Lubricant blends having high viscosity indices
US4912272A · kind A · utility
52Cited by
10References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1988 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Jun 23, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2020/01
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel lubricant mixtures are disclosed having unexpectedly high viscosity indices. The mixtures are blends of high viscosity index polyalphaolefins prepared with activated chromium on silica catalyst and polyalphaolefins prepared with BF3, aluminum chloride, or Ziegler-type catayst. Superior blends are also prepared from HVIXPAO with mineral oil and/or other synthetic liquid lubricants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.