Solvent dewaxing waxy hydrocarbon oils using dewaxing aid

Details Solvent dewaxing waxy hydrocarbon oils using dewaxing aid Solvent dewaxing waxy hydrocarbon oils using dewaxing aid

1981-01-30

1983-03-22

Douglas, Winston A.

Mineral oils: processes and products

Paraffin wax; treatment or recovery

Separation of paraffin from oil

208 35, 208 38, C10G 7306, C10G 7308

Patent

active

043774679

ABSTRACT:
An improved dewaxing aid for solvent dewaxing processes comprising a mixture of (a) lithium isostearate and (b) a polymer of an ester of at least one aliphatic alcohol with methacrylic acid or acrylic acid having an average molecular weight ranging from between about 300,000 to 2,000,000. The lithium isostearate, when combined with the acrylic polymer, synergistically improves the efficiency of wax separation. This has been found to be especially useful for dewaxing heavy petroleum oil fractions, such as bright stocks.

REFERENCES:
patent: 1993396 (1935-03-01), Bennett
patent: 2008674 (1935-07-01), Berne-Allen
patent: 2132354 (1938-10-01), Knowles et al.
patent: 2155645 (1939-04-01), Evans et al.
patent: 2158358 (1939-05-01), Evans
patent: 2178328 (1939-10-01), Story
patent: 2181638 (1939-11-01), Cook
patent: 2260994 (1941-10-01), Knowles
patent: 2698279 (1954-12-01), Mondria
patent: 2791539 (1957-05-01), Mondria et al.
patent: 3458430 (1969-07-01), Henselman et al.

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