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Titanium dioxide pigment and its preparing method

A titanium dioxide and pigment technology, applied in chemical instruments and methods, inorganic pigment processing, fibrous fillers, etc., can solve problems such as the application of zirconium oxide that is not mentioned

Active Publication Date: 2006-05-24
ANHUI JXTB GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] None of the above-mentioned patents mentioned the application of the sequential coating of zirconium oxide, silicon oxide and aluminum oxide in the wet treatment of pigment surface deposition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Dissolve 1500 g of untreated TiO with deionized water 2 Prepare a water suspension of about 600g / l, adjust the pH value of the water suspension to 9.8 with NaOH solution, add 0.3% sodium hexametaphosphate solution, grind for 30 minutes with a sand mill, remove sand, and then, suspend The solution was diluted to 4.7L, the temperature was raised to 60°C, and 9 grams of ZrO was added in the form of zirconium sulfate solution within 1 hour. 2 , adjust the pH to 8 with 15% NaOH solution within 1 hour, ripen for 30 minutes, then add 25.5 g of SiO in the form of sodium silicate solution within 1.5 hours 2 , while using 30% H 2 SO 4 Maintain the pH value at about 9.5, ripen for 30 minutes, then add 30 grams of Al in the form of sodium aluminate solution within 2 hours 2 o 3 , while maintaining the pH value at about 8.0 with an aluminum sulfate solution, aging the suspension for 30 minutes, adjusting the pH value of the suspension to 6.5-7.5, and then aging the resulting mix...

Embodiment 2

[0052] Dissolve 1500 g of untreated TiO with deionized water 2 Prepare a suspension of about 600g / l, adjust the pH value of the suspension to 9.8 with NaOH solution, add 0.3% sodium hexametaphosphate solution, grind with a sand mill for 30min, remove the sand, and then dilute the suspension to 4.7L, the temperature was raised to 60°C, the pH of the suspension was adjusted to 10.0 with NaOH (15%) solution, and then 25.5g of SiO was added in the form of sodium silicate solution within 1.5 hours 2 , while using H 2 SO 4 (30%) maintain the pH value at about 9.5, ripen for 30 minutes, then add 30g of Al in the form of sodium aluminate solution within 2 hours 2 o 3 , while maintaining the pH value at about 8.0 with an aluminum sulfate solution, and aging the suspension for 30 min (10). Adjust the pH value of the suspension to 6.5-7.5, and then age the resulting mixture for 1 to 2 hours. The suspension was aged for 30 minutes, adjusted to pH 7.0 with sulfuric acid, and aged for 3...

Embodiment 3

[0054] The treatment of Example 1 was repeated, and the pigment was micronized with 0.3% trimethylolpropane.

[0055] contrasting pigment

[0056] Use commercially available pigments with the following characteristics:

[0057] Comparative Pigment 1: heavily coated pigment with dense silica

[0058] Comparative Pigment 2: Single Aluminum Coated Pigment for Paint

[0059] Comparative Pigment 3: Uncoated Pigment

[0060] Example 1

[0061] According to the above examples and the above table, it can be seen that the titanium dioxide pigment of the present invention has excellent durability and excellent optical properties.

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PUM

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Abstract

The invention relates to titanium dioxide paint and the method to manufacture that belongs to the improvement of durability and optical properties for titanium dioxide. The titanium dioxide paint includes rutile type or anatase type titanium dioxide particle that includes zirconia, amorphous silica and hydrated alumina coating. Moreover, it has organic coating absorbed or bonding on it.

Description

technical field [0001] This invention relates generally to titanium dioxide pigments, and more particularly to titanium dioxide pigments containing zirconium oxides, silicon oxides and aluminum oxides, which pigments have improved durability and optical properties. Background technique [0002] As an opaque pigment, titanium dioxide is widely used in the paint industry, paper mills and as a matting agent for fibers. In order to improve the application performance of titanium dioxide pigments, they are generally treated with inorganic compounds to improve their properties such as durability, whiteness, color reduction and hiding power. Titanium dioxide pigments used in plastics and outdoor coatings should have excellent pigment performance, and the ideal performance is durability, that is, the ability to prevent yellowing and chalking. In order to improve weather resistance, titanium dioxide pigments are often used with one or more Hydrated oxides are coated, especially Si o...

Claims

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Application Information

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IPC IPC(8): C09C3/06C09C1/36
Inventor 周华李翃翔李后明魏柯伍罗兴云沈洪华
Owner ANHUI JXTB GRP
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