Manufacture of concentrated aqueous (meth)acrylamide solutions by catalytic addition of water to (meth)acrylonitrile
US3956387A · kind A · utility
5Cited by
5References
6Claims
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Key dates
| Filing date | Apr 10, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Apr 10, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/72
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
By adding water to (meth)acrylonitrile there is formed a concentrated aqueous (meth)acrylamide solution, the addition being effected in the presence of a heterogeneous catalyst at elevated temperature and in aqueous (meth)acrylamide/(meth)acrylonitrile solution at an initial ratio of amide to nitrile of from 1:1 to 1:7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.