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Title:
低いブルックフィールド粘度を有する潤滑剤混合物
Document Type and Number:
Japanese Patent JP2007538144
Kind Code:
A
Abstract:
Lubricant blends and finished gear oils comprising a lubricant base oil fraction derived from highly paraffinic wax, a petroleum derived base oil, and a pour point depressant are provided. The lubricant base oil fraction derived from highly paraffinic wax comprises less than 0.30 weight percent aromatics, greater than 5 weight percent molecules with cycloparaffinic functionality, and a ratio of weight percent of molecules with monocycloparaffinic functionality to weight percent of molecules with multicycloparaffinic functionality greater than 15. The petroleum derived base oils comprises greater than 90 weight percent saturates and less than 300 ppm sulfur and is preferably selected from the group consisting of a Group II base oil, a Group III base oil, and mixtures thereof. These lubricant blends have surprising low Brookfield viscosities at -40{C. The pour point depressant is preferably polymethacrylate and/or an isomerised Fischer-Tropsch derived bottoms product.

Inventors:
Rosenbaum, John, M.
Miller, Stephan, Jay.
Padrac, Joseph, M.
Application Number:
JP2007527526A
Publication Date:
December 27, 2007
Filing Date:
May 19, 2005
Export Citation:
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Assignee:
Chevron U.S.A. Inc.
International Classes:
C10M169/04; C10M101/02; C10M105/04; C10M111/02; C10M111/06; C10M143/02; C10M145/10; C10M145/14; C10M145/20; C10M145/22; C10M145/24; C10M149/06; C10M157/00; C10M159/12; C10M171/02; C10N20/00; C10N20/02; C10N30/08; C10N40/04
Domestic Patent References:
JP2005503479A2005-02-03
JP2004521976A2004-07-22
JP2002524610A2002-08-06
JP2002524605A2002-08-06
Foreign References:
WO2002070636A12002-09-12
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Takamatsu Takefu
Katsunori Ando