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Title:
LUBRICATING OIL COMPOSITION FOR AUTOMOBILE GEARS AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2020/194548
Kind Code:
A1
Abstract:
[Problem] To provide a lubricating oil composition for automobile gears, which has an excellent balance among shear stability, temperature viscosity characteristics and low-temperature viscosity characteristics at high levels, while having excellent stability of thermal oxidation resistance. [Solution] A lubricating oil composition for automobile gears, which contains a lubricant base oil and a liquid random copolymer of ethylene and an α-olefin, said random copolymer being produced using a specific catalyst, and which is configured such that: the kinematic viscosity at 100°C is 7-30 mm2/s; and the lubricant base oil is composed of a mineral oil that has a kinematic viscosity at 100°C of 2-10 mm2/s, a viscosity index of 105 or more and a pour point of -10°C or less and/or a synthetic oil that has a kinematic viscosity at 100°C of 1-10 mm2/s, a viscosity index of 120 or more and a pour point of -30°C or less.

Inventors:
ABE SHOTA (JP)
Application Number:
PCT/JP2019/013003
Publication Date:
October 01, 2020
Filing Date:
March 26, 2019
Export Citation:
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Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
C10M169/04; C08F4/6592; C08F210/16; C10M101/02; C10M107/02; C10M143/00
Domestic Patent References:
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Foreign References:
US20150266985A12015-09-24
JPH0853683A1996-02-27
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Other References:
"API Publication", April 2002
TOSOH FINECHEM CORPORATION, TOSOH RESEARCH & TECHNOLOGY REVIEW, vol. 47, 2003, pages 55
See also references of EP 3950898A4
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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