Purification of polyamines derived from polyhydroxyl compounds

Details Purification of polyamines derived from polyhydroxyl compounds Purification of polyamines derived from polyhydroxyl compounds

1990-05-14

1991-05-28

Hollrah, Glennon H.

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

Organic compounds

Amino nitrogen containing

564479, 564491, 564498, 564505, C07C20900

Patent

active

050196537

ABSTRACT:
Disclosed is a method for purification of polyamines which comprises contacting said polyamines with a treating agent selected from the group consisting of oxides, hydroxides or alkoxides of elements from the group consisting of silicon or Group IIA, IIIA, IIB, IIIB, IVB or VB at a temperature of about 150.degree. C. to 250.degree. C. and a pressure of subatomspheric to 10 atmospheres for a period of time sufficient to lower the hydroxyl impurity level of said amines.

REFERENCES:
patent: 3580952 (1971-05-01), Moschel et al.
patent: 3755447 (1973-08-01), Klemann et al.
patent: 4324917 (1982-04-01), McConnell
patent: 4532354 (1985-07-01), Cornils et al.
patent: 4731165 (1988-03-01), Niebruegge et al.
patent: 4737243 (1988-04-01), Siml et al.

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