US2946769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polymers containing regularly recurring ester and amide linkages
Assignee: Union Carbide Corp
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Filing: 1954-04-23
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Granted: 1960-07-26
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Expires: 1974-04-23
Abstract
No abstract record available.
Inventors
- 👤 Julian K Rose
- 👤 Helmut W Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:04
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/44; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6856
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A FIBER-FORMING, RESINOUS POLYESTER HAVING A REDUCED VISCOSITY OF AT LEAST 0.4 IN M-CRESOL, OF (1) AND ORGANIC DICARBOXYLIC ACID REPRESENTED BY THE STRUCTURAL FORMULA: HOOCRCOOH WHEREIN R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF DIVALENT HYDROCARBON RADICALS FREE FROM OLEFINIC AND ACETYLENIC UNSATURATION AND CONTAINING FROM 2 TO 12 CARBON ATOMS, DIVALENT HYDROCARBON ETHER RADICALS FREE FROM OLEFINIC AND ACETYLENIC UNSATURATION AND CONTAINING FROM 2 TO 12 CARBON ATOMS, AND DIVALENT HYDROCARBON THIOETHER RADICALS FREE FROM OLEFINIC AND ACETYLENIC UNSATURATION AND CONTAINING FROM 2 TO 12 CARBON ATOMS AND (2) AND N, N'' DI(OMEGA HYDROXY ALKYL) DIAMIDO-SUBSTITUTED HYDROCARBON COMPOUND WHEREIN THE OMEGA HYDROXY ALKYL AMIDO RADICALS OF SAID COMPOUND CONTAIN FROM 4 TO 6 CARBON ATOMS AND THE NITROGEN ATOMS OF SAID AMIDO RADICALS ARE LINKED TO EACH OTHER THROUGH A DIVALENT HYDROCARBON RADICAL FREE FROM OLEFINIC AND ACETYLENIC UNSATURATION AND CONTAINING FROM 2 TO 10 CHAIN CARBON ATOMS.
Claim 2
Dependent Claim
152 words
A FIBER-FORMING, RESINOUS POLYESTER HAVING A REDUCED VISCOSITY OF AT LEAST 0.4 IN M-CRESOL, OF (1) AND ORGANIC DICARBOXYLIC ACID REPRESENTED BY THE STRUCTURAL FORMULA: HOOCRCOOH WHEREIN R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF DIVALENT HYDROCARBON RADICALS FREE FROM OLEFINIC AND ACETYLENIC UNSATURATION AND CONTAINING FROM 2 TO 12 CARBON ATOMS, DIVALENT HYDROCARBON ETHER RADICALS FREE FROM OLEFINIC AND ACETYLENIC UNSATURATION AND CONTAINING FROM 2 TO 12 CARBON ATOMS, AND DIVALENT HYDROCARBON THIOETHER RADICALS FREE FROM OLEFINIC AND ACETYLENIC UNSATURATION AND CONTAINING FROM 2 TO 12 CARBON ATOMS AND (2) AND N, N'' DI(OMEGA HYDROXY ALKYL) DIAMIDO-SUBSTITUTED HYDROCARBON COMPOUND WHEREIN THE OMEGA HYDROXY ALKYL AMIDO RADICALS OF SAID COMPOUND CONTAIN FROM 4 TO 6 CARBON ATOMS AND THE NITROGEN ATOMS OF SAID AMIDO RADICALS ARE LINKED TO EACH OTHER THROUGH A DIVALENT HYDROCARBON RADICAL FREE FROM OLEFINIC AND ACETYLENIC UNSATURATION AND CONTAINING FROM 2 TO 10 CHAIN CARBON ATOMS.
References Cited (Backward Citations)
NL64261C
Cited
US2551731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |