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Leveling agent for powdered coating and preparation method of leveling agent
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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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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
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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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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 solventpollution. 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...
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