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Method for preparing pigment changeable colors along with angle in iron, titanium series

A color-dependent and pigment-based technology, which is applied in the field of iron-titanium series color-dependent pigment preparation, can solve problems such as environmental pollution, many coating layers, and complicated preparation process

Inactive Publication Date: 2006-04-19
孙家跃 +2
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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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Weigh 2g of mica titanium with a mass fraction of 60% of titanium dioxide and put it into the reactor, add 4g of concentrated sulfuric acid and 4g 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 it with circulating water at 70°C, reflux, adjust the pH value of the solution to about 4 with very dilute hydrochloric acid, add 0.5ml15 at a rate of 1-2 drops / 2min .03% FeCl 3 solution, while adjusting the pH value of the solution with 10% NaOH solution to keep it between 3.0 and 3.5. 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 850°C for 30min, heat out, and cool to room temperature naturally. A floppy pigment with a coverage rate...

Embodiment 2

[0010] Weigh 2g of mica titanium with a mass fraction of titanium dioxide of 50% 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 it with circulating water at 74°C, reflux, adjust the pH value of the solution to about 4 with very dilute hydrochloric acid, add 1ml of 15.03 at a rate of 1-2 drops / 2min % FeCl 3 solution, while adjusting the pH value of the solution with 10% NaOH solution to keep it between 3.0 and 3.5. Keep the reaction temperature constant, age for 40 minutes, wash, filter, dry at 120°C for 1 hour, put it into a muffle furnace and roast at 850°C for 40 minutes, heat out, and cool to room temperature naturally. A floppy pigment with ...

Embodiment 3

[0012] Weigh 2g of mica titanium with a mass fraction of 30% of titanium dioxide and put it into the reactor, add 4g of concentrated nitric acid and 4g 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 80°C, reflux, adjust the pH value of the solution to about 4 with very dilute hydrochloric acid, add 2.0ml at a rate of 1-2 drops / 2min 15.03% FeCl 3 solution, while using 10% NaOH solution to adjust the pH value of the solution to maintain between 3.0 and 3.5. Keep the reaction temperature constant, age for 40 minutes, wash, filter, dry at 120°C for 1 hour, put it into a muffle furnace and roast at 850°C for 35 minutes, heat out the material, and cool to room temperature naturally. A floppy pigm...

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Abstract

A process for preparing the FeTi-series pigments whose color is changeable with the visual angle includes such steps as providing mica titanium with different interference colors, pretreating, regulating pH value, depositing an iron hydroxide layer on its surface, and calcining to convert iron hydroxide to alpha-Fe2O3.

Description

technical field [0001] The invention relates to a method for preparing iron-titanium series variable-color 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 produced by this method has a double sandwich str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/06C09C1/28
Inventor 孙家跃杜海燕陈启荣
Owner 孙家跃
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