OXYALKYLENE-GROUP-CONTAINING VINYL ESTER POLYMER AND METHOD FOR PRODUCING SAPONIFICATION PRODUCT THEREOF

PROBLEM TO BE SOLVED: To provide an oxyalkylene-group-containing vinyl ester polymer useful, e.g. as a dispersion assistant in the suspension polymerization of vinyl chloride etc., or useful in forming a film etc.; and a saponification product thereof. SOLUTION: In copolymerizing an oxyalkylene-grou...

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1. Verfasser:	TOMITA MUNETOSHI
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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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an oxyalkylene-group-containing vinyl ester polymer useful, e.g. as a dispersion assistant in the suspension polymerization of vinyl chloride etc., or useful in forming a film etc.; and a saponification product thereof. SOLUTION: In copolymerizing an oxyalkylene-group-containing monomer and a vinyl ester monomer with a reactor equipped with a jacket, the jacket temperature is raised so that the difference between the jacket temperature (Ts°C) at the start of the copolymerization and the jacket temperature (Te°C) just before stopping the copolymerization is 5-50°C. COPYRIGHT: (C)2004,JPO