128-99-4Relevant articles and documents
Active brilliant blue K-GR method for the preparation of intermediates
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Paragraph 0040-0042, (2017/05/18)
The invention provides a preparation method of a reactive brilliant blue K-GR intermediate. The preparation method comprises following steps: carrying out a condensation reaction between bromamine acid and 2,4-diaminobenzene sulfonic acid or sodium 2,4-diaminobenzene sulfonate with a catalyst system containing a cuprous complex for catalyzing the reaction to obtain the reactive brilliant blue K-GR intermediate (sodium 1-amino-4-((4-amino-3-sulfonylphenyl)amino)-anthraquinone-2-sulfonate). By means of the preparation method of the reactive brilliant blue K-GR intermediate, 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.
Triazine compounds and method for dyeing or printing fiber materials using the same
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, (2008/06/13)
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.