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Preparation method of C.I. pigment yellow 13

A pigment yellow and high-quality technology, which is applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of increasing wastewater COD and high cost, and achieve improved diazotization yield, reduced by-products, and reduced ammonia nitrogen value and the effect of COD

Inactive Publication Date: 2016-06-15
SHANGYU DAXIN COLOR CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a better coupling effect can be obtained, on the one hand, the cost will be higher, and on the other hand, the COD of the wastewater will be increased

Method used

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  • Preparation method of C.I. pigment yellow 13
  • Preparation method of C.I. pigment yellow 13
  • Preparation method of C.I. pigment yellow 13

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add 100kg of sulfuric acid into the diazonium pot, start stirring, add 460kg of 28% nitrosyl sulfuric acid, cool down to 20°C, start to add 253kg of 3,3'-dichlorobenzidine, the feeding time is 2 to 3 hours, and the feeding temperature is 15 ~20°C, after adding, keep warm for 2 hours, the temperature is 15-20°C.

[0037] Add 1500kg of water and 3000kg of ice into the dilution pot, start stirring, start diazo dilution, keep the temperature at 5-10°C, dilute for 1-2 hours, when the dilution is complete, keep warm for 15 minutes, add 6kg of urea and 5kg of activated carbon, and stir After 15 minutes, press filter for standby use.

[0038] Add 500kg of water, 6kg of MF, and 6kg of Pingping into the beating pot, start stirring at a stirring speed of 600rpm, put in 410kg of 2,4-dimethylbisacetanilide, beat for 1 to 2 hours, and then enter the coupling pot through a high-pressure homogenizer , Add 500kg of water to the coupling pot in advance and start stirring. After the homo...

Embodiment 2

[0040] Add 45kg of sulfuric acid into the diazonium pot, start stirring, add 515kg of 25% nitrosyl sulfuric acid, cool down to 20°C, start adding 253kg of 3,3'-dichlorobenzidine, the feeding time is 2 to 3 hours, and the feeding temperature is 15 ~20°C, after adding, keep warm for 2 hours, the temperature is 15-20°C.

[0041] Add 1200kg of water and 3500kg of ice into the dilution pot, start stirring, start diazo dilution, keep the temperature at 5-10°C, dilute for 1-2 hours, after the dilution is complete, keep warm for 15 minutes, add 5.6kg of sulfamic acid and 2.5kg clay, stirred for 15 minutes, and began to press filter for later use.

[0042]Add 800kg of water, 4.1kg of MF, and 4.1kg of Pingpingjia into the beating pot, start stirring at a stirring speed of 500rpm, add 389.5kg of 2,4-dimethylbisacetanilide, beating for 1 to 2 hours, and then pass through a high-pressure homogenizer into the In the coupling pot, add 500kg of water to the coupling pot in advance and start ...

Embodiment 3

[0044] Add 275kg of sulfuric acid into the diazonium pot, start stirring, add 286kg of 45% nitrosyl sulfuric acid, cool down to 20°C, start to add 253kg of 3,3'-dichlorobenzidine, the feeding time is 2 to 3 hours, and the feeding temperature is 15 ~20°C, after adding, keep warm for 2 hours, the temperature is 15-20°C.

[0045] Add 1300kg of water and 3200kg of ice into the dilution pot, start stirring, start diazo dilution, keep the temperature at 5-10°C, dilute for 1-2 hours, after the dilution is complete, keep warm for 15 minutes, add 12.65kg of urea and 7.5kg of diatoms soil, stirred for 15 minutes, and began to press filter for later use.

[0046] Add 800kg of water, 20.5kg of MF, and 20.5kg of Pingpingjia into the beating pot, start stirring at a stirring speed of 800rpm, put in 430.5kg of 2,4-dimethylbisacetanilide, beat for 1 to 2 hours, and then pass through a high-pressure homogenizer into the In the coupling pot, add 500kg of water to the coupling pot in advance an...

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Abstract

The invention provides a preparation method of C.I. Pigment Yellow 13. In the method, nitrosyl sulfuric acid is used for diazotization of diazo, and then 2,4-dimethylbisacetanilide is subjected to beating, high-pressure homogenization, and then dropwise adding heavy Nitrogen solution, pH adjusted with trisodium phosphate. The finally prepared C.I. Pigment Yellow 13 has uniform particle size, soft particles, high tinting strength, stable performance, good light resistance and solvent resistance, and good migration resistance in plastics.

Description

technical field [0001] The invention relates to the technical field of pigment preparation, in particular to a preparation method of C.I. Pigment Yellow 13. Background technique [0002] With the development of fine chemicals, the development of organic pigments is extremely rapid. The annual output of organic pigments has doubled from 210,000 tons in 2000 to 468,400 tons in 2010. Organic pigments are widely used in many industries such as printed matter, automobile manufacturing industry, coating industry, polymer material processing industry and textile fiber. Yellow organic pigment (Pigment Yellow) is one of the most popular varieties. From the 1950s to the present, researchers have continuously improved the synthesis process and application performance of organic pigment yellow, gradually expanding its application fields. [0003] There are many kinds of organic pigment yellows, mainly including isoindolinone pigments, benzimidazolone pigments, benzidine yellow pigm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B35/10C09B35/035
CPCC09B35/105
Inventor 陈建新孙庆伟倪越彪章立新
Owner SHANGYU DAXIN COLOR CHEM CO LTD
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