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Method for preparing easily filtered EVA (ethylene vinyl acetate) wax-based composite spherical pigment yellow 14

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

Active Publication Date: 2019-11-26
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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Abstract

The invention relates to a method for preparing an easily filtered EVA (ethylene vinyl acetate) wax-based composite spherical pigment yellow 14. The method comprises the following steps: in a water-phase suspension of a pigment yellow 14 after a coupling reaction for preparing the pigment yellow 14, controlling the temperature to 75-90 DEG C, and adding a pretreated EVA wax while stirring; and performing mixing and adsorption on suspended pigment granules in a water phase with the EVA wax, so as to obtain the spherical pigment yellow 14 of a core-shell structure. The pigment yellow 14 providedby the invention is a spherical granular substance and is easy to filter, and the vacuum suction filtration time is only 1-3 minutes; meanwhile, the surface of the pigment adsorbs a small amount of water, and the water content of a wet filter cake of the pigment after vacuum suction filtration is 10-20%, so that the pigment is easy to filter and easy to dry and only needs to be dried for 2 hoursin an oven of 45-50 DEG C; after being dried, the pigment granules are loosened, are not caked and are easy to crush; and the pigment preparation process is simple and convenient in operation, water-saving and energy-saving and applicable to industrial production; and the pigment tinting strength is 110% or greater.

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 Applications(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
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