Process for preparing methylolated hydantoins
US4908456A · kind A · utility
7Cited by
1References
20Claims
0Family size
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Inventors
Key dates
| Filing date | Apr 5, 1989 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Apr 5, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D233/78
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for making methylolated hydantoins by reacting a hydantoin, a formaldehyde such as paraformaldehyde and an alkaline catalyst at conditions of temperature and pressure sufficient to induce reaction to obtain a product in essentially 100% active form. Dry methylolated hydantoin product made by this process may be stored or shipped more economically than an aqueous solution containing a methylolated hydantoin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.