Self-adhering polyorganosiloxane elastomer compositions and method for preparing same

Abstract From the Canadian patent

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 …