Preparation of water-immiscible, acid-soluble N-(aminomethyl)-.alpha.,.beta .
US4297256A · kind A · utility
5Cited by
4References
15Claims
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Key dates
| Filing date | Dec 26, 1979 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Dec 26, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F20/60
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water-immiscible, acid-soluble N-(aminomethyl)-.alpha.,.beta.-ethylenically unsaturated carboxamides such as N-(diethylaminomethyl)acrylamide are readily prepared by (1) reacting under acidic conditions a carboxamide such as acrylamide with a lower aldehyde such as formaldehyde and a moderately water-soluble secondary amine such as diethylamine and (2) recovering the resulting water-immiscible aminomethyl derivative of carboxamide from the acidic reaction mixture by adjusting the pH of the reaction mixture to a value of 7 or higher, whereby the water-immiscible derivative separates from the reaction mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.