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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 o

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

Example Embodiment

[0026] Example one

[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 the titanium dioxide, and stir evenly Afterwards, adjust the slurry pH to 10 with 100 g / l sodium hydroxide solution, and pump the titanium dioxide suspension slurry into the laboratory NETZS sand mill for grinding.

[0028] (2) Use deionized water to dilute the sand-milled titanium dioxide suspension slurry to 300g / l, and pass the slurry through a 325-mesh vibrating sieve to remove the small crude titanium dioxide particles that may exist and the debris and sand grinding beads. Other impurities.

[0029] (3) Raise the temperature of the above titanium dioxide suspension slurry to 50°C and adjust the pH to 5 to 5.5. Add zirconium sulfate or zirconium oxychloride within this pH range. In this embodiment, zirconium sulfate is preferred, and the ...

Example Embodiment

[0033] Example two

[0034] Steps (1) to (6) of the second embodiment are basically the same as those of the first embodiment. The difference is that in the step (1) of the second embodiment, a 100g / l sodium silicate solution is used as the sanding slurry dispersant.

Example Embodiment

[0035] Example three

[0036] The steps (1) to (6) of the third embodiment are exactly the same as those of the first embodiment. 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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