Process for preparing herbicidal N-methylol derivatives of 4-amino-1,2,4-triazine-5-ones
US4759795A · kind A · utility
0Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 5, 1986 |
| Grant date | Feb 26, 1988 |
| Priority date | — |
| Expiry date | May 5, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N43/707
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
N-Methylol derivatives of herbicidal 4-amino-1,2,4-triazine-5-ones can be prepared by reacting formaldehyde with a 4-amino-1,2,4-triazine-5-one slurried in water under basic conditions. The N-methylol derivatives can be surface-modified by slurrying particles of the derivatives in water and treating with a strong acid or strong base, producing a product that releases the original herbicidal 4-amino-1,2,4-triazine-5-one in a controlled manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.