Cycloaminals and a process for their preparation

Details Cycloaminals and a process for their preparation Cycloaminals and a process for their preparation

1978-08-21

1983-09-13

Rizzo, Nicholas S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

528 45, 528 73, 544296, 544335, 548323, 548336, 548341, 260239BC, C07D23904

Patent

active

044043791

ABSTRACT:
The present invention is concerned with a new class of compounds prepared by reacting cyclic aminals of the formula ##STR1## with polyisocyanates of the formula R.sub.5 (NCO).sub.m+n to yield ##STR2## and with this process for obtaining said compounds, as well as the use of such compounds in polyurethane chemistry. If such compounds are free of isocyanates (n=0) they are useful as latent cross-linkers or hardeners activatable by heat or moisture. If such compounds carry free isocyanate groups (n=1 or 2) there are useful as synthetic resin precursors. In the above formulae

REFERENCES:
patent: 3591590 (1971-06-01), Haug et al.
patent: 3661923 (1972-05-01), Emmons et al.
patent: 3723454 (1973-03-01), Ost et al.
patent: 3743626 (1973-07-01), Emmons
patent: 3778439 (1973-12-01), Habermeier
patent: 3864335 (1975-02-01), Emmons
patent: 4002601 (1977-01-01), Hajek et al.
Saunders et al., "Polyurethanes: Chemistry and Technology," Pt. I, 1962, pp. 76-79, 204-208.
Grant, Hackh's Chemical Dictionary, 4th Ed., 1969, McGraw-Hill, New York, pp. 331.

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