Process for preparing hydrocarbon mixture exhibiting unique branching structure
US10961167B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 30, 2019 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Apr 30, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2203/024
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Provided herein is a unique process that prepares a saturated hydrocarbon mixture with well-controlled structural characteristics that address the performance requirements driven by the stricter environmental and fuel economy regulations for automotive engine oils. The process allows for the branching characteristics of the hydrocarbon molecules to be controlled so as to consistently provide a composition that has a surprising CCS viscosity at −35° C. (ASTM D5329) and Noack volatility (ASTM D5800) relationship. The process comprises providing a specific olefinic feedstock, oligomerizing in the presence of a BF3 catalyst, and hydroisomerizing in the presence of a noble-metal impregnated, 10-member ring zeolite catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.