Moisture curable silicone-urethane copolymer sealants

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

C - Chemistry, Metallurgy

09

K

C09K 3/10 (2006.01) C08G 18/10 (2006.01) C08G 18/61 (2006.01)

Patent

CA 2121843

2121843 9308227 PCTABS00021 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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