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Novel chromium-tin purple dye and its preparing method

A new method and pigment technology, applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve the problems of difficult preparation, unstable crystal form, coarse particle size of raw materials, etc., to reduce sintering reaction conditions, color and luster Pure and stable effect

Inactive Publication Date: 2007-01-24
胡秋帆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem caused by this method of preparing purple material is that due to the coarse particle size and wide distribution of the raw material, the requirements for the sintering reaction are high, the crystal form is unstable, it is not easy to prepare, the hue is partial, and it is unstable.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Get 15 parts of stannous chloride and dissolve in 45 parts of water, add 0.5 part of neodymium chloride, 0.07 part of alkylphenol polyoxyethylene ether dispersant, 0.4 part of carboxymethylcellulose sodium viscosity agent, adjust the pH value to 2, Take 0.5 part of sodium dichromate and dissolve it in 20 parts of water, drop it into the above solution within 3 minutes, and react at 65°C for 2 hours. Add 0.3 parts of potassium alum, precipitate for 5 hours, dry at 100°C for 30 minutes, and sinter at 1250°C to obtain the purple pigment of the present invention.

Embodiment 2

[0018] Get 45 parts of stannous chloride and dissolve in 40 parts of water, add 1.5 parts of yttrium sulfate, 0.1 part of alkylphenol polyoxyethylene ether dispersant, 1 part of sodium carboxymethylcellulose viscosity agent, adjust the pH value to 2, Dissolve 1.4 parts of chromium trioxide in 13 parts of water, add dropwise to the above solution within 3 minutes, and react at 65°C for 2 hours. Add 1 part of potassium alum, precipitate for 5 hours, dry at 75°C for 30 minutes, and sinter at 1300°C to obtain the purple pigment of the present invention.

Embodiment 3

[0020] Take 20 parts of stannous sulfate and dissolve in 45 parts of water, add 3 parts of praseodymium sulfate, 0.7 parts of sodium methylene bis-naphthalene sulfonate dispersant, add 2 parts of polyvinyl alcohol viscosity agent, adjust the pH value to 5, take heavy chromium Dissolve 5 parts of ammonium acid in 20 parts of water, add to the above solution within 2 minutes, react at 45°C for 2.5 hours, add 2 parts of polyacrylamide precipitation agent, precipitate for 4 hours, dry at 100°C for 30 minutes, and sinter at 1350°C , to obtain the purple pigment of the present invention.

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PUM

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Abstract

The present invention discloses one new kind of chromium-tin purple dye and its wet preparation process. The chromium-tin purple dye is prepared with tin salt, chromium oxide or salt, RE metal compound, precipitant and dispersant, and through liquid phase reaction and high temperature sintering. The prepared chromium-tin purple dye is RE blended crystal in nanometer level, and has the advantages of high grinding resistance, high heat resistance, high stability, pure color and excellent colorating property. It may be used in glaze and ceramic to result in excellent effect.

Description

technical field [0001] The invention relates to a pigment and a preparation method thereof, in particular to a chrome tin violet pigment and a preparation method thereof. Background technique [0002] Ceramic pigments are the most basic color-emitting substances introduced into ceramic color glazes, and purple pigments are one of the ceramic pigments. The traditional process is to mix, ball mill and sinter oxides of tin and chromium to form tin dioxide It is made by melting chromium into the medium solid, which is commonly known as the dry method. The problems brought about by this method of preparing purple material are that due to the coarse particle size and wide distribution of the raw materials, the requirements for the sintering reaction are high, the crystal form is unstable, it is not easy to prepare, and the hue is partial and unstable. Ceramic pigments are one of the new material varieties urgently needed to be developed in our country. Therefore, it is necessary ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/00C09C1/00
Inventor 胡秋帆赵玛
Owner 胡秋帆
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