JPS5699224A - Preparation of polyester - Google Patents

Preparation of polyester

Info

Publication number
JPS5699224A
JPS5699224A JP297080A JP297080A JPS5699224A JP S5699224 A JPS5699224 A JP S5699224A JP 297080 A JP297080 A JP 297080A JP 297080 A JP297080 A JP 297080A JP S5699224 A JPS5699224 A JP S5699224A
Authority
JP
Japan
Prior art keywords
polycondensation
compound
polyester
beginning
preparation
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
JP297080A
Other languages
Japanese (ja)
Other versions
JPS6136780B2 (en
Inventor
Seiji Sakamoto
Akira Sato
Tetsuo Nishimura
Masaji Watanabe
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.)
Diafoil Co Ltd
Original Assignee
Diafoil 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 Diafoil Co Ltd filed Critical Diafoil Co Ltd
Priority to JP297080A priority Critical patent/JPS5699224A/en
Publication of JPS5699224A publication Critical patent/JPS5699224A/en
Publication of JPS6136780B2 publication Critical patent/JPS6136780B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To prepare a polyester with excellent characteristics, for the formation of a film, by adding a Ca compound and a P compound at a point of time after the completion of ester exchange reaction but before the beginning of polycondensation, in the preparation of a polyester by use of an acid component and a glycol component.
CONSTITUTION: In the preparation of a polyester by use of a low alkyl terephthalate (e.g., dimethyl terephthalate), as an acid component, and of ethylene glycol, as a glycol component, about 0.05W0.4mol% of a soluble calcium compound (e.g., calcium acetate) is added before the beginning of polycondensation, and two kinds of phosphorus compound (a mixture of a trialkyl phoshate with a trialkyl phosphite in a mol ratio of 1W20) in an amount 1W4 times as much as said calcium compound in mol, is added after the completion of ester exchage reaction but before the beginning of polycondensation, to the reaction system, which is subjected to polycondensation after being kept at 220W250°C for 10W15min.
COPYRIGHT: (C)1981,JPO&Japio
JP297080A 1980-01-14 1980-01-14 Preparation of polyester Granted JPS5699224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP297080A JPS5699224A (en) 1980-01-14 1980-01-14 Preparation of polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP297080A JPS5699224A (en) 1980-01-14 1980-01-14 Preparation of polyester

Publications (2)

Publication Number Publication Date
JPS5699224A true JPS5699224A (en) 1981-08-10
JPS6136780B2 JPS6136780B2 (en) 1986-08-20

Family

ID=11544223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP297080A Granted JPS5699224A (en) 1980-01-14 1980-01-14 Preparation of polyester

Country Status (1)

Country Link
JP (1) JPS5699224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57119923A (en) * 1981-01-16 1982-07-26 Diafoil Co Ltd Manufacture of polyester

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS504710A (en) * 1972-12-21 1975-01-18
JPS50144798A (en) * 1974-05-11 1975-11-20
JPS5490294A (en) * 1977-12-27 1979-07-17 Daiafoil Preparation of polyester

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS504710A (en) * 1972-12-21 1975-01-18
JPS50144798A (en) * 1974-05-11 1975-11-20
JPS5490294A (en) * 1977-12-27 1979-07-17 Daiafoil Preparation of polyester

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57119923A (en) * 1981-01-16 1982-07-26 Diafoil Co Ltd Manufacture of polyester
JPH0329810B2 (en) * 1981-01-16 1991-04-25

Also Published As

Publication number Publication date
JPS6136780B2 (en) 1986-08-20

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