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Preparation method of organic lake pigment

A technology for organic lakes and pigments, applied in the direction of organic dyes, etc., can solve the problems of low yield of organic lakes and pigments, poor reaction completion, etc., and achieve the effects of improving yield, enhancing yield and improving dispersibility.

Pending Publication Date: 2021-10-08
杭州萧山环保化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through the related technologies mentioned above, when the inorganic heteropolyacid and the water-soluble organic pigment are mixed and reacted, the degree of completion of the reaction is relatively poor, which easily leads to a low yield of organic lake pigment

Method used

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  • Preparation method of organic lake pigment
  • Preparation method of organic lake pigment
  • Preparation method of organic lake pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] An organic colorless pigment, the specific component and weight, as shown in Table 2, by the following steps:

[0042] S1: Sodium tungstate, sodium molybdate, sodium hydrogen phosphate, and 80 ° C, the rate of mixing is 600 r / min, mixed with uniform, mixed with a mixture of 20% hydrochloric acid, mixed, mixed, mixed. 500R / min, mixed with mixed hydraulic acid mixture

[0043] S2: At 85 ° C, the water-soluble pigment is added in the mixture in the mixed solution of the heterocolate, and the weight percent is 20% hydrochloric acid and the pigment auxiliary, the stirring speed is 700 r / min, and the stirring is mixed, and stirring is continued for 2 h A mixture of pigment is obtained;

[0044] S3: Press the color filtrate mixture to give the filter cake and filtrate, washed with water for the filter cake, and the washing time is 30 min, and the water after the washing filter is obtained; the water after the washing filter is mixed with the filtrate to mix stirring After th...

Embodiment 2

[0045]Example 2: An organic silica pigment, the difference from Example 1 is that the specific components and weight are different, and the specific components and weights included are shown in Table 2, including the following steps:

[0046] S1: Sodium tungstate, sodium molybdate, sodium hydrogen phosphate, and 100 ° C, mixed stirred at a rate of 600 r / min, mixed with uniform, mixed with 40% hydrochloric acid in weight, mixed stirring speed 500R / min, mixed with mixed mixture after mixing;

[0047] S2: At 95 ° C, the water-soluble pigment is added in the mixed liquid mixture in the heterocolate, and the weight percentage is 40% hydrochloric acid, and the pigment aid is mixed. The stirring speed is 1600r / min, and the stirring is mixed, and stirring is continued for 1 h. A mixture of pigment was obtained later;

[0048] S3: Press the color filtrate mixture to give the filter cake and filtrate, washed with water for the filter cake, and the washing time is 30 min, and the water...

Embodiment 3

[0049] Example 3: An organic starch, distinguishing with Example 1 in that the weight percentage of hydrochloric acid in the step S1 is 30%, and the hydrochloric acid in the step S2 is 25% by weight of hydrochloric acid.

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Abstract

The invention relates to the technical field of pigment production, and particularly discloses a preparation method of an organic lake pigment. The preparation method comprises the following preparation steps: uniformly mixing sodium tungstate, sodium molybdate, disodium hydrogen phosphate and water at 80-100 DEG C, adding hydrochloric acid, mixing to obtain a heteropolyacid mixed solution, at 85-95 DEG C, adding a water-soluble pigment, hydrochloric acid and a pigment additive into the heteropolyacid mixed solution, uniformly mixing, and standing for 1-2 hours to obtain a lake pigment mixture; carrying out filter pressing on the lake pigment mixture to obtain a filter cake and filtrate, washing the filter cake with water, and recovering to obtain water after washing the filter cake; and uniformly mixing the water after washing the filter cake with the filtrate, filtering, washing the obtained filter residue, mixing with the filter cake, drying, and crushing to obtain the organic lake pigment. The water-soluble pigment comprises at least one of peach essence and rose essence; the weight percentage of the hydrochloric acid is 20-40%; and the preparation method of the organic lake pigment has the advantage of high pigment yield.

Description

Technical field [0001] The present application relates to the field of pigment production, and in particular, to a process for organic colorless starch. Background technique [0002] Organic starchy is an insoluble colored substance generated by some water-soluble dyes in the precipitant or carrier, and the method of forming a chromatograph varies from the dye properties, mainly used in the coloring of ink, plastic, etc. [0003] There are a wide variety of raw precipitates, such as metal salts, organic bases, inorganic heteropolyacids, etc., prepared, organic acid, and water-soluble pigments, which have better colored strength and light-to-light. Fastness, widely used in coloring fields of printing inks, plastics, etc. [0004] Through the above-described related art, during the mixing reaction of inorganic heteropolyacids and water-soluble organic pigments, the reaction completion degree is poor, and it is easy to cause the organic silica pigment yield. Inventive content [00...

Claims

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Application Information

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IPC IPC(8): C09B67/20
CPCC09B67/006
Inventor 罗福文高月芬
Owner 杭州萧山环保化工有限公司
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