Low oil absorption ferric oxide yellow pigment

A technology of iron oxide yellow and oil absorption, applied in the field of pigments, to achieve the effect of extensive equipment and easy operation

Inactive Publication Date: 2009-04-29
南通宝聚颜料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is not suitable for the preparation of colorants and coatings that have strict requirements on color difference

Method used

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  • Low oil absorption ferric oxide yellow pigment
  • Low oil absorption ferric oxide yellow pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Commercially available common iron oxide yellow (trade name 301) is 250 kg, which is fed between two pairs of counter-rotating rollers by the feeding device, and the pressure of 500 MPa is applied by the hydraulic device, and the passing material is circulated 30 times by the device for compaction treatment Finally, crush it with an impact mill, and the obtained product is the same as the iron oxide yellow that has not been compacted. The test results are as follows:

[0015]

Embodiment 2

[0017] 260 kilograms of commercially available common iron oxide yellow (trade name 311) are fed into the roller compactor by a feeding device, and after compaction treatment of 60 minutes of rolling under a pressure of 1000 MPa, pulverize with an impact mill, and the product obtained is the same as that without The comparison of iron oxide yellow for compaction treatment is as follows:

[0018]

[0019] The results of the above comparison show that the oil absorption of the iron oxide yellow pigment after the compaction treatment is between 20-29g / 100g, while the oil absorption of the iron oxide yellow pigment without the compaction treatment is significantly increased.

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PUM

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Abstract

The invention discloses ferric oxide yellow pigment with low oil absorption, wherein ferric oxide yellow is obtained by means of wet-method sulfate oxidation, and the dense ferric oxide yellow is crushed to obtain the ferric oxide yellow pigment, wherein the ferric oxide yellow is obtained by means of wet-method sulfate oxidation and then dried, and ferric oxide yellow powder is subjected to densification treatment. In the technology, the product is obtained by acquisition of the ferric oxide yellow by means of wet-method sulfate oxidation, drying, densification of the powder and crushing of the dense ferric oxide yellow. The technology can manufacture the ferric oxide yellow pigment with low oil absorption, and more importantly no organic chemical substance is added during the manufacturing process; and the equipment adopted by the method is wide, simple and easy to operate.

Description

technical field [0001] The invention relates to a pigment, in particular to an iron oxide yellow pigment used in color paste and paint, which is suitable for high-concentration water-based paint color paste or oily color paste. Background technique [0002] Iron oxide yellow is an important inorganic color pigment. The chemical formula is Fe2O3.H2O or FeOOH. The color is bright and pure ocher yellow, with excellent tinting strength and excellent hiding power. At the same time, it is also resistant to light, alkali and acid. These properties make it widely applicable. [0003] The industry widely adopts wet sulfate oxidation method to produce iron oxide yellow (USP1327061, USP1368748). The process usually has two steps: the first step is to use alkali (usually sodium hydroxide solution) to precipitate ferrous sulfate at a temperature of 20-50 degrees Celsius and pass it into air to oxidize to prepare crystal seeds. Then air, iron sheet and crystal seed are placed in ferr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/24C09C3/04
Inventor 谭刚屈庆文邵玉祥杨建明
Owner 南通宝聚颜料有限公司
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