Patent US2901466A successfully refreshed from Google Patents.
US2901466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear polyesters and polyester-amides from 1,4-cyclohexanedimethanol
Assignee: Eastman Kodak Co
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Filing: 1955-12-22
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Granted: 1959-08-25
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Expires: 1975-12-22
Abstract
No abstract record available.
Inventors
- 👤 Charles J Kibler
- 👤 James G Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:55
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/80; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/199; C08G63/60; C08G63/68; C08G63/688; C08G63/6884; C08G63/6888; C08G64/00; C08G64/02; C08G64/0208; C08G69/00; C08G69/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A HIGHLY POLYMERIC CONDENSATION POLYMER OF (A) AT LEASR ONE DIBASIC CARBOXYLIC ACID AND (B) AT LEAST ONE BIFUNCTIONAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIHYDROXY COMPOUNDS AND ALIPHATIC DIAMINES, THE RELATIVE PROPORTIONS OF (A) AND (B) CONSTITUENTS BEING SUCH AS TO CONSTITUTE A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYESTERS AND POLYESTERAMIDES IN WHICH AT LEAST 50 MOLE PERCENT OF SAID BIFUNCTIONAL COMPOUND B CONSISTS OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF THE CIS AND TRANS ISOMERS OF 1,4-CYCLOHEXANEDIMETHANOL, WHICH POLYMER MELTS AT ABOVE 100* C, AND BELOW ABOUT 330* C, HAS AN INHERENT VISCOSITY OF AT LEAST 0.4 AS MEASURED IN A MIXTURE OF 40% TETRACHLOROETHANE PLUS 60% PHENOL AND IS CAPABLE OF BEING FORMED INTO FIBERS.
Claim 2
Dependent Claim
125 words
A HIGHLY POLYMERIC CONDENSATION POLYMER OF (A) AT LEASR ONE DIBASIC CARBOXYLIC ACID AND (B) AT LEAST ONE BIFUNCTIONAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIHYDROXY COMPOUNDS AND ALIPHATIC DIAMINES, THE RELATIVE PROPORTIONS OF (A) AND (B) CONSTITUENTS BEING SUCH AS TO CONSTITUTE A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYESTERS AND POLYESTERAMIDES IN WHICH AT LEAST 50 MOLE PERCENT OF SAID BIFUNCTIONAL COMPOUND B CONSISTS OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF THE CIS AND TRANS ISOMERS OF 1,4-CYCLOHEXANEDIMETHANOL, WHICH POLYMER MELTS AT ABOVE 100* C, AND BELOW ABOUT 330* C, HAS AN INHERENT VISCOSITY OF AT LEAST 0.4 AS MEASURED IN A MIXTURE OF 40% TETRACHLOROETHANE PLUS 60% PHENOL AND IS CAPABLE OF BEING FORMED INTO FIBERS.
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) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |