JPS5515422A - Continuous esterification of terephthalic acid - Google Patents

Continuous esterification of terephthalic acid

Info

Publication number
JPS5515422A
JPS5515422A JP8724078A JP8724078A JPS5515422A JP S5515422 A JPS5515422 A JP S5515422A JP 8724078 A JP8724078 A JP 8724078A JP 8724078 A JP8724078 A JP 8724078A JP S5515422 A JPS5515422 A JP S5515422A
Authority
JP
Japan
Prior art keywords
terephthalic acid
reactors
reactor
esterification
fine particles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8724078A
Other languages
Japanese (ja)
Inventor
Yasuhiro Tokiyama
Minoru Nishinohara
Nobuhiro Matsunaga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Ester Co Ltd
Original Assignee
Nippon Ester Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Ester Co Ltd filed Critical Nippon Ester Co Ltd
Priority to JP8724078A priority Critical patent/JPS5515422A/en
Publication of JPS5515422A publication Critical patent/JPS5515422A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

PURPOSE: To obtain a terephthalic acid ester containing a few insoluble fine particles, by adding a heat stabilizer before the first reactor and a polymerization catalyst after the second one, using a plurality of reactors in series.
CONSTITUTION: Terephthalic acid is esterified with ethylene glycol in a plurality of reactors. A heat stabilizer, e.g. a phosphorus compound, is added to the reaction system before the first reactor; a polymerization catalyst, e.g. Sb, Ti, Ge, Sn, or Co compound, to the system after the second one. Esterification is carried out up to a rate of reaction of 60W95% in the first reactor, and then up to 92W98% in the reactors after the second one.
EFFECT: Improved color and good operating conditions in spinning and drawing steps due to a few insoluble fine particles. A high catalytic activity in the esterification product.
COPYRIGHT: (C)1980,JPO&Japio
JP8724078A 1978-07-18 1978-07-18 Continuous esterification of terephthalic acid Pending JPS5515422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8724078A JPS5515422A (en) 1978-07-18 1978-07-18 Continuous esterification of terephthalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8724078A JPS5515422A (en) 1978-07-18 1978-07-18 Continuous esterification of terephthalic acid

Publications (1)

Publication Number Publication Date
JPS5515422A true JPS5515422A (en) 1980-02-02

Family

ID=13909283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8724078A Pending JPS5515422A (en) 1978-07-18 1978-07-18 Continuous esterification of terephthalic acid

Country Status (1)

Country Link
JP (1) JPS5515422A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102691131A (en) * 2012-06-19 2012-09-26 福建经纬新纤科技实业有限公司 Manufacturing equipment system of flame-retardant polyester fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102691131A (en) * 2012-06-19 2012-09-26 福建经纬新纤科技实业有限公司 Manufacturing equipment system of flame-retardant polyester fiber

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