High viscosity base stock compositions
US10301557B2 · kind B2 · utility
2Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2016 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Apr 18, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods are provided for producing Group I base stocks having high viscosity and also having one or more properties indicative of a high quality base stock. The resulting Group I base stocks can have a viscosity at 100° C. and/or a viscosity at 40° C. that is greater than the corresponding viscosity for a conventional Group I bright stock formed by solvent processing. Additionally, the resulting Group I base stocks can have one or more properties that are indicative of a high quality base stock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.