Title:
分散性粘度調整剤
Document Type and Number:
Japanese Patent JP2012532957
Kind Code:
A
Abstract:
The disclosed invention relates to a composition comprising a grafted polymer. The polymer comprises a backbone with at least one olefin block and at least one vinyl aromatic block. The polymer is grafted with a pendant carbonyl containing group, the grafting being conducted by halogenating the vinyl aromatic carbon of the vinyl aromatic block and then grafting a carboxylic acid or derivative thereof on the halogenated vinyl aromatic carbon in the presence of an activating agent. The carbonyl containing-group is optionally substituted to provide ester, imide and/or amide functionality. The grafted polymer is useful as a dispersant viscosity modifier in lubricating compositions such as engine oils.
Inventors:
Price, david
Burton, William Earl. S.
Saton, Michael Earl.
Davies, Mark Sea.
Burton, William Earl. S.
Saton, Michael Earl.
Davies, Mark Sea.
Application Number:
JP2012519661A
Publication Date:
December 20, 2012
Filing Date:
July 06, 2010
Export Citation:
Assignee:
THE LUBRIZOL CORPORATION
International Classes:
C08F8/46; C08F8/20; C08L15/00; C08L91/00; C10M143/00; C10M143/10; C10M143/12; C10M145/10; C10M149/06; C10M159/12; C10M177/00; C10N20/00; C10N20/04; C10N30/02; C10N30/04; C10N40/04; C10N40/08; C10N40/12; C10N40/20; C10N40/25; C10N70/00
Domestic Patent References:
| JP2005522540A | 2005-07-28 | |||
| JPH11506978A | 1999-06-22 | |||
| JP2005522540A | 2005-07-28 | |||
| JPH11506978A | 1999-06-22 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita