Method for preparing branched polyethylenimine

Details Method for preparing branched polyethylenimine Method for preparing branched polyethylenimine

1982-10-12

1984-08-21

Shaver, Paul F.

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

Organic compounds

Amino nitrogen containing

528422, 528423, C07C 8500

Patent

active

044671156

ABSTRACT:
The present invention relates to the chemistry of polymers and, more specifically, to a method for preparing of branched polyethylenimine.
The method of this invention resides in that a 2-aryl (alkyl)-2-oxazoline is subjected to an isomerizing polymerization with the formation of a poly-N-aroyl(acyl)ethylenimine which is then hydrolyzed and the resulting linear polyethylenimine is alkylated in the presence of .beta.-chlorethylene or .beta.-aminoethylsulphate at a molar ratio of the alkylation agent to the linear polyethylenimine equal to at least 0.5:1 respectively.

REFERENCES:
patent: 2182306 (1939-12-01), Ulrich
patent: 3200106 (1965-08-01), Dickson et al.
patent: 3201472 (1965-08-01), Spivack
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patent: 4143003 (1979-03-01), Haas et al.
patent: 4216307 (1980-08-01), Yuasa et al.
patent: 4316840 (1982-02-01), Ford et al.
patent: 4316841 (1982-02-01), Ford et al.
The Journal of Organic Chemistry, 30, Title page and pp. 2002 and 2003, 1965.
Journal of The Chemical Society, 1956, Title page and pp. 2449 and 2450.

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