US4529565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester of substituted or unsubstituted phenoxyhydroquinone
Assignee: Asahi Kasei Corp
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Filing: 1984-08-28
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Granted: 1985-07-16
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Expires: 2004-08-28
Abstract
Abstract A polyester having a melt anisotropy, which consists essentially of structural units represented by the following formulae is described. ##STR1## wherein X is hydrogen, chlorine, methyl, ethyl, propyl, butyl, methoxy, ethoxy, nitro or cyano, Ar is selected from 1,4-phenylene, chloro-1,4-phenylene, methyl-1,4-phenylene, 4,4'-biphenylene, 3,5,3',5'-tetramethyl-4,4'-biphenylene, 1,4-naphthalene, 1,5-naphthalene, 2,6-naphthalene, dimethyl-1,4-phenylene, trimethyl-1,4-phenylene and oxy-4,4'-diphenylene, and k, l, m and n represent molar fractions of the corresponding units and they satisfy the following requirements: ##EQU1## and k+l≈m (3) The polyester is shaped into articles such as fiber and film. The shaped article is prepared by melt shaping the polyester to form a shaped article and then heating the shaped article at a temperature in the range of from a temperature lower by 50° C. than the softening point to the softening point.
Inventors
- 👤 Hideo Kasatani
- 👤 Takashi Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:27
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/60; C08G63/605; C08G63/12; C08G63/16; C08G63/18; C08G63/19
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
98 words
A polyester having a melt anisotropy, which consists essentially of structural units represented by the following general formulae: ##STR4## wherein X stands for a hydrogen atom, a chlorine atom, a methyl group, an ethyl group, a propyl group, a butyl group, a methoxy group, an ethoxy group, a nitro group or a cyano group, Ar stands for a divalent group selected from 1,4-phenylene, chloro-1,4-phenylene, methyl-1,4-phenylene, 4,4'-biphenylene, 3,5,3',5'-tetramethyl-4,4'-biphenylene, 1,4-naphthalene, 1,5-naphthalene, 2,6-naphthalene, dimethyl-1,4-phenylene, trimethyl-1,4-phenylene and oxy-4,4'-diphenylene groups, and k, l, m and n represent molar fractions of the corresponding units and they satisfy the following requirements: ##EQU3## and K+l≈m (3)
Claim 2
Dependent Claim
98 words
A polyester having a melt anisotropy, which consists essentially of structural units represented by the following general formulae: ##STR4## wherein X stands for a hydrogen atom, a chlorine atom, a methyl group, an ethyl group, a propyl group, a butyl group, a methoxy group, an ethoxy group, a nitro group or a cyano group, Ar stands for a divalent group selected from 1,4-phenylene, chloro-1,4-phenylene, methyl-1,4-phenylene, 4,4'-biphenylene, 3,5,3',5'-tetramethyl-4,4'-biphenylene, 1,4-naphthalene, 1,5-naphthalene, 2,6-naphthalene, dimethyl-1,4-phenylene, trimethyl-1,4-phenylene and oxy-4,4'-diphenylene groups, and k, l, m and n represent molar fractions of the corresponding units and they satisfy the following requirements: ##EQU3## and K+l≈m (3)
Claim 3
Dependent Claim
14 words
A polyester as set forth in claim 1, wherein X is a hydrogen atom.
Claim 4
Dependent Claim
26 words
A polyester as set forth in claim 2, wherein Ar is a divalent group selected from the group consisting of 1,4-phenylene, chloro-1,4-phenylene, methyl-1,4-phenylene and 4,4'-biphenylene groups.
Claim 5
Dependent Claim
20 words
A polyester as set forth in claim 2, wherein molar fraction of the corresponding units satisfy the following requirements: ##STR5##
Claim 6
Dependent Claim
140 words
A shaped article comprising a wholly aromatic polyester which consists essentially of structural units represented by the following general formulae: ##STR6## wherein X stands for a hydrogen atom, a chlorine atom, a methyl group, an ethyl group, a propyl group, a butyl group, a methoxy group, an ethoxy group, a nitro group or a cyano group, Ar stands for a divalent group selected from 1,4-phenylene, chloro-1,4-phenylene, methyl-1,14-phenylene, 4,4'-biphenylene, 3,5,3'5'-tetramethyl-4,4'-biphenylene, 1,4-naphthalene, 1,5-naphthalene, 2,6-naphthalene, dimethyl-1,4-phenylene trimethyl-1,4-phenylene and oxy-4,4'-diphenylene groups, and k, l, m and n represent molar fractions of the corresponding units and they satisfy the following requirements: ##EQU4## and k+l≈m (3), said wholly aromatic polyester having an inherent viscosity of at least 1.0 as measured at 35° C. using 0.5 gram of polyester per 100 ml of a solvent composed of p-chlorophenol, phenol and tetrachloroethane at a weight ratio of 40/25/35.
