Curable polyene-polythiol compositions

Claim 1

An article comprising two substrates having therebetween a curable composition which on curing becomes a solid crosslinked polythioether adhesive comprising 1. A polyene of the formula: ##STR22## wherein A and B are polyvalent organic radical members free of reactive carbon to carbon unsaturation and are independently selected from the group consisting of aryl, substituted aryl, aralkyl, substituted aralkyl, cycloalkyl, substituted cycloalkyl, alkyl and substituted alkyl containing 1 to 36 carbon atoms and mixtures thereof, said group members can be connected by a chemically compatible linkage selected from the group consisting of --O--, --S--, carboxylate, carbonate, carbonyl, urethane and substituted urethane, urea and substituted urea, amide and substituted amide, amine and substituted amine and hydrocarbon; Z is a divalent chemically compatible linkage selected from the group consisting of ##STR23## --O-- and --S--; X is a member selected from the group consisting of (a) --(CH 2 ) d --CR'=CHR, (b) --O--(CH 2 ) d --CR'=CHR, (c) --S--(CH 2 ) d --CR'=CHR, (d) --(CH 2 ) d --C.tbd.CR, (e) --O--(CH 2 ) d --C.tbd.CR, (f) --S--(CH 2 ) d --C.tbd.CR; and mixtures thereof; where R and R' each are independently selected from the group consisting of hydrogen and methyl radicals; d, p and q are each integers from 0 to 1; m and n are each integers of at least 1; with m + n from 2 to 22 and r at least 1, and y from 1 to 10; and 2.