| 摘要 |
<p>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.</p> |
