- Method for preparing bromine ammonia blue
-
The invention provides a preparation method of bromine ammonia blue. The preparation method comprises following steps: carrying out a condensation reaction between bromamine acid and 2,4,6-trimethyl-3,5-diaminobenzenesulfonic acid with a catalyst system containing a cuprous complex for catalyzing the reaction and then performing seperation to obtain the product bromine ammonia blue (sodium 1-amino-4-((3-amino-2,4,6-trimethyl-5-sulfonylphenyl)amino)-anthraquinone-2-sulfonate) after the reaction finished. By means of utilization of the catalyst system containing the cuprous complex, usage amounts of cuprous chloride and copper powder can be effectively reduced, thereby reducing the content of heavy metals in a dye product, reducing the content of heavy metals in waste water and reducing environmental pollution and production cost. In addition, the preparation method can avoid generation of a hydrolyzed by-product (a purple by-product) of the bromamine acid, can greatly reduce the generation of a debromination by-product, can significantly reduce the generation of a double-condensation substance, can increase yields of the condensation reaction and the dye product and can reduce discharge amount of waste water containing acids and being high in chroma.
- -
-
Paragraph 0006; 0041-0043
(2017/01/17)
-
- the bromine ammonia acid is fragrant amine synthesis of anthraquinone type dye or chromophore method
-
The invention provides a method for synthesizing anthraquinone type dye or chromophore by aromatic amination of bromamine acid. The method comprises the following steps: catalyzing a condensation reaction of bromamine and arylamine in a solvent by adopting a catalyst system containing cuprous complex. According to the method, the cuprous complex is used as the catalyst system, nearly 100% conversion of the bromaine acid can be realize, no bromamine acid hydrolyzed (purple byproduct) or debrominated byproduct is generated, generation of by products is remarkably reduced, the yield of condensation products is remarkably increased, emission of acid-containing wastewater with deep chromaticity is reduced; and copper powder is not used, the usage of catalyst can be reduced, the content of heavy metals in the condensation products can be reduced, the content of heavy metals in wastewater can be reduced, environmental pollution can be reduced, and production cost can be reduced.
- -
-
Paragraph 0097-0183
(2017/10/20)
-
- Triazine compounds and method for dyeing or printing fiber materials using the same
-
A triazine compound which is useful for dyeing or printing materials containing hydroxyl group and/or amide group, and which has the following formula (I) or salts thereof STR1 wherein R represents hydrogen or unsubstituted or substituted alkyl; R1 represents hydrogen, an alkyl unsubstituted or substituted by carboxy, sulfo, alkoxy, halogeno, sulfato or hydroxy, or --Y--SO2 Z3 ; R2 represents hydrogen or unsubstituted or substituted alkyl; A represents unsubstituted or substituted phenylene or naphthylene; Y represents a divalent group which is C2 -C7 alkylene and so on; Z1, Z2 and Z3 independently of one another are each --CH=CH2 or --CH2 CH2 Z' wherein Z' is a group capable of being split by the action of an alkali; and F is any one of the dye residue which is anthraquinone, azo, disazo, trisazo or phthalocyanine nucleus and so on, and a process for dyeing or printing fiber materials which comprises using said triazine compounds or salts thereof.
- -
-
-