| 摘要 |
Compositions comprising polymercaptan-terminated polymers such as poly(oxyalkylene)-polyester-poly(monosulfide)-polythiols having an average of more than two mercapto groups per molecule, sulfur as the curing agent, and an alkaline earth metal oxide curing agent accelerator are curable to sealant or coating compositions at ambient temperatures. The poly(oxyalkylene)-polyester-poly(monosulfide)-polythiols comprise the reaction product of (a) a mercapto-alkanoic acid, (b) a thiodialkanoic acid, and (c) a poly(oxyalkylene)polyol.
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