Title:
POLY(METH)ACRYLATE VISCOSITY INDEX IMPROVER, AND LUBRICATING OIL COMPOSITION AND LUBRICATING OIL ADDITIVE CONTAINING SAID VISCOSITY INDEX IMPROVER
Document Type and Number:
WIPO Patent Application WO/2014/017558
Kind Code:
A1
Abstract:
The present invention provides a poly(meth)acrylate viscosity index improver that has a polymer chain containing a structural unit represented by general formula (1), and that has a weight average molecular weight (Mw) of at least 100,000 and a ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of at most 1.6. [In formula (1), R1 represents hydrogen or a methyl group, and R2 represents a C1-36 alkyl group.]
Inventors:
MATSUI SHIGEKI (JP)
MIYAMOTO HIROYA (JP)
MATSUDA HIROMITSU (JP)
TAGAWA KAZUO (JP)
TAKAGI AKIRA (JP)
UENO RYUICHI (JP)
MIYAMOTO HIROYA (JP)
MATSUDA HIROMITSU (JP)
TAGAWA KAZUO (JP)
TAKAGI AKIRA (JP)
UENO RYUICHI (JP)
Application Number:
PCT/JP2013/070100
Publication Date:
January 30, 2014
Filing Date:
July 24, 2013
Export Citation:
Assignee:
JX NIPPON OIL & ENERGY CORP (JP)
International Classes:
C10M145/14; C10N30/02
Domestic Patent References:
| WO2005037967A1 | 2005-04-28 |
Foreign References:
| JP2009534519A | 2009-09-24 | |||
| JP2009534518A | 2009-09-24 | |||
| JP2009510178A | 2009-03-12 | |||
| JP2007512413A | 2007-05-17 | |||
| JP2004149794A | 2004-05-27 | |||
| JPH0748421A | 1995-02-21 | |||
| JPH0762372A | 1995-03-07 | |||
| JPH06145258A | 1994-05-24 | |||
| JPH03100099A | 1991-04-25 | |||
| JP2002302687A | 2002-10-18 | |||
| JP2004124080A | 2004-04-22 | |||
| JP2005187736A | 2005-07-14 | |||
| JP2009286831A | 2009-12-10 |
Other References:
See also references of EP 2878657A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
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