Process for the preparation of amines, the amines thus obtained

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

1991-05-07

1993-06-15

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 61, 528 64, 528121, 528122, 528123, 528124, 528407, 528418, 525528, 560 25, 560115, 560158, 564 59, C08G 1832, C08G 1880, C08F28310, C07C26906

Patent

active

052199754

ABSTRACT:
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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