US4276397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blend of polyarylene sulfide and wholly aromatic polyester
Assignee: Celanese Corp
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Filing: 1980-07-07
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Granted: 1981-06-30
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Expires: 2000-07-07
Abstract
Abstract A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form molded articles having satisfactory mechanical properties is provided. The polymer blend comprises approximately 5 to approximately 95 percent by weight, based upon the total weight of the blend, of a polyarylene sulfide and approximately 5 to approximately 95 percent by weight, based upon the total weight of the blend, of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend. Blend compositions containing high concentrations of wholly aromatic polyester (i.e., at least 60 percent by weight wholly aromatic polyester) can be used to form fibers and films.
Inventors
- 👤 Michael F. Froix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:17
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08L81/00; C08L81/02
Claims Analysis
Total Claims: 64
Claim 1
Independent Claim
90 words
A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form molded articles having satisfactory mechanical properties comprising: (a) approximately 5 to approximately 95 percent by weight, based upon the total weight of components (a) and (b), of a polyarylene sulfide, and (b) approximately 5 to approximately 95 percent by weight, based upon the total weight of components (a) and (b), of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from said blend.
Claim 2
Dependent Claim
90 words
A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form molded articles having satisfactory mechanical properties comprising: (a) approximately 5 to approximately 95 percent by weight, based upon the total weight of components (a) and (b), of a polyarylene sulfide, and (b) approximately 5 to approximately 95 percent by weight, based upon the total weight of components (a) and (b), of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from said blend.
Claim 3
Dependent Claim
27 words
A polymer blend according to claim 1 which is capable of undergoing melt processing at a temperature within the range of approximately 260° C. to 350° C.
Claim 4
Dependent Claim
27 words
A polymer blend according to claim 1 which is capable of undergoing melt processing at a temperature within the range of approximately 280° C. to 300° C.
Claim 5
Dependent Claim
14 words
A polymer blend according to claim 1 wherein said polyarylene sulfide is polyphenylene sulfide.
Claim 6
Dependent Claim
31 words
A polymer blend according to claim 1 wherein said wholly aromatic polyester apart from said blend is capable of forming an anisotropic melt phase at a temperature below approximately 350° C.
Claim 7
Dependent Claim
40 words
A polymer blend according to claim 1 wherein said wholly aromatic polyester apart from said blend exhibits an inherent viscosity of at least 2.0 dl./g. when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60° C.
Claim 8
Dependent Claim
112 words
A polymer blend according to claim 1 wherein said melt processable wholly aromatic polyester is capable of forming an anisotropic melt phase at a temperature no higher than approximately 320° C. apart from said blend and consists essentially of the recurring moieties I, II, III, and IV wherein: ##STR4## where R is methyl, chloro, bromo, or mixtures thereof, and is substituted for a hydrogen atom present upon the aromatic ring, and wherein said polyester comprises approximately 20 to 60 mole percent of moiety I, approximately 5 to 18 mole percent of moiety II, approximately 5 to 35 mole percent of moiety III, and approximately 20 to 40 mole percent of moiety IV.
Claim 9
Dependent Claim
18 words
A polymer blend according to claim 7 wherein said R group of moiety IV is a methyl group.
Claim 10
Dependent Claim
59 words
A polymer blend according to claim 1 wherein said melt processable wholly aromatic polyester is capable of forming an anisotropic melt phase at a temperature below approximately 325° C. apart from said blend and consists essentially of the recurring moieties I, II, and III wherein: ##STR5## wherein said polyester comprises approximately 30 to 70 mole percent of moiety I.
Claim 11
Dependent Claim
47 words
A molding compound comprising the polymer blend of claim 1 which incorporates approximately 1 to approximately 50 percent by weight, based upon the total weight of said molding compound, of a component selected from the group consisting of a solid filler, a reinforcing agent and mixtures thereof.
Claim 12
Dependent Claim
43 words
A molding compound according to claim 10 which incorporates approximately 10 to approximately 30 percent by weight, based upon the total weight of said molding compound, of a component selected from the group consisting of a solid filler, reinforcing agent and mixture thereof.
Claim 13
Dependent Claim
10 words
A molded article comprising the polymer blend of claim 1.
Claim 14
Dependent Claim
24 words
A polymer blend according to claim 1 which is capable of being satisfactorily molded while employing a mold temperature less than approximately 100° C.
Claim 15
Dependent Claim
90 words
A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form molded articles having satisfactory mechanical properties comprising: (a) approximately 5 to approximately 75 percent by weight, based upon the total weight of components (a) and (b), of a polyarylene sulfide, and (b) approximately 25 to approximately 95 percent by weight, based upon the total weight of components (a) and (b), of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from said blend.
