Patent ID: 7671145

Claim:
An epoxy-capped polythioether comprising: a reaction product of n moles (i) a dithiol and divinyl ether reaction product; and n+1 moles (ii) a monoepoxy olefin, wherein the dithiol and divinyl ether reaction product was formed by reacting n+1 moles of a dithiol having a structure HS—R 1 —SH and n moles of a divinyl ether having a structure CH 2 ═CH—O—[—R 5 —O—] m —CH═CH 2 , wherein R 1 and R 5 are each independently selected from the group consisting of C 2-6 n-alkylene, C 3-6 branched alkylene, C 6-8 cycloalkylene, C 6-10 alkylcycloalkylene, and —[—(CHR 3 ) p —X—] q —(CHR 3 ) r —, wherein each R 3 is independently selected from H, and —CH 3 , each X is independently selected from O, S, —NH—, and —NR 4 —, R 4 is selected from H, and —CH 3 , p is an integer from 2 to 6, q is an integer from 1 to 5, r is an integer from 2 to 10, and m is an integer from 1 to 10.