| 摘要 |
New bis-(1- gamma -aminopropyl-hydantoinyl-3)-alkanes, for example 1,6-bis-(1'-( gamma -aminopropyl)-5',5'-dimethylhydantoinyl-3')-hexane or beta , beta '-bis-(1-(3'-aminopropyl)-5,5-dimethyl-hydantoinyl-3)-diethyl ether, and their use as curing agents in curable moulding, coating and adhesive compositions which contain a polyepoxide compound, for example a liquid polyglycidyl ether of bisphenol A. Curing can be carried out at relatively low temperatures, for example at 40 DEG C. The new type of curing agent bridges, in respect of its gradation of reactivity, a gap between aliphatic polyamines and cycloaliphatic polyamines. The new curing agents furthermore have the advantage relative to the aromatic polyamines of being non-toxic.
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