US4299756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester of phenyl-4-hydroxybenzoic acid, aromatic diol, and aromatic diacid capable of forming an anisotropic melt
Assignee: Celanese Corp
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Filing: 1980-03-10
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Granted: 1981-11-10
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Expires: 2000-03-10
Abstract
Abstract A novel polyester is provided which has been found to exhibit an optically anisotropic melt phase at a temperature which enables it readily to undergo melt processing to form quality fibers, films, molded articles, etc. The polyester consists essentially of substantial concentrations of 3-phenyl-4-oxybenzoyl and/or 2-phenyl-4-oxybenzoyl moieties in combination with dioxy aryl and dicarboxy aryl moieties in the proportions indicated. In a further embodiment 4-oxybenzoyl and/or 6-oxy-2-naphthoyl moieties also are included. The wholly aromatic polyester is capable of forming an anisotropic melt at a temperature below approximately 350° C., and preferably at a temperature below approximately 320° C.
Inventors
- 👤 Gordon W. Calundann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:01
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6882; C08G63/02; C08G63/60; C08G63/605; C08G63/66; C08G63/664
Claims Analysis
Total Claims: 51
Claim 1
Independent Claim
226 words
A melt processable wholly aromatic polyester capable of forming an anisotropic melt phase at a temperature below approximately 350° C. consisting essentially of moieties I, II, III, and IV wherein: I is selected from the group consisting of: ##STR14## and mixtures thereof, and II is selected from the group consisting of: ##STR15## and mixtures thereof, III is at least one dioxy aryl moiety of the formula: --O--Ar'--O--, where Ar' is a divalent radical comprising at least one aromatic ring, and IV is at least one dicarboxyl aryl moiety of the formula: ##STR16## wherein Ar" is a divalent radical comprising at least one aromatic ring, and wherein at least some of the hydrogen atoms present upon the aromatic ring of moieties III and IV optionally may be replaced by substitution 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, a phenyl group, and mixtures thereof; and wherein moiety I is present in a concentration of approximately 20 to 85 mole percent, moiety II is present in a concentration of approximately 0 to 40 mole percent, moiety III is present in a concentration of in excess of 5 up to approximately 40 mole percent, and moiety IV is present in a concentration in excess of 5 up to approximately 40 mole percent.
Claim 2
Dependent Claim
226 words
A melt processable wholly aromatic polyester capable of forming an anisotropic melt phase at a temperature below approximately 350° C. consisting essentially of moieties I, II, III, and IV wherein: I is selected from the group consisting of: ##STR14## and mixtures thereof, and II is selected from the group consisting of: ##STR15## and mixtures thereof, III is at least one dioxy aryl moiety of the formula: --O--Ar'--O--, where Ar' is a divalent radical comprising at least one aromatic ring, and IV is at least one dicarboxyl aryl moiety of the formula: ##STR16## wherein Ar" is a divalent radical comprising at least one aromatic ring, and wherein at least some of the hydrogen atoms present upon the aromatic ring of moieties III and IV optionally may be replaced by substitution 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, a phenyl group, and mixtures thereof; and wherein moiety I is present in a concentration of approximately 20 to 85 mole percent, moiety II is present in a concentration of approximately 0 to 40 mole percent, moiety III is present in a concentration of in excess of 5 up to approximately 40 mole percent, and moiety IV is present in a concentration in excess of 5 up to approximately 40 mole percent.
Claim 3
Dependent Claim
26 words
A melt processable wholly aromatic polyester according to claim 1 which is capable of forming an anisotropic melt phase at a temperature below approximately 320° C.
Claim 4
Dependent Claim
31 words
A melt processable wholly aromatic polyester according to claim 1 which is capable of exhibiting an anisotropic melt phase at a temperature within the range of approximately 270° to 320° C.
Claim 5
Dependent Claim
20 words
A melt processable wholly aromatic polyester according to claim 1 wherein moieties III, and IV are free of ring substitution.
Claim 6
Dependent Claim
15 words
A melt processable wholly aromatic polyester according to claim 1 wherein moiety I is ##STR17##
Claim 7
Dependent Claim
15 words
A melt processable wholly aromatic polyester according to claim 1 wherein moiety I is ##STR18##
Claim 8
Dependent Claim
15 words
A melt processable wholly aromatic polyester according to claim 1 wherein moiety II is ##STR19##
Claim 9
Dependent Claim
15 words
A melt processable wholly aromatic polyester according to claim 1 wherein moiety II is ##STR20##
Claim 10
Dependent Claim
29 words
A melt processable wholly aromatic polyester according to claim 1 wherein said dioxy aryl moiety III is selected from the group consisting of: ##STR21## and mixtures of the foregoing.
Claim 11
Dependent Claim
29 words
A melt processable wholly aromatic polyester according to claim 1 wherein said dicarboxy aryl moiety IV is selected from the group consisting of: ##STR22## and mixtures of the foregoing.
