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Modified pearlescent pigment, preparation method and application thereof, plastic and coating

A pearlescent pigment and modification technology, applied in the field of pigments, can solve problems such as poor pearlescent effect, achieve good pearlescent effect, simple and easy-to-operate preparation method, and easy to control

Inactive Publication Date: 2020-08-11
FUJIAN KUNCAI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the pearlescent effect of pearlescent pigments in the resin system is not good

Method used

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  • Modified pearlescent pigment, preparation method and application thereof, plastic and coating
  • Modified pearlescent pigment, preparation method and application thereof, plastic and coating
  • Modified pearlescent pigment, preparation method and application thereof, plastic and coating

Examples

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preparation example Construction

[0055] In addition, the present application also provides a method for preparing the aforementioned modified pearlescent pigment, which may include, for example, the following steps: coating the surface of the pearlescent pigment with a resin matrix to modify the pearlescent pigment.

[0056] In an optional embodiment, coating can be performed by liquid phase deposition.

[0057] In an optional embodiment, liquid phase deposition may include, for example: mixing an alkaline solution containing a resin matrix with a slurry of pearlescent pigments, followed by neutralization with an acidic solution.

[0058]In an optional embodiment, 40-80g (such as 40g, 45g, 50g, 55g, 60g, 65g, 70g, 75g or 80g) of pearlescent pigment is dissolved in the solvent in 1000mL of slurry; preferably, 2000mL of The pearlescent pigment of 100g is dissolved in the solvent.

[0059] For reference, the liquid phase deposition can be carried out in the following order: add an alkaline solution containing a...

Embodiment 1

[0081] Weigh 100g of a synthetic mica-based pearlescent pigment with a particle size of 5-45μm and a diameter-to-thickness ratio of ≥60, place it in a 5L round-bottomed flask, add 2000mL of deionized water, put it in a water bath, and stir at a rate of 300rps. Heat up to 30°C, adjust the pH to 6 with 10% hydrochloric acid solution, add 100mL of sodium hydroxide solution (5g of acrylic resin and 10g of sodium hydroxide) containing water-based acrylic resin (molecular weight: 8000) at a rate of 1mL / min, Neutralize with 10% hydrochloric acid solution, keep the pH value at 6 until the reaction is completed, filter, wash, and dry to obtain the modified pearlescent pigment.

Embodiment 2

[0083] Weigh 100g of a synthetic mica-based pearlescent pigment with a particle size of 5-45μm and a diameter-to-thickness ratio of ≥60, place it in a 5L round-bottomed flask, add 2000mL of deionized water, put it in a water bath, and stir at a rate of 300rps. Heat up to 80°C, adjust the pH to 5 with 10% hydrochloric acid solution, add 100mL of sodium hydroxide solution (wherein 5g of acrylic resin and 10g of sodium hydroxide) containing water-based acrylic resin (molecular weight is 8000) at a speed of 1mL / min, Neutralize with a hydrochloric acid solution with a mass concentration of 10%, keep the pH value at 5 until the reaction is completed, filter, wash, and dry to obtain the modified pearlescent pigment.

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Abstract

The invention discloses a modified pearlescent pigment, a preparation method and application thereof, a plastic and a paint, and belongs to the technical field of pigments. The modified pearlescent pigment comprises a pearlescent pigment body and a resin matrix layer coating the surface of the pearlescent pigment body, and the resin matrix comprises a water-based high-molecular polymer. The modified pearlescent pigment has good compatibility and dispersibility in a water-based polymer material system, and shows a good pearlescent effect. The preparation method comprises the step of coating thesurface of the pearlescent pigment with the resin matrix to modify the pearlescent pigment. The method is simple, easy to operate, safe, environmentally friendly and convenient to control, and the prepared product is stable and reliable in quality. The pearlescent pigment is used for preparing plastic or paint, the plastic or paint with a good pearlescent effect can be obtained, and the pigment has a high powdering rate in the paint spraying process.

Description

technical field [0001] The invention relates to the technical field of pigments, in particular to a modified pearlescent pigment, a preparation method and application thereof, a plastic and a paint. Background technique [0002] As a new type of pigment, pearlescent pigments are widely used in traditional organic pigments, inorganic pigments, metal pigments (aluminum silver paste, copper gold powder, etc.) and other application fields. Because of their environmental protection and safety, the development trend to replace traditional pigments is increasingly strengthened. With the adjustment of product application fields and application process conditions, higher requirements are put forward for the performance of pearlescent pigments. [0003] At present, the pearlescent effect of pearlescent pigments in resin systems is not good. [0004] In view of this, the present invention is proposed. Contents of the invention [0005] One of the objectives of the present invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/40C09C1/28C09C3/10C08K9/10C08K3/34C08K3/40C08K3/22C08K3/36C09D5/03C09D5/36
CPCC08K3/22C08K3/34C08K3/36C08K3/40C08K9/10C08K2003/2227C09C1/0015C09C1/28C09C1/40C09C1/405C09C1/407C09C3/10C09D5/032C09D5/035C09D5/36C08L23/12
Inventor 费明林学周丁家国谢秉昆
Owner FUJIAN KUNCAI MATERIAL TECH
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