JPS5744622A - Preparation of powdery aromatic polyester - Google Patents
Preparation of powdery aromatic polyesterInfo
- Publication number
- JPS5744622A JPS5744622A JP12051480A JP12051480A JPS5744622A JP S5744622 A JPS5744622 A JP S5744622A JP 12051480 A JP12051480 A JP 12051480A JP 12051480 A JP12051480 A JP 12051480A JP S5744622 A JPS5744622 A JP S5744622A
- Authority
- JP
- Japan
- Prior art keywords
- component
- polymerization
- aromatic polyester
- stirring blades
- formula
- 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
Links
Landscapes
- Polyesters Or Polycarbonates (AREA)
Abstract
PURPOSE: To prepare an aromatic polyester composed of specific constituent unit, in powdery form, by reversing the rotation of the stirring blades of a vertical polymerizer during the polymerization, thereby changing the shear force applied to the polymer.
CONSTITUTION: A powdery aromatic polyester consisting of the constituent units of formula I, formula II and formula III (X is hydrocarbon group, O, SO2, S, or CO; m is 0 or 1; n is 0 or 1; the substituent groups of the aromatic ring are para- or meta-positions each other) wherein the ratio of the component I to the component II is 1:0W1:10, and that of the component II to the component III is 9:10W10:9, can be prepared using a vertical polymerizer furnished with stirring blades, by starting the polymerization rotating the stirring blades horizontally to a direction, and when the reaction system becomes viscous by the progress of polymerization, reversing the rotation of the blades, and repeating the reversion at regular intervals, thereby changing the shearing force applied to said polymer.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12051480A JPS5744622A (en) | 1980-08-29 | 1980-08-29 | Preparation of powdery aromatic polyester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12051480A JPS5744622A (en) | 1980-08-29 | 1980-08-29 | Preparation of powdery aromatic polyester |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5744622A true JPS5744622A (en) | 1982-03-13 |
JPH023808B2 JPH023808B2 (en) | 1990-01-25 |
Family
ID=14788099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12051480A Granted JPS5744622A (en) | 1980-08-29 | 1980-08-29 | Preparation of powdery aromatic polyester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5744622A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007217502A (en) * | 2006-02-15 | 2007-08-30 | Unitika Ltd | Method for producing polyarylate |
-
1980
- 1980-08-29 JP JP12051480A patent/JPS5744622A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007217502A (en) * | 2006-02-15 | 2007-08-30 | Unitika Ltd | Method for producing polyarylate |
Also Published As
Publication number | Publication date |
---|---|
JPH023808B2 (en) | 1990-01-25 |
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