Owens-corning Fiberglas Corporation

Lawrence P Biefeld

Kevin M Foley

Frank Paul McCombs

Organo silicon compounds prepared by reaction of a dialkyl hydrazine of the formula ##EQU1## wherein R.sub.1 and R.sub.2 are each alkyl with an epoxy silane such as an epoxy silane of the formula ##EQU2## or an epoxy silane of the formula ##SPC1## Where y is an integer and R.sub.5 is alkyl. The organo silicon compounds described can be employed in the treatment of glass fibers to improve the bonding relationship between glass fibers and resins or elastomeric materials.

Organo silicon derivatives coated on glass fibers

Organo silicon compounds having the formula ##EQU1## wherein R.sub.1 and R.sub.2 are alkyl, R.sub.5 is a hydrocarbon group or an unsaturated ester group, R.sub.6 and R.sub.7 are alkoxy, R.sub.5 or hydrogen, and R.sub.8 is hydrogen or an organic group such as hydrogen, alkyl or a group of the formula

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Toledo, OH, United States of America

Lawrence P Biefeld