METHOD FOR PRODUCING WATER-DISINTEGRATABLE BLOCK COPOLYMER AND WATER-DISINTEGRATABLE BLOCK COPOLYMER OBTAINED BY THE METHOD

PROBLEM TO BE SOLVED: To provide a method for producing a block copolymer usable as a novel plastic material having a rapid decomposability in a large amount of water (water disintegratability) while maintaining a certain form in the air and absorbing a certain amount of moisture content. SOLUTION:...

Full description

Saved in:
Bibliographic Details
Main Authors OBATA ATSUO, MITSUZUKA MASAHIKO, OTANI RIEKO, WATANABE AKITO, TSURUTA MANABU, OOKUBO HIDEKAZU
Format Patent
LanguageEnglish
Published 24.04.2008
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To provide a method for producing a block copolymer usable as a novel plastic material having a rapid decomposability in a large amount of water (water disintegratability) while maintaining a certain form in the air and absorbing a certain amount of moisture content. SOLUTION: A method for producing a water-disintegratable block copolymer comprising a step of reacting (a): (a1) a polyalkylene glycol and/or (a2) an aliphatic polyester having a hydroxy group at both ends obtained by esterification of a polyalkylene glycol and an aliphatic dicarboxylic acid or its anhydride, (b) an aliphatic polyester having a hydroxy group at both ends not including a polyoxyalkylene group, and (c) a chain extending agent having a plurality of functional groups to react with a hydroxy group is provided. COPYRIGHT: (C)2008,JPO&INPIT
Bibliography:Application Number: JP20070238051