Metal sliver-coated glass-based effect pigment and preparation method thereof

An effect pigment and glass-based technology, which is applied in the direction of inorganic pigment treatment, chemical instruments and methods, fibrous fillers, etc., can solve the problems of large differences in structure, large differences in color effects, and high cost

Active Publication Date: 2012-03-28
FUJIAN KUNCAI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation of the product of this patent is very complicated, the cost is high, and the product is quite different from the product of the present invention in structure, and the difference in color effect is large

Method used

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  • Metal sliver-coated glass-based effect pigment and preparation method thereof

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preparation example Construction

[0033] The preparation method of effect pigment of the present invention comprises the following steps:

[0034] (A) A certain amount of glass flakes with an average thickness in the range of 0.1 micron to 5 microns and an average particle size in the range of 1-1000 microns as the substrate are added to deionized water, stirred to form a suspension, and heated to 70-80 After ℃, add dropwise SnCl 4 aqueous solution. A certain amount of SnCl 4The solution is added within ten minutes, which is beneficial to the coating of metallic silver, and at the same time improves the compactness and strength of the coated film.

[0035] (B) Put the glass sheet through the above-mentioned treatment into aqueous glucose solution (general concentration is 1g / L-30g / L, preferably 3g / L-25g / L, more preferably 5g / L-20g / L, more preferably 6g / L -15g / L; for example, 20g / L corresponds to 2% concentration) and keep the temperature at 70-80°C.

[0036] (C) Add Tollens' reagent solution prepared from ...

Embodiment 1

[0050] Put 832 grams of glass flakes with an average particle size of 40 microns and an average thickness of 5 microns into a 5-liter vessel with stirring, add 2.07 liters of deionized water and stir at a high speed at 75°C. Formulated to contain 4.16 g of SnCl 4 , a solution of 3.5 ml of 1:1 HCl and 20 g of deionized water. The prepared solution was added to the above liquid with the glass flakes and kept stirring for 1 hour.

[0051] The above liquid was filtered and washed with 2 L of deionized water. The filtered glass flakes were transferred to a 12 liter container with stirring, followed by adding an aqueous solution formed by 186.8 grams of glucose in 6.5 liters of water, keeping the temperature of the system at 75° C. and the stirring speed at 250 rpm.

[0052] With 166.5 g of AgNO 3 , 540 grams of deionized water and 270 grams of commercially available AMP of 95% purity (containing about 5% water) prepared a solution. Add the prepared solution to the above-mention...

Embodiment 2

[0057] Repeat embodiment 1, just be 40 microns with the mean particle diameter of 516 grams, the glass flake of 1 micron average thickness replaces the glass flake in embodiment 1, other reaction conditions are constant, finally obtain the finished product pigment of 576 grams.

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Abstract

The invention relates to a glass sheet-based metal sliver-coated effect pigment and a preparation method of the pigment. The pigment is obvious in silvery white reflected light brightness and blinking effect, can be taken as an effect pigment to be used in any pigment fields, and is widely used for cosmetics, decorative materials, printing ink, coating and the like.

Description

technical field [0001] The invention relates to effect pigments based on glass flakes coated with metallic silver and to a process for producing the pigments. The pigment has strong silvery-white reflective brightness and shimmering effect, and can be used as an effect pigment in any pigment field, and is widely used in cosmetics, decorative materials, inks, paints, etc. Background technique [0002] As a typical representative of effect pigments, pearlescent pigments are formed by coating metal oxides on flake substrates. At present, the most widely used metal oxides are titanium dioxide and iron oxide. Due to the refraction and reflection of light, the absorption of light and the interference of light, pearlescent pigments can exhibit pearlescent luster ranging from silvery white to various colors. Due to the unsatisfactory transparency of mica itself, the brightness and flash effect of this kind of pigments are poor. For many years, researchers have been trying to find ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/00C09C3/06C03C17/06C03C17/36
Inventor 袁占辉谢秉坤王莉玮
Owner FUJIAN KUNCAI MATERIAL TECH
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