Patent ID: 8901256

Claim:
A polythioether comprising: (a) a backbone comprising a structure of formula (I): —R 1 -[-S—(CH 2 ) 2 —O-[-R 2 —O-] m -(CH 2 ) 2 —S—R 1 ] n — (I) wherein: (i) each R 1 is independently selected from a C 2-10 n-alkylene group, a C 2-6 branched alkylene group, a C 6-8 cycloalkylene group, a C 6-10 alkylcycloalkylene group, a heterocyclic group, a -[(-CH 2 -) p -X-] q -(CH 2 ) r — group, and a -[(-CH 2 -) p -X-] q -(CH 2 ) r — group in which at least one —CH 2 — unit is substituted with a methyl group; (ii) each R 2 is independently selected from a C 2-10 n-alkylene group, a C 2-6 branched alkylene group, a C 6-8 cycloalkylene group, a C 6-14 alkylcycloalkylene group, a heterocyclic group, and a -[(-CH 2 -) p -X-]q-(CH 2 )r- group; (iii) each X is independently selected from O, S, and a —NR 6 — group, in which R 6 is selected from H and a methyl group; (iv) m ranges from 1 to 50; (v) n is an integer ranging from 1 to 60; (vi) p is an integer ranging from 2 to 6; (vii) q is an integer ranging from 1 to 5; and (viii) r is an integer ranging from 2 to 10; and (b) at least two groups, per molecule, having the formula: wherein R 3 , R 4 , and R 5 are each independently selected from a C 1-6 n-alkyl group, a C 1-6 branched alkyl group, a substituted C 1-6 n-alkyl group, and a phenyl group.