Blocked 1,8-diazabicyclo 5.4.0 undec-7-ene bicarbonate catalyst for aerospace sealants

摘要

Disclosed are compositions comprising polythioether prepolymers useful as aerospace sealants, polyepoxides, and sulfur-containing prepolymers such as blocked 1,8-diazabicyclo [5.4.0] undec-7-ene bicarbonate catalysts. Has been. The composition exhibits a long working time and the cure rate can be adjusted for a particular application.