High strength polymers and aerospace sealants therefrom

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 75/00 (2006.01) C08G 59/66 (2006.01) C08G 75/02 (2006.01) C08G 75/04 (2006.01) C08L 63/00 (2006.01)

Patent

CA 2402112

A polythioether is provided of the formula (1) wherein R1 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), -NHR5 wherein r5 is a C1-6 alkyl, R2 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, 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, an p is an integer value from 1 to 10, wherein the polythioether has a viscosity at 20 ~C of less than 1000 poise.

L'invention concerne un polythioéther représenté par la formule (1) dans laquelle R?1¿ est H, un alkyle C¿1-6?, un alcool d'alkyle C¿1-6?, un alkyle C¿1-6? substitué par au moins un élément parmi: -(CH¿2?)¿2?-O-Y-O-CHCH¿2? ou la formule (2), -NHR?5¿, R?5¿ étant un alkyle C¿1-6?, R?2¿ est un alkyle C¿2-6?, un cycloalkyle C¿6-8?, un alkylcycloalkyle C¿6-10?, -[-(CH¿2?)¿r?-Q-]¿s?-(CH¿2?)¿t?-, ou des formes substituées d'alkyle C¿1-2?, r étant une valeur entière de 2 à 8, Q étant un hétéroatome sélectionné dans le groupe comprenant O, S, -NH- et -NCH¿3?-, s étant une valeur entière de 1 à 5, et t une valeur entière de 2 à 10, R?3¿ est H ou un alkyle C¿1-4?, R¿4? est -CH¿2?- ou R?2¿, M est un alkyle C¿1-10?, un aryle C¿6-20?, un aryle C¿6-20? substitué par au moins un groupe alkyle C¿1-8?, ou un hétéroatome N ou O, Y est un alkyle C¿2-20?, un cycloalkyle C¿6-20?, un alkylcycloalkyle C¿6-10?, ou -[-(CH¿2?)¿r?-Q-]¿s?-(CH¿2?-)¿t?-, n est une valeur entière de 1 à 60, m est une valeur entière de 1 à 60, et p est une valeur entière de 1 à 10, le polythioéther possédant une viscosité à 20 ·C inférieure à 1000 poises.

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