METHOD FOR POLYMERIZATION OF N-VINYLCARBAZOLE

N-vinylcarbazole is bead polymerized in a polymerization reaction mixture made by mixing (1) molten monomer of N-vinylcarbazole suspended in water with a dispersant and (2) a solution of a free radical catalyst in sufficient water insoluble organic solvent to maintain the catalyst and a substantial...

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Bibliographische Detailangaben
Hauptverfasser:	TETSUO TANAKA, AKIHIRO TOGUCHI, NARIO YAMAGUCHI, MASAO MASUMURA
Format:	Patent
Sprache:	eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	N-vinylcarbazole is bead polymerized in a polymerization reaction mixture made by mixing (1) molten monomer of N-vinylcarbazole suspended in water with a dispersant and (2) a solution of a free radical catalyst in sufficient water insoluble organic solvent to maintain the catalyst and a substantial amount of monomer in suspended droplet form, said solvent having a specific gravity of 1.0 or more; and then agitating vigorously the mixture of (1) and (2) at a temperature above the melting point of N-vinylcarbazole in an inert atmosphere.