Patent ID: 6172179
Filing Date: 2001-01-09
Classification: C08G,C08L

Abstract:
A polythioether comprising a structure having the formula:--R.sup.1 --[--S--(CH.sub.2).sub.2 --O--[--R.sup.2 --O--].sub.m --(CH.sub.2).sub.2 --S--R.sup.1 --].sub.n --(--[R.sup.3 ].sub.y --R.sup.4).sub.2whereinR.sup.1 denotes a C.sub.2-6 n-alkylene, C.sub.3-6 branched alkylene, C.sub.6-8 cycloalkylene or C.sub.6-10 alkylcycloalkylene group, --[(--CH.sub.2 --).sub.p --X--].sub.q --(--CH.sub.2 --).sub.r --, or --[(--CH.sub.2 --).sub.p --X--].sub.q --(--CH.sub.2 --).sub.r -- in which at least one --CH.sub.2 -- unit is substituted with a methyl group,R.sup.2 denotes a methylene, C.sub.2-6 n-alkylene, C.sub.2-6 branched alkylene, C.sub.6-8 cycloalkylene or C.sub.6-10 alkylcycloalkylene group, --[(--CH.sub.2 --).sub.p --X--].sub.q --(--CH.sub.2 --).sub.r --, --[(--CH.sub.2 --).sub.p --X--].sub.q --(--CH.sub.2 --).sub.r -- in which at least one --CH.sub.2 -- is substituted with a methyl group,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,y is 0 or 1,R.sup.3 denotes a single bond when y=0 and --S--(CH.sub.2).sub.2 --[--O--R.sup.2 --].sub.m --O-- when y=1,R.sup.4 denotes --SH or --S--(--CH.sub.2 --).sub.2+s --O--R.sup.5 when y=0 and --CH.dbd.CH.sub.2 or --(CH.sub.2 --).sub.2 --S--R.sup.5 when y=1,s is an integer from 0 to 10,R.sup.5 denotes C.sub.1-6 n-alkyl which is unsubstituted or substituted with at least one --OH or --NHR.sup.7 group, andR.sup.7 denotes H or a C.sub.1-6 n-alkyl group said polythioether being a liquid at room temperature and pressure.