US3261812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric polyesters of diacids, cyclohexanedimethanol and poly
Assignee: Eastman Kodak Co
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Filing: 1962-08-09
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Granted: 1966-07-19
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Expires: 1982-08-09
Abstract
No abstract record available.
Inventors
- 👤 Bell Alan
- 👤 Charles J Kibler
- 👤 James G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:55
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/80; C08G63/66; C08G63/668; C08G63/672; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886; C08G63/785; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A HIGHLY POLYMERIC LINEAR FIBER-FORMING ELASTOMERIC POLYESTER OF CONSTITUENTS CONSISTING ESSENTIALLY OF EQUIMOLAR PROPORTIONS OF A DICARBOXYLIC ACID CONSTITUENT (A) AND A MIXTURE OF GLYCOL CONSTITUENTS COMPOSED OF (B-1) AND (B-2), SAID LINEAR POLYESTER HAVING AN INHERENT VISCOSITY ABOVE 1.3 AS MEASURED IN A MIXTURE OF 60% PHENOL PLUS 40% TETRACHLOROETHANE AT 25*C., AND HAVING A CRYSTALLINE MELTING POINT GREATER THAN 150*C., AND WHEREIN SAID DICARBOXYLIC ACID AND GLYCOL CONSTITUENTS ARE AS FOLLOWS: (A) A DICARBOXYLIC ACID HAVING FROM 2 TO 40 CARBON ATOMS, AND COMPOSED OF FROM 80 TO 100 MOLE PERCENT OF A DICARBOXYLIC ACID IN WHICH THE CARBOXY RADICALS ARE DIRECTLY ATTACHED TO A HEXACARBOCYCLIC RING, (B-1) A GLYCOL SELECTED FROM THE GROUP CONSISTING OF THE CIS AND TRANS ISOMERS OF 1,4-CYCLOHEXANEDIMETHANOL, (B-2) A POLYTETRAMETHYLENE ETHER GLYCOL HAVING A MOLECTULAR STRUCTURE REPRESENTED BY THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
139 words
A HIGHLY POLYMERIC LINEAR FIBER-FORMING ELASTOMERIC POLYESTER OF CONSTITUENTS CONSISTING ESSENTIALLY OF EQUIMOLAR PROPORTIONS OF A DICARBOXYLIC ACID CONSTITUENT (A) AND A MIXTURE OF GLYCOL CONSTITUENTS COMPOSED OF (B-1) AND (B-2), SAID LINEAR POLYESTER HAVING AN INHERENT VISCOSITY ABOVE 1.3 AS MEASURED IN A MIXTURE OF 60% PHENOL PLUS 40% TETRACHLOROETHANE AT 25*C., AND HAVING A CRYSTALLINE MELTING POINT GREATER THAN 150*C., AND WHEREIN SAID DICARBOXYLIC ACID AND GLYCOL CONSTITUENTS ARE AS FOLLOWS: (A) A DICARBOXYLIC ACID HAVING FROM 2 TO 40 CARBON ATOMS, AND COMPOSED OF FROM 80 TO 100 MOLE PERCENT OF A DICARBOXYLIC ACID IN WHICH THE CARBOXY RADICALS ARE DIRECTLY ATTACHED TO A HEXACARBOCYCLIC RING, (B-1) A GLYCOL SELECTED FROM THE GROUP CONSISTING OF THE CIS AND TRANS ISOMERS OF 1,4-CYCLOHEXANEDIMETHANOL, (B-2) A POLYTETRAMETHYLENE ETHER GLYCOL HAVING A MOLECTULAR STRUCTURE REPRESENTED BY THE FOLLOWING FORMULA:
References Cited (Backward Citations)
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US2865891A
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US2901466A
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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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |