Document Type and Number:
Japanese Patent JPH0141676
Kind Code:
B2
Abstract:
Lubricating oils suitable for use in refrigeration equipment in admixture with fluorinated hydrocarbon refrigerants are produced by solvent extraction of naphthenic lubricating oil base stocks, cooling the resulting extract mixture, optionally with the addition of a solvent modifier, to form a secondary raffinate and a secondary extract, and recovering a dewaxed oil fraction of lowered pour point from the secondary raffinate as a refrigeration oil product. The process of the invention obviates the need for a separate dewaxing operation, such as dewaxing with urea, as conventionally employed for the production of refrigeration oils.
Inventors:
AUIRINO SEKUEIRA JUNIA
RARUFU HOORU KIESURUUKU
HAWAADO JIIN PUREETO
RARUFU HOORU KIESURUUKU
HAWAADO JIIN PUREETO
Application Number:
JP5129381A
Publication Date:
September 06, 1989
Filing Date:
April 07, 1981
Export Citation:
Assignee:
TEXACO DEVELOPMENT CORP
International Classes:
C10M101/02; C10G21/00; C10G53/04; C10G53/10; C10N40/06; C10N40/30
Next Patent: JPH0141677