US2744074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric organic aluminum oxides and method for preparing same
Assignee: EIDP Inc
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Filing: 1951-04-18
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Granted: 1956-05-01
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Expires: 1971-04-18
Abstract
No abstract record available.
Inventors
- 👤 Clement W Theobald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:42
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/10; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD FOR PREPARING AN ORGANIC POLYMERIC ALUMINUM COMPOUND WHICH COMPRISES REACTING AN ALUMINUM ALKOXIDE HAVING THE FORMULA AL(OR)3 WHEREIN R IS AN ALKYL GROUP CONTAINING FROM 1 TO 18 CARBON ATOMS, WITH AN ANHYDROUS CARBOXYLIC ACID, EMPLOYING IN THE REACTION AT LEAST ONE MOLAR EQUIVALENT OF ACID PER MOL OF ALKOXIDE, ISOLATING THE RESULTING REACTION PRODUCT AND SUBJECTING IT TO CONDENSATION POLYMERIZATION BY HEATING TO A TEMPERATURE RANGING FROM ABOUT 120* C.-350* C. UNDER VACUUM UNTIL REMOVAL OF VOLATILE PRODUCTS CEASES.
Claim 2
Independent Claim
82 words
A METHOD FOR PREPARING AN ORGANIC POLYMERIC ALUMINUM COMPOUND WHICH COMPRISES REACTING AN ALUMINUM ALKOXIDE HAVING THE FORMULA AL(OR)3 WHEREIN R IS AN ALKYL GROUP CONTAINING FROM 1 TO 18 CARBON ATOMS, WITH AN ANHYDROUS CARBOXYLIC ACID, EMPLOYING IN THE REACTION AT LEAST ONE MOLAR EQUIVALENT OF ACID PER MOL OF ALKOXIDE, ISOLATING THE RESULTING REACTION PRODUCT AND SUBJECTING IT TO CONDENSATION POLYMERIZATION BY HEATING TO A TEMPERATURE RANGING FROM ABOUT 120* C.-350* C. UNDER VACUUM UNTIL REMOVAL OF VOLATILE PRODUCTS CEASES.
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) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |