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Method for producing fluoroolefin copolymer powder for powder coating, composition for powder coating, powder coating and coated article
Method for producing fluoroolefin copolymer powder for powder coating, composition for powder coating, powder coating and coated article
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机译:粉末涂料用氟烯烃共聚物粉末的制造方法,粉末涂料用组合物,粉末涂料及被覆物品
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摘要
To provide a process for producing a fluoroolefin copolymer powder for powder coating material, which presents excellent stability of a fluoroolefin copolymer solution obtainable by polymerization in its production process, and which is capable of forming a cured film having an excellent appearance when used for a powder coating material. A monomer mixture comprising specific monomers is polymerized in an organic solvent in the presence of specific amounts of hydrotalcite and at least one compound (B) selected from a potassium salt, a sodium salt, a magnesium salt and a hindered amine-type light stabilizer, to obtain a suspension; an insoluble component is removed from the suspension to obtain a fluoroolefin copolymer solution having a pH of from 3.8 to 6.5 and an APHA value within a range of from 1 to 200; and the organic solvent is removed from the solution to obtain the fluoroolefin copolymer powder.
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