HIGH STRENGTH POLYMERS AND AEROSPACE SEALANTS THEREFROM

摘要

A polythioether is provided of the formula (1) wherein R<1> is H, C1-6 alkyl, C1-6 alkyl alcohol, C1-6 alkyl substituted with at least one of: -(CH2)2-O-Y-O-CHCH2 or formula (2), -NHR<5> wherein r<5> is a C1-6 alkyl, R<2> is C2-6 alkyl, C6-8 cycloalkyl, C6-10alkylcycloalkyl, -[-(CH2)r-Q-]s-(CH2)t-, or C1-2 alkyl substituted forms thereof, wherein r is an integer value from 2 to 8, Q is a heteroatom selected from the group consisting of: O, S, -NH- and -NCH3-, s in an integer value from 1 to 5, and t is an integer value from 2 to 10, R<3> is H or C1-4 alkyl, R<4> is -CH2- or R<2>, M is a C1-10 alkyl, C6-20 aryl, C6-20 aryl substituted with at least one C1-8 alkyl group, or a N or O heteroatom, Y is C2-20 alkyl, C6-20 cycloalkyl, C6-10 alkylcycloalkyl, or -[-(CH2)r-Q-]s-(-CH2-)t-, n is an integer value from 1 to 60, m is an integer value from 1 to 60, an p is an integer value from 1 to 10, wherein the polythioether has a viscosity at 20 DEG C of less than 1000 poise.