C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/32 (2006.01) B05D 3/06 (2006.01) C08G 77/20 (2006.01) C08G 77/26 (2006.01) C08G 77/28 (2006.01) C08L 83/04 (2006.01) C09D 183/04 (2006.01)
Patent
CA 2152763
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)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. We have found that adding a functionalizing silane having only two hydrolyzable groups to a preformed polydiorganosiloxane emulsion results in functionalized polydiorganosiloxane molecules which are free of crosslinks between the polydiorganosiloxane chains.
Liles Donald Taylor
Murray David Logan
Dow Corning Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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