HEAT-RESISTANT LUBRICATING OIL COMPOSITION

Title:

HEAT-RESISTANT LUBRICATING OIL COMPOSITION

Document Type and Number:

WIPO Patent Application WO/1997/000308

Kind Code:

A1

Abstract:

A heat-resistant lubricating oil composition prepared by mixing a lube base oil comprising an organic acid ester or a mixture thereof with polyphenyl ether or organopolysiloxane with 0.05 to 10 wt.% of a polyphenyl thio ether of general formula (I) as an antioxidant, wherein R1, R2 and R3 are each hydrogen or C1-C24 hydrocarbyl; x, y and z are each an integer of 1 to 4; and m is an integer of 0 to 3; another heat-resistant lubricating oil composition containing, as the base oil, a mixture comprising 10 to 90 wt.% of the above lube base oil and 90 to 10 wt.% of the above polyphenyl thio ether; and a process for preparing the above polyphenyl thio ether. The above compositions exhibit high-level resistances to heat and oxidation under high-temperature conditions and therefore are fit for use under severe conditions, e.g., in jet engine, gas turbine or the like.

Inventors:

NAKANISHI HIROSHI (JP)
ONODERA KO (JP)
KANBARA MAKOTO (JP)
KOBORI ATSUHISA (JP)
NAKAMURA YOSHINOBU (JP)

Application Number:

PCT/JP1996/001640

Publication Date:

January 03, 1997

Filing Date:

June 14, 1996

Export Citation:

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Assignee:

TONEN CORP (JP)
NAKANISHI HIROSHI (JP)
ONODERA KO (JP)
KANBARA MAKOTO (JP)
KOBORI ATSUHISA (JP)
NAKAMURA YOSHINOBU (JP)

International Classes:

C07C319/14; C07C319/28; C07C321/30; C10M135/28; C10M169/04; C10N30/08; C10N30/10; C10N40/12; (IPC1-7): C10M135/28; C07C321/30; C10M169/04

Foreign References:

JPS469891B1
JPH07126680A	1995-05-16

Other References: