Special coating pearlescent pigment and production method thereof

A pearlescent pigment, production method technology, applied in the direction of pigment preparation, inorganic pigment processing, chemical instruments and methods, etc., to achieve the effects of convenient operation, increased stability, and improved color and luster

Inactive Publication Date: 2020-10-13
河南凌宝新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a special coated pearlescent pigment and a production method thereof, which has the advantages of effectively reducing the number of heatings in the preparation process and can obviously improve the color and stability of the pearlescent pigment, and solves the problems existing in the prior art. some of the problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, weigh 20 grams of sheet-like substrate with a thickness of 10-60mm and put it into a stirrer. The stirrer is a Sartorius 90-2A constant temperature digital display magnetic stirrer, and then use a measuring cylinder to measure the TiO2 solution with a content of 186g / L 35ml and 35ml of ferric oxide solution with a content of 160g / L for subsequent use, then utilize deionized water to make a suspension of 80ml from the flake substrate in the stirrer, utilize a constant temperature digital display magnetic stirrer to heat the suspension, and make Keep the temperature at 70-75°C. After the temperature stabilizes, add TiO2 solution dropwise at a flow rate of 10ml / h, add ferric hydroxide solution dropwise at a rate of 12ml / h, and then add sodium hydroxide solution dropwise to stabilize the pH of the suspension at 2.2 to 2.8, use a stirrer to stir the suspension for 30 minutes, then add 0.4 g of phosphorous acid to the suspension, and stir the suspension until the phosph...

Embodiment 2

[0025] First, weigh 20 grams of sheet-like substrate with a thickness of 10-60mm and put it into a stirrer. The stirrer is a Sartorius 90-2A constant temperature digital display magnetic stirrer, and then use a measuring cylinder to measure the TiO2 solution with a content of 186g / L 35ml and 35ml of ferric oxide solution with a content of 160g / L for subsequent use, then utilize deionized water to make a suspension of 80ml from the flake substrate in the stirrer, utilize a constant temperature digital display magnetic stirrer to heat the suspension, and make Keep the temperature at 75-80°C. After the temperature stabilizes, add TiO2 solution dropwise at a flow rate of 10ml / h, add ferric hydroxide solution dropwise at a rate of 12ml / h, and then add sodium hydroxide solution dropwise to stabilize the pH of the suspension at 2.2 to 2.8, use a stirrer to stir the suspension for 30 minutes, then add 0.4 g of phosphorous acid to the suspension, and stir the suspension until the phosph...

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PUM

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Abstract

The invention relates to the technical field of pearlescent pigments, and discloses a special coating pearlescent pigment and a production method thereof. According to the invention, the temperature of suspension liquid does not need to be frequently changed when the pearlescent pigment is prepared, and the suspension liquid is stirred by utilizing a constant-temperature digital display magnetic stirrer, so that hydrates of oxides such as titanium and iron can be uniformly dispersed in the suspension liquid. The suspension liquid is stirred to dissolve hydrates of oxides such as titanium and iron, so that the color degree of the pearlescent pigment is improved; water in the pearlescent pigment is fully dried by utilizing a drying box, so that the stability of the pearlescent pigment is improved; and when the pearlescent pigment is prepared, the temperature of the suspension liquid only needs to be increased once, and then the temperature of the suspension liquid can be stabilized by utilizing the constant-temperature digital display magnetic stirrer, and the temperature of the suspension liquid is kept unchanged all the time in the whole preparation step, so that the pearlescent pigment preparation failure caused by temperature misoperation in the preparation process can be effectively avoided, and the purpose of convenient operation is achieved.

Description

technical field [0001] The invention relates to the technical field of pearlescent pigments, in particular to special coated pearlescent pigments and a production method thereof. Background technique [0002] As a high-brightness material that increases the added value of products, it has a better effect in the printing industry. It can improve the brightness of the product's color and change the color rendering effect. It exhibits iridescent interference colors, reflected and refracted in the flakes. The interference color varies according to the thickness of titanium dioxide or other metal oxides, and has a profound, three-dimensional, silky feeling with excellent multicolor effects. Pearlescent pigments are composed of thin layers of several metal oxides coated with mica. Different pearlescent effects can be produced by changing the thin layer of metal oxide. Compared with other pigments, pearlescent pigments have incomparable effects for their unique soft pearl luster...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C3/04C09C3/06
CPCC09C1/0015C09C3/003C09C3/006C09C3/04C09C3/043C09C3/063C09C2220/106
Inventor 付中华
Owner 河南凌宝新材料科技有限公司
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