发明授权
US5912319A Compositions and method for producing fuel resistant liquid polythioether polymers with good low temperature flexibility 失效
用于生产具有良好低温柔韧性的耐燃液体聚硫醚聚合物的组合物和方法

Compositions and method for producing fuel resistant liquid
polythioether polymers with good low temperature flexibility
摘要:
A polythioether includes a structure having the formula I--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 --whereinR.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.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 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, --�(--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,X denotes 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 0 to 5, andr is an integer from 2 to 10.The polythioether is a liquid at room temperature and pressure.
公开/授权文献
信息查询
0/0