DIFF Subgroup
C08G 18/2045 Full Title
Polymeric products of isocyanates or isothiocyanates > with compounds having active hydrogen > Processes > Catalysts (catalysts in general B01J) > containing secondary or tertiary amines or salts thereof > Heterocyclic amines; Salts thereof
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.