Functional polyorganosiloxane emulsions from dihydrolyzable sila

Details Functional polyorganosiloxane emulsions from dihydrolyzable sila Functional polyorganosiloxane emulsions from dihydrolyzable sila

1994-06-30

1995-09-12

Marquis, Melvyn I.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

522 84, 522 86, C08L 8304

Patent

active

054497167

ABSTRACT:
A non-crosslinked polymer, comprising a preformed aqueous emulsion having a plurality of silanol-terminated polydiorganosiloxane particles, a functionalizing silane having the formula RQSi(X).sub.2 where X is a hydrolyzable group, Q is an organic functional group which does not prevent a condensation reaction between X and a silanol-terminated polydiorganosiloxane molecule, R is Q, or a saturated monovalent hydrocarbon group of from one to six carbon atoms, and an organotin catalyst. The composition results in a non-crosslinked polymer, unlike the polymers described in the prior art. It has been found that adding a functionalizing silane having only two hydrolyzable groups to a preformed polydiorganosiloxane emulsion results in functionalized polydiorganosiloxane molecules free of crosslinks between the polydiorganosiloxane chains.

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