Japanese Patent JPH0258260

B2

The invention relates to an improved process for the production of polyamines containing urethane and/or urea and/or biuret and/or isocyanurate groups and, preferably, also alkylene ether, carbonate and/or acetal groups by the alkaline hydrolysis of corresponding compounds containing terminal aliphatic and/or aromatic isocyanate groups. To this end, the compounds containing terminal NCO-groups, preferably NCO-preadducts, are converted by means of selected bases into the carbamates and neutralized by introduction into equivalent quantities of acid or by the simultaneous introduction of the components in equivalent quantities into a reaction vessel, after which the polyamines are directly isolated by methods known per se. The invention also relates to the use of the polyamines obtained by the process for the production of polyurethanes.

JPS52102878	MANUFACTURE OF BISS OR TRISSGUANYLHYDRAZONIUM SALTS
JP6349943	Method for purifying compounds and method for producing polymer compounds

UERUNAA RASUHOOFUAA
KURAUSU KEENITSUHI
HORUGAA MAIBORUKU
UARUTAA METSUKERU
ARUMIN TSUENAA

JP12975382A

December 07, 1990

July 27, 1982

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BAYER AG

C07D251/34; C07B61/00; C07C67/00; C07C213/02; C07C239/00; C07C265/02; C07C265/12; C07C269/02; C07C271/20; C07C271/46; C07C273/18; C07C275/00; C07C275/30; C07C275/40; C07C275/62; C08G18/00; C08G18/10; C08G18/50; C08G18/64; C08G18/83

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