Moisture curable silicone-urethane copolymer sealants

Details Moisture curable silicone-urethane copolymer sealants Moisture curable silicone-urethane copolymer sealants

1992-12-14

1994-07-05

Bleutge, John C.

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

Synthetic resins

From silicon reactant having at least one...

528 33, 528 65, 427387, 524728, 524789, C08G 7726

Patent

active

053268458

ABSTRACT:
A moisture curable, one-part sealant composition comprising a silicone-urethane copolymer is provided. The copolymer is prepared via reaction of an alpha, omega hydroxy terminated siloxane having a molecular weight of 5,000 or less with a polyisocyanate. The copolymer has a free NCO content of greater than about 1 wt. % available for moisture cure upon usage.

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