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Title:
LUBRICATING OIL COMPOSITION AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2020/194549
Kind Code:
A1
Abstract:
The present invention provides a lubricating oil composition containing a polymer for improving viscosity, the polymer having little decrease in viscosity due to shear, keeping viscosity elevation at low temperatures low, and having exceptional low-temperature characteristics. The present invention is a lubricating oil composition characterized by containing: 30-90 wt% of a liquid random copolymer (A) of ethylene and an α-olefin, the copolymer being produced by through specific method; and 10-70 wt% of a lubricating oil base comprising one or more components selected from specific synthetic oils (B) or mineral oils (C) (where the total of components (A), (B), and (C) is 100 wt%).

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Inventors:
ABE SHOTA (JP)
Application Number:
PCT/JP2019/013004
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; C10M101/02; C10M105/32; C10M107/02; C10M143/00; C10M171/02; C10N20/00; C10N20/02; C10N20/04; C10N30/02; C10N30/06; C10N30/10; C10N40/04
Domestic Patent References:
WO2000034420A12000-06-15
Foreign References:
JP2016069406A2016-05-09
US20150266985A12015-09-24
US4960878A1990-10-02
US5041584A1991-08-20
KR100551147B12006-02-13
JPH01501950A1989-07-06
JPH03179005A1991-08-05
JPH03179006A1991-08-05
JPH03207703A1991-09-11
JPH03207704A1991-09-11
US5321106A1994-06-14
JP2004051676A2004-02-19
US3909432A1975-09-30
Other References:
TOSOH FINECHEM CORPORATION, TOSOH RESEARCH & TECHNOLOGY REVIEW, vol. 47, 2003, pages 55
See also references of EP 3950899A4
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
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