Patent ID: 8143370

Claim:
A composition for forming a sealant, the composition comprising: a silane-terminated polythioether component represented by (Y a A b )SiR 4 Z′—R′—Z′R 4 Si(Y a A b ) wherein: R′ is a polythioether chain having at least one —C—S—C— linkage in its backbone and wherein the backbone is free of S—S linkages and essentially free of ester linkages, Y is a hydrolyzable and condensable functional group, A is selected from the group consisting of C1 to C4 hydrocarbon functional groups, Z′ is R 4 is a C 1 to C 3 hydrocarbon chain; R 5 is hydrogen or a hydrocarbon chain; and a and b are each an integer ranging from 0 to 3, and the sum of a and b is 3; a catalyst; and a filler.