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Production process for 18k gold titanium crystal pearlescent pigment

A pearlescent pigment and production process technology, applied in the field of pigments, can solve problems such as complex production process, high cost, and difficult process control, and achieve the effect of strong weather resistance, easy control, and good hiding power

Active Publication Date: 2011-11-23
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

[0004] Ordinary golden pearlescent pigments can be produced by many manufacturers at home and abroad, but golden pearlescent pigments with 18K gold effects are rarely found. Although there are similar products from German Merck and domestic Oak, their production process is complicated, the process is difficult to control, and the cost is relatively high. high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The particle size of natural mica is 5-30μm on a dry basis, 50g, add 500ml of soft water to a 1000ml beaker, stir evenly, adjust the pH to 1.5 with hydrochloric acid, raise the temperature to 65°C, and then carry out the following 5 layers of coating in sequence:

[0027] The first layer: 4g of crystalline tin tetrachloride and 2g of crystalline aluminum trichloride are dissolved in hydrochloric acid, diluted to 60ml with soft water, at a temperature of 65°C, added at a flow rate of 30ml / h, while maintaining PH = 1.5 to 1.6, stir for 10 minutes after adding, heat up to 75°C, add sodium hydroxide to raise the pH to 2.2;

[0028] The second layer: at a temperature of 75°C, add 2mol / L titanium tetrachloride solution at a flow rate of 25ml / h, and at the same time use a 32% sodium hydroxide solution by weight to keep the pH at 2.2-2.5 until the suspension is Pearl silver, stop adding, stir for 10 minutes, add sodium hydroxide to raise pH=8.0;

[0029] The third layer: at a ...

example 2

[0033] Synthetic mica particle size is 10-100μm dry basis 60g, add 600ml of soft water to a 1000ml beaker, stir evenly, adjust the pH to 1.5 with hydrochloric acid, heat up to 65°C, and then carry out the following 5 layers of coating in sequence:

[0034] The first layer: 4g of crystalline tin tetrachloride and 2g of crystalline aluminum trichloride are dissolved in hydrochloric acid, diluted to 60ml with soft water, at a temperature of 65°C, added at a flow rate of 30ml / h, while maintaining PH = 1.5 to 1.6, stir for 10 minutes after adding, heat up to 75°C, add sodium hydroxide to raise the pH to 2.2;

[0035] The second layer: at a temperature of 75°C, add 2mol / L titanium tetrachloride solution at a flow rate of 25ml / h, and at the same time use a 32% sodium hydroxide solution by weight to keep the pH constant at 2.2 to 2.5; until the suspension is Pearl silver, stop adding, stir for 10 minutes, add sodium hydroxide to raise pH=8.0;

[0036] The third layer: at a temperatur...

example 3

[0040] Synthetic mica particle size is 40-160μm dry basis 100g, add 700ml of soft water to a 1000ml beaker, stir evenly, adjust the pH to 1.5 with hydrochloric acid, raise the temperature to 65°C, and then carry out the following 5 layers of coating in sequence:

[0041]The first layer: 4g of crystalline tin tetrachloride and 2g of crystalline aluminum trichloride are dissolved in hydrochloric acid, diluted to 60ml with soft water, at a temperature of 65°C, added at a flow rate of 30ml / h, while maintaining PH = 1.5 to 1.6, stir for 10 minutes after adding, heat up to 75°C, add sodium hydroxide to raise the pH to 2.2;

[0042] The second layer: at a temperature of 75°C, add 2mol / L titanium tetrachloride solution at a flow rate of 25ml / h, and at the same time use a 32% sodium hydroxide solution by weight to keep the pH constant at 2.2 to 2.5; until the suspension is Pearl silver, stop adding, stir for 10 minutes, add sodium hydroxide to raise pH=8.0;

[0043] The third layer: a...

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Abstract

The invention discloses a production process for pure golden 18k gold titanium crystal pearlescent pigment which adopts mica film as a substrate and is subjected to multilayer coating. The production process is characterized by: sequentially coating the surface of the plate-like substrate of the mica film with a mixture of tin chloride pentahydrate and crystal aluminum trichloride, titanium tetrachloride, sodium metasilicate pentahydrate, a mixture of trichloride ferric and ammonium metavanadate, titanium tetrachloridethe; carrying out sucking filtration, washing, drying and annealing to formthe 18k gold titanium crystal pearlescent pigment. Compared to the prior art, the prepared 18k gold titanium crystal pearlescent pigment through the production process provided by the present invention has characteristics of high chromaticity, good covering power and strong weathering resistance. With the present invention, although the production process does not contain the gold element, the prepared 18k gold titanium crystal pearlescent pigment has the effect of the 18k gold, and has cheap price. In addition, the 18k gold titanium crystal pearlescent pigment has great economic value; the production process is simple and easy to be controlled, and is applicable for producing the 18k gold titanium crystal pearlescent pigment on a large scale.

Description

technical field [0001] The invention belongs to the technical field of pigments, and in particular relates to a production process of a pure gold 18K gold titanium crystal pearlescent pigment with mica flakes as a base material and coated with multiple layers. Background technique [0002] Pearlescent pigments are coated with one or more layers of high refractive index metal or non-metal oxides such as alumina, titanium dioxide, iron oxide, etc. on the surface of flake substrates such as mica flakes and glass flakes. After suction filtration, washing, and drying , Products formed by calcination. [0003] Pearlescent pigment is a new type of pigment product recently developed by human beings. It has the characteristics of stable physical and chemical properties, non-toxic and harmless, and rich colors. It is widely used in ink, paint, cosmetics and printing. Existing published patent documents such as: US3438796, DE4437753, DE4405494 etc. The most influential company at h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/36C09C3/06
Inventor 付中华
Owner 河南凌宝新材料科技有限公司
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