JPS5749615A - Preparation of polyester having high polymerization degree - Google Patents
Preparation of polyester having high polymerization degreeInfo
- 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
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
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)
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 |
-
1980
- 1980-09-08 JP JP12341680A patent/JPS5749615A/en active Pending
Cited By (2)
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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