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Composition, preparation method and application for improving pearlescent effect of pearlescent pigment

A pearlescent pigment and composition technology, which is applied to the wet preparation of dyed pigments, inorganic pigment processing, chemical instruments and methods, etc. Low equipment requirements, simple preparation method, and improved effect of pearlescent effect

Active Publication Date: 2018-07-27
广州轩烺精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pearlescent powder coatings formulated by traditional methods have a low powder coating rate when sprayed with low voltage, and the coating separation is serious when sprayed with different voltages, and the overall powder coating rate is low
In the prior art, pearlescent pigments have the disadvantages of low powder coating rate and serious coating separation, which affect the pearlescent effect of the coating
[0004] Therefore, a new type of modified pearlescent pigment has been developed to solve the technical defects of low powder coating rate and serious coating separation in the prior art, which has become an urgent problem to be solved by those skilled in the art.

Method used

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  • Composition, preparation method and application for improving pearlescent effect of pearlescent pigment
  • Composition, preparation method and application for improving pearlescent effect of pearlescent pigment
  • Composition, preparation method and application for improving pearlescent effect of pearlescent pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 60g of golden yellow mica titanium pearlescent pigment, put it in a 500ml three-neck flask, add 180ml of absolute ethanol, stir and disperse in a water bath and heat up to 70°C, wherein the stirring speed is 800r / min, to obtain the first product 1; add 7.5g aqueous solution of silica clay additive (add 2.4g additive to 60ml deionized water, heat and stir to dissolve evenly, adjust pH=4 with glacial acetic acid), stir in water bath at 70°C for 0.5h to obtain the second product 1; slowly drop Add 0.5g of polydimethylsiloxane and 1.2g of stearic acid ethanol solution (1.2g of stearic acid is added to 60ml of absolute ethanol and heated to make it fully dissolved), and continue to stir at a constant temperature for 2h to obtain the third product 1; Product 1 was filtered under reduced pressure, the filter cake was dried at 60°C under normal pressure for 38 hours, and sieved with a 100-mesh sieve to obtain Product 1.

Embodiment 2

[0029] Weigh 55g of golden yellow mica titanium pearlescent pigment, place in a 500ml three-necked flask, stir to obtain the first product 2; add 4.0g of an aqueous solution of silica clay additive (2.2g of additive is added to 185ml of deionized water, heat and stir evenly and use Hydrochloric acid to adjust pH=3), stirring in a constant temperature water bath at 80°C for 0.5h to obtain the second product 2; add 2.0g titanate ethanol solution and 1.8g stearic acid ethanol solution, continue stirring for 1.5h, and stir under cooling for 20min to obtain the third product 2. The third product 2 was filtered under reduced pressure, and the filter cake was vacuum-dried at 120° C. for 1 hour, and sieved with a 150-mesh sieve to obtain product 2.

Embodiment 3

[0031] Weigh 15g of golden yellow mica titanium pearlescent pigment, place it in a 250ml three-necked flask, and stir to obtain the first product 3; add 1.0g of silica clay additive aqueous solution (1.0g of additive is added to 50ml of deionized water, and the pH is adjusted with glacial acetic acid =4 heated and stirred evenly), the feed liquid was placed in a water bath at a constant temperature of 90° C. and stirred for 1.5 h to obtain the second product 3; then 0.5 g of cetyltrimethylammonium bromide and 0.5 g of stearic acid ethanol solution (0.5 Add 20 ml of absolute ethanol to 1 g of stearic acid), continue to stir for 1 h to obtain the third product 3; filter the third product 3 under reduced pressure, dry the filter cake at 70°C under normal pressure for 30 h, and sieve with a 150-mesh sieve to obtain Product 3.

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Abstract

The invention discloses a composition capable of enhancing pearlescent effect of a pearlescent pigment, and a preparation method and application thereof, and aims to overcome the technical defects of low powdering rate and severe coating separation in the pearlescent pigment in the prior art. The invention discloses a composition which is prepared from a pearlescent pigment, a surface modifier and a nano aid. The nano aid is selected from one or more of silicon dioxide clay, vapor-phase aluminum oxide and vapor-phase silicon dioxide. The invention discloses a preparation method of the composition. The invention also provides application of the composition or the product obtained by the preparation method in enhancing the pearlescent effect of the mica titanium pearlescent pigment in the powder paint. The test result proves that compared with the pearlescent pigment which is not subjected to surface treatment, the product obtained by the preparation method disclosed by the invention has higher powdering rate and obvious pearlescent effect after being mixed with the powder paint and subjected to electrostatic spraying.

Description

technical field [0001] The invention relates to the field of coatings, in particular to a composition for improving the pearlescent effect of pearlescent pigments, a preparation method and application thereof. Background technique [0002] Pearlescent pigment is a new type of shiny inorganic pigment, which is composed of several metal oxides coated with mica. Mica titanium pearlescent pigment is based on natural mica flakes, and is continuously coated with one layer or alternately coated with multiple layers of TiO by a special production process (gas layering method or liquid layering method). 2 , Fe 2 o 3 The micropowder formed by such metal oxides, the coated oxide film layer has a higher optical refractive index than the substrate, and has a certain degree of transparency. It produces multiple reflections and transmissions, that is, interference phenomena, for incident light, so it has a pearl-like appearance. Pastel colors. Because the mica titanium pearlescent pigm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C1/40C09C3/04C09C3/06C09C3/08C09C3/12C09D5/03
CPCC01P2002/82C09C1/0015C09C3/006C09C3/043C09C3/06C09C3/08C09C3/12C09C2200/102C09C2220/10C09D5/032
Inventor 柯永乐余倩
Owner 广州轩烺精细化工有限公司
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