Preparation method of Metanil yellow G

An acid golden yellow, production method technology, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problem of undisclosed technical data, and achieve the goal of improving output and quality, reducing production, and protecting the environment. Effect
CN104250451AInactive Publication Date: 2014-12-31TIANJIN DAGANG DYEING FACTORY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN DAGANG DYEING FACTORY
Publication Date
2014-12-31
Estimated Expiration
Not applicable · inactive patent

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Abstract

A preparation method of Metanil yellow G comprises the steps of a diazotization reaction, a coupling reaction, roller drying, crushing and mixing packaging. The method can effectively reduce the output of byproducts in the production process in order to improve the output and the quality of a product and effectively protect environment.
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Description

(1) Technical field

[0001] The invention relates to a direct dye production process, in particular to a production method of acid golden yellow G. (2) Background technology

[0002] At present, acid golden yellow G is one of the main golden dye varieties, mainly used in dyeing agent, acid-base indicator, coloring of soap and dyeing of silk, wool, paper, leather, etc. However, in the production process of acid golden yellow G, the output and quality of the product are not high when the existing process is produced, which causes the production of by-products in the synthesis process to increase, and these by-products will reduce the quality of the product and pollute the environment. . The production method of acid golden yellow G involved in this invention can effectively reduce the amount of by-products produced in the production process, thereby improving the output and quality of the product, and at the same time effectively protecting the environment. At present, no sim...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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