Claim 16
Dependent Claim
90 words
A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form molded articles having satisfactory mechanical properties comprising: (a) approximately 5 to approximately 75 percent by weight, based upon the total weight of components (a) and (b), of a polyarylene sulfide, and (b) approximately 25 to approximately 95 percent by weight, based upon the total weight of components (a) and (b), of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from said blend.
Claim 17
Dependent Claim
27 words
A polymer blend according to claim 14 which is capable of undergoing melt processing at a temperature within the range of approximately 260° C. to 350° C.
Claim 18
Dependent Claim
27 words
A polymer blend according to claim 14 which is capable of undergoing melt processing at a temperature within the range of approximately 280° C. to 300° C.
Claim 19
Dependent Claim
14 words
A polymer blend according to claim 14 wherein said polyarylene sulfide is polyphenylene sulfide.
Claim 20
Dependent Claim
31 words
A polymer blend according to claim 14 wherein said wholly aromatic polyester apart from said blend is capable of forming an anisotropic melt phase at a temperature below approximately 350° C.
Claim 21
Dependent Claim
40 words
A polymer blend according to claim 14 wherein said wholly aromatic polyester apart from said blend exhibits an inherent viscosity of at least 2.0 dl./g. when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60° C.
Claim 22
Dependent Claim
112 words
A polymer blend according to claim 14 wherein said melt processable wholly aromatic polyester is capable of forming an anisotropic melt phase at a temperature no higher than approximately 320° C. apart from said blend and consists essentially of the recurring moieties I, II, III, and IV wherein: ##STR6## where R is methyl, chloro, bromo, or mixtures thereof, and is substituted for a hydrogen atom present upon the aromatic ring, and wherein said polyester comprises approximately 20 to 60 mole percent of moiety I, approximately 5 to 18 mole percent of moiety II, approximately 5 to 35 mole percent of moiety III, and approximately 20 to 40 mole percent of moiety IV.
Claim 23
Dependent Claim
18 words
A polymer blend according to claim 20 wherein said R group of moiety IV is a methyl group.
Claim 24
Dependent Claim
59 words
A polymer blend according to claim 14 wherein said melt processable wholly aromatic polyester is capable of forming an anisotropic melt phase at a temperature below approximately 325° C. apart from said blend and consists essentially of the recurring moieties I, II, and III wherein: ##STR7## wherein said polyester comprises approximately 30 to 70 mole percent of moiety I.
Claim 25
Dependent Claim
46 words
A molding compound comprising the polymer blend of claim 14 which incorporates approximately 1 to approximately 50 percent by weight, based upon the total weight of said molding compound, of a component selected from the group consisting of a solid filler, reinforcing agent and mixtures thereof.
Claim 26
Dependent Claim
43 words
A molding compound according to claim 23 which incorporates approximately 10 to approximately 30 percent by weight, based upon the total weight of said molding compound, of a component selected from the group consisting of a solid filler, reinforcing agent and mixtures thereof.
Claim 27
Dependent Claim
10 words
A molded article comprising the polymer blend of claim 14.
Claim 28
Dependent Claim
24 words
A polymer blend according to claim 14 which is capable of being satisfactorily molded while employing a mold temperature less than approximately 100° C.
Claim 29
Dependent Claim
85 words
A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form shaped articles having satisfactory mechanical properties comprising: (a) approximately 5 to approximately 40 percent by weight, based upon the total weight of components (a) and (b), of a polyarylene sulfide, and (b) approximately 60 to approximately 95 percent by weight of components (a) and (b), of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from said blend.
Claim 30
Dependent Claim
85 words
A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form shaped articles having satisfactory mechanical properties comprising: (a) approximately 5 to approximately 40 percent by weight, based upon the total weight of components (a) and (b), of a polyarylene sulfide, and (b) approximately 60 to approximately 95 percent by weight of components (a) and (b), of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from said blend.
Claim 31
Dependent Claim
27 words
A polymer blend according to claim 27 which is capable of undergoing melt processing at a temperature within the range of approximately 260° C. to 350° C.
Claim 32
Dependent Claim
27 words
A polymer blend according to claim 27 which is capable of undergoing melt processing at a temperature within the range of approximately 280° C. to 300° C.
Claim 33
Dependent Claim
14 words
A polymer blend according to claim 27 wherein said polyarylene sulfide is polyphenylene sulfide.
Claim 34
Dependent Claim
31 words
A polymer blend according to claim 27 wherein said wholly aromatic polyester apart from said blend is capable of forming an anisotropic melt phase at a temperature below approximately 350° C.
