Lubricating oil composition containing a dialkyl dithiocarbamate-modified EPDM viscosity index improver
US4502972A · kind A · utility
5Cited by
6References
6Claims
0Family size
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Key dates
| Filing date | Jun 25, 1982 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | Jun 25, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2225/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The viscosity index and wear inhibiting properties of lubricating oil are improved by adding an effective amount of a 20,000-300,000 molecular weight olefin copolymer to which are grafted di-C.sub.1-20 alkyl dithiocarbamate groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.