Process for the production of polyisocyanate polyaddition produc

Details Process for the production of polyisocyanate polyaddition produc Process for the production of polyisocyanate polyaddition produc

1978-04-07

1979-04-17

Welsh, M. J.

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...

252182, C08G 1838

Patent

active

041502132

ABSTRACT:
The present invention relates to a process for the production of polyisocyanate polyaddition products by reacting organic polyisocyanates with compounds which give off organic diamines under the hydrolytic influence of water and also with water, optionally in the presence of sub-equivalent quantities, based on the NCO-groups present in the reaction mixture, of organic compounds containing isocyanate-reactive hydrogen atoms, wherein polycyclic condensation products of formaldehyde with aliphatic or cycloaliphatic diprimary 1,2-diamines are used as the compounds which give off organic diamines under the hydrolytic influence of water. The present invention also relates to the mixtures preferably used for carrying out this process, containing:

REFERENCES:
patent: 3595839 (1971-07-01), Stokes

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