Claim 35
Dependent Claim
40 words
A polymer blend according to claim 27 wherein said wholly aromatic polyester apart from said blend exhibits an inherent viscosity of at least 2.0 dl./g. when dissolved in a concentration of 0.1 percent by weight in pentafluorophenol at 60° C.
Claim 36
Dependent Claim
112 words
A polymer blend according to claim 27 wherein said melt processable wholly aromatic polyester is capable of forming an anisotropic melt phase at a temperature no higher than approximately 320° C. apart from said blend and consists essentially of the recurring moieties I, II, III, and IV wherein: ##STR8## where R is methyl, chloro, bromo, or mixtures thereof, and is substituted for a hydrogen atom present upon the aromatic ring, and wherein said polyester comprises approximately 20 to 60 mole percent of moiety I, approximately 5 to 18 mole percent of moiety II, approximately 5 to 35 mole percent of moiety III, and approximately 20 to 40 mole percent of moiety IV.
Claim 37
Dependent Claim
18 words
A polymer blend according to claim 33 wherein said R group of moiety IV is a methyl group.
Claim 38
Dependent Claim
59 words
A polymer blend according to claim 27 wherein said melt processable wholly aromatic polyester is capable of forming an anisotropic melt phase at a temperature below approximately 325° C. apart from said blend and consists essentially of the recurring moieties I, II, and III wherein: ##STR9## wherein said polyester comprises approximately 30 to 70 mole percent of moiety I.
Claim 39
Dependent Claim
46 words
A molding compound comprising the polymer blend of claim 27 which incorporates approximately 1 to approximately 50 percent by weight, based upon the total weight of said molding compound, of a component selected from the group consisting of a solid filler, reinforcing agent and mixtures thereof.
Claim 40
Dependent Claim
43 words
A molding compound according to claim 36 which incorporates approximately 10 to approximately 30 percent by weight, based upon the total weight of said molding compound, of a component selected from the group consisting of a solid filler, reinforcing agent and mixtures thereof.
Claim 41
Dependent Claim
10 words
A molded article comprising the polymer blend of claim 27.
Claim 42
Dependent Claim
14 words
A fiber which has been melt spun from the polymer blend of claim 27.
Claim 43
Dependent Claim
14 words
A film which has been melt extruded from the polymer blend of claim 27.
Claim 44
Dependent Claim
24 words
A polymer blend according to claim 27 which is capable of being satisfactorily molded while employing a mold temperature less than approximately 100° C.
Claim 45
Dependent Claim
153 words
A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form molded articles having satisfactory mechanical properties comprising: (a) approximately 5 to approximately 75 percent by weight, based upon the total weight of components (a) and (b), of polyphenylene sulfide, and (b) approximately 25 to approximately 95 percent by weight, based upon the total weight of components (a) and (b), of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase at a temperature no higher than approximately 320° C. apart from said blend and consists essentially of the recurring moieties I, II, III, and IV wherein: ##STR10## wherein said polyester comprises approximately 20 to 60 mole percent of moiety I, approximately 5 to 18 mole percent of moiety II, approximately 5 to 35 mole percent of moiety III, and approximately 20 to 40 mole percent of moiety IV.
Claim 46
Dependent Claim
153 words
A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form molded articles having satisfactory mechanical properties comprising: (a) approximately 5 to approximately 75 percent by weight, based upon the total weight of components (a) and (b), of polyphenylene sulfide, and (b) approximately 25 to approximately 95 percent by weight, based upon the total weight of components (a) and (b), of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase at a temperature no higher than approximately 320° C. apart from said blend and consists essentially of the recurring moieties I, II, III, and IV wherein: ##STR10## wherein said polyester comprises approximately 20 to 60 mole percent of moiety I, approximately 5 to 18 mole percent of moiety II, approximately 5 to 35 mole percent of moiety III, and approximately 20 to 40 mole percent of moiety IV.
Claim 47
Dependent Claim
75 words
A polymer blend according to claim 42 wherein said melt processable wholly aromatic polyester consists essentially of approximately 35 to 45 mole percent of moiety I, approximately 10 to 15 mole percent of moiety II, approximately 15 to 25 mole percent of moiety III, and approximately 25 to 35 mole percent of moiety IV, with the proviso that the total molar concentration of moieties II and III is substantially identical to that of moiety IV.
Claim 48
Dependent Claim
27 words
A polymer blend according to claim 42 which is capable of undergoing melt processing at a temperature within the range of approximately 280° C. to 300° C.
Claim 49
Dependent Claim
39 words
A polymer blend according to claim 42 wherein said wholly aromatic polyester apart from said blend exhibits an inherent viscosity of at least 2.0 dl./g. when dissolved in a concentration of 0.3 weight/volume percent in pentafluorophenol at 60° C.
