Lubricating composition having a selectively sulfonated and hydrogenated block copolymer viscosity-index improver
US4086171A · kind A · utility
10Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1977 |
| Grant date | Apr 25, 1978 |
| Priority date | — |
| Expiry date | May 23, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricating composition having much improved high temperature performance characteristics comprises a major amount of a lubricating oil and a viscosity-index improving amount of a selectively sulfonated and selectively hydrogenated monoalkenyl arene-conjugated diene two block copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.