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Rare earth sulfide and/or rare earth sulfur oxide colorant and preparation method thereof

A technology of rare earth sulfur oxides and rare earth sulfides, applied in chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve the problems of many impurities, unstable color of cerium sulfide, and uneven particle size, and achieve The effect of good particle size uniformity, stable color and stable product performance

Inactive Publication Date: 2019-12-20
包头中科世纪科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the color of cerium sulfide obtained by the above method is unstable, with many impurities and uneven particle size.

Method used

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  • Rare earth sulfide and/or rare earth sulfur oxide colorant and preparation method thereof
  • Rare earth sulfide and/or rare earth sulfur oxide colorant and preparation method thereof
  • Rare earth sulfide and/or rare earth sulfur oxide colorant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0053] The present embodiment provides a kind of method of producing red cerium sulfide coloring agent, comprises the steps:

[0054] (1) Take 0.05mol of cerium carbonate, 0.25mol of sulfur, 0.004mol of sodium carbonate, 0.5mol of solid carbon (activated carbon) and 0.01mol of alumina respectively, fully mix them uniformly, and carry out roasting reaction at 800° C. for 20 hours to obtain cerium sulfide colorant. primary product;

[0055] (2) Add 5 times the quality of water to the initial product of the cerium sulfide colorant, then add sodium hydroxide to adjust the pH value to 8, and fully stir for 0.5h before solid-liquid separation to obtain the treated colorant solid;

[0056] (3) Add ethanol and water to the coloring agent solid after described treatment according to the mixed solution of mass ratio 20:1 composition, then add ammoniacal liquor, pvp, zinc chloride, tetraethyl orthosilicate and sodium silicate successively, so The add-on of ammonia water accounts for 5% ...

Embodiment 2

[0065] The present embodiment provides a kind of method of producing yellow samarium sulfide and samarium oxysulfide mixed coloring agent, comprises the steps:

[0066] (1) Take 0.05mol of samarium carbonate, 0.07mol of sulfur, 0.0035mol of sodium carbonate, 0.3mol of solid carbon and 0.00025mol of sodium borate, mix well, and roast at 1300°C for 1 hour to obtain mixed coloring of samarium sulfide and samarium oxysulfide The initial product of the agent;

[0067] (2) Add 20 times the quality of water to the initial product of the samarium sulfide and samarium oxysulfide coloring agent, then add potassium hydroxide to adjust the pH value to 12, fully stir for 6 hours, and then separate the solid from the liquid to obtain the treated colorant solid ;

[0068] (3) Add ethanol and water to the coloring agent solid after described treatment according to the mixed solution of mass ratio 1:1 composition, add ammoniacal liquor, pvp, zinc nitrate, tetraethyl orthosilicate and sodium s...

Embodiment 3

[0077] Present embodiment provides a kind of method of producing light-colored lanthanum cerium sulfide coloring agent, comprises the steps:

[0078] (1) Take 0.04mol of lanthanum carbonate, 0.8mol of sulfur, 0.01mol of cerium oxide, 0.01mol of lithium carbonate, 5mol of solid carbon and 0.005mol of aluminum chloride, mix well, and roast at 1050°C for 15 hours to obtain lanthanum cerium sulfide Primary products of colorants;

[0079] (2) Add 12 times the quality of water to the initial product of the lanthanum cerium sulfide colorant, then add potassium hydroxide to adjust the pH value to 10, and fully stir for 3.2 hours for solid-liquid separation to obtain the treated colorant solid;

[0080] (3) Add ethanol and water to the coloring agent solid after described treatment according to the mixed solution of mass ratio 10:1 composition, add ammoniacal liquor, pvp, zinc sulfate, tetraethyl orthosilicate and sodium silicate afterwards, described ammoniacal liquor The adding amou...

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Abstract

The invention relates to a rare earth sulfide and / or rare earth sulfur oxide colorant and a preparation method thereof. A rare earth compound, sulfur, an alkali metal compound, solid carbon and an auxiliary agent are used as raw materials, an initial product of the rare earth sulfide and / or rare earth sulfur oxide colorant is obtained by roasting, water is added to the initial product, then an alkaline compound is added to adjust pH, a treated colorant solid is obtained, an alcohol-water mixed solution is added to the treated colorant solid, then ammonia, PVP, a zinc compound, ethyl orthosilicate and sodium silicate are added for treatment, and washing and drying are carried out to obtain the rare earth sulfide and / or rare earth sulfur oxide colorant. The preparation method has mild reaction conditions, simple operation, low cost, and high production efficiency. The rare earth sulfide and / or rare earth sulfur oxide colorant prepared by the method has stable product performance, high saturation, stable chromaticity, and good particle size uniformity.

Description

technical field [0001] The invention relates to the technical field of rare earth sulfide colorants, in particular to a preparation of rare earth sulfide and / or rare earth sulfur oxide colorants and a preparation method thereof. Background technique [0002] At present, the pigments on the market can be divided into two categories: organic pigments and inorganic pigments. Organic pigments have the characteristics of strong coloring power and good dispersibility, but they have the disadvantages of poor hiding power and thermal stability, and under conditions such as sunlight, the chemical bonds are easily broken, thereby releasing carcinogenic aromatic amines and toxic and persistent polychlorinated Biphenyl is a serious hazard to human health. Most of the currently used inorganic red pigments contain heavy metal elements such as cadmium, lead, mercury, etc. that directly endanger human health and the environment. [0003] Because of its excellent coloring performance, non-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C3/06
CPCC01P2002/72C01P2004/03C01P2006/32C01P2006/65C09C1/00C09C3/06
Inventor 董伟耿彪王明魏国华刘庆林张丽红许蓓蓓许悦闫荣毛丽荣
Owner 包头中科世纪科技有限责任公司
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