Isoparaffinic base stocks by dewaxing fischer-tropsch wax hydroisomerate over Pt/H-mordenite
US6375830B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2000 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Nov 21, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S208/95
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A high VI and low pour point lubricant base stock is made by hydroisomerizing a high purity, waxy, paraffinic Fischer-Tropsch synthesized hydrocarbon fraction having an initial boiling point in the range of 650-750° F., followed by catalytically dewaxing the hydroisomerate using a dewaxing catalyst comprising a catalytic platinum component and an H-mordenite component. The hydrocarbon fraction is preferably synthesized by a slurry Fischer-Tropsch using a catalyst containing a catalytic cobalt component. This combination of the process, high purity, waxy paraffinic feed and the Pt/H-mordenite dewaxing catalyst, produce a relatively high yield of premium lubricant base stock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.