Method for coloring lac and acid lac alcohol solution

A technology of shellac and solution, which is applied in the field of coloring of shellac and its alcohol solution, which can solve the problems of coagulation and precipitation, difficulty in using coloring, and inability to color pigments

Active Publication Date: 2009-12-23
天津天康源生物技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of acidic shellac alcohol solutions in coloring is very difficult
For example: add water to the solution (in the case of coloring with water-soluble pigments), shellac will coagulate and precipitate; add insoluble pigments, all pigments will precipitate and cannot be colored; pigments that are insoluble in acid cannot be used, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022] Example 1: Red gravure printing ink

[0023] microcrystalline cellulose

[0024] Citric Acid (Crystalline)

[0025] Stir and mix microcrystalline cellulose, purple cabbage extract pigment solution and citric acid to make the pH value 2.5-3. Mix the whole evenly, put it into the pre-dissolved shellac alcohol solution and mix thoroughly, and filter properly as needed to remove excessively long cellulose. The pigment solution obtained in this way ensures stability and does not cause deterioration of the ink.

example 2

[0026] Example 2: Orange screen printing ink

[0027] Noranthin potassium salt solution

[0028] Stir and mix norbiscus potassium salt solution and microcrystalline cellulose, slowly pour into the shellac solution dissolved in ethanol in advance and mix, then add propylene glycol and mix. The ink for screen printing made in this way will not deteriorate with the shellac alcohol solution, and the potassium salt of noranthin can stabilize the orange color.

example 3

[0029] Example 3: Paint

[0030] Aqueous solution of carmine acid

[0031] Add sulfuric acid to the carminic acid aqueous solution to make it acidic, add microcrystalline cellulose to make a lump, add it to the shellac alcohol solution, stir and disperse, and obtain a red paint.

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PUM

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Abstract

This invention relates to a method which is able to high efficiency color shellac and acidy shellac alcohols solution, lend itself to industrial production. This invention has follow steps: (1) first prepare shellac alcohols solution, add acidoid, adjust ph value for acidic; (2) Add micro crystalline cellulose prestained to above solution, the dosage is 0.1 to 40 percent of shellac alcohols solution weight. (3) Uniform mixing above solution; adopt whip vibration or neutral gas aeration method. The finished product is able to use as different kinds of toner, ink and dope for staining. Drying the liquid is able to obtain stained shellac.

Description

technical field [0001] The invention relates to the field of natural resin shellac, more specifically, relates to a method suitable for industrial production and capable of efficiently coloring shellac and its alcohol solution. Background technique [0002] As we all know, shellac is a widely used production material for vinyl records, varnishes, inks, electrical insulation materials, sealing wax, etc. Shellac is in the form of solid, and it is generally applicable after being dissolved and diluted with alcohol or other solvents. Typically used to balance pigment uniformity. However, the use of acidic shellac alcohol solutions in coloring is very difficult. For example: adding water to the solution (in the case of coloring with water-soluble pigments), the shellac will coagulate and precipitate; add insoluble pigments, all the pigments will precipitate and cannot be colored; pigments that are insoluble in acid cannot be used, and so on. Therefore, a method of efficiently ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/20C08L93/02
Inventor 郑慧英
Owner 天津天康源生物技术有限公司
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