Title:
FRICTION AND WEAR REDUCING AGENT FOR LUBRICATING OIL AND LUBRICATING OIL COMPOSITION CONTAINING SAME
Document Type and Number:
WIPO Patent Application WO/2013/089143
Kind Code:
A1
Abstract:
The purpose of the invention is to provide a very safe lubricating oil additive, substantially free of metal elements or the like and possessing a friction and wear reducing effect as well as an extreme pressure performance equivalent to existing extreme pressure agents containing metal elements in lubrication uses. To achieve this purpose, the invention provides a friction and wear reducing agent for lubricating oil, the agent being characterized in comprising a copolymer (A) for which an alkyl acrylate (a) represented by general formula (1) and a hydroxyalkyl acrylate (b) represented by general formula (2) are essential constituent monomers, the constituent ratio of (a) and (b) being (a)/(b)=50/50 to 90/10 (molar ratio) and the weight-average molecular weight being 2,000 to less than 40,000. (1) (In the formula, R1 represents a C10-18 alkyl group.) (2) (In the formula, R2 represents a C2-4 alkylene group.)
Inventors:
TAKATA MASAHIRO (JP)
YAMAMOTO KENJI (JP)
YAMAMOTO KENJI (JP)
Application Number:
PCT/JP2012/082225
Publication Date:
June 20, 2013
Filing Date:
December 12, 2012
Export Citation:
Assignee:
ADEKA CORP (JP)
International Classes:
C10M145/14; C10M169/04; C10N20/04; C10N30/06; C10N40/00; C10N40/02; C10N40/04; C10N40/08; C10N40/12; C10N40/16; C10N40/20; C10N40/25; C10N40/30; C10N50/10
Foreign References:
| JP2012041407A | 2012-03-01 | |||
| JP2006522176A | 2006-09-28 | |||
| JP2009007562A | 2009-01-15 | |||
| JP2001049284A | 2001-02-20 | |||
| JP2010535870A | 2010-11-25 | |||
| JP2008133440A | 2008-06-12 | |||
| JPH02169694A | 1990-06-29 | |||
| JP2011079871A | 2011-04-21 | |||
| JPH01287196A | 1989-11-17 | |||
| JP2002012881A | 2002-01-15 | |||
| JP2005325241A | 2005-11-24 | |||
| JP2010182256A | 2010-08-19 |
Other References:
MAMORU MORITA ET AL.: "Hakumaku Junkatsuka ni Okeru Kannoki Donyugata Polyalkylacrylate Tenkayu no Sendan Kyodo", THE JAPAN PETROLEUM INSTITUTE NENKAI SHUKI TAIKAI KOEN YOSHISHU, DAI 40 KAI SEKIYU SEKIYU KAGAKU TORONKAI (KOBE), 25 January 2011 (2011-01-25), pages 159, XP008174789
See also references of EP 2792733A4
See also references of EP 2792733A4
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
Michiharu Soga (JP)
Michiharu Soga (JP)
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Claims: