US3091600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear aromatic acid copolyesters modified with dimer glycols having 36 carbons
Assignee: Eastman Kodak Co
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Filing: 1961-01-05
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Granted: 1963-05-28
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Expires: 1981-01-05
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 Gilkey Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:42
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A LINEAR HIGHLY POLYMERIC SPINNABLE AND MOLDABLE COPOLYESTER HAVING A MELTING POINT OF AT LEAST 200* C, AND AN INHERENT VISCOSITY OF AT LEAST 0.4, SAID COPOLYESTER BEING ESSENTIALLY COMPOSED OF CONSITUENTS (A) AND (B) AS FOLLOWS: (A) NOT OVER 20 MOLE PERCENT OF AN ALIPHATIC DICARBOXYLIC ACID CONTAINING 4 TO 20 CARBON ATOMS AND AT LEAST 80 MOLE PERCENT OF AN ACIDIC MATERIAL CONSISTING OF AROMATIC DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC, 4,4''-ETHYLENE-DIOXYDIBENZOIC, 4,4''DIPHENIC AND THANS-CYCLOHEXANE-1,4-DICARBOXYLIC ACIDS, AND (B) A GLYCOL ESSENTIALLY COMPOSED OF 98-65 MOLE PERCENT OF A GLYCOL OF 2-12 CARBON ATOMS AND 2-35 MOLE PERCENT OF A DIMER GLYCOL, SAID DIMER GLYCOL CONTAINING 36 CARBON ATOMS AND BEING THE REDUCED DIMER OF AN UNSATURATED FATTY ACID SELECTED FROM THE GROUP CONSISTING OF LINOLEIC ACID AND LINOLENIC ACID.
Claim 2
Dependent Claim
134 words
A LINEAR HIGHLY POLYMERIC SPINNABLE AND MOLDABLE COPOLYESTER HAVING A MELTING POINT OF AT LEAST 200* C, AND AN INHERENT VISCOSITY OF AT LEAST 0.4, SAID COPOLYESTER BEING ESSENTIALLY COMPOSED OF CONSITUENTS (A) AND (B) AS FOLLOWS: (A) NOT OVER 20 MOLE PERCENT OF AN ALIPHATIC DICARBOXYLIC ACID CONTAINING 4 TO 20 CARBON ATOMS AND AT LEAST 80 MOLE PERCENT OF AN ACIDIC MATERIAL CONSISTING OF AROMATIC DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC, 4,4''-ETHYLENE-DIOXYDIBENZOIC, 4,4''DIPHENIC AND THANS-CYCLOHEXANE-1,4-DICARBOXYLIC ACIDS, AND (B) A GLYCOL ESSENTIALLY COMPOSED OF 98-65 MOLE PERCENT OF A GLYCOL OF 2-12 CARBON ATOMS AND 2-35 MOLE PERCENT OF A DIMER GLYCOL, SAID DIMER GLYCOL CONTAINING 36 CARBON ATOMS AND BEING THE REDUCED DIMER OF AN UNSATURATED FATTY ACID SELECTED FROM THE GROUP CONSISTING OF LINOLEIC ACID AND LINOLENIC ACID.
References Cited (Backward Citations)
US2347562A
Cited
US2901466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |