发明授权
US5470890A Bis-(N-alkylaminocyclohexyl)methanes as curing agents in polyurethane and polyurea flexible foam manufacture 失效
双 - (N-烷基氨基环己基)甲烷作为聚氨酯和聚脲柔性泡沫制造中的固化剂

Bis-(N-alkylaminocyclohexyl)methanes as curing agents in polyurethane
and polyurea flexible foam manufacture
摘要:
Flexible foam resistant to both photochemical and oxidative degradation result from the use of bis(N-alkylaminocyclohexyl)methanes as curing agents for polyisocyanates or polyisocyanate prepolymers. The chain extenders may be used alone or in combination with other polyamines and with polyols. Where the polyisocyanate or polyisocyanate prepolymer is also aliphatic there is outstanding resistance to yellowing.
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