MANUFACTURING METHOD FOR POLYESTER

MANUFACTURING METHOD FOR POLYESTER

PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyester having good color tone, no degradation of its melting point and little in byproduct of diethylene glycol while keeping stability of operation. SOLUTION: The method for manufacturing a polyester comprises heating in advance a low...

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Hauptverfasser: MURAI MASUO, FUJITA YUICHI
Format: Patent
Sprache:eng
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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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creator MURAI MASUO
FUJITA YUICHI
description PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyester having good color tone, no degradation of its melting point and little in byproduct of diethylene glycol while keeping stability of operation. SOLUTION: The method for manufacturing a polyester comprises heating in advance a lower alkyl ester of an aromatic dicarboxylic acid at a temperature of not less than the melting point of the ester outside of a reaction system, heating in advance a glycol at 60-160 deg.C outside of the reaction system, and after feeding the lower alkyl ester of the aromatic dicarboxylic acid into a reaction can, the glycol is supplied to the reaction can, in an ester exchange reaction and a polycondensation reaction between the lower alkyl ester of the aromatic dicarboxylic acid and the glycol.
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SOLUTION: The method for manufacturing a polyester comprises heating in advance a lower alkyl ester of an aromatic dicarboxylic acid at a temperature of not less than the melting point of the ester outside of a reaction system, heating in advance a glycol at 60-160 deg.C outside of the reaction system, and after feeding the lower alkyl ester of the aromatic dicarboxylic acid into a reaction can, the glycol is supplied to the reaction can, in an ester exchange reaction and a polycondensation reaction between the lower alkyl ester of the aromatic dicarboxylic acid and the glycol.</description><edition>7</edition><language>eng</language><subject>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</subject><creationdate>2001</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20010724&amp;DB=EPODOC&amp;CC=JP&amp;NR=2001200042A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20010724&amp;DB=EPODOC&amp;CC=JP&amp;NR=2001200042A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MURAI MASUO</creatorcontrib><creatorcontrib>FUJITA YUICHI</creatorcontrib><title>MANUFACTURING METHOD FOR POLYESTER</title><description>PROBLEM TO BE SOLVED: To provide a method for manufacturing a polyester having good color tone, no degradation of its melting point and little in byproduct of diethylene glycol while keeping stability of operation. 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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
title MANUFACTURING METHOD FOR POLYESTER
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