VINYLIDENE FLUORIDE POLYMER AND ITS PRODUCTION METHOD

PROBLEM TO BE SOLVED: To produce a vinylidene fluoride polymer which has good coloration resistance at high temperatures under industrially rational conditions. SOLUTION: The polymer is produced in which the elution amount of total organic carbon to a pure water (95 deg.C) is 1.1 μg/cm2 or less by c...

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Bibliographic Details
Main Authors NAGAI AISAKU, HORIE KATSUO, HOSOKAWA TOSHIO, TERAMOTO KAKICHI, KUZUO TAKUMI
Format Patent
LanguageEnglish
Published 09.08.2002
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:PROBLEM TO BE SOLVED: To produce a vinylidene fluoride polymer which has good coloration resistance at high temperatures under industrially rational conditions. SOLUTION: The polymer is produced in which the elution amount of total organic carbon to a pure water (95 deg.C) is 1.1 μg/cm2 or less by carrying out the suspension polymerization at a polymerization temperature of 10-100 deg.C in a medium mixture obtained by adding to an aqueous medium of 100 pts.mass a halogenated hydrocarbon solvent in 10-50 pts.mass represented by the formula CX3CX2CHX2 [X is a fluorine or chlorine; 4-6 of 7 Xs are a fluorine and 1-3 Xs are a chlorine], which has good solubility against both of a vinylidene fluoride monomer and a polymerization initiator.
Bibliography:Application Number: JP20010018137