilyl)ethane of the general formula (RO)3SiCH2CH2Si(OR)3 where R represents an alkyl or haloalkyl radical containing from 1 to 8 carbon atoms, 2) an organo- silicon compound containing at least one hydroxyl group or a hydrolyzable precursor thereof and at least one group that reacts at ambient temperature with the alkoxy groups of the silylethane or with the curable polyorganosiloxane composition, and 3) a catalyst for the reaction of the adhesion promoter ingredients. Preferred compositions are cured at room temperature by a platinum catalyzed hydrosilation reaction and are applied to metallic substrates that have not been cleaned or otherwise treated prior to application of the composition.
545235
Chaudhury Manoj Kumar
Gaul John Henry
Dow Corning Corporation
Gowling Lafleur Henderson Llp
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