Simplified process for the production of polyamines by the alkal

Details Simplified process for the production of polyamines by the alkal Simplified process for the production of polyamines by the alkal

1982-07-15

1985-06-25

Ford, John M.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

560 26, 560158, 560 19, 564 38, 564 32, 564 47, 564385, 564415, 564489, 564488, 564468, 564393, 564414, C07D25134, C07C12506, C07C12724, C07C12715

Patent

active

045255903

ABSTRACT:
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.

REFERENCES:
patent: 2888439 (1959-05-01), Simons
patent: 3044989 (1962-07-01), Shivers
patent: 3184502 (1965-05-01), Mueller et al.
patent: 3385829 (1968-05-01), Heydkamp et al.
patent: 3625871 (1971-12-01), Traubel et al.
patent: 3865791 (1975-02-01), Brinkmann et al.
patent: 4163831 (1979-08-01), Gessell
patent: 4224417 (1980-09-01), Hajek et al.
patent: 4386218 (1983-05-01), Rasshofer et al.
"The Condensed Chemical Dictionary, 8th Ed., p. 78, Van Nostrand pub., New York.

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