JPS5785818A - Production of polybutylene terephthalate - Google Patents

Production of polybutylene terephthalate

Info

Publication number
JPS5785818A
JPS5785818A JP16226580A JP16226580A JPS5785818A JP S5785818 A JPS5785818 A JP S5785818A JP 16226580 A JP16226580 A JP 16226580A JP 16226580 A JP16226580 A JP 16226580A JP S5785818 A JPS5785818 A JP S5785818A
Authority
JP
Japan
Prior art keywords
polybutylene terephthalate
butanediol
derivative
alkali metal
metal salt
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.)
Granted
Application number
JP16226580A
Other languages
Japanese (ja)
Other versions
JPS6340209B2 (en
Inventor
Tetsuya Sugita
Koichi Ikeyama
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP16226580A priority Critical patent/JPS5785818A/en
Publication of JPS5785818A publication Critical patent/JPS5785818A/en
Publication of JPS6340209B2 publication Critical patent/JPS6340209B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

PURPOSE: To obtain polybutylene terephthalate excellent in heat stability, etc., by adding an alkali metal salt of hypophosphorous acid prior to the completion of the polycondensation reaction, in reacting terephthalic acid (derivative) with 1,4-butanediol.
CONSTITUTION: In producing polybutylene terephthalate from 1,4-butanediol and terephthalic acid or its derivative, e.g., dimethyl terephthalate, an alkali metal salt of hypophosphorous acid in an amount of 50W2,000ppm based on the polybutylene formed is added after the esterification or transesterification reaction and before the start of the polycondensation reaction, and the mixture is polycondensed. This can prevent discoloration of polybutylene terephthalate, improve hydrolysis resistance, heat resistance, etc., decrease the amount of tetrahydrofuran produced as a by-product, and provide good-quality polybutylene terephthalate.
COPYRIGHT: (C)1982,JPO&Japio
JP16226580A 1980-11-18 1980-11-18 Production of polybutylene terephthalate Granted JPS5785818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16226580A JPS5785818A (en) 1980-11-18 1980-11-18 Production of polybutylene terephthalate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16226580A JPS5785818A (en) 1980-11-18 1980-11-18 Production of polybutylene terephthalate

Publications (2)

Publication Number Publication Date
JPS5785818A true JPS5785818A (en) 1982-05-28
JPS6340209B2 JPS6340209B2 (en) 1988-08-10

Family

ID=15751156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16226580A Granted JPS5785818A (en) 1980-11-18 1980-11-18 Production of polybutylene terephthalate

Country Status (1)

Country Link
JP (1) JPS5785818A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57147516A (en) * 1981-03-06 1982-09-11 Teijin Ltd Preparation of polyester
JPS5920351A (en) * 1982-07-27 1984-02-02 Mitsubishi Chem Ind Ltd Polyester resin composition
JP2001114881A (en) * 1999-10-15 2001-04-24 Toray Ind Inc Method for producing polyester and polyester composition
JP2002322352A (en) * 2001-04-24 2002-11-08 Mitsubishi Engineering Plastics Corp Polybutyleneterephthalate resin composition and its molding
WO2007043547A1 (en) * 2005-10-05 2007-04-19 Teijin Limited Polylactic acid composition
JP2007099939A (en) * 2005-10-05 2007-04-19 Teijin Ltd Composition containing polylactic acid
JP2007099934A (en) * 2005-10-05 2007-04-19 Teijin Ltd Composition containing polylactic acid
JP2015028141A (en) * 2013-07-02 2015-02-12 三菱化学株式会社 Method for producing polybutylene terephthalate
JP2018035338A (en) * 2015-09-04 2018-03-08 三菱ケミカル株式会社 Polyester resin

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5491589A (en) * 1977-12-29 1979-07-20 New Japan Chem Co Ltd Preparation of polyester-type plasticizer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5491589A (en) * 1977-12-29 1979-07-20 New Japan Chem Co Ltd Preparation of polyester-type plasticizer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57147516A (en) * 1981-03-06 1982-09-11 Teijin Ltd Preparation of polyester
JPS5920351A (en) * 1982-07-27 1984-02-02 Mitsubishi Chem Ind Ltd Polyester resin composition
JP2001114881A (en) * 1999-10-15 2001-04-24 Toray Ind Inc Method for producing polyester and polyester composition
JP2002322352A (en) * 2001-04-24 2002-11-08 Mitsubishi Engineering Plastics Corp Polybutyleneterephthalate resin composition and its molding
WO2007043547A1 (en) * 2005-10-05 2007-04-19 Teijin Limited Polylactic acid composition
JP2007099939A (en) * 2005-10-05 2007-04-19 Teijin Ltd Composition containing polylactic acid
JP2007099934A (en) * 2005-10-05 2007-04-19 Teijin Ltd Composition containing polylactic acid
US8575302B2 (en) 2005-10-05 2013-11-05 Teijin Limited Polylactide composition
JP2015028141A (en) * 2013-07-02 2015-02-12 三菱化学株式会社 Method for producing polybutylene terephthalate
JP2018035338A (en) * 2015-09-04 2018-03-08 三菱ケミカル株式会社 Polyester resin

Also Published As

Publication number Publication date
JPS6340209B2 (en) 1988-08-10

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