Claim 50
Dependent Claim
40 words
A polymer blend according to claim 42 wherein said wholly aromatic polyester apart from said blend exhibits an inherent viscosity of approximately 2.0 to 8.0 dl./g. when dissolved in a concentration of 0.3 weight/volume percent in pentafluorophenol at 60° C.
Claim 51
Dependent Claim
46 words
A molding compound comprising the polymer blend of claim 42 which incorporates approximately 1 to approximately 50 percent by weight, based upon the total weight of said molding compound, of a component selected from the group consisting of a solid filler, reinforcing agent and mixtures thereof.
Claim 52
Dependent Claim
43 words
A molding compound according to claim 47 which incorporates approximately 10 to approximately 30 percent by weight, based upon the total weight of said molding compound, of a component selected from the group consisting of a solid filler, reinforcing agent and mixtures thereof.
Claim 53
Dependent Claim
10 words
A molded article comprising the polymer blend of claim 42.
Claim 54
Dependent Claim
153 words
A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form shaped articles having satisfactory mechanical properties comprising: (a) approximately 5 to approximately 40 percent by weight, based upon the total weight of components (a) and (b), of polyphenylene sulfide, and (b) approximately 60 to approximately 95 percent by weight, based upon the total weight of components (a) and (b), of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase at a temperature no higher than approximately 320° C. apart from said blend and consists essentially of the recurring moieties I, II, III, and IV wherein: ##STR11## wherein said polyester comprises approximately 20 to 60 mole percent of moiety I, approximately 5 to 18 mole percent of moiety II, approximately 5 to 35 mole percent of moiety III, and approximately 20 to 40 mole percent of moiety IV.
Claim 55
Dependent Claim
153 words
A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form shaped articles having satisfactory mechanical properties comprising: (a) approximately 5 to approximately 40 percent by weight, based upon the total weight of components (a) and (b), of polyphenylene sulfide, and (b) approximately 60 to approximately 95 percent by weight, based upon the total weight of components (a) and (b), of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase at a temperature no higher than approximately 320° C. apart from said blend and consists essentially of the recurring moieties I, II, III, and IV wherein: ##STR11## wherein said polyester comprises approximately 20 to 60 mole percent of moiety I, approximately 5 to 18 mole percent of moiety II, approximately 5 to 35 mole percent of moiety III, and approximately 20 to 40 mole percent of moiety IV.
Claim 56
Dependent Claim
75 words
A polymer blend according to claim 50 wherein said melt processable wholly aromatic polyester consists essentially of approximately 35 to 45 mole percent of moiety I, approximately 10 to 15 mole percent of miety II, approximately 15 to 25 mole percent of moiety III, and approximately 25 to 35 mole percent of moiety IV, with the proviso that the total molar concentration of moieties II and III is substantially identical to that of moiety IV.
Claim 57
Dependent Claim
27 words
A polymer blend according to claim 50 which is capable of undergoing melt processing at a temperature within the range of approximately 280° C. to 300° C.
Claim 58
Dependent Claim
40 words
A polymer blend according to claim 50 wherein said wholly aromatic polyester apart from said blend exhibits an inherent viscosity of approximately 2.0 to 8.0 dl./g. when dissolved in a concentration of 0.3 weight/volume percent in pentafluorophenol at 60° C.
Claim 59
Dependent Claim
46 words
A molding compound comprising the polymer blend of claim 50 which incorporates approximately 1 to approximately 50 percent by weight, based upon the total weight of said molding compound, of a component selected from the group consisting of a solid filler, reinforcing agent and mixtures thereof.
Claim 60
Dependent Claim
43 words
A molding compound according to claim 54 which incorporates approximately 10 to approximately 30 percent by weight, based upon the total weight of said molding compound, of a component selected from the group consisting of a solid filler, reinforcing agent and mixtures thereof.
Claim 61
Dependent Claim
10 words
A molded article comprising the polymer blend of claim 50.
Claim 62
Dependent Claim
20 words
A molded article according to claim 56 which exhibits tensile and flexural strengths of no less than approximately 19,000 p.s.i.
Claim 63
Dependent Claim
14 words
A fiber which has been melt spun from the polymer blend of claim 50.
Claim 64
Dependent Claim
14 words
A film which has been melt extruded from the polymer blend of claim 50.
References Cited (Backward Citations)
GB2008598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-06-29 | 1984-12-29 | 1985-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-29 | 1988-12-29 | 1989-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-29 | 1992-12-29 | 1993-06-30 | $7700.00 | Window Closed / Lapsed |