Dispersant viscosity modifiers containing aromatic amines
US7790661B2 · kind B2 · utility
14Cited by
25References
23Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 29, 2005 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Aug 13, 2028 |
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.