Process for the preparation of amines, the amines thus...

Details Process for the preparation of amines, the amines thus... Process for the preparation of amines, the amines thus...

C - Chemistry, Metallurgy

07

C

C07C 273/18 (2006.01) C07C 275/00 (2006.01) C07D 295/14 (2006.01) C08G 18/10 (2006.01) C08G 59/50 (2006.01) C08L 63/00 (2006.01)

Patent

CA 2041909

The present invention is directed to a process for the preparation of amines containing urethane and urea groups. The amines are produced by reacting A) isocyanate prepolymers containing urethane groups and in which the isocyanate groups are reversibly blocked with secondary monoamines with B) amines having molecular weights of from 60 to 500, which are at least difunctional and which have a total of at least two primary or secondary amino groups, with splitting off of the secondary monoamine. The invention is also directed to the amines so produced and to the use as a hardener for an epoxide resin.

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