Solvent resistant polyesters
Abstract
Abstract THIS INVENTION IS FOR A NOVEL CLASS OF LINEAR POLYESTERS HAVING THE REPEATING STRUCTURAL UNIT -(((Y)M-1,4-PHENYLENE)-SO2-((Y)M-1,4-PHENYLENE)-OOC- (C(-Z)(-Z''))N-COO)- WHERE Y IS AN INERT SUBSTITUENT ON THE PHENYLENE NUCLEUS; Z AND Z'' ARE INDIVIDUALLY SELECTED FROM THE GROUP OF HYDROGEN, LOWER ALKYL AND HALOGEN; THE LETTER M IS ANY WHOLE NUMBER FROM AND INCLUDING 0 TO THE NUMBER OF POSITIONS ON THE PHENYLENE NUCLEUS AVAILABLE FOR SUBSTITUTION; AND THE LETTER N IS 1, 3 OR 5. THE POLYMER PREFERABLY HAS SUFFICIENT REPEATING UNITS TO HAVE A MOLECULAR WEIGHT OF AT LEAST 10,000. PREFERRED POLYMERS ARE DERIVED FROM 4,4''SULFONYL DIPHENOL; 4,4''-SULFONYL-DI-(2,6-XYLENOL); 4,4''SULFONYL-BIS-(2,6-DSICHLORO PHENOL) OR 4,4''-SULFONYL-BIS-(2, 6-DIBROMO PHENOL) AND GLUTARIC ACID. THE POLYESTERS OF THIS INVENTION ARE SIMILAR IN STRUCTURE TO POLYESTERS OF THE PRIOR ART, BUT ARE DISTINGUISHABLE THEREFROM BY UNEXPECTEDLY SUPERIOR SOLVENT RESISTANT PROPERTIES.
Inventors
- 👤 Willem F H Borman
Bibliographic Details
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