JPS56129220A - Production of polyester - Google Patents

Production of polyester

Info

Publication number
JPS56129220A
JPS56129220A JP3093680A JP3093680A JPS56129220A JP S56129220 A JPS56129220 A JP S56129220A JP 3093680 A JP3093680 A JP 3093680A JP 3093680 A JP3093680 A JP 3093680A JP S56129220 A JPS56129220 A JP S56129220A
Authority
JP
Japan
Prior art keywords
carboxylic acid
titanium
catalyst
glycol ester
solution
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
JP3093680A
Other languages
Japanese (ja)
Inventor
Satoshi Hashimoto
Tadashi Kuno
Takamasa Asano
Nobuya Okumura
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP3093680A priority Critical patent/JPS56129220A/en
Publication of JPS56129220A publication Critical patent/JPS56129220A/en
Pending legal-status Critical Current

Links

Landscapes

  • Polyesters Or Polycarbonates (AREA)

Abstract

PURPOSE: To produce a polyester having a high softening point and a good color, by polymerizing a glycol ester of a bifuctional aromatic carboxylic acid (low polymer thereof) in the presence of a homogeneous solution of a specified polycondensation catalyst.
CONSTITUTION: A homogeneous solution of a polycondensation catalyst is obtained by dissolving a mixture of 1mol of titanium tetraalkoxide such as titanium tetrapropoxide or titanium tetrabutoxide and 0.5W0.6mol of organic carboxylic acid such as acetic acid or benzoic acid in an organic solvent such as ethanol or benzene. Next, the catalyst solution thus prepared is added to a glycol ester of a bifunctional aromatic carboxylic acid and/or a low polymer thereof so that the catalyst solution is present in an amount of 0.001W0.05mol% (calculated as Ti) with respect to the bifunctional carboxylic acid component. The resulting mixture, then, is polycondensed under pressure at a temperature higher than the m.p. and lower than 300°C.
COPYRIGHT: (C)1981,JPO&Japio
JP3093680A 1980-03-13 1980-03-13 Production of polyester Pending JPS56129220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3093680A JPS56129220A (en) 1980-03-13 1980-03-13 Production of polyester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3093680A JPS56129220A (en) 1980-03-13 1980-03-13 Production of polyester

Publications (1)

Publication Number Publication Date
JPS56129220A true JPS56129220A (en) 1981-10-09

Family

ID=12317556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3093680A Pending JPS56129220A (en) 1980-03-13 1980-03-13 Production of polyester

Country Status (1)

Country Link
JP (1) JPS56129220A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494789A (en) * 1972-04-26 1974-01-16
JPS497353A (en) * 1972-05-12 1974-01-23
JPS5033290A (en) * 1973-07-25 1975-03-31
JPS5149295A (en) * 1974-10-28 1976-04-28 Teijin Ltd Horiesuteruno seizohoho
JPS5257289A (en) * 1975-11-05 1977-05-11 Teijin Ltd Production of polyester
JPS53113893A (en) * 1977-03-17 1978-10-04 Teijin Ltd Preparation of polyester

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS494789A (en) * 1972-04-26 1974-01-16
JPS497353A (en) * 1972-05-12 1974-01-23
JPS5033290A (en) * 1973-07-25 1975-03-31
JPS5149295A (en) * 1974-10-28 1976-04-28 Teijin Ltd Horiesuteruno seizohoho
JPS5257289A (en) * 1975-11-05 1977-05-11 Teijin Ltd Production of polyester
JPS53113893A (en) * 1977-03-17 1978-10-04 Teijin Ltd Preparation of polyester

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