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Production Process of Titanium Dioxide Special Color Masterbatch for Automotive Plastics

A production process and color masterbatch technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., to achieve the effects of low processing torque, excellent anti-yellowing ability, and high whiteness

Active Publication Date: 2016-01-27
CHONGQING MINFENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Titanium dioxide, a special color masterbatch for automotive plastics, has high requirements on whiteness, dispersibility, hiding power, processing torque performance, etc., but ordinary titanium dioxide is difficult to meet the above requirements, so it is necessary to improve the existing titanium dioxide production process

Method used

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  • Production Process of Titanium Dioxide Special Color Masterbatch for Automotive Plastics
  • Production Process of Titanium Dioxide Special Color Masterbatch for Automotive Plastics
  • Production Process of Titanium Dioxide Special Color Masterbatch for Automotive Plastics

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Embodiment 1

[0010] The invention provides a production process of titanium dioxide special-purpose color masterbatch for automobile plastics, which includes the following steps: ore dressing, crushing, acid hydrolysis, sedimentation, pressure filtration, concentration of titanium liquid, hydrolysis, water washing, bleaching, rinsing, salt treatment, diaphragm pressing Filtration, calcination, crushing, control the content of arsenic in the beneficiation step to less than 5ppm, and add 0.5% K in the salt treatment step 2 CO 3 , 0.15% H 3 PO 4 , all with TiO 2 To ensure that the specific surface area of ​​the obtained titanium dioxide is 8-15m 2 / g. In the beneficiation step, the heavy metal content is lower than 1000ppm, in the washing step, the iron content is controlled to be lower than 50ppm, and the temperature control range in the calcination process is 10°C.

[0011] The main parameters of the special color masterbatch titanium dioxide for automotive plastics obtained by the abo...

Embodiment 2

[0014] The invention provides a production process of titanium dioxide special-purpose color masterbatch for automobile plastics, which includes the following steps: ore dressing, crushing, acid hydrolysis, sedimentation, pressure filtration, concentration of titanium liquid, hydrolysis, water washing, bleaching, rinsing, salt treatment, diaphragm pressing Filtration, calcination, crushing, control the content of arsenic in the beneficiation step to less than 5ppm, and add 0.5% K in the salt treatment step 2 CO 3 , 0.15% H 3 PO 4 , all with TiO 2 To ensure that the specific surface area of ​​the obtained titanium dioxide is 8m 2 / g. In the beneficiation step, the heavy metal content is lower than 1000ppm, in the washing step, the iron content is controlled to be lower than 50ppm, and the temperature control range in the calcination process is 10°C.

[0015] The main parameters of the special color masterbatch titanium dioxide for automotive plastics obtained by the above ...

Embodiment 3

[0018] The invention provides a production process of titanium dioxide special-purpose color masterbatch for automobile plastics, which includes the following steps: ore dressing, crushing, acid hydrolysis, sedimentation, pressure filtration, concentration of titanium liquid, hydrolysis, water washing, bleaching, rinsing, salt treatment, diaphragm pressing Filtration, calcination, crushing, control the content of arsenic in the beneficiation step to less than 5ppm, and add 0.5% K in the salt treatment step 2 CO 3 , 0.15% H 3 PO 4 , all with TiO 2 To ensure that the specific surface area of ​​the obtained titanium dioxide is 15m 2 / g. The heavy metal content in the beneficiation step is lower than 1000ppm, the iron content in the washing step is controlled to be lower than 40ppm, and the temperature control range in the calcination process is 10°C.

[0019] The main parameters of the special color masterbatch titanium dioxide for automotive plastics obtained by the above p...

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Abstract

The invention relates to a production technology of special color master batch titanium dioxide for automobile plastics. The technology comprises the steps of mineral separation, crushing, acidolysis, settlement, press filtration, titanium solution concentration, hydrolysis, water washing, bleaching, rinsing, salt treatment, diaphragm press filtration, calcining and crushing, wherein the As content is controlled below 5ppm in the mineral separation step; and in the salt treatment step, 0.5% of K2CO3 and 0.15% of H3PO4 are added to guarantee the specific surface area of the obtained titanium dioxide (by TiO2) being 8-15m<2> / g. The special color master batch titanium dioxide for automobile plastics, produced through adopting the above technical scheme, has the advantages of high whiteness, good dispersibility, strong hiding power, low processing torque and excellent anti-yellowing capability.

Description

technical field [0001] The invention relates to a production process of titanium dioxide special-purpose color masterbatch for automobile plastics. Background technique [0002] With the rapid development of my country's plastics industry, especially the development of the automobile industry, people's requirements for automobile coloring products have been further improved. Masterbatch coloring has become the main coloring method of plastics and is widely used. Plastic masterbatch is a highly concentrated, high-performance pigment preparation with a wide range of applications. Color masterbatch titanium dioxide is located in the core layer of the color masterbatch, because titanium dioxide has high refractive index, strong tinting strength, good gloss, high whiteness, strong dispersibility, strong weather resistance, etc., it is transcribed as "one of the white pigments". king". [0003] Titanium dioxide, a special color masterbatch for automotive plastics, has high requi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053
Inventor 范林熊勇沈怀远邵培丽李兵程锡钱
Owner CHONGQING MINFENG CHEM
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