Viscosity improver grafted with unsaturated acylating agent and an aryloxyalylkene monoamine
US9115237B2 · kind B2 · utility
1Cited by
57References
25Claims
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Key dates
| Filing date | Jul 18, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Oct 10, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/06
- WIPO fieldBasic materials chemistry
- 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 an aryloxy-alkylene amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.