Self-adhering polyorganosiloxane elastomer compositions and meth

Details Self-adhering polyorganosiloxane elastomer compositions and meth Self-adhering polyorganosiloxane elastomer compositions and meth

1986-10-15

1988-04-12

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From silicon reactant having at least one...

528 14, 528 16, 528 18, 528 21, 528 17, 528 23, 528 33, 528 34, 528 35, 528 38, C08G 7706

Patent

active

047375620

ABSTRACT:
Polyorganosiloxane compositions yielding cured elastomers exhibiting cohesive bonding to inorganic substrates contain as the adhesion promoter the combination of (1) a 1,2- bis(trialkoxysilyl)ethane of the general formula (RO).sub.3 SiCH.sub.2 CH.sub.2 Si(OR).sub.3 where R represents an alkyl or haloalkyl radical containing from 1 to 8 carbon atoms, (2) an organosilicon 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.

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patent: 4460639 (1984-07-01), Ashby
patent: 4525400 (1985-06-01), Suprenant
patent: 4652624 (1987-03-01), Allen et al.

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