Viscosity improver grafted with unsaturated acylating agent and a polyaromatic hydrocarbon
US9234153B2 · kind B2 · utility
0Cited by
9References
24Claims
0Family size
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Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Nov 9, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/252
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed is an oil-soluble lubricating oil additive composition, suitable for use as a dispersant viscosity index improver in lubricating oils; prepared by the process which comprises reacting a hydrocarbon polymer having a number average molecular weight (Mn) between about 7,000 and about 500,000 wherein the polymer backbone has been functionalized with an ethylenically unsaturated acylating agent and a hydroxyl-linked polycyclic fused ring component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.