Title:
LUBRICANT OIL COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2022/210014
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a lubricant oil composition which has a small viscosity, and in which the friction coefficient thereof can be kept at a low level and the variation in the friction coefficient can be reduced. The problem can be solved by a lubricant oil composition comprising a base oil (P) and a copolymer (X), in which the copolymer (X) contains the following constituent units (a) to (c): constituent unit (a): a constituent unit derived from a monomer (A) having a (meth)acryloyl group and a linear or branched alkyl group having 6 to 24 carbon atoms; constituent unit (b): a constituent unit derived from a monomer (B) having a (meth)acryloyl group and a polar group; and constituent unit (c): a constituent unit derived from a monomer (C) having a polymerizable functional group and a cyclic structure group. The copolymer (X) has a mass average molecular weight (Mw) of 5,000 to 50,000, the content of the copolymer (X) in terms of resin content is 0.10% by mass to 2.5% by mass relative to the whole amount of the lubricant oil composition, and the 100°C dynamic viscosity is 8.2 mm2/s or less.
More Like This:
Inventors:
SUNAHARA KENJI (JP)
FUJITA SHOICHIRO (JP)
KUBOTA MASAYA (JP)
KATO SHOTA (JP)
FUJITA SHOICHIRO (JP)
KUBOTA MASAYA (JP)
KATO SHOTA (JP)
Application Number:
PCT/JP2022/012548
Publication Date:
October 06, 2022
Filing Date:
March 18, 2022
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C10M161/00; C10M145/14; C10M135/18; C10M137/10; C10M159/18; C10N10/04; C10N10/12; C10N20/04; C10N30/06; C10N40/25
Domestic Patent References:
| WO2017002969A1 | 2017-01-05 |
Foreign References:
| JP2019189668A | 2019-10-31 | |||
| JP2020090557A | 2020-06-11 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
Download PDF: