US2563662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of polymers containing cyano groups with amines and hydrogen sulfide
Assignee: EIDP Inc
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Filing: 1947-05-02
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Granted: 1951-08-07
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Expires: 1967-05-02
Abstract
No abstract record available.
Inventors
- 👤 Rothrock George Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:36
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/51; D06M11/53; C; C08; C08K; C08K5/00; C08K5/16; C08K5/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR INSOLUBILIZING POLYMERIC STRUCTURES COMPRISING CROSS-LINKING STRUCTURES PREPARED FROM A POLYMER HAVING A PLURALITY OF NITRILE GROUPS ATTACHED TO THE POLYMER CHAIN BY HEATING, AT A TEMPERATURE OF ABOUT 100* C. TO ABOUT 150* C., SAID STRUCTURES IN A CARRIER WHICH IS INERT TO SAID STRUCTURES AND WHICH CONTAINS AT LEAST 50% OF THE SATURATION VALUE IN SAID CARRIER AT SAID TEMPERATURE OF A HYDROSULFIDE AND FROM ABOUT 0.2 TO ABOUT 2.0 MOLAR CONCENTRATION OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF METHYLAMINE, DIMETHYLAMINE AND TRIMETHYLAMINE THEREBY INSOLUBILIZING SAID STRUCTURES.
Claim 2
Dependent Claim
93 words
A PROCESS FOR INSOLUBILIZING POLYMERIC STRUCTURES COMPRISING CROSS-LINKING STRUCTURES PREPARED FROM A POLYMER HAVING A PLURALITY OF NITRILE GROUPS ATTACHED TO THE POLYMER CHAIN BY HEATING, AT A TEMPERATURE OF ABOUT 100* C. TO ABOUT 150* C., SAID STRUCTURES IN A CARRIER WHICH IS INERT TO SAID STRUCTURES AND WHICH CONTAINS AT LEAST 50% OF THE SATURATION VALUE IN SAID CARRIER AT SAID TEMPERATURE OF A HYDROSULFIDE AND FROM ABOUT 0.2 TO ABOUT 2.0 MOLAR CONCENTRATION OF AN AMINE SELECTED FROM THE GROUP CONSISTING OF METHYLAMINE, DIMETHYLAMINE AND TRIMETHYLAMINE THEREBY INSOLUBILIZING SAID STRUCTURES.
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) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |