Title:
VISCOSITY INDEX IMPROVER AND LUBRICANT COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2007/116759
Kind Code:
A1
Abstract:
Disclosed is a viscosity index improver which is excellent in shear stability, viscosity index improvability and low-temperature viscosity characteristics. Also disclosed are a lubricant composition containing such a viscosity index improver, and a monomer which is used for producing such a viscosity index improver. Specifically disclosed is a viscosity index improver composed of a copolymer (A) which contains a monomer (a) represented by the general formula (1) below as a constituent monomer. Also specifically disclosed is a lubricant composition containing the viscosity index improver and a base oil, and a monomer composition containing the monomer (a).
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Inventors:
YUKI TSUYOSHI (JP)
HAMANO KAZUKI (JP)
HAMANO KAZUKI (JP)
Application Number:
PCT/JP2007/056453
Publication Date:
October 18, 2007
Filing Date:
March 27, 2007
Export Citation:
Assignee:
SANYO CHEMICAL IND LTD (JP)
YUKI TSUYOSHI (JP)
HAMANO KAZUKI (JP)
YUKI TSUYOSHI (JP)
HAMANO KAZUKI (JP)
International Classes:
C09K3/00; C08F220/26; C08F290/06; C08F299/00; C10M101/02; C10M137/04; C10M137/08; C10M145/14; C10M169/04; C10N20/00; C10N20/02; C10N20/04; C10N30/02; C10N30/08; C10N40/04; C10N40/06; C10N40/08; C10N40/25
Foreign References:
JP2003147332A | 2003-05-21 | |||
GB852332A | 1960-10-26 | |||
JPH0748421A | 1995-02-21 | |||
JPH0762372A | 1995-03-07 | |||
JP2732187B2 | 1998-03-25 | |||
JP2941392B2 | 1999-08-25 | |||
JP2002302687A | 2002-10-18 | |||
JP2004124080A | 2004-04-22 | |||
JP2005187736A | 2005-07-14 | |||
US5384336A | 1995-01-24 | |||
US6740621B2 | 2004-05-25 | |||
JP2006509899A | 2006-03-23 | |||
JPH0922742A | 1997-01-21 | |||
JP2669553B2 | 1997-10-29 |
Other References:
See also references of EP 2009074A4
TAKEHIKO FUJIMOTO: "Shin. Kaimenkasseizai Nyumon", SANYO CHEMICAL INDUSTRIES, LTD., pages: 197 - 201
TAKEHIKO FUJIMOTO: "Shin. Kaimenkasseizai Nyumon", SANYO CHEMICAL INDUSTRIES, LTD., pages: 197 - 201
Attorney, Agent or Firm:
YASUTOMI, Yasuo et al. (5-36 Miyahara 3-chome, Yodogawa-ku, Osaka-sh, Osaka 03, JP)
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