| abstract |
(57) [Summary]n[Purpose] Using a solvent other than CFC whose use is regulated Provided is a method for producing a vinylidene fluoride polymer.n[Structure] A vinylidene fluoride-based monomer is used in an amount of 20 to 80 ° C, 10 kg / cm 2 Polymerize at less than gauge pressure Manufactured a polymer with an average molecular weight (polystyrene equivalent) of 100,000 or less A method of producing 1,1-dichloro-1 as a solvent Fluoroethane or 1-chloro-1,1-difluoro Using ethane, and using peroxydica as a polymerization initiator Use bonbonate. |