Composite reactive light yellow dye composition

Abstract

The invention discloses a composite reactive light yellow dye composition which mainly comprises a Formula I compound and a Formula II compound in a mole ratio of 1:(0.1-10), wherein Y is -SO3Na, and the Y group is meta-position or para-position. The dye can be used for a printing technique of an automatic sizing system, and the direct Rf value is 0.9; and the composite-structure bright yellow dye has the advantages of moderate reactivity and favorable color light controllability. The dye has favorable dye lifting power and high product solubility, the 2-DEG C solubility is greater than 200 g/L, and the dyeing deepness is 1/1. The fastness to light is Grade 6, the fastness to soaping is Grade 4-5, the fastness to perspiration is Grade 4-5, the fastness to chlorine water soaking is Grade 4, the fastness to dry rubbing is Grade 4-5, the fastness to wet rubbing is Grade 4, the fastness to ironing is Grade 4, and thus, the product has better properties than the traditional reactive light yellow dye. The dye has favorable printing lifting power, the strength is more than 2 times of the reactive light yellow K-6G, the printing color paste sewage is free of inorganic salts, and the content of hydrolytic dyes is low, thereby being beneficial to energy saving and environment friendliness.

Description

technical field [0001] The invention belongs to the technical field of dyes, and relates to a novel composite reactive bright yellow dye and a manufacturing method thereof. Background technique [0002] Commonly used printing reactive bright yellow dyes are generally derived from the diazonium salt and pyrazolone obtained after diazotization of the primary condensation product of cyanuric chloride and 2,4-diaminobenzenesulfonic acid (or m-phenylenediamine disulfonic acid). compound or derivatives of pyridone for coupling, then add ammonia water or p-(m)aminobenzenesulfonic acid or p-(m) ester for secondary condensation, and obtain the dye matrix after salting out or nanofiltration drying, such as reactive bright yellow K- 6G (CI. Active Yellow 2#), Active Bright Yellow K-4G (CI. Active Yellow 18#), Active Bright Yellow H-8G (CI. Active Yellow 85#), Active Bright Yellow M-E4Gl (CI. Active Yellow 160# ), etc., this kind of reactive bright yellow dye with a single structure ha...

AI Technical Summary

Problems solved by technology

[0002] Commonly used printing reactive bright yellow dyes are generally derived from the diazonium salt and pyrazolone obtained after diazotization of the primary condensation product of cyanuric chloride and 2,4-diaminobenzenesulfonic acid (or m-phenylenediamine disulfonic acid). compound or derivatives of pyridone for coupling, then add ammonia water or p-(m)aminobenzenesulfonic acid or p-(m) ester for secondary condensation, and obtain the dye matrix after salting out or nanofiltration drying, such as reactive bright yellow K- 6G (CI. Active Yellow 2#), Active Bright Yellow K-4G (CI. Active Yellow 18#), Active Bright Yellow H-8G (CI. Active Yellow 85#), Active Bright Yellow M-E4Gl (CI. Active Yellow 160# ), etc., this kind of reactive bright yellow dye with a single structure has low strength, contains a lot of inorganic salts, has poor solubility at low temperature, and is not suitable for automatic mixing systems

At the same time, the dye lifting power is low, the color fixing rate is poor, and the discharge of COD and inorganic salts in the dyeing and finishing wastewater is high, which is not conducive to environmental protection

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