초록

The polythioether is a liquid at room temperature and pressure.

대표청구항 ▼

[ What is claimed is:] [1.]1. A polymerizable composition comprising(i) about 30 to about 90 wt % of at least one polythioether, said at least one polythioether comprising a structure having the formula 1R.sup.1 denotes a divalent C.sub.2-6 n-alkyl, C.sub.3-6 branched alkyl, C.sub.6-8 cycloalkyl or

[ What is claimed is:] [1.]1. A polymerizable composition comprising(i) about 30 to about 90 wt % of at least one polythioether, said at least one polythioether comprising a structure having the formula 1R.sup.1 denotes a divalent C.sub.2-6 n-alkyl, C.sub.3-6 branched alkyl, C.sub.6-8 cycloalkyl or C.sub.6-10 alkylcycloalkyl group, --[(--CH.sub.2 --).sub.p --X--].sub.q --(--CH.sub.2 --).sub.r --, or --[(--CH.sub.2 --).sub.p --X--].sub.g --(--CH.sub.2 --).sub.r -- in which at least one --CH.sub.2 -- unit is substituted with a methyl group,R.sup.2 denotes methylene, a divalent C.sub.2-6 n-alkyl, C.sub.2-6 branched alkyl C.sub.6-8 cycloalkyl or C.sub.6-10 alkylcycloalkyl group, or --[(--CH.sub.2 --).sub.p --X--].sub.q --(--CH.sub.2 --).sub.r --,X is one selected from the group consisting of O, S and --NR.sup.6 --.R.sup.6 denotes H or methyl,m is a rational number from 0 to 10,n is an integer from 1 to 60,p is an integer from 2 to 6,q is an integer from 1 to 5, andr is an integer from 2 to 10,said at least one polythioether being a liquid at room temperature and pressure, d at least one polythioether having a glass transition temperature not higher than -55 C,(ii) a curing agent in an amount from about 90 to about 150% of stoichiometric based on the amount of at least one polythioether, and(iii) about 5 to about 60 wt % of a filler, h all wt % being based on the total weight of non-volatile components of the composition,wherein said composition is curable at a minimum temperature of 0 C.