Title:
【発明の名称】グラフト度の高い、多官能性オレフイン共重合体VI変性剤
Document Type and Number:
Japanese Patent JP3081876
Kind Code:
B2
Abstract:
An olefin copolymer which comprises the reaction product of an acylated olefin copolymer and a polyamine, wherein the acylated olefin copolymer comprises an olefin copolymer having grafted thereon from 0.3 to 0.75 carboxylic groups per 1000 number average molecular weight units of olefin copolymer and wherein the olefin copolymer has a number average molecular weight of from 20,000 to 150,000. The copolymer is used as an additive in lubricating oil compositions where it acts as a viscosity modifier.
Inventors:
JOSEPH JEI BARCO
Mark Thomas Devlin
Mark Reese
Peter Growcott
Erol Jei Olivia
Mark Thomas Devlin
Mark Reese
Peter Growcott
Erol Jei Olivia
Application Number:
JP37779598A
Publication Date:
August 28, 2000
Filing Date:
December 09, 1998
Export Citation:
Assignee:
ETHYL CORPORATION
Day's M.N.V.
Day's M.N.V.
International Classes:
C10L1/22; C08F8/32; C08F255/00; C08F255/04; C10L1/2383; C10L10/08; C10M133/52; C10M133/58; C10M143/00; C10M149/02; C10M149/10; C10N30/02; C10N40/25; (IPC1-7): C10M149/02; C08F8/32
Domestic Patent References:
| JP2225596A | ||||
| JP5112791A | ||||
| JP1284593A |
Attorney, Agent or Firm:
Heiyoshi Odashima (1 person outside)