Thermoplastic copolyetheresters based on 2,6-naphthalene-dicarboxylic acid
Abstract
Abstract A SEGMENTED THERMOPLASTIC COPOLYETHERESTER CONTAINING RECURRING POLYMERIC LONG CHAIN ESTER UNITS DERIVED PREDOMINANTLY FROM 2,6-NAPHTHALENEDICARBOXYLIC ACID AND LONG CHAIN GLYCOLS AND SHORT CHAIN ESTER UNITS DERIVED PREDOMINANTLY FROM 2,6-NAPHTHALENEDIACARBOXYLIC ACID AND LOW MOLECULAR WEIGHT DIOLS. AT LEAST ABOUT 91% AND PREFERABLY ABOUT 95% OF THE TOTAL NUMBER OF SHORT CHAIN ESTER UNITS MUST BE DERIVED FROM 2,6-NAPHTHALENEDICARBOXYLIC ACID AND A SINGLE LOW MOLECULAR WEIGHT DIOL, PREFERABLY AN ALIPHATIC STRAIGHT-CHAIN DIOL CONTAINING 3, 5 OR 7-10 CARBON ATOMS. A POLYMER IN THE FIBER-FORMING MOLECULAR WEIGHT RANGE FORMED SOLELY FROM THE TOTAL SHORT CHAIN ESTER UNITS WOULD HAVE A MELTING POINT OF BETWEEN 100 AND 199*C.
Inventors
- 👤 J Wolfe
Bibliographic Details
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