Title:
LUBRICANT COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2013/154005
Kind Code:
A1
Abstract:
A lubricant composition which is characterized by containing: (A) an ethylene/α-olefin copolymer that satisfies all of the conditions (A-1)-(A-3) described below; (F) a sulfur-containing compound wherein at least one hydrocarbon group adjacent to a sulfur atom is a secondary or tertiary hydrocarbon group; and, as an optional component, (G) a polymer of an α-olefin having 3-6 carbon atoms. This lubricant composition is also characterized in that: the kinematic viscosity at 40°C is 450-51,000 mm2/s; the sulfur content is 0.1-5 parts by weight; and the content of the component (G) is 0-15 parts by weight. This lubricant composition is especially suitable for gear oil and the like. (A-1) The content of ethylene structure units is 30-70% by mole. (A-2) The kinematic viscosity at 100°C is 20-3,000 mm2/s. (A-3) The Mw/Mn as determined by GPC is 1-2.5.
Inventors:
KANESHIGE RYOUSUKE (JP)
ABE SHOTA (JP)
ABE SHOTA (JP)
Application Number:
PCT/JP2013/060202
Publication Date:
October 17, 2013
Filing Date:
April 03, 2013
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
C10M169/04; C10M101/02; C10M105/32; C10M107/04; C10M107/06; C10M107/08; C10M107/10; C10M135/22; C10N20/00; C10N20/02; C10N20/04; C10N30/02; C10N30/06; C10N40/04
Domestic Patent References:
| WO2000034420A1 | 2000-06-15 |
Foreign References:
| JP2011190377A | 2011-09-29 | |||
| JP2005126709A | 2005-05-19 | |||
| US3909432A | 1975-09-30 |
Other References:
"Polymer Analysis Handbook", ASAKURA PUBLISHING CO., LTD., pages: 163 - 170
See also references of EP 2837676A4
See also references of EP 2837676A4
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
Patent business corporation SSINPAT (JP)
Patent business corporation SSINPAT (JP)
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