Dispersant viscosity modifiers containing aromatic amines
US7960320B2 · kind B2 · utility
5Cited by
26References
20Claims
0Family size
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Inventors
Key dates
| Filing date | Aug 18, 2010 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Aug 18, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/252
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Reaction of a carboxylic acid-containing polymer with certain aromatic amines results in dispersant viscosity modifiers with improved soot handling performance in heavy-duty diesel engines, compared with reaction with non-aromatic amines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.