news N,N,N’,N”,N”-pentamethyldipropylene triamine: a highly efficient and environmentally friendly polyurethane foaming catalyst N,N,N’,N”,N”-pentamethyldipropylene triamine: a highly efficient and environmentally friendly polyur... 03/1217N N”-pentamethyldipropylene triamine: a highly efficient and environmentally friendly polyurethane foaming catalyst