JPS57117528A - Wholly aromatic polyether ester - Google Patents
Wholly aromatic polyether esterInfo
- Publication number
- JPS57117528A JPS57117528A JP321181A JP321181A JPS57117528A JP S57117528 A JPS57117528 A JP S57117528A JP 321181 A JP321181 A JP 321181A JP 321181 A JP321181 A JP 321181A JP S57117528 A JPS57117528 A JP S57117528A
- Authority
- JP
- Japan
- Prior art keywords
- polymerization
- phenylenedioxy
- removal
- molten state
- structure unit
- 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
- Polyesters Or Polycarbonates (AREA)
Abstract
PURPOSE: The titled novel crystalline polymer having improved heat resistance, flame retardance, mechanical and electrical properties in both films and molded articles, capable of being polymerized in molten state and molded in molten state, consisting of a specific structure unit.
CONSTITUTION: The desired polymer consisting of a structure unit shown by the formula (Ar is p-phenylene group or 4, 4'-biphenylene group) is obtained by melt polymerization at 270W350°C, for example, by (A) a polymerization through removal of acetic acid wherein hydroquinone diacetate or 4,4'-diacetoxy biphenyl and 3,3'-(p-phenylenedioxy)dibenzoic acid are used or by (B) a polymerization through removal of phenol wherein hydroquinone or 4,4-dihydroxy biphenyl is reacted with 3,3'-(p-phenylenedioxy)dibenzoic acid diphenyl ester in the presence of a polymerization catalyst (e.g., titanium tetrabutoxide, etc.).
USE: Filters, heat-resistant electrical insulation, cover for electrical equipment, fibers for rubber reinforcement, etc.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP321181A JPS57117528A (en) | 1981-01-14 | 1981-01-14 | Wholly aromatic polyether ester |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP321181A JPS57117528A (en) | 1981-01-14 | 1981-01-14 | Wholly aromatic polyether ester |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57117528A true JPS57117528A (en) | 1982-07-22 |
Family
ID=11551103
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP321181A Pending JPS57117528A (en) | 1981-01-14 | 1981-01-14 | Wholly aromatic polyether ester |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57117528A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0348665A2 (en) * | 1988-06-28 | 1990-01-03 | General Electric Company | Liquid crystalline polyesters |
-
1981
- 1981-01-14 JP JP321181A patent/JPS57117528A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0348665A2 (en) * | 1988-06-28 | 1990-01-03 | General Electric Company | Liquid crystalline polyesters |
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