trimethylaminoethyl piperazine amine catalyst: a comprehensive overview of its applications in marine and offshore insulation systems abstract: trimethylaminoethyl piperazine (tmep), a tertiary amine containing both a piperazine ring and a tertiary amine group, exhibits exceptional catalytic activity in polyurethane (pu) and polyisocyanurate (pir) foam formulations. this article provides a comprehensive overview of tmep’s applications, particularly...