US3238185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrocene polymers
Assignee: DOUGLAS AIRERAFT Co Inc
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Filing: 1962-10-29
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Granted: 1966-03-01
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Eberhard W Neuse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:30
CPC Classifications
C; C08; C08G; C08G61/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A METHOD FOR PREPARING FERROCENCE POLYMERS HAVING THE STRUCTURE -(A-CH2)MWHEREIN M IS AN INTEGER GREATER THAN ONE AND -A- IS SELECTED FROM THE CLASS CONSISTING OF DIVALENT FERROCENE RADICALS AND DERIVATIVES THEREOF IN WHICH AT LEAST ONE OF THE NUCLEAR HYDROGENS OF SAID RADICALS IS SUBSTITUTED BY A HYDROCARBON GROUP SELECTED FROM THE CLASS CONSISTING OF LOW MOLECULAR WEIGHT ALKYL, ARYL AND ARALKYL RADICALS, SAID METHOD COMPRISING PROVIDING A MANNICH BASE SELECTED FROM THE CLASS CONSISTING OF N, N-DIMETHYLAMINOMETHYLFERROCENE AND DERIVATIVES THEREOF IN WHICH AT LEAST ONE OF THE NUCLEAR HYDROGENS OF THE CYCLOPENTADIENYL RINGS IS SUBSTITUTED BY A HYDROCARBON GROUP SELECTED FROM THE CLASS CONSISTING OF LOW MOLECULAR WEIGHT AKYL, ARYL AND ARALKYL RADICALS; AND HEATING SAID MANNICH BASE IN AN INERT ATMOSPHERE WITH AN ACID CATALYST FOR A TIME AND AT A TEMPERATURE TO CAUSE SUBSTANTIAL POLYCONDENSATION OF SAID MANNICH BASE WITH RESULTANT FORMATION OF THE ABOVE DESCRIBED FERROCENE POLYMER.
Claim 2
Independent Claim
152 words
A METHOD FOR PREPARING FERROCENCE POLYMERS HAVING THE STRUCTURE -(A-CH2)MWHEREIN M IS AN INTEGER GREATER THAN ONE AND -A- IS SELECTED FROM THE CLASS CONSISTING OF DIVALENT FERROCENE RADICALS AND DERIVATIVES THEREOF IN WHICH AT LEAST ONE OF THE NUCLEAR HYDROGENS OF SAID RADICALS IS SUBSTITUTED BY A HYDROCARBON GROUP SELECTED FROM THE CLASS CONSISTING OF LOW MOLECULAR WEIGHT ALKYL, ARYL AND ARALKYL RADICALS, SAID METHOD COMPRISING PROVIDING A MANNICH BASE SELECTED FROM THE CLASS CONSISTING OF N, N-DIMETHYLAMINOMETHYLFERROCENE AND DERIVATIVES THEREOF IN WHICH AT LEAST ONE OF THE NUCLEAR HYDROGENS OF THE CYCLOPENTADIENYL RINGS IS SUBSTITUTED BY A HYDROCARBON GROUP SELECTED FROM THE CLASS CONSISTING OF LOW MOLECULAR WEIGHT AKYL, ARYL AND ARALKYL RADICALS; AND HEATING SAID MANNICH BASE IN AN INERT ATMOSPHERE WITH AN ACID CATALYST FOR A TIME AND AT A TEMPERATURE TO CAUSE SUBSTANTIAL POLYCONDENSATION OF SAID MANNICH BASE WITH RESULTANT FORMATION OF THE ABOVE DESCRIBED FERROCENE POLYMER.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |