JPS55161823A - Production of polyester having high polymerization degree - Google Patents

Production of polyester having high polymerization degree

Info

Publication number
JPS55161823A
JPS55161823A JP6986479A JP6986479A JPS55161823A JP S55161823 A JPS55161823 A JP S55161823A JP 6986479 A JP6986479 A JP 6986479A JP 6986479 A JP6986479 A JP 6986479A JP S55161823 A JPS55161823 A JP S55161823A
Authority
JP
Japan
Prior art keywords
polyester
degree
production
polymerization degree
acid
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
JP6986479A
Other languages
Japanese (ja)
Other versions
JPS6346090B2 (en
Inventor
Shunichi Matsumura
Hiroo Inada
Makoto Ogasawara
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 JP6986479A priority Critical patent/JPS55161823A/en
Priority to US06/144,036 priority patent/US4331800A/en
Priority to CA000351127A priority patent/CA1151342A/en
Publication of JPS55161823A publication Critical patent/JPS55161823A/en
Publication of JPS6346090B2 publication Critical patent/JPS6346090B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To produce a polyester having a high polymn. degree by rapidly increasing a polym. degree, by a method wherein a linear satd. polyester in which at least 50% of the whole terminal gp. is carboxyl gp. is reacted with a cpd. having a specified structure in a molten state.
CONSTITUTION: (A) A linear satd. polyester in which at least 50% of the whole terminal gp. is carboxyl gp. is reacted with (B) 0.1W10wt% (based on the weight of the polyester) of a cpd. of the formula (wherein D is alkylene, cycloalkylene, aralkylene, arylene having 7 or more carbon atoms; R1WR8 are H, C1 hydrocarbon gp.) in the molten state of the polyester to produce a polyester having a high polymn. degree. A preferable dicarboxylic acid useful as the acid component of (A) is terephthalic acid. When the acid component is a dicarboxylic acid, tetramethylene glycol is used as a glycol component.
COPYRIGHT: (C)1980,JPO&Japio
JP6986479A 1979-05-02 1979-06-06 Production of polyester having high polymerization degree Granted JPS55161823A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP6986479A JPS55161823A (en) 1979-06-06 1979-06-06 Production of polyester having high polymerization degree
US06/144,036 US4331800A (en) 1979-05-02 1980-04-28 Process for producing aromatic polyesters having an increased degree of polymerization
CA000351127A CA1151342A (en) 1979-05-02 1980-05-02 Process for producing aromatic polyesters having an increased degree of polymerization

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6986479A JPS55161823A (en) 1979-06-06 1979-06-06 Production of polyester having high polymerization degree

Publications (2)

Publication Number Publication Date
JPS55161823A true JPS55161823A (en) 1980-12-16
JPS6346090B2 JPS6346090B2 (en) 1988-09-13

Family

ID=13415084

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6986479A Granted JPS55161823A (en) 1979-05-02 1979-06-06 Production of polyester having high polymerization degree

Country Status (1)

Country Link
JP (1) JPS55161823A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5953529A (en) * 1982-09-22 1984-03-28 Teijin Ltd Manufacture of polyester
JPS6399228A (en) * 1986-06-23 1988-04-30 Teijin Ltd Production of polyester having high polymerization degree
US5391700A (en) * 1993-04-27 1995-02-21 Nippon Shokubai Co., Ltd. Process for producing polyester by ring-opening copolymerization

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5059525A (en) * 1973-09-24 1975-05-22

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5059525A (en) * 1973-09-24 1975-05-22

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5953529A (en) * 1982-09-22 1984-03-28 Teijin Ltd Manufacture of polyester
JPS6399228A (en) * 1986-06-23 1988-04-30 Teijin Ltd Production of polyester having high polymerization degree
US5391700A (en) * 1993-04-27 1995-02-21 Nippon Shokubai Co., Ltd. Process for producing polyester by ring-opening copolymerization

Also Published As

Publication number Publication date
JPS6346090B2 (en) 1988-09-13

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