Title:
潤滑油組成物
Document Type and Number:
Japanese Patent JP2005516109
Kind Code:
A
Abstract:
The present invention provides a viscosity index improving lubricant additive which comprises an olefinic oligomer of about 2,000 to about 20,000 number average molecular weight having a viscosity of 75 to about 3,000 cSt at 100° C. and a hydrocarbyl aromatic which contains at least about 5% of its weight from aromatic moieties having a viscosity of about 3 to about 50 cSt at 100° C. where the weight ratio of hydrocarbyl aromatic component to olefin oligomer is from about 1:2 to about 50:1. In another aspect, the invention provides for a lubricating oil composition comprising a base oil and the instant viscosity index improving additive.
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Inventors:
Deckman, Douglas, Edward
Maxwell, William, Elle.
Back, William, Etch.
Wine mirror, mark, di.
Bay Largeon, David, Jay.
Maxwell, William, Elle.
Back, William, Etch.
Wine mirror, mark, di.
Bay Largeon, David, Jay.
Application Number:
JP2003564168A
Publication Date:
June 02, 2005
Filing Date:
January 31, 2003
Export Citation:
Assignee:
EXXON RESEARCH AND ENGINEERING COMPANY
International Classes:
C10M101/02; C10M111/04; C10M129/14; C10M129/18; C10M135/28; C10M143/00; C10M143/08; C10M161/00; C10M169/04; C10N20/02; C10N20/04; C10N30/02; C10N40/25; (IPC1-7): C10M161/00; C10M101/02; C10M129/14; C10M129/18; C10M135/28; C10M143/00; C10M143/08
Attorney, Agent or Firm:
Kenji Kawabi