High viscosity base stock compositions
US10450513B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Apr 5, 2019 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Apr 5, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods are provided for producing Group II base stocks having high viscosity and also having one or more properties indicative of a high quality base stock. The resulting Group II 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 II base stock. Additionally, the resulting Group II 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.