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Title:
FRICTION MODIFIER FOR LUBRICANT AND LUBRICANT COMPOSITION
Document Type and Number:
Japanese Patent JP2006111887
Kind Code:
A
Abstract:

To provide a friction modifier for lubricant, exhibiting decrease of shock in change gear and improved torque transmitting function, and to provide a lubricant composition containing the modifier.

The friction modifier for lubricant comprises an oil-soluble copolymer (A) containing at least one monomer (a) unit represented by general formula (1); CH2=C(R1)-Q-(Z-A1)m-X, and at least one monomer (b) unit represented by general formula (2); CH2=C(R3)-CO-(O-A2)n-OR4, and having ≥3,000 weight-average molecular weight. The friction modifier composition comprises the copolymer (A), and one or more selected from a group consisting of diluents and other additives. The lubricant composition comprises a base oil and the friction modifier or the friction modifier composition, wherein the composition contains 0.01-40 wt.% copolymer (A) based on the weight of the base oil.


Inventors:
Yuki, Takeshi
Nishida, Minoru
Application Number:
JP2006000013414
Publication Date:
April 27, 2006
Filing Date:
January 23, 2006
Export Citation:
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Assignee:
SANYO CHEM IND LTD
International Classes:
C10M149/04; C10M101/02; C10M105/04; C10M105/32; C10M169/04; C10M177/00; C10N20/02; C10N20/04; C10N30/06; C10N40/04; C10N70/00