Title:
POLY(METH)ACRYLATE-BASED VISCOSITY INDEX IMPROVER, LUBRICANT ADDITIVE AND LUBRICANT COMPOSITION CONTAINING VISCOSITY INDEX IMPROVER
Document Type and Number:
WIPO Patent Application WO/2014/017553
Kind Code:
A1
Abstract:
The present invention provides a poly(meth)acrylate-based viscosity index improver having a core, and three or more arms comprising a polymer chain containing a structural unit represented by formula (1) and a structural unit represented by formula (2), one end of said polymer chain being bonded to the core. The weight-average molecular weight (Mw) of the poly(meth)acrylate-based viscosity index improver is at least 100,000, and the weight-average molecular weight/the number average molecular weight (Mn) is not more than 1.6. [R1 represents hydrogen or a methyl group; R2 represents the group represented by formula (3); and R3 represents an alkyl group with 1 to 18 carbons. m and n are integers that satisfy m ≥ 5, n ≥ 4, and m + n ≤ 31.]
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/JP2013/070085
Publication Date:
January 30, 2014
Filing Date:
July 24, 2013
Export Citation:
Assignee:
JX NIPPON OIL & ENERGY CORP (JP)
International Classes:
C10M145/14; C10M101/02; C10M135/18; C10M169/04; C10N10/12; C10N20/02; C10N20/04; C10N30/02; C10N30/06; C10N40/25
Domestic Patent References:
WO2005037967A1 | 2005-04-28 |
Foreign References:
JP2009534521A | 2009-09-24 | |||
JP2009506179A | 2009-02-12 | |||
JP2008518052A | 2008-05-29 | |||
JP2000063439A | 2000-02-29 | |||
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 2878660A4
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)
Yoshiki Hasegawa (JP)
Download PDF:
Previous Patent: DRUM BRAKE DEVICE
Next Patent: POLY(METH)ACRYLATE VISCOSITY INDEX IMPROVER, AND LUBRICATING OIL COMPOSITION AND LUBRICATING OIL ADD...
Next Patent: POLY(METH)ACRYLATE VISCOSITY INDEX IMPROVER, AND LUBRICATING OIL COMPOSITION AND LUBRICATING OIL ADD...