Production of high V.I. lubricating oil stock
US4176050A · kind A · utility
38Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1978 |
| Grant date | Nov 27, 1979 |
| Priority date | — |
| Expiry date | Dec 4, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J29/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Waxy distillate lubricating oil stocks suitable for the preparation, by conventional unit processes, of high V.I., low pour point lubricating oils, are advantageously catalytically dewaxed with macrocrystalline ZSM-5 (crystallites larger than 2 microns) preferably associated with a hydrogenation metal such as platinum or palladium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.