Title:
グラフトコポリマーの使用
Document Type and Number:
Japanese Patent JP5419351
Kind Code:
B2
Abstract:
The invention relates to the use of graft polymers obtained by polymerization in two stages. In a first stage, at least one graft basis is produced by radically polymerizing a monomer composition A) containing 0 to 40 percent by weight of one or several ethylenically unsaturated ester compounds of formula (I), wherein R represents hydrogen or methyl, R1 represents a linear or branched alkyl radical comprising 1 to 5 carbon atoms, R2 and R3 independently represent hydrogen or a group of formula —COOR′, wherein R′ represents hydrogen or an alkyl group comprising 1 to 5 carbon atoms, 60 to 100 percent by weight of one or several ethylenically unsaturated ester compounds of formula (II), wherein R represents hydrogen or methyl, R4 represents a linear or branched alkyl radical comprising 6 to 40 carbon atoms, R5 and R6 independently represent hydrogen or a group of formula —COOR′, wherein R′ represents hydrogen or an alkyl group comprising 6 to 40 carbon atoms, and 0 to 40 percent by weight of comonomers, the percentages being relative to the weight of monomer composition A). In a second stage, a monomer composition B) containing 20 to 100 percent by weight of at least one monomer that comprises at least one nitrogen-containing group is grafted onto the graft basis in order to reduce wear in lubricant oil compositions. Said graft polymer comprises a maximum of 200 ppm of sulfur while the weight ratio between monomer composition A) and monomer composition B) ranges between 99.7:0.3 and 80:20.
Inventors:
Marx Scheller
Klaus Heetrich
Alexander Dardin
Michael Muller
Thorsten Steer
Boris Eisenberg
Klaus Heetrich
Alexander Dardin
Michael Muller
Thorsten Steer
Boris Eisenberg
Application Number:
JP2007520692A
Publication Date:
February 19, 2014
Filing Date:
June 23, 2005
Export Citation:
Assignee:
Evonik Oil Additives GmbH
International Classes:
C10M169/04; C08F265/06; C10M149/02; C10M149/10; C10M161/00; C10N20/02; C10N20/04; C10N30/02; C10N30/04; C10N30/06; C10N40/04; C10N40/25
Domestic Patent References:
| JP51020237B1 | ||||
| JP53002883B1 | ||||
| JP7228642A | ||||
| JP9003131A |
Attorney, Agent or Firm:
Einzel Felix-Reinhard
Takuya Kuno
Kiyoshi Kuruma
Kamiya Yukie
Takuya Kuno
Kiyoshi Kuruma
Kamiya Yukie