Propylene-linked polyethylene polyamines and a process for makin

Details Propylene-linked polyethylene polyamines and a process for makin Propylene-linked polyethylene polyamines and a process for makin

1989-05-30

1991-02-05

Shen, Cecilia

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

Organic compounds

Amino nitrogen containing

544357, 544402, 564491, 564487, C07C 8512, C07C 8520, C07C20900

Patent

active

049906720

ABSTRACT:
This invention relates to propylene-linked polyethylene polyamines and a process for preparing such propylene-linked polyethylene polyamines. These propylene-linked polyethylene polyamines are characterized as having high molecular weight and the amine value is distributed over a wide range of primary, secondary, and tertiary amine functionality.
The propylene-linked polyethylene polyamines are prepared by reacting a polyamine containing an ethylene amine functionality with acrylonitrile or methacrylonitrile to form a cyanoethylated polyamine containing the ethylene linkage and then reductively alkylating the resulting cyanoethylated derivative in the presence of a polyamine containing an ethylene linkage. Typically, a polyethylene polyamine such as diethylenetriamine or triethylene tetramine is reacted with acrylonitrile and then hydrogenated under reductive alkylation conditions.

REFERENCES:
patent: 3700598 (1972-10-01), Plonsker et al.
patent: 4137267 (1979-01-01), Reid et al.
patent: 4547591 (1985-10-01), Brennan et al.
patent: 4552862 (1985-11-01), Larkin
patent: 4721811 (1988-01-01), Sherwin et al.
patent: 4845297 (1989-07-01), Kumoi et al.

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