Claims
- 1. A melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase at a temperature below 350.degree. C. consisting essentially of moieties I and II and optionally also including moiety III and/or moieties IV and V which may include substitution of at least some of the hydrogen atoms present upon an aromatic ring wherein: ##STR12## wherein the bonds illustrated are meta and/or para disposed, IV is a dioxyaryl moiety of the formula --O--Ar--O-- where Ar is a divalent radical comprising at least one aromatic ring, and
- V is a dicarboxyaryl moiety of the formula ##STR13## where Ar' is a divalent radical comprising at least one aromatic ring, and
- with said optional substitution if present being selected from the group consisting of an alkyl group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, halogen, phenyl, and mixtures of the foregoing, and wherein moiety I is present in said wholly aromatic polyester in a concentration of approximately 4 to 65 mole percent, moiety II is present in a concentration of 20 to 65 mole percent, moiety III is present in a concentration of 0 to approximately 65 mole percent, and moiety IV is present in a concentration of 0 to approximately 25 mole percent, with the proviso that the total molar concentration of moieties I and II in said wholly aromatic polyester is approximately 50 to 100 mole percent.
- 2. A melt processable wholly aromatic polyester according to claim 1 which is capable of exhibiting a differential scanning calorimeter melting temperature at a temperature within the range of approximately 250.degree. to 345.degree. C.
- 3. A melt processable wholly aromatic polyester according to claim 1 wherein moieties I, II, III, IV and V are free of ring substitution.
- 4. A melt processable wholly aromatic polyester according to claim 1 wherein moieties IV and V are symmetrically disposed.
- 5. A melt processable wholly aromatic polyester according to claim 1 wherein moiety III is substantially absent and moieties IV and V are each present in a concentration of approximately 15 to 25 mole percent.
- 6. A melt processable wholly aromatic polyester according to claim 6 wherein the moieties IV and V are symmetrically disposed.
- 7. A melt processable wholly aromatic polyester according to claim 1 wherein the bonds of moiety III are para disposed.
- 8. A melt processable wholly aromatic polyester according to claim 1 wherein moiety III is p-oxybenzoyl moiety.
- 9. A melt processable wholly aromatic polyester according to claim 1 wherein moiety IV is a 1,4-dioxyphenylene moiety.
- 10. A melt processable wholly aromatic polyester according to claim 1 wherein moiety V is a terephthaloyl moiety.
- 11. A melt processable wholly aromatic polyester according to claim 1 which exhibits an inherent viscosity of at least 4 when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60.degree. C.
- 12. A melt processable wholly aromatic polyester according to claim 1 which exhibits an inherent viscosity of approximately 4 to 15 when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60.degree. C.
- 13. A fiber which has been melt spun from the wholly aromatic polyester of claim 1.
- 14. A film which has been melt extruded from the wholly aromatic polyester of claim 1.
- 15. A molded article comprising the wholly aromatic polyester of claim 1.
- 16. A molding compound comprising the wholly aromatic polyester of claim 1 which incorporates approximately 1 to 60 percent by weight of a solid filler and/or reinforcing agent.
- 17. A melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase at a temperature below 350.degree. C. consisting essentially of moieties I and II and optionally also including moiety III and/or moieties IV and V which may include substitution of at least some of the hydrogen atoms present upon an aromatic ring wherein: ##STR14## wherein the bonds illustrated are meta and/or para disposed IV is a dioxyaryl moiety of the formula --O--Ar--O-- where Ar is a divalent radical comprising at least one aromatic ring, and
- V is a dicarboxyaryl moiety of the formula ##STR15## where Ar' is a divalent radical comprising at least one aromatic ring, and
- with said optional substitution if present being selected from the group consisting of an alkyl group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, halogen, phenyl, and mixtures of the foregoing, and wherein moiety I is present in said wholly aromatic polyester in a concentration of approximately 20 to 60 mole percent, moiety II is present in a concentration of 20 to 60 mole percent, moiety III is present in a concentration of 0 to approximately 40 mole percent, and moiety IV is present in a concentration of 0 to approximately 25 mole percent, and moiety V is present in a concentration of 0 to approximately 25 mole percent, with the proviso that the total molar concentration of moieties I and II in said wholly aromatic polyester is approximately 50 to 100 mole percent.
- 18. A melt processable wholly aromatic polyester according to claim 17 which is capable of forming an anisotropic melt phase at a temperature below 325.degree. C.
- 19. A melt processable wholly aromatic polyester according to claim 17 which is capable of exhibiting a differential scanning calorimeter melting temperature at a temperature within the range of approximately 250.degree. to 345.degree. C.
- 20. A melt processable wholly aromatic polyester according to claim 17 wherein moieties I, II, III, IV and V are free of ring substitution.
- 21. A melt processable wholly aromatic polyester according to claim 17 wherein moieties IV and V are symmetrically disposed.
- 22. A melt processable wholly aromatic polyester according to claim 17 wherein moiety III is substantially absent and moieties IV and V are each present in a concentration of approximately 15 to 25 mole percent.
