Process for the preparation of fluorotriazine using alkali metal fluoride salts
US4843148A · kind A · utility
2Cited by
10References
7Claims
0Family size
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Key dates
| Filing date | Dec 23, 1986 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Dec 23, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of reactive dyes of the formula ##STR1## in which D, R and Z are as defined in greater detail in the description, which comprises subjecting 2,4,6-trifluoro-s-triazine to a condensation reaction in a strongly acid solution and in the presence of an alkali metal fluoride with an amine of the formula EQU H--Z (3) and then subjecting the primary condensation product obtained to a condensation reaction with an amino dye of the formula ##STR2## affords reactive dyes of the formula (1) in a high yield and a high state of purity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.