Title:
MULTIGRADE ENGINE OIL PREPARED FROM FISCHER-TROPSCH DISTILLATE BASE OIL
Document Type and Number:
WIPO Patent Application WO2006019821
Kind Code:
A3
Abstract:
A multigrade engine oil meeting the specifications for SAE J300 revised June 2001 requirements and a process for preparing it, said engine oil comprising (a) between about 15 to about 94.5 wt % of a hydroisomerized distillate Fischer-Tropsch base oil characterized by (i) a kinematic viscosity between about 2.5 and about 8 cSt at 100 °C, (ii) at least about 3 wt % of the molecules having cycloparaffin functionality, and (iii) a ratio of weight percent molecules with monocycloparaffin functionality to weight percent of molecules with multicycloparaffin functionality greater than about 15; (b) between about 0.5 to about 20 wt % of a pour point depressing base oil blending component prepared from an hydroisomerized bottoms material having an average degree of branching in the molecules between about 5 and 9 alkyl-branches per 100 carbon atoms and wherein not more than 10 wt % boils below about 900 °F; and (c) between about 5 to about 30 wt % of an additive package designed to meet the specifications for ILSAC GF-3.
Inventors:
ROSENBAUM JOHN M (US)
MILLER STEPHEN J (US)
ABERNATHY SUSAN M (US)
MILLER STEPHEN J (US)
ABERNATHY SUSAN M (US)
Application Number:
PCT/US2005/024860
Publication Date:
September 21, 2006
Filing Date:
July 13, 2005
Export Citation:
Assignee:
CHEVRON USA INC (US)
ROSENBAUM JOHN M (US)
MILLER STEPHEN J (US)
ABERNATHY SUSAN M (US)
ROSENBAUM JOHN M (US)
MILLER STEPHEN J (US)
ABERNATHY SUSAN M (US)
International Classes:
C10M101/02; C10M107/02
Foreign References:
| US7053254B2 | 2006-05-30 | |||
| US7018525B2 | 2006-03-28 | |||
| US6475960B1 | 2002-11-05 | |||
| US6096940A | 2000-08-01 | |||
| US6332974B1 | 2001-12-25 | |||
| US6165949A | 2000-12-26 |
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