Preparation of N-(aminomethyl)-.alpha.,.beta.-ethylenically unsaturated carboxamides and their polymers
US4288390A · kind A · utility
3Cited by
6References
11Claims
0Family size
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Key dates
| Filing date | Jun 1, 1979 |
| Grant date | Sep 8, 1981 |
| Priority date | — |
| Expiry date | Jun 1, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
N-(aminomethyl)-.alpha.,.beta.-ethylenically unsaturated carboxamides such as N-(dimethylaminomethyl)acrylamide are readily prepared without coincident production of saturated impurities by reacting at a pH below 7 an .alpha.,.beta.-ethylenically unsaturated carboxamide such as acrylamide or N-substituted derivative such as N-methylolacrylamide with a secondary amine such as dimethylamine, and a lower aldehyde such as formaldehyde when such is required. The resulting aminomethyl carboxamides are polymerized at a pH of 7 or less to form polymers containing essentially no gelled product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.