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Method for preparing iron oxide pigment

A technology of iron oxide pigments and pigments, which is applied in the surface treatment of iron oxide pigments and the production of iron oxide pigments. It can solve the problems of difficult source of surface treatment agents, poor dispersion and suspension, and fast sedimentation speed, so as to reduce the application cost. , the effect of slowing down the settling speed and improving the dispersion

Inactive Publication Date: 2004-04-14
SHANGHAI YIPIN PIGMENTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to disclose a preparation method of iron oxide pigments, so as to overcome the poor dispersibility and suspending property of the prior art, fast settling speed, easy agglomeration and agglomeration, and difficult sources of surface treatment agents. The higher price and the defects of the current general dry grinding machinery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Adding 0.8 kg of sodium silicate and 0.3 kg of butyl titanate to 100 kg of slurry with an iron oxide content of 60 wt%, stirred for 1 hour, dried until the water content was less than 1 wt%, and pulverized to obtain a dry material;

[0020] Add 0.4 kg of propylene glycol and 0.4 kg of butanediol into 100 kg of the above-mentioned powder, and stir evenly to obtain the iron oxide pigment of the present invention. The test results are shown in Table 1.

Embodiment 2

[0022] Add 0.5 kg of sodium silicate and 0.1 butyl titanate to 100 kg of slurry with iron oxide content of 30 wt%, stir for 1 hour, dry the water content to less than 1 wt%, and pulverize to obtain a dry material;

[0023] Add 0.3 kg of propylene glycol and 0.3 kg of butanediol into 100 kg of the above-mentioned powder, and stir evenly to obtain the iron oxide pigment of the present invention. The test results are shown in Table 1.

Embodiment 3

[0025] Adding 0.5 kg of sodium silicate and 0.5 kg of butyl titanate to 100 kg of slurry with an iron oxide content of 30 wt%, stirring for 1 hour, until the dry water content is less than 1 wt%, pulverizing to obtain a dry material;

[0026] Add 0.3 kg of propylene glycol and 0.5 kg of butanediol into 100 kg of the above-mentioned powder, and stir evenly to obtain the iron oxide pigment of the present invention. The test results are shown in Table 1.

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PUM

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Abstract

The preparation method of colcothar includes the following steps: (1) wet surface treatment; utilizing some substance which have the properties of dilatancy, dispersibility, suspendability and lubricity in the water and adding them into the undried slurry material is colcothar so as to make the percipitability and agglomeration property of the easy-precipitated colcothar after which is dried obtain improvement; and (2) dry surface treatment; adding dry surface treatment agent to the dried powder and making it uniformly cover the surface of pigment molecule, so that it not only has the moistening action, but also can produce lubricating action. Said invention can make the colcothar have good fineness value and smaller apparent density, and have better flowability and high dyeing ability.

Description

technical field [0001] The invention relates to a production method of inorganic pigments, in particular to a production method of iron oxide pigments, in particular to a surface treatment method of iron oxide pigments. Background technique [0002] Iron oxide pigments mainly refer to iron oxide red, iron yellow, iron black, iron orange, iron brown and other colored pigments whose basic substance is iron oxide. Iron oxide pigments are characterized by their many colors, wide spectrum, non-toxic and cheap Features, widely used in coatings, building materials, plastics, electronics, tobacco, abrasives, medicine, pet feed additives and other industries. Worldwide, the production and sales volume of iron oxide pigments is second only to titanium dioxide, and it is the second largest inorganic color pigment with a wide range. The world's consumption of iron oxide pigments reaches 1 million tons per year. [0003] However, the properties of currently commercially available iron o...

Claims

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Application Information

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IPC IPC(8): C09C1/24C09C3/06
Inventor 王丹英高福君徐俊
Owner SHANGHAI YIPIN PIGMENTS CO LTD
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