POLYMERIZATION VESSEL FOR PRODUCING N-VINYLCARBOXYLIC ACID AMIDE COPOLYMER

PURPOSE:To provide the title polymerization vessel capable of easily recovering polymers without their sticking to the inner wall, with the inner wall surface to come into contact with a polymerization liquid phase coated with a tetrafluoroethylene-hexafluoropropylene copolymer. CONSTITUTION:The obj...

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Hauptverfasser:	HISAMA SEIJI, SATO SHINICHI
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:	PURPOSE:To provide the title polymerization vessel capable of easily recovering polymers without their sticking to the inner wall, with the inner wall surface to come into contact with a polymerization liquid phase coated with a tetrafluoroethylene-hexafluoropropylene copolymer. CONSTITUTION:The objective polymerization vessel for producing an N- vinylcarboxylic acid amide copolymer by copolymerization between a compound of formula I and another compound of formula II (R and R are each H or methyl). In this vessel, its inner wall surface to come into contact with at least polymerization liquid phase is coated with a tetrafluoroethylene- hexafluoropropylene copolymer at a thickness of e.g. 200-1000mum.