Title:
潤滑油組成物のための分散剤-粘性改善剤
Document Type and Number:
Japanese Patent JP4920846
Kind Code:
B2
Abstract:
Graft copolymers useful as a dispersant-viscosity improver for lubricating oil compositions comprise a hydrocarbon polymer having graft polymerized thereon at least two nitrogen containing units, at least one of the nitrogen containing units being derived from at least one of a neutral N-(lower hydrocarbyl group)- (meth)acrylamide and a neutral N,N-di-(lower hydrocarbyl group)- (meth)acrylamide, wherein the total number of carbon atoms in the lower hydrocarbyl groups does not exceed 9, and at least one of the nitrogen containing units being derived from at least one vinylic nitrogen containing heterocyclic compound.
Inventors:
Smoggy, Jonsey.
Range Richard M.
Range Richard M.
Application Number:
JP2001523659A
Publication Date:
April 18, 2012
Filing Date:
September 14, 2000
Export Citation:
Assignee:
THE LUBRIZOL CORPORATION
International Classes:
C08F291/00; C10M143/00; C08F255/06; C08F287/00; C10M149/06; C10M149/10; C10N30/02; C10N30/04
Domestic Patent References:
| JPS54117592A | 1979-09-12 | |||
| JPH02214713A | 1990-08-27 | |||
| JPS54145787A | 1979-11-14 | |||
| JPH0762170A | 1995-03-07 | |||
| JPH04264115A | 1992-09-18 | |||
| JPH06145261A | 1994-05-24 | |||
| JPS5218705A | 1977-02-12 | |||
| JPS4729481A |
Attorney, Agent or Firm:
Hidesaku Yamamoto