FIBER FORMING COPOLYESTERS FROM TEREPHTHALIC ACID AND DERIVATIVES OF METHYL OR CHLOROHYDROQUINONE AND 4-HYDROXYPHENYL) ETHER

摘要

TITLE PRODUCTS This invention relates to a class of novel copolyesters derived from terephthalic acid and derivatives of methyl- or chlorohydroquinone and bis(4-hydroxyphenyl)ether, and to the fibers and other shaped articles prepared therefrom. Also comprehended by this invention are the novel, optically anisotropic copolyester melts from which these fibers can be prepared.