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Defoaming method of unsaturated polyester transparent undercoat

A transparent primer, unsaturated technology, used in polyester coatings, foam dispersion/prevention, coatings, etc., can solve the problems of not completely eliminating bubbles, affecting product quality, increasing product costs, etc., to eliminate small bubbles, eliminate Air bubbles, the effect of eliminating foaming speed

Inactive Publication Date: 2013-05-08
上海展辰涂料有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Its defect is: due to system reasons, the bubbles cannot be completely eliminated during the production process, and it takes more than 24 hours after production to completely eliminate the bubbles
[0012] Chinese Patent Publication No. CN101696336 A uses vacuum suction filtration. In order to achieve vacuum, there are higher requirements for equipment and increased energy consumption, resulting in increased product costs.
However, the temperature of the unsaturated polyester primer should not exceed 50°C, otherwise the unsaturated polyester primer will self-polymerize and affect the product quality

Method used

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  • Defoaming method of unsaturated polyester transparent undercoat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of defoaming method of unsaturated polyester transparent primer, comprises the steps:

[0034] (1) Manufacture of unsaturated polyester transparent primer: produce transparent primer of unsaturated polyester; put quantitative unsaturated polyester resin in dispersion tank according to formula, then add quantitative styrene, speed of 500 rpm Stir, slowly add dispersant and defoamer under stirring, disperse at a high speed of 1200-1500 rpm for 5 minutes, reduce the speed to 500 rpm, slowly add zinc stearate and filler according to the formula amount, 1000- Disperse at a high speed of 1500 rpm for 15 minutes until the fineness is acceptable, then add color paste, anti-sedimentation agent and styrene, and stir at a speed of 800 rpm for 10 minutes.

[0035] (2) Suction filtration by suction filter: The unsaturated polyester transparent primer that has been produced is suction filtered by a suction filter; the KL series of Jiangsu Hongliu Chemical Machinery Co., Ltd. (...

Embodiment 2

[0039] A kind of defoaming method of unsaturated polyester transparent primer, comprises the steps:

[0040] (1) Manufacture of unsaturated polyester transparent primer: produce transparent primer of unsaturated polyester; put quantitative unsaturated polyester resin in dispersion tank according to formula, then add quantitative styrene, speed of 500 rpm Stir, slowly add dispersant and defoamer under stirring, disperse at a high speed of 1200-1500 rpm for 5 minutes, reduce the speed to 500 rpm, slowly add zinc stearate and filler according to the formula amount, 1000- Disperse at a high speed of 1500 rpm for 15 minutes until the fineness is acceptable, then add color paste, anti-sedimentation agent and styrene, and stir at a speed of 800 rpm for 10 minutes.

[0041] (2) suction filter suction filtration: the produced unsaturated polyester transparent primer adopts suction filter suction filtration; adopts KL series suction filter suction filtration of Jiangsu Hongliu Chemical ...

Embodiment 3

[0044] A kind of defoaming method of unsaturated polyester transparent primer, comprises the steps:

[0045] (1) Manufacture of unsaturated polyester transparent primer: produce transparent primer of unsaturated polyester; put quantitative unsaturated polyester resin in dispersion tank according to formula, then add quantitative styrene, speed of 500 rpm Stir, slowly add dispersant and defoamer under stirring, disperse at a high speed of 1200-1500 rpm for 5 minutes, reduce the speed to 500 rpm, slowly add zinc stearate and filler according to the formula amount, 1000- Disperse at a high speed of 1500 rpm for 15 minutes until the fineness is acceptable, then add color paste, anti-sedimentation agent and styrene, and stir at a speed of 800 rpm for 10 minutes.

[0046] (2) suction filter suction filtration: the produced unsaturated polyester transparent primer adopts suction filter suction filtration; adopts KL series suction filter suction filtration of Jiangsu Hongliu Chemical ...

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Abstract

The present invention provides a defoaming method of unsaturated polyester transparent undercoat, which is characterized by comprising the steps of: (1) preparing the unsaturated polyester transparent undercoat including: producing unsaturated polyester transparent undercoat; (2 ) leaching by a suction filtration machine including: leaching the unsaturated polyester transparent undercoat by using a suction filtration machine; wherein the leaching temperature is 0-50 DEG C, the leaching pressure is 0.1-0.25 Mpa, and the leaching speed is 1.2-1.8 t / h; and (3) packaging including: directly packaging the unsaturated polyester transparent undercoat after leaching. The defoaming time of the present invention is shortened from the original 48 hours to 1-4 hours. All air bubbles and small bubbles are removed. The product prepared by the present invention has no pinholes in the coating process.

Description

technical field [0001] The invention relates to a production process for paint defoaming, in particular to a defoaming method for unsaturated polyester transparent primer. The invention belongs to the field of chemical technology. Background technique [0002] At present, the application of unsaturated polyester transparent primer mainly has two aspects: [0003] 1. The coating of musical instruments is all made of unsaturated polyester paint, which has good fullness, high gloss and high hardness, such as: piano, guitar, violin, etc.; [0004] 2. The coating of civil furniture is mainly used in conjunction with polyurethane paint. Unsaturated polyester paint is used as a primer and polyurethane paint is used as a top coat. The unsaturated polyester paint has high solid content, good filling, thick coating without foaming, and at the same time It can improve the hardness of the topcoat and cover polyurethane topcoat, such as office furniture. [0005] Due to the low surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/06B01D19/04B01D19/02
Inventor 刘锋周琼辉
Owner 上海展辰涂料有限公司
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