Claim 12
Dependent Claim
35 words
A melt processable wholly aromatic polyester according to claim 1 which exhibits an inherent viscosity of at least 2.0 dl./gm. when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60° C.
Claim 13
Dependent Claim
35 words
A melt processable wholly aromatic polyester according to claim 1 which exhibits an inherent viscosity of at least 2.5 dl./gm. when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60° C.
Claim 14
Dependent Claim
20 words
A melt processable wholly aromatic polyester according to claim 1 wherein the molar concentration of moiety II is substantially 0.
Claim 15
Dependent Claim
64 words
A melt processable wholly aromatic polyester according to claim 1 which consists essentially of approximately 40 to 70 mole percent of moiety I, approximately 0 mole percent of moiety II, approximately 15 to 30 mole percent of moiety III, and approximately 15 to 30 mole percent of moiety IV, with the proviso that the molar concentrations of moieties III and IV are substantially equal.
Claim 16
Dependent Claim
51 words
A melt processable wholly aromatic polyester according to claim 1 which consists essentially of approximately 30 to 60 mole percent of moiety I, approximately 10 to 40 mole percent of moiety II, approximately 15 to 25 mole percent of moiety III, and approximately 15 to 25 mole percent of moiety IV.
Claim 17
Dependent Claim
15 words
A fiber which has been melt spun from the wholly aromatic polyester of claim 1.
Claim 18
Dependent Claim
15 words
A film which has been melt extruded from the wholly aromatic polyester of claim 1.
Claim 19
Dependent Claim
13 words
A molded article comprising the melt processable wholly aromatic polyester of claim 1.
Claim 20
Dependent Claim
28 words
A molding compound comprising the melt processable wholly aromatic polyester of claim 1 containing approximately 1 to 60 percent by weight of a solid filler and/or reinforcing agent.
Claim 21
Dependent Claim
28 words
A molding compound comprising the melt processable wholly aromatic polyester of claim 1 containing approximately 10 to 35 percent by weight of a solid filler and/or reinforcing agent.
Claim 22
Dependent Claim
29 words
A melt processable wholly aromatic polyester capable of forming an anisotropic melt phase at a temperature below approximately 350° C. consisting essentially of moieties I, III, and IV wherein:
Claim 23
Dependent Claim
29 words
A melt processable wholly aromatic polyester capable of forming an anisotropic melt phase at a temperature below approximately 350° C. consisting essentially of moieties I, III, and IV wherein:
Claim 24
Dependent Claim
168 words
I is ##STR23## III is at least one dioxy aryl moiety of the formula: --O--Ar'--O--, where Ar' is a divalent radical comprising at least one aromatic ring, and IV is at least one dicarboxy aryl moiety of the formula: ##STR24## wherein Ar" is a divalent radical comprising at least one aromatic ring, and wherein at least some of the hydrogen atoms present upon the aromatic ring of moieties III and IV optionally may be replaced by substitution 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, a phenyl group, and mixtures thereof; and wherein moiety I is present in a concentration of approximately 40 to 70 mole percent, moiety III is present in a concentration of approximately 15 to 30 mole percent, and moiety IV is present in a concentration of approximately 15 to 30 mole percent, with the proviso that the molar concentrations of moieties III and IV are substantially equal.
Claim 25
Dependent Claim
168 words
I is ##STR23## III is at least one dioxy aryl moiety of the formula: --O--Ar'--O--, where Ar' is a divalent radical comprising at least one aromatic ring, and IV is at least one dicarboxy aryl moiety of the formula: ##STR24## wherein Ar" is a divalent radical comprising at least one aromatic ring, and wherein at least some of the hydrogen atoms present upon the aromatic ring of moieties III and IV optionally may be replaced by substitution 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, a phenyl group, and mixtures thereof; and wherein moiety I is present in a concentration of approximately 40 to 70 mole percent, moiety III is present in a concentration of approximately 15 to 30 mole percent, and moiety IV is present in a concentration of approximately 15 to 30 mole percent, with the proviso that the molar concentrations of moieties III and IV are substantially equal.
Claim 26
Dependent Claim
26 words
A melt processable wholly aromatic polyester according to claim 21 which is capable of forming an anisotropic melt phase at a temperature below approximately 320° C.
Claim 27
Dependent Claim
31 words
A melt processable wholly aromatic polyester according to claim 21 which is capable of exhibiting an anisotropic melt phase at a temperature within the range of approximately 270° to 320° C.
Claim 28
Dependent Claim
20 words
A melt processable wholly aromatic polyester according to claim 21 wherein moieties III and IV are free of ring substitution.
Claim 29
Dependent Claim
29 words
A melt processable wholly aromatic polyester according to claim 21 wherein said dioxy aryl moiety III is selected from the group consisting of: ##STR25## and mixtures of the foregoing.
Claim 30
Dependent Claim
29 words
A melt processable wholly aromatic polyester according to claim 21 wherein said dicarboxy aryl moiety IV is selected from the group consisting of: ##STR26## and mixtures of the foregoing.
