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High-dispersed titanium pigment and its production

A technology of titanium dioxide and emulsification dispersant, which is applied in the direction of chemical instruments and methods, inorganic pigment treatment, fibrous fillers, etc., can solve the problems of low water dispersibility, large amount of neutralizing agent, high production cost, etc., and achieve high coating efficiency. Film hiding power and mechanical strength, stable system and low cost

Inactive Publication Date: 2009-04-29
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has complicated process and high cost, and the water dispersibility of the product is less than 90%.
[0005] Due to the serious disadvantages of low water dispersibility in existing products, and its preparation method also has disadvantages such as long time consumption, large amount of neutralizing agent, high production cost, complicated process, and high energy consumption.

Method used

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  • High-dispersed titanium pigment and its production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 Preparation of titanium dioxide of the present invention

[0029] The pigment-grade metatitanic acid slurry is beaten into a solution of 200g / L (calculated as titanium dioxide), and 10 liters are taken, and the mass percentage calculated as potassium oxide is added as metatitanic acid (calculated as TiO2). 2 0.35% of potassium sulfate, calculated as phosphorus pentoxide, the mass percent is metatitanic acid (calculated as TiO 2 Total) 0.2% phosphoric acid, mass percent is metatitanic acid (as TiO 2 meter) 0.35% antimony trioxide, stirring. Add ammonia water to adjust the pH value to 8, adding mass percent is metatitanic acid (using TiO 2 Total) 0.4% of oπ-10.

[0030] Thoroughly stir the obtained liquid, filter it, take the filter cake and calcinate it in a resistance furnace at 930°C, and grind it with a three-head grinder for 1 hour to obtain anatase titanium dioxide A.

Embodiment 2

[0031] Embodiment 2 Preparation of titanium dioxide of the present invention

[0032] The pigment-grade metatitanic acid slurry is beaten into a solution with a concentration of 340g / L (calculated as titanium dioxide), and 10 liters are taken, and the mass percentage is added as metatitanic acid (calculated as TiO2). 2 meter) 0.5% potassium sulfate (calculated as potassium oxide), the mass percentage is metatitanic acid (calculated as TiO 2 0.3% phosphoric acid (calculated as phosphorus pentoxide), the mass percentage is metatitanic acid (calculated as TiO 2 meter) 0.35% antimony trioxide, stirring. Add mass percentage and be the urea of ​​titanium dioxide 5%, add mass percentage again and be metatitanic acid (as TiO 2 Total) 0.3% of oπ-10.

[0033] Thoroughly stir the above-mentioned obtained product, filter, take the filter cake and calcinate it in a resistance furnace at 900°C, and grind it with a three-head grinder for 2 hours to obtain anatase titanium dioxide B.

Embodiment 3

[0034] Embodiment 3 Preparation of titanium dioxide of the present invention

[0035] The pigment-grade metatitanic acid slurry is beaten into a solution of 340g / L (in terms of titanium dioxide), and 10 liters are taken, and the mass percentage calculated in terms of potassium oxide is added as metatitanic acid (in terms of TiO2). 2 0.45% potassium sulfate, the mass percent of metatitanic acid (based on TiO 2 Total) 0.28% phosphoric acid, mass percent is metatitanic acid (as TiO 2 meter) 0.45% antimony trioxide, stirring. Add mass percentage and be the ammonium carbonate of titanium dioxide 3%, add mass percentage again and be metatitanic acid (as TiO 2 Total) 0.2% of oπ-10.

[0036] Thoroughly stir the above-mentioned obtained product, filter it, take the filter cake and calcinate it in a resistance furnace at 950°C, and grind it with a three-head grinder for 2 hours to obtain anatase titanium dioxide C.

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Abstract

A titanium pigment and its production are disclosed. Anatase titanium dioxide content is <99% and water dispersion is <92% and emulsified dispersant 0.1-0.4% is added. It's simple and cheap, less consumption, excellent coating covering powder and mechanical performance. It's convenient for transportation and storage.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a preparation method of highly water-dispersible titanium dioxide. Background technique [0002] Titanium dioxide is one of the most important inorganic pigments and chemical raw materials. Pigment grade titanium dioxide is mainly used in coatings, papermaking, plastics, rubber, latex paint, printing ink, chemical fiber and other industries. Non-pigment grade titanium dioxide is mainly used in enamel, capacitors, welding electrodes, etc. If the water dispersibility of titanium dioxide is not good, it is easy to agglomerate after dispersion in the coating and cause coarsening phenomenon, resulting in stratification; and titanium dioxide with good water dispersibility can make the coating system stable for a long time and facilitate the transportation of the coating And storage and can increase the mechanical properties of the coating film. [0003] In the Chinese pat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/36C09C3/00
Inventor 边悟王兰武许述林杜剑桥王斌穆天柱
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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