- 23. A melt processable wholly aromatic polyester according to claim 22 wherein the moieties IV and V are symmetrically disposed.
- 24. A melt processable wholly aromatic polyester according to claim 17 wherein the bonds of moiety III are para disposed.
- 25. A melt processable wholly aromatic polyester according to claim 17 wherein moiety III is p-oxybenzoyl moiety.
- 26. A melt processable wholly aromatic polyester according to claim 17 wherein moiety IV is a 1,4-dioxyphenylene moiety.
- 27. A melt processable wholly aromatic polyester according to claim 17 wherein moiety V is a terephthaloyl moiety.
- 28. A melt processable wholly aromatic polyester according to claim 17 which exhibits an inherent viscosity of at least 4 when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60.degree. C.
- 29. A melt processable wholly aromatic polyester according to claim 17 which exhibits an inherent viscosity of approximately 4 to 15 when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60.degree. C.
- 30. A fiber which has been melt spun from the wholly aromatic polyester of claim 17.
- 31. A film which has been melt extruded from the wholly aromatic polyester of claim 17.
- 32. A molded article comprising the wholly aromatic polyester of claim 17.
- 33. A molding compound comprising the wholly aromatic polyester of claim 17 which incorporates approximately 1 to 60 percent by weight of a solid filler and/or reinforcing agent.
- 34. A melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase at a temperature below 350.degree. C. which consists of moieties I and II which may include substitution of at least some of the hydrogen atoms present upon an aromatic ring wherein: ##STR16## with said optional substitution if present being selected from the group consisting of an alkyl group of 1 to 4 carbon atoms, and alkoxy group of 1 to 4 carbon atoms, halogen, phenyl, and mixtures of the foregoing wherein moiety I is present in said wholly aromatic polyester in a concentration of approximately 35 to 65 mole percent, and moiety II is present in said wholly aromatic polyester in a concentration of approximately 35 to 65 mole percent.
- 35. A melt processable wholly aromatic polyester according to claim 34 which is capable of forming an anisotropic melt phase at a temperature below 325.degree. C.
- 36. A melt processable wholly aromatic polyester according to claim 34 which is capable of exhibiting a differential scanning calorimeter melting temperature at a temperature within the range of approximately 300.degree. to 345.degree. C.
- 37. A melt processable wholly aromatic polyester according to claim 34 wherein moieties I and II are free of ring substitution.
- 38. A melt processable wholly aromatic polyester according to claim 34 wherein moiety I is present in a concentration of approximately 40 to 60 mole percent, and moiety II is present in a concentration of approximately 40 to 60 mole percent.
- 39. A fiber which has been melt spun from the wholly aromatic polyester of claim 34.
- 40. A film which has been melt extruded from the wholly aromatic polyester of claim 34.
- 41. A molded article comprising the wholly aromatic polyester of claim 34.
- 42. A molding compound comprising the wholly aromatic polyester of claim 34 which incorporates approximately 1 to 60 percent by weight of a solid filler and/or reinforcing agent.
- 43. A melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase at a temperature below 325.degree. C. which consists of moieties I, II and III which may include substitution of at least some of the hydrogen atoms present upon an aromatic ring wherein: ##STR17## with said optional substitution if present being selected from the group consisting of an alkyl group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, halogen, phenyl, and mixtures of the foregoing wherein moiety I is present in said wholly aromatic polyester in a concentration of approximately 20 to 60 mole percent, moiety II is present in a concentration of approximately 20 to 60 mole percent, and moiety III is present in a concentration of approximately 10 to 40 mole percent, with the proviso that the total molar concentration of moieties I and II in said wholly aromatic polyester is approximately 50 to 90 mole percent.
- 44. A melt processable wholly aromatic polyester according to claim 43 which is capable of forming an anisotropic melt phase at a temperature below 300.degree. C.
- 45. A melt processable wholly aromatic polyester according to claim 43 which is capable of exhibiting a differential scanning calorimeter melting temperature at a temperature within the range of approximately 250.degree. to 325.degree. C.
- 46. A melt processable wholly aromatic polyester according to claim 43 wherein moieties I, II and III are free of ring substitution.
- 47. A melt processable wholly aromatic polyester according to claim 43 wherein moiety I is present in a concentration of approximately 20 to 60 mole percent, moiety II is present in a concentration of approximately 20 to 60 mole percent, and moiety III is present in a concentration of approximately 15 to 40 mole percent, with the proviso that the total molar concentration of moieties I and II in said wholly aromatic polyester is approximately 50 to 85 mole percent.
- 48. A fiber which has been melt spun from the wholly aromatic polyester of claim 43.
- 49. A film which has been melt extruded from the wholly aromatic polyester of claim 43.
- 50. A molded article comprising the wholly aromatic polyester of claim 43.
- 51. A molding compound comprising the wholly aromatic polyester of claim 43 which incorporates approximately 1 to 60 percent by weight of a solid filler and/or reinforcing agent.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of U.S. Ser. No. 402,882, filed July 29, 1982 (now abandoned).
US Referenced Citations (6)
Continuation in Parts (1)
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Number |
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402882 |
Jul 1982 |
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