Oxyalkylated addition products from ethylene oxide-propylene oxi

Details Oxyalkylated addition products from ethylene oxide-propylene oxi Oxyalkylated addition products from ethylene oxide-propylene oxi

1981-12-21

1983-12-13

Lieberman, Paul

Compositions

Preservative agents

Anti-corrosion

166268, 252 855R, 252319, 252345, 525523, 525407, B01D 1704, C08L 6300

Patent

active

044204132

ABSTRACT:
Oxyalkylated addition products from ethylene oxide-propylene oxide block polymers and bis-glycidyl ethers, obtained by the addition of ethylene oxide-propylene oxide block polymers of the formula ##STR1## wherein R denotes methyl or ethyl, n and m are numbers which are so chosen that the content of polyethylene oxide groups is 5 to 80% of the molecular weight of the block polymer, and p is a number larger than 10, to bis-glycidyl ethers of the formula ##STR2## wherein the R.sup.1 's can be identical or different and denote hydrogen, C.sub.1 -C.sub.4 -alkyl or halogen, in particular chlorine, A denotes a direct bond, a sulfonyl or cyclohexyl group or a group of the formula ##STR3## R.sup.2 denotes hydrogen, methyl or phenyl, and a denotes an integer from 0 to 10, and subsequent oxyalkylation with propylene oxide or butylene oxide and, if appropriate, ethylene oxide, the amount of propylene oxide or butylene oxide which is added last being 1 to 90% by weight of the total molecule and the amount of ethylene oxide which, optionally, has also been added, being 50% by weight of the total molecule. These addition compounds are used for breaking crude oil emulsions.

REFERENCES:
patent: 2792357 (1957-05-01), DeGroote
patent: 2864806 (1958-12-01), DeGroote
patent: 3544655 (1970-12-01), Booth
patent: 3655815 (1972-04-01), Salyer
patent: 3687894 (1972-09-01), Collings
patent: 4125382 (1978-11-01), O'Brien
patent: 4326968 (1982-04-01), Blair
patent: 4326984 (1982-04-01), Blair

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