Branched, quaternary polyoxyalkylene copolyesters, a process for

Details Branched, quaternary polyoxyalkylene copolyesters, a process for Branched, quaternary polyoxyalkylene copolyesters, a process for

1987-11-12

1989-12-05

Barr, Josephine

Compositions

Preservative agents

Anti-corrosion

252341, 252358, B01D 1700, B01D 1904

Patent

active

048851116

ABSTRACT:
Branched, quaternary polyoxyalkylene copolyesters are described which are prepared by esterifying an oxyalkylated primary fatty amine and an at least trihydric oxyalkylated alkanol or an oxyalkylated polyamine using a dicarboxylic acid or a dicarboxylic anhydride with polycondensation, and quaternizing the esterification product obtained using ethylene oxide or propylene oxide in the presence of a mineral acid or carboxylic acid. The novel, branched, quaternary polyoxyalkylene copolyesters are used as demulsifiers and corrosion inhibitors in the processing of crude oil emulsions.

REFERENCES:
patent: 3009884 (1961-11-01), Monson et al.

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