Patent ID: 8871896

Claim:
A polythioether adduct comprising at least two terminal Michael acceptor groups, wherein, wherein the polythioether adduct is selected from a polythioether adduct of Formula (3), a polythioether adduct of Formula (3a), and a combination thereof: R 6 —S—R 1 —[—S—(CH 2 ) p —O—(R 2 —O) m —(CH 2 ) 2 —S—R 1 —] n —S—R 6 (3) {R 6 —S—R 1 —[—S—(CH 2 ) p —O—(R 2 —O) m —(CH 2 ) 2 —S—R 1 —] n —S—V′—} z B (3a) wherein: each R 1 independently is selected from C 2-10 alkanediyl, C 6-8 cycloalkanediyl, C 6-10 alkanecycloalkanediyl, C 5-8 heterocycloalkanediyl, and —[(—CHR 3 —) s —X—] q —(—CHR 3 —) r —, wherein: s is an integer from 2 to 6; q is an integer from 1 to 5; r is an integer from 2 to 10; each R 3 is independently selected from hydrogen and methyl; and each X is independently selected from —O—, —S—, and —NHR—, wherein R is selected from hydrogen and methyl; each R 2 is independently selected from C 1-10 alkanediyl, C 6-8 cycloalkanediyl, C 6-14 alkanecycloalkanediyl, and —[(—CHR 3 —) s —X—] q —(—CHR 3 —) r —, wherein s, q, r, R 3 , and X are as defined for R 1 ; m is an integer from 0 to 50; n is an integer from 1 to 60; p is an integer from 2 to 6; B represents a core of a z-valent, vinyl-terminated polyfunctionalizing agent B(—V) z wherein: z is an integer from 3 to 6; and each V is a group comprising a terminal vinyl group; and each —V′— is derived from the reaction of —V with a thiol; and each R 6 has the structure of Formula (2): —CH 2 —C(R 4 ) 2 —S(O) 2 —C(R 4 ) 2 ═CH 2 (2) wherein each R 4 is independently selected from hydrogen and C 1-3 alkyl.