Mannich condensation products of polyalkylene hydroxyaromatic esters and fuel compositions containing the same
US5399178A · kind A · utility
14Cited by
10References
72Claims
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Key dates
| Filing date | Dec 17, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Dec 17, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/305
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Mannich condensation products prepared by the condensation of a compound having the formula: ##STR1## wherein R is hydrogen, lower alkyl having 1 through 6 carbon atoms, hydroxy or lower alkoxy having 1 through 6 atoms; R.sup.1 is polyalkyl having an average molecular weight of about from 400 to 5000 and n is 0 or a whole integer of from 1 through 10 with ammonia, alkylamine, or polyamine and an aldehyde. The condensation products and their fuel-soluble salts are useful as fuel additives for the prevention and control of engine deposits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.