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Preparation method of color master batch titanium dioxide

A technology of titanium dioxide and color masterbatch, applied in chemical instruments and methods, dyeing physical treatment, dyeing organic silicon compound treatment, etc., to achieve high application performance and good covering effect

Inactive Publication Date: 2012-06-27
江苏镇钛化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to address the defects of low whiteness, poor dispersibility, poor hiding power, poor processability, high torque, high viscosity and poor fluidity of the existing general-purpose titanium dioxide in the plastic masterbatch system , to provide a method for preparing a masterbatch titanium dioxide that has higher application performance in the plastic masterbatch system and improves the above defects

Method used

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  • Preparation method of color master batch titanium dioxide
  • Preparation method of color master batch titanium dioxide
  • Preparation method of color master batch titanium dioxide

Examples

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example 1

[0016] Use sulfuric acid rutile titanium dioxide without surface treatment, add deionized water to make a slurry with a concentration of about 700g / l, add 0.2-0.3% sodium silicate, and disperse by sand milling at 2000rpm for 60 minutes. Add a certain amount of deionized water to the dispersed slurry and dilute it to 300g / l, and pass the slurry through a 300-mesh screen. The temperature of the slurry was raised to 65°C, and sodium metaaluminate solution and sulfuric acid solution were added simultaneously at pH 8.5 for 60 minutes, and the amount of sodium metaaluminate solution was 2% as Al2O3 (calculated based on TiO2 mass). The slurry was aged at pH 8.5 for 60 minutes at a temperature of 65°C to further age the inorganic-coated alumina hydrate film. After the aging is completed, sulfuric acid solution is added to adjust the final pH to 7.0. Finally, the inorganically treated slurry is washed with water and dried. In the jet crushing stage, an organic treatment agent is adde...

example 2

[0018] Use sulfuric acid rutile titanium dioxide without surface treatment, add deionized water to make a slurry with a concentration of about 700g / l, add 0.2-0.3% sodium silicate, and disperse by sand milling at 2000rpm for 60 minutes. Add a certain amount of deionized water to the dispersed slurry and dilute it to 300g / l, and pass the slurry through a 300-mesh screen. Raise the temperature of the slurry to 65°C, adjust the pH of the slurry to 5.5 with sulfuric acid solution, add aluminum sulfate solution and sodium hydroxide solution at the same time at this pH, the time is 60 minutes, and the amount of aluminum sulfate solution is 2% based on Al2O3 (Based on TiO2 mass calculation). The slurry was aged at pH 5.5 for 60 minutes at a temperature of 65° C. to further age the inorganic-coated alumina hydrate film. After the slaking is completed, sodium hydroxide solution is added to adjust the final pH to 7.5. Finally, the inorganically treated slurry is washed with water and ...

example 3

[0020] Use sulfuric acid rutile titanium dioxide without surface treatment, add deionized water to make a slurry with a concentration of about 700g / l, add 0.2-0.3% sodium silicate, and disperse by sand milling at 2000rpm for 60 minutes. Add a certain amount of deionized water to the dispersed slurry and dilute it to 300g / l, and pass the slurry through a 300-mesh screen. The temperature of the slurry was raised to 65°C, and sodium metaaluminate solution and sulfuric acid solution were added simultaneously at pH 8.5 for 60 minutes, and the amount of sodium metaaluminate solution was 1% based on Al2O3 (based on TiO2 mass calculation). The slurry was aged at pH 8.5 for 60 minutes at a temperature of 65°C to further age the inorganic-coated alumina hydrate film. After the aging is completed, sulfuric acid solution is added to adjust the final pH to 7.0. Finally, the inorganically treated slurry is washed with water and dried. In the jet crushing stage, an organic treatment agent ...

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Abstract

The invention relates to a preparation method of color master batch titanium dioxide. The preparation method comprises the following sequential steps of: (1) adding deionized water and sodium silicate to surface-untreated sulfuric acid process rutile type titanium dioxide, and grinding and dispersing; (2) adding deionized water to the dispersed slurry for diluting, and screening with a screen mesh of 300 meshes; (3) heating the slurry to 60-70 DEG C, adjusting the pH of the slurry to 5-8 with H2SO4 solution, and simultaneously adding aluminum sulfate solution and sodium hydroxide solution under the pH condition; (4) aging the slurry at pH of 5-8 and temperature of 60-75 DEG C for 30-120 minutes; (5) after aging is finished, adding NaOH solution to adjust the terminal pH to 6.5-8.5; and (6) washing the inorganically-treated slurry with water, drying, and adding an organic treating agent from a material inlet in a spraying manner in a steam flow crushing stage so as to carry out organic treatment. According to the invention, titanium dioxide has higher application performance in a plastic color master batch system.

Description

technical field [0001] The invention belongs to the technology for producing titanium dioxide by a sulfuric acid method, and in particular relates to a method for preparing the titanium dioxide of the masterbatch, which has better application performance in a plastic color masterbatch system by carrying out inorganic coating and organic coating on the titanium dioxide. Background technique [0002] Color masterbatch refers to the color granules made by uniformly dispersing the pigment into the resin by grinding or twin-screw extrusion in a certain proportion. It has excellent coloring effect, easy automatic metering and transportation, energy saving, no dust, no pollution And other advantages, it is widely used in the coloring of materials such as plastics. As a white pigment with excellent performance, titanium dioxide is widely used in the manufacture of white masterbatch. At present, the technology of color masterbatch is developing towards the direction of high pigment ...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/12C09C3/04C09C3/06C08L23/12C08K9/10C08K9/06C08K3/22
Inventor 王俊秋邱健亭刘俊陈俊
Owner 江苏镇钛化工有限公司
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