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Preparation method of special titanium dioxide for oily system

A titanium dioxide and system technology, applied in chemical instruments and methods, inorganic pigment treatment, dyed organosilicon compound treatment, etc., can solve the problems of low weather resistance, insufficient temperature resistance of titanium dioxide products, yellowing of ink layer, etc. Achieve the effect of good temperature resistance, high contrast ratio and low oil absorption

Inactive Publication Date: 2013-06-05
江苏镇钛化工有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this technology is that it is coated with unary aluminum, and its weather resistance is relatively low. Trimethylolpropane is used for organic treatment, and the organic treatment process is simple. The temperature resistance of titanium dioxide products is not high enough, and when the quality is not good. Will cause yellowing of the ink layer

Method used

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  • Preparation method of special titanium dioxide for oily system
  • Preparation method of special titanium dioxide for oily system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Add 400g of titanium dioxide to deionized water to make a suspension slurry with a concentration of 650g / l, add sodium hexametaphosphate as a beating dispersant to the suspension slurry, add 0.3% of the weight of titanium dioxide, and stir evenly Finally, adjust the pH value of the slurry to 10 with 100 g / l sodium hydroxide solution, and pump the titanium dioxide suspension slurry into the laboratory Netzsch sand mill for grinding.

[0028] (2) Dilute the sand-milled titanium dioxide suspension slurry to 300g / l with deionized water, and pass the slurry through a 325-mesh vibrating sieve to remove possible small coarse titanium dioxide particles and debris from sand-milled beads and other impurities.

[0029] (3) Heat the above-mentioned titanium dioxide suspension slurry to 50°C and adjust the pH value to 5-5.5, and add zirconium sulfate or zirconium oxychloride within this pH value range. Zirconium sulfate is preferred in this embodiment, and the weight of zirconiu...

Embodiment 2

[0034] The steps (1) to (6) of the second embodiment are basically the same as those of the first embodiment, except that in the step (1) of the second embodiment, 100 g / l sodium silicate solution is used as the dispersant for sanding and beating.

Embodiment 3

[0036] Steps (1) to (6) of Example 3 are exactly the same as those of Example 1. Finally, in the jet milling stage, 0.5% trimethylolpropane is added for organic treatment.

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Abstract

The invention discloses a preparation method of a special titanium dioxide for an oily system. The method comprises the following steps: 1, pulping to prepare a titanium dioxide suspension slurry, adding a dispersant, dispersing, and grinding; 2, diluting the ground titanium dioxide suspension slurry, and filtering; 3, adding a zirconium compound, curing, and depositing; 4, adding an aluminum compound, curing, and depositing; 5, adjusting the pH value, and curing; and 6, washing, drying, and carrying out airflow crushing. The method allows the surface of a titanium dioxide particle to be respectively coated with a zirconium oxide film and an alumina film inside out and a silane coupling agent hydrolysate to be adopted to carry out organic treatment, so the special titanium dioxide has the advantages of substantially-increased weather resistance, lipophilicity and luster, low oil absorption, good dispersity, realization of the hiding capability same to import titanium dioxide, high contrast rate, good temperature resistance, and no ink layer yellowing.

Description

technical field [0001] The invention relates to a preparation method of titanium dioxide, in particular to a preparation method of special titanium dioxide for oily systems with low oil absorption, good dispersibility and good weather resistance, and belongs to the technical field of chemical materials. Background technique [0002] Titanium dioxide is a white inorganic pigment, which is insoluble in water, weakly acidic, and has good heat resistance. Ink, chemical fiber, rubber, cosmetics and other industries. For different application industries, titanium dioxide generally needs to be treated with inorganic compounds to improve its properties such as oil absorption, weather resistance, hiding power, dispersion and gloss. At present, domestic titanium dioxide usually adopts general-purpose titanium dioxide, and the oil absorption of general-purpose titanium dioxide is often high, which brings adverse effects to users in the oil-based paint and ink industry. When ordinary t...

Claims

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Application Information

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IPC IPC(8): C09C1/36C09C3/04C09C3/06C09C3/12
Inventor 陈俊刘俊潘巧珍邱键亭
Owner 江苏镇钛化工有限公司
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