Hydrophobic easy-to-clean powder coating

A powder coating, easy-to-clean technology, applied in the field of coatings, can solve the problems of high raw material cost, unfavorable industrial application, and decreased product surface cleanliness

Inactive Publication Date: 2019-04-26
六安科瑞达新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the powder coating in the prior art is used, it generally needs to invest a lot of manpower for maintenance and cleaning, the maintenance cost is high, the social benefit is low, and the cleanliness of the product surface will also decline, causing damage to the appearance as time goes by , or the raw material cost of some self-cleaning powder coating products is too high, which is not conducive to the realization of industrial application
For example, the current commercialized e

Method used

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  • Hydrophobic easy-to-clean powder coating

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example 1:

[0028] (1) The preparation process of organosilane modified saturated hydroxyl terminated polyester resin is as follows:

[0029] ① Mixing of raw materials: add 353g isophthalic acid, 147g ethylene glycol, 100g hydroxy silicone oil and 400g xylene into the reaction vessel, raise the temperature to 100°C, and wait for the materials to dissolve;

[0030] ②Polymerization reaction: After stirring the reaction system to 180°C, add 0.5g of tetrabutyl titanate dropwise to the reaction vessel under the protection of nitrogen, and carry out the polymerization reaction for 2h while keeping warm;

[0031] ③Post-treatment: use normal pressure and reduced pressure distillation to remove the solvent, pour the material into an aluminum pan while it is hot, cool and pulverize to obtain the organic silicon modified saturated hydroxyl-terminated polyester resin of the present invention. The hydroxyl value is measured It is 37mgKOH / g.

[0032] (2) A high-toughness super weather-resist...

Example Embodiment

[0045] Example 2:

[0046] (1) The preparation process of organosilane modified saturated hydroxyl terminated polyester resin is as follows:

[0047] ① Mixing of raw materials: add 347g of succinic acid, 243g of 1,2-propanediol, 150g of hydroxysilicone oil and 250g of xylene into the reaction vessel, raise the temperature to 110°C, and wait until all the materials are dissolved;

[0048] ②Polymerization reaction: After stirring the reaction system to 190°C, add the catalyst dropwise to the reaction vessel under the protection of nitrogen, and keep it warm for 2.5h;

[0049] ③Post-treatment: use normal pressure and reduced pressure distillation to remove the solvent, pour the material into an aluminum pan while it is hot, cool and pulverize, to obtain the organic silicon modified saturated hydroxyl-terminated polyester resin of the present invention, and the hydroxyl value is measured It is 52mgKOH / g.

[0050] (2) A self-cleaning powder coating, including the following components by wei...

Example Embodiment

[0063] Example 3:

[0064] (1) The preparation process of organosilane modified saturated hydroxyl terminated polyester resin is as follows:

[0065] ① Mixing of raw materials: add 372g of glutaric acid, 328g of neopentyl glycol, 200g of hydroxy silicone oil and 100g of xylene into the reaction vessel, raise the temperature to 120°C, and wait until all the materials are dissolved;

[0066] ②Polymerization reaction: After stirring the reaction system to 210°C, add the catalyst dropwise to the reaction vessel under the protection of nitrogen, and keep it warm for 3h;

[0067] ③Post-treatment: use normal pressure and reduced pressure distillation to remove the solvent, pour the material into an aluminum pan while it is hot, cool and pulverize, to obtain the organic silicon modified saturated hydroxyl-terminated polyester resin of the present invention, and the hydroxyl value is measured It is 42mgKOH / g.

[0068] (2) A self-cleaning powder coating, including the following components by wei...

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Abstract

The invention discloses a hydrophobic easy-to-clean powder coating which is prepared from the following components in percentage by mass: 48-58% of organic silicon modified saturated end hydroxyl polyester resin, 14-17% of an isocyanate curing agent, 1-1.5% of a smooth degasifier, 1-1.5% of a leveling agent and 22-36% of a pigment filler. The organic silicon modified saturated end hydroxyl polyester resin is adopted as basic resin of the self-cleaned powder coating, and meanwhile a coating formula is optimized, so that the powder coating disclosed by the invention has properties of hydrophobicity, easy cleaning, scrubbing resistance, detergent resistance and the like after being sprayed and cured, and can be widely applied to coating of fields such as outdoor furniture, building materialsand the like.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a hydrophobic and easy-to-clean powder coating. Background technique [0002] With the increasing variety of coating products and the continuous expansion of the application range, the coating industry has become an important independent industrial production part of the chemical industry. And in the coatings industry, powder coatings belong to the fastest growing category. However, along with the increasingly serious air pollution in the world, environmental protection regulations are increasingly strict to pollution control, requiring the development of pollution-free and resource-saving coating varieties. Therefore, solvent-free, protective and decorative powder coatings have developed rapidly because of their economic and social benefits. However, after the powder coating in the prior art is used, it generally needs to invest a lot of manpower for maintenance and cleaning,...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D5/03
CPCC09D5/03C09D175/06
Inventor 鲍远志翁世兵
Owner 六安科瑞达新型材料有限公司
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