Fabricable infusible para-oxybenzoyl polyester production
Abstract
Abstract POLYESTERS ARE PRODUCED WITH CONSIST ESSENTIALLY OF RECURRYING P-OXYBENZOYL STRUCTURAL UNITS AND WHICH ARE INFUSIBLE AND VERY THERMALLY STABLE, BUT WHICH ARE FABRICABLE BY VITURE OF A REVERSIBLE CRYSTALLINE TRANSISTION WHICH OCCURS IN THE TEMPERATURE RANGE FROM ABOUT 330* C. TO ABOUT 360* C. SUCH POLYESTERS ARE PRODUCED BY HEATING P-ACETOXYBENZOIC ACID IN AN INERT, HIGH BOILING LIQUID HEAT TRANSFER MEDIUM TO A TEMPERATURE ABOVE 300* C. BUT BELOW ABOUR 425* C., AND MAINTAINING THE TEMPERATURE IN THE SPECIFIED RANGE UNTIL SUFFICIENT CONDENSATION HAS OCCURED TO PRODUCE THE DESIRED POLYESTER. IN ADDITION TO BEING INFUSIBLE, THERMALLY STABLE AND FABRICABLE, THE POLYESTERS ARE CHARACTERIZED BY EXCELLENT CHEMICAL, MECHANICAL, ELECTRICAL AND THERMAL PROPERTIES.
Inventors
- 👤 S Cottis
- 👤 J Economy
- 👤 B Nowak
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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