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Preparation method of EVA wax-based composite spherical pigment yellow 14 that is easy to filter

A pigment yellow and wax-based technology, applied in chemical instruments and methods, organic dyes, azo dyes, etc., can solve the problems of unfavorable pigment packaging, unfavorable sanitary conditions, and poor dispersibility

Active Publication Date: 2021-04-16
宇虹颜料股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large pieces of pigment are crushed, which consumes a lot of energy
In addition, the dust formed by the pulverized fine particle pigment is also more, which is unfavorable to the hygienic condition of the pulverization process.
Pigment fine powder is easy to fly, which is also unfavorable to the packaging of pigments
[0011] (4) The dry filter cake of large pigments, even after strong pulverization, is often not easy to mix with the applied dispersion medium, and the dispersibility is not very good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Pretreatment EVA wax method.

[0030] The adding mass of pretreatment agent Cattles ES is 5% of the mass of EVA wax.

[0031] Dissolve 2.5g of pretreatment agent Cattles ES in 150mL of water, then add 50g of EVA wax to stir and mix for adsorption pretreatment. The pretreatment temperature is 30°C and the pretreatment time is 2 hours. Then filter, the filter cake is the pretreated EVA wax. This pretreated EVA wax is numbered EVA-1.

Embodiment 2

[0033] Pretreatment EVA wax method.

[0034] The adding mass of pretreatment agent Cattles ES is 1% of the mass of EVA wax.

[0035] Dissolve 0.5g of pretreatment agent Cattles ES in 150mL of water, then add 50g of EVA wax to stir and mix for adsorption pretreatment. The pretreatment temperature is 20°C and the pretreatment time is 1 hour. Then filter, the filter cake is the pretreated EVA wax. This pretreated EVA wax is numbered EVA-2.

Embodiment 3

[0037] Pretreatment EVA wax method.

[0038] The adding mass of pretreatment agent Cattles ES is 10% of the mass of EVA wax.

[0039] Dissolve 5g of pretreatment agent Cattles ES in 150mL of water, then add 50g of EVA wax to stir and mix for adsorption pretreatment. The pretreatment temperature is 45°C and the pretreatment time is 3 hours. Then filter, the filter cake is the pretreated EVA wax. This pretreated EVA wax is numbered EVA-3.

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PUM

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Abstract

The invention relates to a preparation method of EVA wax-based composite spherical pigment yellow 14 which is easy to filter. In the aqueous phase suspension of Pigment Yellow 14 after the coupling reaction for preparing Pigment Yellow 14 is completed, the temperature is controlled at 75-90°C, and the pretreated EVA wax is added under stirring; the suspended pigment particles in the water phase are mixed with the EVA wax Mixed and adsorbed to obtain spherical pigment yellow 14 with a core-shell structure. Pigment Yellow 14 obtained in the present invention is a spherical particle, easy to filter, and the decompression suction filtration time only takes 1-3 minutes; at the same time, there is little water absorbed on the surface of the pigment, and the water content of the wet filter cake of the pigment after decompression suction filtration is 10-20 %, so the pigment is easy to filter and easy to dry, just dry it in an oven at 45-50°C for 2 hours. After drying, the pigment particles are loose, not agglomerated, and easy to break. The pigment preparation process is easy to operate, saves water and energy, and is suitable for industrial production. The coloring power of the pigment is above 110%.

Description

technical field [0001] The invention belongs to the field of organic pigment preparation, and the specific content of the invention relates to a preparation method of EVA wax-based composite spherical pigment yellow 14 which is easy to filter. Background technique [0002] Organic pigments are mainly used in printing ink industry, paint industry, plastics and textile fibers, and the demand for azo pigments is the largest. Among the yellow benzidine yellow organic pigments, the main varieties are C.I. Pigment Yellow 12, Pigment Yellow 13, Pigment Yellow 14, Pigment Yellow 17 and Pigment Yellow 83. [0003] Pigment Yellow 14 is a green light yellow powder with bright shade, strong tinting power and good transparency. It is one of the important varieties of benzidine yellow organic pigments. It is slightly greener than Pigment Yellow 12, and greener than the European color standard; the tinting strength is lower than C.I. Pigment Yellow 13, and the light fastness is 1-2; the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09B29/33C09B67/36C09B67/08
CPCC09B29/33C09B67/0013C09B67/0079C09B67/0096Y02P20/10
Inventor 张天永李彬姜爽杨靓怡吕东军
Owner 宇虹颜料股份有限公司