74045-37-7 N,N,N',N',N'',N'',N''',N'''-octamethyl-1,3-Disilacyclobutane-1,1,3,3-tetramine 68738-90-9 Hexanedioic acid, polymer with 5-amino-1,3,3-trimethylcyclohexanemethanamine, 1,4-butanediol, 2,2-dimethyl-1,3-propanediol and 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane