Separation of a tris(alkylamino)-s-triazine by-product from chloro-bis(alkylamino)-s-triazines
US4186265A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1978 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Dec 20, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D251/50
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method is provided for separating tris(alkylamino)-s-triazine by-product from chloro-bis(alkylamino)-s-triazines by extracting tris(alkylamino)-s-triazine from an organic solution containing a mixture of tris(alkylamino)-s-triazine and chlorobis(alkylamino)-s-triazine with an aqueous acid solution in the pH-range of 5.4-0.5 and according to a further embodiment of the present invention, treating an alkaline aqueous effluent containing a mixture of chloro-bis(alkylamino)-s-triazine and tris(alkylamino)-s-triazine with an agent capable of reducing the pH value below 5.4 and extracting the chloro-bis(alkylamino)-s-triazine with a water immiscible solvent, the tris(alkylamino)-s-triazine remaining in the aqueous phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.