Title:
LUBRICANT BLENDS WITH LOW BROOKFIELD VISCOSITIES
Document Type and Number:
WIPO Patent Application WO2005113734
Kind Code:
A3
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.
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Inventors:
ROSENBAUM JOHN M (US)
MILLER STEPHEN J (US)
PUDLAK JOSEPH M (US)
MILLER STEPHEN J (US)
PUDLAK JOSEPH M (US)
Application Number:
PCT/US2005/017976
Publication Date:
June 22, 2006
Filing Date:
May 19, 2005
Export Citation:
Assignee:
CHEVRON USA INC (US)
ROSENBAUM JOHN M (US)
MILLER STEPHEN J (US)
PUDLAK JOSEPH M (US)
ROSENBAUM JOHN M (US)
MILLER STEPHEN J (US)
PUDLAK JOSEPH M (US)
International Classes:
C10G71/00; C10M101/00; C10M111/02; C10M111/06; C10M157/00; C10M169/04; C10M145/14; C10M159/12; C10M171/02
Foreign References:
| US6475960B1 | 2002-11-05 | |||
| US6420618B1 | 2002-07-16 | |||
| US6080301A | 2000-06-27 | |||
| US6506297B1 | 2003-01-14 | |||
| US6190532B1 | 2001-02-20 | |||
| US6096940A | 2000-08-01 | |||
| US5208403A | 1993-05-04 |
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