Compositions – Preservative agents – Anti-corrosion
Patent
1992-11-04
1995-08-29
Geist, Gary L.
Compositions
Preservative agents
Anti-corrosion
252358, 210708, B01D 1704
Patent
active
054457653
ABSTRACT:
Petroleum emulsion breakers based on alkoxylated polyethyleneimines are obtained by reacting polyethyleneimine with a molecular weight of 2,500-35,000 with 5-40 moles each of propylene oxide and ethylene oxide per ethyleneimine unit in the polyethyleneimine and are used for the demulsification of petroleum emulsions at from 10.degree. C. to 130.degree. C.
REFERENCES:
patent: 3454380 (1969-07-01), Dickson et al.
patent: 3684735 (1972-08-01), Oppenlaender et al.
patent: 3893615 (1975-07-01), Johnson
patent: 3907701 (1975-09-01), Liebold et al.
patent: 3997479 (1976-12-01), Shimojo et al.
patent: 4333947 (1982-06-01), Karjalainen et al.
patent: 4537701 (1985-08-01), Oppenlaender et al.
Derwent Abstract AN 73-79941U/52 (corresponding to DE 2 227 546).
Derwent Abstract AN 85-203991/34 (corresponding to DE 3 404 538).
Elfers Guenther
Oppenlaender Knut
Sager Wilfried
Vogel Hans-Henning
BASF - Aktiengesellschaft
Geist Gary L.
Metzmaier Daniel S.
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