Patent ID: 7858703

Claim:
A polythioether comprising: R 4 —(R 3 ) y —S—R 1 —[—S—(CH 2 ) p —O—(—R 2 —O—) m —(CH 2 ) q —S—R 1 —] n —S(R 3 ) y —R 4 wherein R 1 is selected from C 2-10 n-alkylene, C 2-6 branched alkylene, C 6-8 cycloalkylene or C 6-10 alkylcycloalkylene group, heterocyclic, —[(—CH 2 ) p —X] q —(—CH 2 ) r — group, and —[(—CH 2 ) p —X] q —(—CH 2 ) r — group in which at least one —CH 2 — unit is substituted with a methyl group; R 2 is selected from C 2-10 n-alkylene, C 2-6 branched alkylene, C 6-8 cycloalkylene, C 6-14 alkylcycloalkylene group, heterocyclic, —[(—CH 2 ) p —X] q —(—CH 2 ) r — group; X is selected from O, S and —NR 6 ; R 3 is a single bond when y=0 and —[—(CH 2 ) 2 —[OR 2 —] m —O— when y=1; R 4 is H or —(—CH 2 —) 2+8 —O—R 5 when y=0 and —CH═CH 2 or —(CH 2 —) 2 —S—R 6 when y=1; R 5 is selected from C 1-6 alkyl group which is unsubstituted or substituted with at least one —OH or —NHR 7 group; R 6 is selected from H or methyl; R 7 is H or a C 1-6 n-alkyl group; m is an independently selected integer from 1 to 50; n is an independently selected integer from 1 to 60; p is an independently selected integer from 2 to 6; q is an independently selected integer from 1 to 5; r is an independently selected integer from 2 to 10; s is an integer from 0 to 10; and y is or 1.