High strength polymers and aerospace sealants therefrom

Abstract

A polythioether is provided of the formula wherein R1 is H, C1-6 alkyl, C1-6 alkyl alcohol, C1-6 alkyl substituted with at least one of: —NHR5 wherein R5 is a C1-6 alkyl, R2 is C2-6 alkyl, C6-8 cycloalkyl, C6-10 alkylcycloalkyl, —[—(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 is an integer value from 1 to 5, and t is an integer value from 2 to 10, R3 is H or C1-4 alkyl, R4 is —CH2— or R2, 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, and p is an integer value from 1 to 10, wherein the polythioether has a viscosity at 20° C. of less than 1000 poise.

Dependencies are inferred from the claim text.