Title:
LUBRICATING OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2023/054440
Kind Code:
A1
Abstract:
The purpose of the present invention is to obtain a lubricating oil composition that has particularly excellent viscosity characteristics at a temperature of as low as -35°C and thus ensures a viscosity required at high temperature, that inhibits an increase in low-temperature viscosity, and that also has excellent storage stability in a low-temperature environment. The present invention pertains to a lubricating oil composition containing a copolymer (A) and a base oil (B), and characterized in that the copolymer (A) satisfies requirement (a-1), and the content ratio of the copolymer (A) and the base oil (B) is such that the copolymer (A) is contained in a range of 0.1-50 parts by mass with respect to a total of 100 parts by mass of the copolymer (A) and the base oil (B). (a-1) The copolymer (A) is formed between 4-methyl-1-pentene and an α-olefin having 20 or more carbon atoms but excluding 4-methyl-1-pentene, and contains not less than 1 mol% but less than 30 mol% of a structural unit derived from 4-methyl-1-pentene with respect to all structural units.
More Like This:
Inventors:
UEKUSA TAKAYUKI (JP)
INOMATA KIYOHIDE (JP)
UDAGAWA AKIHIRO (JP)
YAMAMOTO SHUHEI (JP)
INOMATA KIYOHIDE (JP)
UDAGAWA AKIHIRO (JP)
YAMAMOTO SHUHEI (JP)
Application Number:
PCT/JP2022/036093
Publication Date:
April 06, 2023
Filing Date:
September 28, 2022
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
C10M169/04; C10M143/04; C10M143/08; C10M101/02; C10N30/00; C10N30/02; C10N40/04; C10N40/25; C10N40/26
Domestic Patent References:
WO2018124070A1 | 2018-07-05 | |||
WO2021039818A1 | 2021-03-04 | |||
WO2018124070A1 | 2018-07-05 | |||
WO2001053369A1 | 2001-07-26 | |||
WO2001027124A1 | 2001-04-19 | |||
WO2014050817A1 | 2014-04-03 | |||
WO2001056968A1 | 2001-08-09 |
Foreign References:
US3265622A | 1966-08-09 | |||
JP2013506036A | 2013-02-21 | |||
JPH03193796A | 1991-08-23 | |||
JPH0241303A | 1990-02-09 | |||
US2501731A | 1950-03-28 | |||
US2616905A | 1952-11-04 | |||
US2616911A | 1952-11-04 | |||
US2616925A | 1952-11-04 | |||
US2777874A | 1957-01-15 | |||
US3256186A | 1966-06-14 | |||
US3384585A | 1968-05-21 | |||
US3365396A | 1968-01-23 | |||
US3320162A | 1967-05-16 | |||
US3318809A | 1967-05-09 | |||
US3488284A | 1970-01-06 | |||
US3629109A | 1971-12-21 | |||
US6200936B1 | 2001-03-13 | |||
US6310009B1 | 2001-10-30 | |||
US4234435A | 1980-11-18 | |||
US3172892A | 1965-03-09 | |||
US3381022A | 1968-04-30 | |||
US3634515A | 1972-01-11 | |||
US4654403A | 1987-03-31 | |||
US6559105B2 | 2003-05-06 | |||
US4285822A | 1981-08-25 |
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
Download PDF: