Asymmetrical mannich base derivatives and the production and uses thereof
US5512067A · kind A · utility
4Cited by
20References
43Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 1995 |
| Grant date | Apr 30, 1996 |
| Priority date | — |
| Expiry date | May 22, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2215/042
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds are described in which a polyamine moiety is linked to a phenolic moiety by a Mannich base linkage involving one of the amino groups of the polyamine moiety, and in which an aminoalkylene-poly(oxyalkylene) moiety is linked to the phenolic moiety by a Mannich base linkage involving an amino group of the alkylene-poly(oxyalkylene) moiety. Compounds of this type have been found to be highly effective in controlling the formation of intake valve deposits in internal combustion engines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.