3,3'-(Ureylenedimethylene)bis(3,5,5-trimethylcyclohexyl) diisocyanate 55525-54-7 EINECS 259-695-6 N,N'-Bis(5-isocyanato-1,3,3-trimethylcyclohexylmethyl)urea Urea, N,N'-bis((5-isocyanato-1,3,3-trimethylcyclohexyl)methyl)-