Title:
粘度指数を改善するための(メタ)アクリレートポリマー
Document Type and Number:
Japanese Patent JP2013517355
Kind Code:
A
Abstract:
The invention relates to a (meth)acrylate polymer for improving the viscosity index, which comprises a) from 5 to 60 wt % of repeating units that are derived from (meth)acrylates of formula (I), where R represents hydrogen or methyl and R1 is an alkyl radical having from 1 to 6 carbon atoms, b) from 5 to 80 wt % of repeating units that are derived from (meth)acrylates of formula (II), where R is hydrogen or methyl and R2 is an alkyl radical having from 7 to 30 carbon atoms, and c) from 15 to 90 wt % of repeating units that are derived from (meth)acrylates of formula (III), where R is hydrogen or methyl, n is an integer in the range of 2 to 500 and A is C2-C4 alkylene and R3 is a hydrogen atom or an alkyl radical having from 1 to 4 carbon atoms. The invention further relates to novel lubricating oil compositions, to a method for producing the above-mentioned (meth)acrylate polymers and to the use thereof for improving the viscosity index of lubricating oil compositions that comprise at least one polar base oil.
Inventors:
Reneco Shovec
Zandra Kunzel
Marks Weber
Torsten Bartels
Christoph Vinciats
Zandra Kunzel
Marks Weber
Torsten Bartels
Christoph Vinciats
Application Number:
JP2012549269A
Publication Date:
May 16, 2013
Filing Date:
December 08, 2010
Export Citation:
Assignee:
Evonik Oil Additives GmbH
International Classes:
C10M145/14; C10M107/34; C10M149/04; C10M149/06; C10M149/10; C10N20/04; C10N30/02; C10N40/04; C10N40/25
Domestic Patent References:
| JPH03100099A | 1991-04-25 | |||
| JP2001524578A | 2001-12-04 | |||
| JP2002080873A | 2002-03-22 |
Foreign References:
| US3052648A | 1962-09-04 | |||
| US3251775A | 1966-05-17 |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Takuya Kuno
Takuya Kuno