Claim 7
Dependent Claim
140 words
A shaped article comprising a wholly aromatic polyester which consists essentially of structural units represented by the following general formulae: ##STR6## wherein X stands for a hydrogen atom, a chlorine atom, a methyl group, an ethyl group, a propyl group, a butyl group, a methoxy group, an ethoxy group, a nitro group or a cyano group, Ar stands for a divalent group selected from 1,4-phenylene, chloro-1,4-phenylene, methyl-1,14-phenylene, 4,4'-biphenylene, 3,5,3'5'-tetramethyl-4,4'-biphenylene, 1,4-naphthalene, 1,5-naphthalene, 2,6-naphthalene, dimethyl-1,4-phenylene trimethyl-1,4-phenylene and oxy-4,4'-diphenylene groups, and k, l, m and n represent molar fractions of the corresponding units and they satisfy the following requirements: ##EQU4## and k+l≈m (3), said wholly aromatic polyester having an inherent viscosity of at least 1.0 as measured at 35° C. using 0.5 gram of polyester per 100 ml of a solvent composed of p-chlorophenol, phenol and tetrachloroethane at a weight ratio of 40/25/35.
Claim 8
Dependent Claim
15 words
A shaped article as set forth in claim 5, wherein X is a hydrogen atom.
Claim 9
Dependent Claim
27 words
A shaped article as set forth in claim 6, wherein Ar is a divalent group selected from the group consisting of 1,4-phenylene, chloro-1,4-phenylene, methyl-1,4-phenylene and 4,4'-biphenylene groups.
Claim 10
Dependent Claim
21 words
A shaped article as set forth in claim 6, wherein molar fraction of the corresponding units satisfy the following requirements: ##STR7##
Claim 11
Dependent Claim
15 words
A shaped article as set forth in claim 5, wherein the shaped article is fiber.
Claim 12
Dependent Claim
15 words
A shaped article as set forth in claim 5, wherein the shaped article is film.
Claim 13
Dependent Claim
145 words
A process for the preparation of a wholly aromatic polyester shaped article, which comprises the steps of: melt shaping a polyester consisting essentially of structural units represented by the following general formulae: ##STR8## wherein X stands for a hydrogen atom, a chlorine atom, a methyl group, an ethyl group, a propyl group, a butyl group, a methoxy group, an ethoxy group, a nitro group or a cyano group, Ar stands fro a divalent group selected from 1,4-phenylene, chloro-1,4-phenylene, methyl-1,4-phenylene, 4,4'-biphenylene, 3,5,3',5'-tetramethyl-4,4'-biphenylene, 1,4-naphthalene, 1,5-naphthalene, 2,6-naphthalene, dimethyl-1,4-phenylene, trimethyl-1,4-phenylene and oxy-4,4'-diphenylene groups, and k, l, m and n represent molar fractions of the corresponding units and they satisfy the following requirements: ##EQU5## and k+l≈m (3) to form a shaped article, and the heating the shaped article at a temperature in the range of from a temperature lower by 50° C. than the softening point to the softening point.
Claim 14
Dependent Claim
145 words
A process for the preparation of a wholly aromatic polyester shaped article, which comprises the steps of: melt shaping a polyester consisting essentially of structural units represented by the following general formulae: ##STR8## wherein X stands for a hydrogen atom, a chlorine atom, a methyl group, an ethyl group, a propyl group, a butyl group, a methoxy group, an ethoxy group, a nitro group or a cyano group, Ar stands fro a divalent group selected from 1,4-phenylene, chloro-1,4-phenylene, methyl-1,4-phenylene, 4,4'-biphenylene, 3,5,3',5'-tetramethyl-4,4'-biphenylene, 1,4-naphthalene, 1,5-naphthalene, 2,6-naphthalene, dimethyl-1,4-phenylene, trimethyl-1,4-phenylene and oxy-4,4'-diphenylene groups, and k, l, m and n represent molar fractions of the corresponding units and they satisfy the following requirements: ##EQU5## and k+l≈m (3) to form a shaped article, and the heating the shaped article at a temperature in the range of from a temperature lower by 50° C. than the softening point to the softening point.
Claim 15
Dependent Claim
16 words
A process as set forth in claim 11, wherein the shaped article is fiber or film.
Claim 16
Dependent Claim
14 words
A process as set forth in claim 11, wherein X is a hydrogen atom.
Claim 17
Dependent Claim
26 words
A process as set forth in claim 13, wherein Ar is a divalent group selected from the group consisting of 1,4-phenylene, chloro-1,4-phenylene, methyl-1,4-phenylene and 4,4'-biphenylene groups.
Claim 18
Dependent Claim
20 words
A process as set forth in claim 13, wherein molar fraction of the corresponding units satisfy the following requirements: ##STR9##
Claim 19
Dependent Claim
36 words
A process as set forth in claim 11, wherein the polymer constituting the shaped article has an inherent viscosity of not higher than 5.0 before the heat treatment and greater than 7.0 after the heat treatment.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |