CPC Subgroup
C08G 18/20 Heterocyclic amines; Salts thereof
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
4 direct subcodes
Child Classifications
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