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Leveling agent for powdered coating and preparation method of leveling agent

A powder coating and leveling agent technology, applied in powder coatings, anti-corrosion coatings, polyester coatings, etc., can solve the problems of thin liquid coatings, and achieve the effects of low polarizability, low surface energy, and improved thermal stability

Inactive Publication Date: 2018-03-13
SHANDONG RUIFENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, perfluorinated modified polyacrylate is mainly used in liquid coating leveling agent, the thickness of liquid coating is thin, and the requirements for leveling, paint film strength and corrosion resistance are higher, and perfluorinated modified polyacrylate has excellent leveling properties, paint film strength and corrosion resistance, there is no report on the application in powder coatings

Method used

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  • Leveling agent for powdered coating and preparation method of leveling agent
  • Leveling agent for powdered coating and preparation method of leveling agent
  • Leveling agent for powdered coating and preparation method of leveling agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The composition of raw materials is as follows:

[0023]

[0024] The preparation method is as follows:

[0025] (1) Add 500 parts of toluene and butyl acrylate into the reactor, start stirring and heating to reflux;

[0026] (2) Add the remaining toluene, methyl acrylate, hydroxyethyl acrylate, maleic anhydride, perfluorinated polyacrylate, benzoyl peroxide and mercaptan into the dropping tank and mix evenly. Add dropwise for 2 hours;

[0027] (3) Then keep the temperature at 110° C. for 6 hours, distill under reduced pressure to extract the solvent, and obtain the leveling agent 1 .

Embodiment 2

[0029] The composition of raw materials is as follows:

[0030]

[0031] The preparation method is as follows:

[0032] (1) Add 800 parts of toluene and butyl acrylate into the reactor, start stirring and heating to reflux;

[0033] (2) Add the remaining toluene, methyl acrylate, hydroxypropyl acrylate, maleic anhydride, perfluorinated polyacrylate, benzoyl peroxide and mercaptan into the dropping tank and mix evenly. Add dropwise for 2 hours;

[0034] (3) Then keep the temperature at 115° C. for 3 hours, distill under reduced pressure to extract the solvent, and obtain the leveling agent 2 .

Embodiment 3

[0036] The composition of raw materials is as follows:

[0037]

[0038] The preparation method is as follows:

[0039] (1) Add 700 parts of toluene and butyl acrylate into the reactor, start stirring and heating to reflux;

[0040] (2) Add the remaining toluene, methyl acrylate, hydroxypropyl acrylate, maleic anhydride, perfluorinated polyacrylate, benzoyl peroxide and mercaptan into the dropping tank and mix evenly. Add dropwise for 2 hours;

[0041] (3) Then keep the temperature at 112° C. for 5 hours, distill under reduced pressure to extract the solvent, and obtain the leveling agent 3 .

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Abstract

The invention belongs to the technical field of chemical synthesis, and particularly relates to a leveling agent for powdered coating and a preparation method of the leveling agent. The leveling agentfor powdered coating is prepared from the following raw materials: butyl acrylate, methyl acrylate, hydroxy acrylic resin, maleic anhydride, perfluoro modified polyacrylate, benzoyl peroxide, mercaptan and a solvent. By the adding of the perfluoro modified polyacrylate into the acrylates leveling agent, as a fluorine carbon bond is small in bond length, high in bond energy and low in fluorine atom polarizability, introduction of a fluorine-containing polymer improves the heat stability, the chemical stability, the glossiness, the low surface energy, the chemical corrosion resistance and the like of the leveling agent, which are higher than the properties of the same type of acrylate products.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a leveling agent for powder coatings and a preparation method thereof. Background technique [0002] Since the development of powder coatings in the 1960s, it has become an increasingly important component in the coatings industry because of its excellent weather resistance and corrosion resistance, and no solvent pollution. Leveling agent is an additive that plays an important role in the performance of powder coatings, providing excellent decorative and mechanical properties for powder coatings. [0003] The active ingredients of current powder coating leveling agents are mostly acrylate copolymers or homopolymers. Commonly used are polymer compounds such as polyethyl acrylate, polybutyl acrylate, poly-2-ethylhexyl acrylate, copolymers of ethyl acrylate and butyl acrylate, etc. This leveling agent can be used in all powder coatings , but sometimes it ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/47C09D5/03C09D5/08C09D163/00C09D167/00C08F265/06C08F220/18C08F220/14C08F220/20C08F222/06
CPCC08F265/06C09D5/037C09D5/08C09D163/00C09D167/00C08F220/1804
Inventor 王延刚刘春信张海瑜刘海英冯智刚张中超王厚福焦淑元
Owner SHANDONG RUIFENG CHEM
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