JPS5515423A - Continuous esterification of terephthalic acid - Google Patents

Continuous esterification of terephthalic acid

Info

Publication number
JPS5515423A
JPS5515423A JP8724178A JP8724178A JPS5515423A JP S5515423 A JPS5515423 A JP S5515423A JP 8724178 A JP8724178 A JP 8724178A JP 8724178 A JP8724178 A JP 8724178A JP S5515423 A JPS5515423 A JP S5515423A
Authority
JP
Japan
Prior art keywords
reactors
reactor
terephthalic acid
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
JP8724178A
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 JP8724178A priority Critical patent/JPS5515423A/en
Publication of JPS5515423A publication Critical patent/JPS5515423A/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

  • 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 polymerization catalyst before the first reactor and a heat stabilizer after the second one, using a plurality of reactors in series.
CONSTITUTION: Therephthalic acid is esterified with ethylene glycol in a plurality of reactors in series. A polymerization catalyst, e.g. Ti, Ge, Sn, or Co compound, is added to the reaction system before the first reactor; a heat stabilizer, e.g. a phosphate or triphosphite, to the system after the second one. Esterification is carried up to a rate of reaction of 60W95% in the first reactor and then up to 92W 98% in the reactors after the second one.
EFFECT: Improved color and good operating condition in spinning and drawing steps due to almost complete suppressed formation of insoluble fine particles. A high catalytic a ctivity in the esterification product.
COPYRIGHT: (C)1980,JPO&Japio
JP8724178A 1978-07-18 1978-07-18 Continuous esterification of terephthalic acid Pending JPS5515423A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8724178A JPS5515423A (en) 1978-07-18 1978-07-18 Continuous esterification of terephthalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8724178A JPS5515423A (en) 1978-07-18 1978-07-18 Continuous esterification of terephthalic acid

Publications (1)

Publication Number Publication Date
JPS5515423A true JPS5515423A (en) 1980-02-02

Family

ID=13909310

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8724178A Pending JPS5515423A (en) 1978-07-18 1978-07-18 Continuous esterification of terephthalic acid

Country Status (1)

Country Link
JP (1) JPS5515423A (en)

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