Dispersant-viscosity improvers for lubricating oil compositions
US6881780B2 · kind B2 · utility
13Cited by
16References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2001 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Oct 30, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A polyacrylate ester, and more particularly a polymethacrylate ester based dispersant-viscosity improver for lubricating oil compositions. Specifically, the dispersant viscosity improvers of this invention are nitrogen-containing copolymers comprising units derived from
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.