Synthetic polyolefin lubricant blends
US5105038A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | Dec 7, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2020/01
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Synthetic lubricant blends exhibiting superior lubricant properties such as high viscosity index, including mixtures of oligomeric products of shape selective catalysis with other lubricants, such as high viscosity index poly-alpha-(.alpha.-)olefins lubricant basestock, conventional poly(.alpha.-olefin) and/or other liquid lubricant basestock material. Preferred lubricant mixtures comprise hydrogenated components: PA0 a) a low viscosity C.sub.20 -C.sub.60 lubricant range liquid comprising substantially linear hydrocarbon moietoes prepared by shape selective catalysis of lower olefin with medium pore acid zeolite catalyst to provide substantially linear liquid olefinic intermediates or C.sub.20.sup.+ lubricants, said lubricant range liquid having a kinematic viscosity of about 2-10 cS at 100.degree. C.; and PA0 b) at least one poly(.alpha.-olefin) having viscosity greater than 20 cS and viscosity index improvement properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.