Claim 31
Dependent Claim
35 words
A melt processable wholly aromatic polyester according to claim 21 which exhibits an inherent viscosity of at least 2.0 dl./gm. when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60° C.
Claim 32
Dependent Claim
35 words
A melt processable wholly aromatic polyester according to claim 21 which exhibits an inherent viscosity of at least 2.5 dl./gm. when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60° C.
Claim 33
Dependent Claim
42 words
A melt processable wholly aromatic polyester according to claim 21 which consists essentially of approximately 50 to 60 mole percent of moiety I, approximately 20 to 25 mole percent of moiety III, and approximately 20 to 25 mole percent of moiety IV.
Claim 34
Dependent Claim
15 words
A fiber which has been melt spun from the wholly aromatic polyester of claim 20.
Claim 35
Dependent Claim
15 words
A film which has been melt extruded from the wholly aromatic polyester of claim 20.
Claim 36
Dependent Claim
13 words
A molded article comprising the melt processable wholly aromatic polyester of claim 20.
Claim 37
Dependent Claim
28 words
A molding compound comprising the melt processable wholly aromatic polyester of claim 20 containing approximately 1 to 60 percent by weight of a solid filler and/or reinforcing agent.
Claim 38
Dependent Claim
28 words
A molding compound comprising the melt processable wholly aromatic polyester of claim 20 containing approximately 10 to 35 percent by weight of a solid filler and/or reinforcing agent.
Claim 39
Dependent Claim
145 words
A melt processable wholly aromatic polyester capable of forming an anisotropic melt phase at a temperature below approximately 350° C. consisting essentially of moieties I, III, and IV wherein: ##STR27## wherein at least some of the hydrogen atoms present upon the aromatic ring of moieties III and IV optionally may be replaced by substitution 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, a phenyl group, and mixtures thereof; and wherein moiety I is present in a concentration of approximately 40 to 70 mole percent, moiety III is present in a concentration of approximately 15 to 30 mole percent, and moiety IV is present in a concentration of approximately 15 to 30 mole percent, with the proviso that the molar concentrations of moieties III and IV are substantially equal.
Claim 40
Dependent Claim
145 words
A melt processable wholly aromatic polyester capable of forming an anisotropic melt phase at a temperature below approximately 350° C. consisting essentially of moieties I, III, and IV wherein: ##STR27## wherein at least some of the hydrogen atoms present upon the aromatic ring of moieties III and IV optionally may be replaced by substitution 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, a phenyl group, and mixtures thereof; and wherein moiety I is present in a concentration of approximately 40 to 70 mole percent, moiety III is present in a concentration of approximately 15 to 30 mole percent, and moiety IV is present in a concentration of approximately 15 to 30 mole percent, with the proviso that the molar concentrations of moieties III and IV are substantially equal.
Claim 41
Dependent Claim
26 words
A melt processable wholly aromatic polyester according to claim 35 which is capable of forming an anisotropic melt phase at a temperature below approximately 320° C.
Claim 42
Dependent Claim
31 words
A melt processable wholly aromatic polyester according to claim 35 which is capable of exhibiting an anisotropic melt phase at a temperature within the range of approximately 270° to 320° C.
Claim 43
Dependent Claim
20 words
A melt processable wholly aromatic polyester according to claim 35 wherein moieties III and IV are free of ring substitution.
Claim 44
Dependent Claim
35 words
A melt processable wholly aromatic polyester according to claim 35 which exhibits an inherent viscosity of at least 2.0 dl./gm. when dissolved in a concentration of 0.1 percent by weight of pentafluorophenol at 60° C.
Claim 45
Dependent Claim
35 words
A melt processable wholly aromatic polyester according to claim 35 which exhibits an inherent viscosity of at least 2.5 dl./gm. when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60° C.
Claim 46
Dependent Claim
42 words
A melt processable wholly aromatic polyester according to claim 35 which consists essentially of approximately 50 to 60 mole percent of moiety I, approximately 20 to 25 mole percent of moiety III, and approximately 20 to 25 mole percent of moiety IV.
Claim 47
Dependent Claim
15 words
A fiber which has been melt spun from the wholly aromatic polyester of claim 35.
Claim 48
Dependent Claim
15 words
A film which has been melt extruded from the wholly aromatic polyester of claim 35.
Claim 49
Dependent Claim
13 words
A molded article comprising the melt processable wholly aromatic polyester of claim 35.
Claim 50
Dependent Claim
28 words
A molding compound comprising the melt processable wholly aromatic polyester of claim 35 containing approximately 1 to 60 percent by weight of a solid filler and/or reinforcing agent.
Claim 51
Dependent Claim
28 words
A molding compound comprising the melt processable wholly aromatic polyester of claim 35 containing approximately 10 to 35 percent by weight of a solid filler and/or reinforcing agent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |