Linear polyesters of 1, 4-cyclohexanedi-carboxylic acid and aromatic diols

Claim 1

A LINEAR HIGHLY POLYMERIC FIBER-FORMING POLYESTER OF : COMPONENT (A) CONSISTING OF FROM ONE TO TWO DIBASIC CARBOXYLIC ACIDS SELECTED FROM THE GROUP CONSISTING OF TRANS-1,4-CYCLOHEXANEDICARBOXYLIC ACID, 4,4''-SULFONYLDIBENZOIC ACID, 4,4''-DIPHENIC ACID, TEREPHTHALIC ACID, ISOPHTHALIC ACID, CIS-1,4-CYCLOHEXANEDICARBOXYLIC ACID AND ALIPHATIC DICARBOXYLIC ACIDS HAVING FROM 1 TO 10 CARBON ATOMS, WHEREIN AT LEAST 70 MOLE PERCENT OF SAID COMPONENT (A) IS SAID TRANS-4, 4-CYCLOHEXANEDICARBOXYLIC ACID, AND COMPONENT (B) CONSISTING OF FROM ONE TO TWO DIOLS SELECTED FROM THE GROUP CONSISTING OF: (A) 4,4''-DIHYDROXYDIPHENYL-2,2-PROPANE, (B) A 4,4''-DHYDROXYDIARYL SUBSTITUTED HYDROCARBON WHEREIN SAID HYDROCARBON IS A DIVALENT ALIPHATIC RADICAL HAVING FROM 4 TO 40 CARBON ATOMS AND EACH OF SAID ARYL RADICALS IS A MEMBER OF THE BENZENE SERIES CONTAINING FROM 6 TO 9 CARBON ATOMS AND IS SUBSTITUTED WITH FROM NONE TO TWO CHLORINE ATOMS, (C) 1,4-DIHYDROXYNAPHTHALENE AND DERIVATIVES THEREOF IN WHICH AS MANY AS 4 NUCLEAR HYDROGEN ATOMS HAVE BEEN ADDED IN WHICH THE HYDROXY RADICALS ARE ATTACHED TO AN ARYL NUCLEUS, AND (D) 9,10-DIHYDROXYANTHRACENE AND DERIVATIVES THEREOF IN WHICH AS MANY AS 8 NUCLEAR HYDROGEN ATOMS HAVE BEEN ADDED IN WHICH THE HYDROXY RADICALS ARE ATTACHED TO AN ARYL NUCLEUS; AND AS TO SAID POLYESTER: (1) WHEN SAID DIOL (A) IS THE SOLE DIOL, SAID ACID COMPONENT (A) MUST CONSISTO FO FROM 70 TO 90 MOLE PERCENT OF SAID TRANS-1,4CYCLOHEXANEDICARBOXYLIC ACID AND FROM 10 TO 30 MOLE PERCENT OF ONE OF SAID OTHER ACIDS, (2) SAID POLYESTER MELTS AT BETWEEN 250*C. AND 350*C., (3) SAID POLYESTER HAS AN INHERENT VISCOSITY OF AT LEAST 0.55 AS MEASURED IN METHYLENE CHLORIDE, AND (4) SAID POLYESTER IS SOLUBLE IN METHYLENE CHLORIDE.