JPS57205422A - Production of polyester - Google Patents

Production of polyester

Info

Publication number
JPS57205422A
JPS57205422A JP8873281A JP8873281A JPS57205422A JP S57205422 A JPS57205422 A JP S57205422A JP 8873281 A JP8873281 A JP 8873281A JP 8873281 A JP8873281 A JP 8873281A JP S57205422 A JPS57205422 A JP S57205422A
Authority
JP
Japan
Prior art keywords
polyester
compound
added
lithium
ethylene glycol
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
JP8873281A
Other languages
Japanese (ja)
Inventor
Seiji Sakamoto
Kazuo Endo
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 JP8873281A priority Critical patent/JPS57205422A/en
Publication of JPS57205422A publication Critical patent/JPS57205422A/en
Pending legal-status Critical Current

Links

Landscapes

  • Polyesters Or Polycarbonates (AREA)

Abstract

PURPOSE: To obtain a polyester capable of providing abrasion-resistant films, by adding a phosphorus compound in a specified mol ratio to an Li compound used as a catalyst at specified two points of time in the production of a polyester.
CONSTITUTION: In transesterifying an acid component based on a lower alkyl terephthalate with a glycol component based on ethylene glycol, an ethylene glycol-soluble lithium compound (e.g., lithium acetate) and below 0.4 molar time, based on lithium compound, of a phosphorus compound (e.g., trimethyl phosphate) are added to the reaction system. After completion of the transesterification, a trialkyl phosphate is added so that the total mols of the phosphorus compounds added is 0.5W2 times the mols of the lithium compound and, subsequently the reaction mixture is subjected to a polycondensation reaction to obtain the purpose polyester.
COPYRIGHT: (C)1982,JPO&Japio
JP8873281A 1981-06-09 1981-06-09 Production of polyester Pending JPS57205422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8873281A JPS57205422A (en) 1981-06-09 1981-06-09 Production of polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8873281A JPS57205422A (en) 1981-06-09 1981-06-09 Production of polyester

Publications (1)

Publication Number Publication Date
JPS57205422A true JPS57205422A (en) 1982-12-16

Family

ID=13951088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8873281A Pending JPS57205422A (en) 1981-06-09 1981-06-09 Production of polyester

Country Status (1)

Country Link
JP (1) JPS57205422A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7357229B2 (en) 2002-05-29 2008-04-15 Kayaba Industry Co., Ltd. Electromagnetic shock absorber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7357229B2 (en) 2002-05-29 2008-04-15 Kayaba Industry Co., Ltd. Electromagnetic shock absorber

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