Sealant compositions

Details Sealant compositions Sealant compositions

C - Chemistry, Metallurgy

08

G

400/3017, 400/76

C08G 63/66 (2006.01) C08G 75/14 (2006.01) C08L 67/02 (2006.01) C08L 81/04 (2006.01)

Patent

CA 1159191

Abstract of the Disclosure A sealant composition based on a mercaptan-terminated liquid polymer, fillers, plasticizer, and curing agent wherein the liquid mercaptan-terminated polymer employed is prepared from a mercapto acid or mercapto acid cater and a polyoxypropylene glycol, the polyoxypropylene glycol having been end-capped with ethylene oxide prior to caterification to give primary alcohol terminal groups. The cured sealant based on the ethylene oxide end-capped polymer exhibits a non-tacky surface, whereas a cured sealant based on a propylene oxide end-capped glycol exhibits a tacky surface.

375060

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