US4866155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polester of bis(2-(hydroxyphenyl)-hexafluoroisopropyl)diphenyl ether
Assignee: Hoechst Celanese Chemical Co
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Filing: 1987-11-24
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Granted: 1989-09-12
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Expires: 2007-11-24
Abstract
Abstract Polyesters of 4,4'bis[2-(4-hydroxyphenyl)hexafluoroisopropyl]diphenyl ether having high transparency, high solvent solubility and excellent melt processability are prepared. They possess high thermal and radiation stability and are useful in the preparation of protective films, protective paints, films, fibers, diffusion membranes and shaped articles where high service temperature and radiation resistance are desired.
Inventors
- 👤 Werner H. Mueller
- 👤 Dinesh N. Khanna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:14
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/40; B; B01; B01D; B01D71/00; B01D71/06; B01D71/48; C08G63/68; C08G63/682; C08G63/6824; C08G63/6826; G02B1/105; G; G02; G02B; G02B1/00; G02B1/10; G02B1/14; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
69 words
A linear thermoplastic polyester comprising a recurring unit in the polymer chain which is represented by the structure: ##STR6## wherein: R is a divalent moiety of the formula: ##STR7## Z is a substituent selected from halogen or lower alkyl of 1 to 6 carbons or phenyl; n is an integer independently selected from 0 to 4 and R' represents an alkylene, alicylic or arylene divalent moiety or mixtures thereof.
Claim 2
Dependent Claim
69 words
A linear thermoplastic polyester comprising a recurring unit in the polymer chain which is represented by the structure: ##STR6## wherein: R is a divalent moiety of the formula: ##STR7## Z is a substituent selected from halogen or lower alkyl of 1 to 6 carbons or phenyl; n is an integer independently selected from 0 to 4 and R' represents an alkylene, alicylic or arylene divalent moiety or mixtures thereof.
Claim 3
Dependent Claim
13 words
A polyester according to claim 1 wherein the divalent moiety R is: ##STR8##
Claim 4
Dependent Claim
25 words
A polyester according to claim 1 wherein R' is selected from the residuum of: isophthaloyl chloride; terephthaloyl chloride; 2,2-bis(4-chlorocarbonylphenyl)hexafluoropropane; 1,1-bis(4-carboxyphenyl)-1-phenyl-2,2,2-trifluoroethane; 4,4'-bis[2-(4-chlorocarbonylphenyl)hexafluoroisopropyl]diphenyl ether; or mixtures thereof.
Claim 5
Dependent Claim
12 words
A filament comprising a polyester according to claim 1, 2 or 3.
Claim 6
Dependent Claim
13 words
A self-supporting film comprising a polyester according to claim 1, 2 or 3.
Claim 7
Dependent Claim
12 words
A fiber comprising a polyester according to claim 1, 2 or 3.
Claim 8
Dependent Claim
10 words
A fabric comprising a polyester fiber according to claim 6.
Claim 9
Dependent Claim
13 words
A molded article comprising a polyester according to claim 1, 2 or 3.
Claim 10
Dependent Claim
13 words
A extruded profile comprising a polyester according to claim 1, 2, or 3.
Claim 11
Dependent Claim
14 words
A protective film coating comprising a polyester according to claim 1, 2 or 3.
Claim 12
Dependent Claim
14 words
A pigmented paint composition comprising a polyester according to claim 1, 2 or 3.
Claim 13
Dependent Claim
13 words
An optical fiber comprising a polyester according to claim 1, 2 or 3.
Claim 14
Dependent Claim
15 words
A polyester according to claim 2 wherein R is the polyester condensation residuum of 4,4'-bis[2-(4-hydroxyphenyl)hexafluoroisopropyl]diphenylether.
Claim 15
Dependent Claim
23 words
A polyester according to claim 13 wherein R 1 is the polyester condensation residuum of a mixture of isophthaloyl chloride and terephthaloyl chloride
Claim 16
Dependent Claim
17 words
A polyester according to claim 13 wherein R 1 is the polyester condensation residuum of isophthaloyl chloride.
Claim 17
Dependent Claim
17 words
A polyester according to claim 13 wherein R 1 is the polyester condensation residuum of terephthaloyl chloride.
Claim 18
Dependent Claim
17 words
A polyester according to claim 13 wherein R 1 is the polester condensation residuum of 2,2-hexafluoro-bis(4-chlorocarbonyl)phenyl propane.
Claim 19
Dependent Claim
17 words
A polyester according to claim 15 wherein R 1 is the polyester condensation residuum of 4,4'bis[2-(4-chlorocarbonylphenyl)hexafluoroisopropyl]-diphenyl ether.
Claim 20
Dependent Claim
12 words
A solution comprising the polyester of claim 2 dissolved in organic solvent.
Claim 21
Dependent Claim
12 words
A laminate comprising a polyester according to claim 1, 2 or 3.
Claim 22
Dependent Claim
12 words
A membrane comprising a polyester according to claim 1, 2 or 3.
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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) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |