JPS5749615A - Preparation of polyester having high polymerization degree - Google Patents

Preparation of polyester having high polymerization degree

Info

Publication number
JPS5749615A
JPS5749615A JP12341680A JP12341680A JPS5749615A JP S5749615 A JPS5749615 A JP S5749615A JP 12341680 A JP12341680 A JP 12341680A JP 12341680 A JP12341680 A JP 12341680A JP S5749615 A JPS5749615 A JP S5749615A
Authority
JP
Japan
Prior art keywords
polyester
group
compound
formula
polymerization degree
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
JP12341680A
Other languages
Japanese (ja)
Inventor
Shunichi Matsumura
Hiroo Inada
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 JP12341680A priority Critical patent/JPS5749615A/en
Publication of JPS5749615A publication Critical patent/JPS5749615A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To obtain a polyester having high polymerization degree through a reaction at normal pressure or under pressure, by adding a cyclic iminoester compound of a specific structure to a saturated polyester.
CONSTITUTION: A saturated polyester substantially linear, having ≤1 equivalent/ 106g terminal methyl group, e.g., polyethylene terephthalate, etc. is reacted with preferably 0.5W5wt% at least one of cyclic iminoester compounds [e.g., 2,2'- bis( 3,1-benzooxazine-4-one ); 2,8-dimethyl-4H,6H-benzo( 1,2-d; 5,4-d' )bis( 1,3 ) oxazine-4,6-dione, etc. ] shown by the formula I (D and X is bifunctional organic group; ring structure of a group shown by the formula II is 5-6 membered ring) or shown by the formula III (R1 and R2 are monofunctional organic group; A is a compound having tetra valent aromatic group), and, if necessary, a monoepoxy compound, at ≥ the melting point of the polyester to ≤290°C.
COPYRIGHT: (C)1982,JPO&Japio
JP12341680A 1980-09-08 1980-09-08 Preparation of polyester having high polymerization degree Pending JPS5749615A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12341680A JPS5749615A (en) 1980-09-08 1980-09-08 Preparation of polyester having high polymerization degree

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12341680A JPS5749615A (en) 1980-09-08 1980-09-08 Preparation of polyester having high polymerization degree

Publications (1)

Publication Number Publication Date
JPS5749615A true JPS5749615A (en) 1982-03-23

Family

ID=14860010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12341680A Pending JPS5749615A (en) 1980-09-08 1980-09-08 Preparation of polyester having high polymerization degree

Country Status (1)

Country Link
JP (1) JPS5749615A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694008A1 (en) * 1992-07-24 1994-01-28 Atochem Elf Sa Polymers and copolymers derived from the addition of di-amino and di-hydroxy terminated oligomers and bisoxazinones or bisoxazolinones, and process for their preparation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694008A1 (en) * 1992-07-24 1994-01-28 Atochem Elf Sa Polymers and copolymers derived from the addition of di-amino and di-hydroxy terminated oligomers and bisoxazinones or bisoxazolinones, and process for their preparation
US5665855A (en) * 1992-07-24 1997-09-09 Elf Atochem S.A. Polymers and copolymers originating from the addition of oligomers containing diamino and dihydroxy ends and of bisoxazinones or bioxazolinones, and process for obtaining them

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