Process for preparation of amides of unsaturated cyclic keto acids
US4495077A · kind A · utility
2Cited by
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18Claims
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Key dates
| Filing date | Jan 28, 1983 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Jan 28, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2215/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Amides of unsaturated cyclic keto acids, useful as friction improvers in lubricating oils, may be prepared by reaction of an amine such as ethanolamine with an unsaturated cyclic keto acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.