Process for purifying acrylamides
US3947518A · kind A · utility
2Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1974 |
| Grant date | Mar 30, 1976 |
| Priority date | — |
| Expiry date | Apr 29, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C233/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Process for purifying an acrylamide including the steps of (1) adding an inorganic base (excluding ammonia) to an aqueous solution containing 15 to 60% by weight of the acrylamide at a temperature of up to 60.degree.C in an amount of 0.1 to 1.5 wt. % based on the acrylamide and (2) blowing a gas, inert to the acrylamide, into the resulting mixture at a hydrogen ion concentration of a pH of 12 to 13.7 and if necessary, (3) subjecting the so treated acrylamide solution to an active carbon adsorption treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.