| abstract |
THE PRESENT INVENTION CONCERNS CONFORMABLE HIGH MOLECULAR MASS THERMOTROPIC COPOLYESTERS. THESE COPOLYESTERS CONSTITUTE UNITS OF THE FORMULA: (- O-X-O-) A, (-O-X-O-) B, (-O-X-O-) C; -CO-Y-CO-; -CO-Z-CO-; IN WHICH X REPRESENTS A MONOSUBSTITUTED PARAPHENYLENE RADICAL; X AN NON-SUBSTITUTED RADICAL 1,4-PHENYLENE; X A DISUBSTITUTED PARAPHENYLENE RADICAL, A DIPHENYLENE-4,4 RADICAL OR A P-P-DIPHENYLENE ETHER RADICAL; WITH 0.4A1.0B 0.6.0C0.1, AND ABC1; Y REPRESENTS A CYCLOHEXYLENE-1,4 RADICAL, A RADICAL HAVING TWO PHENYLENE GROUPS CONNECTED TO BETWEEN THEM BY A SINGLE LINK OR AN ACYCLIC CHAIN, OR A DIVALENT AROMATIC RADICAL HAVING AT LEAST TWO CONDENSED PHENYL CORES; Z REPRESENTS A RADICAL- (CH) - WITH 3N10; THE ZYZ MOLAR RATIO IS BETWEEN 20 AND 50. THESE POLYESTERS ALLOW TO OBTAIN MOLDED OBJECTS, THREADS AND FILMS. |