Moisture curable silicone-urethane copolymer sealants
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United States of America Patent
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-
Jul 5, 1994
Issued Date -
N/A
app pub date -
Dec 14, 1992
filing date -
Oct 22, 1991
priority date (Note) -
Expired
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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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