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Production of cobalt-titanium series random chromo pigment

A technology of flop and pigment, which is applied in the field of preparation of cobalt-titanium series flop pigments, and can solve the problems of many coating layers, complicated preparation process and environmental pollution.

Active Publication Date: 2009-02-18
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has too many cladding layers, the preparation process is complicated, and because of the use of chromium solution, it will pollute the environment

Method used

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  • Production of cobalt-titanium series random chromo pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Weigh 3g of mica titanium with a mass fraction of titanium dioxide of 30% and put it into the reactor, add 6g of concentrated sulfuric acid and 6g of concentrated phosphoric acid mixture, reflux at 85°C for 4h, wash with deionized water until the pH of the eluate is approximately equal to 2. Without drying, directly add 10ml of 10% NaOH solution, reflux at 80°C for 2h, wash and dry. Weigh 1g of pretreated mica titanium, add 25ml of deionized water, heat with circulating water at 74°C, reflux, adjust the pH value of the solution to approximately 10.0 with very dilute ammonia water, add 1.6ml at a rate of 1-2 drops / 2min 10% Co(NO 3 ) 2 solution, while adjusting the pH value of the solution with 10% NaOH solution and dilute ammonia water to keep it between 9.5 and 10.5. Keep the reaction temperature constant, age for 40min, wash, filter, dry at 120°C for 1h, put it into a muffle furnace and roast at 900°C for 60min, heat out, and cool to room temperature naturally. The ...

Embodiment 2

[0010] Weigh 3g of mica titanium with a mass fraction of titanium dioxide of 40% and put it into the reactor, add 4g of hydrofluoric acid and 4g of concentrated phosphoric acid mixture, reflux at 85°C for 4h, wash with deionized water until the pH value of the eluate is approximately equal to 2 . Without drying, directly add 10ml of 10% NaOH solution, reflux at 80°C for 2h, wash and dry. Weigh 1g of pretreated mica titanium, add 25ml of deionized water, heat with circulating water at 74°C, reflux, adjust the pH value of the solution to about 9.5 with very dilute ammonia water, add 1ml of 10 at a rate of 1-2 drops / 2min %Co(NO 3 ) 2 solution, while adjusting the pH value of the solution with 10% NaOH solution and dilute ammonia water to keep it between 9.5 and 10.5. Keep the reaction temperature constant, age for 40min, wash, filter, dry at 120°C for 1h, put it into a muffle furnace and roast at 900°C for 40min, heat out, and cool to room temperature naturally. The apparent ...

Embodiment 3

[0012] Weigh 3g of mica titanium with a titanium dioxide mass fraction of 60% and put it into a reactor, add 4g of concentrated nitric acid and 4g of concentrated phosphoric acid mixture, reflux at 85°C for 4h, and wash with deionized water until the pH of the eluate is approximately equal to 2. Without drying, directly add 10ml of 10% NaOH solution, reflux at 80°C for 2h, wash and dry. Weigh 1g of pretreated mica titanium, add 25ml of deionized water, heat it with circulating water at 80°C, reflux, adjust the pH value of the solution to about 10 with very dilute ammonia water, add 2.0ml at a rate of 1-2 drops / 2min 10% Co(NO 3 ) 2 solution, while using 10% NaOH solution and ammonia water to adjust the pH value of the solution between 9.0 and 10. Keep the reaction temperature constant, age for 40min, wash, filter, dry at 120°C for 1h, put it into a muffle furnace and roast at 900°C for 60min, heat out, and cool to room temperature naturally. The powder color obtained is a go...

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Abstract

Production of cobalt-titanium series chromo pigment is carried out by pre-treating for substrate material, taking pretreated mica titanium as substrate material, depositing cobaltous hydroxide onto mica titanium surface by wet chemical method, controlling solution acidity and alkalinity, ageing, and converting cobaltous hydroxide into CoO by burning to obtain the final product. It's non-toxic, cheap and simple, has stable performance and no environmental pollution. It can be used for cosmetics, printing ink, coating, building materials and ceramics.

Description

technical field [0001] The invention relates to a preparation method of cobalt-titanium series color-dependent pigments. Background technique [0002] The angle-dependent pigment refers to the color of the pigment changes with the different viewing angles under the irradiation of light, or the color of the pigment changes accordingly when the viewing angle remains unchanged and the illumination angle of the light source is changed. This kind of pigment is widely used in industries such as cosmetics, inks, paints, building materials, and ceramics, as well as anti-counterfeiting marks such as currency, certificates, trademarks, and securities. [0003] According to the search, the methods for preparing the angle-variable pigments mainly include: (1) US Patents US4705300, US4705356, US5084351, etc. adopt the physical vapor deposition method, that is, the Fabry-Perot stacking method (FP method for short). The angle-dependent pigment obtained by this method has a double sandwich...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C3/06C09C1/36
Inventor 孙家跃杜海燕陈启荣
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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