METHOD FOR PRODUCING POLYVINYL ALCOHOL-BASED RESIN HAVING 1,2-DIOL STRUCTURE IN SIDE CHAIN

PROBLEM TO BE SOLVED: To provide a method for producing a polyvinyl alcohol resin which is small in a polymerization degree distribution and a modification degree distribution and contains a 1,2-diol structure in a side chain. SOLUTION: Vinyl ester monomers and monomers expressed by general formula...

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Hauptverfasser:	TOMITA MUNETOSHI, YAMAUCHI YOSHIHITO, KUROKI HIDEHIRO
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:	PROBLEM TO BE SOLVED: To provide a method for producing a polyvinyl alcohol resin which is small in a polymerization degree distribution and a modification degree distribution and contains a 1,2-diol structure in a side chain. SOLUTION: Vinyl ester monomers and monomers expressed by general formula (1) are copolymerized in the presence of a polymerization catalyst in a solvent, wherein the monomers are continuously or intermittently added to the polymerization system and then the obtained copolymer is saponified. COPYRIGHT: (C)2009,JPO&INPIT