PRODUCTION OF MODIFIED POLYESTER

PROBLEM TO BE SOLVED: To produce a modified polyester having high uniformity and dispersedness and not undergoing long-term nonuniform dispersion to permit direct film formation, direct spinning or the like in adding a modifier-containing polyester useful for use in a fiber, films and other moldings...

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Bibliographic Details
Main Authors TAKASE TORU, NAKAO TAKUO
Format Patent
LanguageEnglish
Published 25.05.1999
Edition6
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
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Summary:PROBLEM TO BE SOLVED: To produce a modified polyester having high uniformity and dispersedness and not undergoing long-term nonuniform dispersion to permit direct film formation, direct spinning or the like in adding a modifier-containing polyester useful for use in a fiber, films and other moldings to a continuous polymerization line of a base polymer. SOLUTION: In adding a modifier-containing polyester to a base polymer line 3 of a base polyester obtained by continuous polymerization, part of the polymer is withdrawn from the discharge side of a static mixing line 5 inserted in the line 3 and recirculated into the polymer feed side of the line 15.
Bibliography:Application Number: JP19970304297