US4480086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation-resistant copolyesters
Assignee: Eastman Chemical Co
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Filing: 1983-09-09
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Granted: 1984-10-30
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Expires: 2003-09-09
Abstract
Abstract Disclosed are copolyester compositions derived from about 65-100 mole % 1,4-cyclohexanedicarboxylic acid, about 65-100 mole % 1,4-butanediol and about 15-35 mole % of a compound selected from the group consisting of dimer acid and dimer glycol. These copolyesters are resistant to gamma radiation.
Inventors
- 👤 George J. O'Neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:55
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
58 words
Copolyester compositions derived from 100 mole % of a dicarboxylic acid component and 100 mole % of a glycol component, said copolyester consisting essentially of repeat units from about 65-100 mole % 1,4-cyclohexanedicarboxylic acid, about 65-100 mole % 1,4-butanediol and about 15-35 mole % of a compound selected from the group consisting of dimer acid and dimer glycol.
Claim 2
Dependent Claim
58 words
Copolyester compositions derived from 100 mole % of a dicarboxylic acid component and 100 mole % of a glycol component, said copolyester consisting essentially of repeat units from about 65-100 mole % 1,4-cyclohexanedicarboxylic acid, about 65-100 mole % 1,4-butanediol and about 15-35 mole % of a compound selected from the group consisting of dimer acid and dimer glycol.
Claim 3
Dependent Claim
14 words
Copolyester compositions according to claim 1 comprising about 15-35 mole % of dimer acid.
Claim 4
Dependent Claim
14 words
Copolyester compositions according to claim 1 comprising about 15-35 mole % of dimer glycol.
Claim 5
Dependent Claim
16 words
Copolyester compositions according to claim 1 wherein said 1,4-dimethylcyclohexanedicarboxylic acid is at least 80% trans isomer.
Claim 6
Dependent Claim
11 words
A blow molded container comprising the copolyester composition of claim 1.
Claim 7
Dependent Claim
12 words
A flexible container of sheet material comprising the copolyester of claim 1.
Claim 8
Dependent Claim
9 words
Extruded tubing comprising the copolyester composition of claim 1.
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) | 1987-10-30 | 1988-04-30 | 1988-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-30 | 1992-04-30 | 1992-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-30 | 1996-04-30 | 1996-10-30 | $7700.00 | Window Closed / Lapsed |