METHOD FOR PRODUCING FLUORINE-CONTAINING COPOLYMER, METHOD FOR PRODUCING POWDER COATING MATERIAL, METHOD FOR PRODUCING COATED ARTICLE

WIPO Patent Application WO/2024/009697

A1

Provided are: a method for producing a fluorine-containing copolymer having excellent heat stability, imparting excellent glossiness to a coating film when used to form the coating film, and further suppressing the coloring of the coating film; a method for producing a powder coating material; and a method for producing a coated article.　This method for producing a fluorine-containing copolymer containing a unit based on chlorotrifluoroethylene and a unit based on vinyl ether involves using a radical polymerization initiator, a piperidyl group-containing compound, and a hydrotalcite to polymerize a monomer that includes chlorotrifluoroethylene and vinyl ether, wherein: the ratio of the molar amount of the piperidyl group in the piperidyl group-containing compound to the molar amount of the total amount of monomers used is 0.0032-0.010; the mass ratio of the amount of the hydrotalcite used to the amount of the piperidyl group-containing compound used is 0.3 to 4.6 (exclusive of 4.6); and the chlorotrifluoroethylene and the vinyl ether are continuously or intermittently supplied to a reaction system, after the polymerization initiation.

HARA YUJI (JP)
OTSUGU SATOSHI (JP)
MATSUMOTO MITSUHISA (JP)
SAHASHI YUSUKE (JP)
OCHI SHUHEI (JP)

PCT/JP2023/021769

January 11, 2024

June 12, 2023

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AGC INC (JP)

C08F2/38; C08F2/44; C08F214/24; C08F216/14; C09D5/03; C09D127/12

WO2015056751A1	2015-04-23
WO2016080220A1	2016-05-26
WO2017122701A1	2017-07-20

JPH05163457A

1993-06-29

T.S. PARTNERS et al. (JP)

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