Dispersants and process for their preparation
US3980569A · kind A · utility
88Cited by
2References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1975 |
| Grant date | Sep 14, 1976 |
| Priority date | — |
| Expiry date | Jan 13, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compositions useful as lubricant and fuel dispersants are prepared by reacting a hydroxyaromatic compound containing an aliphatic or alicyclic substituent which has at least about 6 carbon atoms with an aldehyde in the presence of an alkaline reagent and at a temperature up to about 125.degree.C., substantially neutralizing the resulting intermediate at a temperature up to about 150.degree.C., and then reacting with a primary or secondary amino compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.