US2656334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic polymerization process
Assignee: Beazer East Inc
•
Filing: 1948-09-28
•
Granted: 1953-10-20
•
Expires: 1968-09-28
Abstract
No abstract record available.
Inventors
- 👤 Alelio Gaetano F D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:55
CPC Classifications
C; C08; C08F; C08F2/00; Y; Y10; Y10S; Y10S260/00; Y10S260/28; Y10S264/00; Y10S264/59
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE PROCESS OF POLYMERIZING A POLYMERIZABLE MASS COMPRISING A VINYL ARYL COMPOUND INTIMATELY MIXED WITH A CATALYST-COMBINATION, CONSISTING OF 2,2-DI(TERTIARY-BUTYLPEROXY)-BUTANE AND A BENZOYL PEROXIDE OF THE CLASS CONSISTING OF BENZOYL PEROXIDE AND ITS CHLORO, BROMO, FLUORO, ALKOXY ALKYL, BENZO AND CARBOPEROXY NUCLEAR-SUBSTITUTED DERIVATIVES BY HEATING THE POLYMERIZABLE MASS AT 25*-95* C. UNTIL AT LEAST ABOUT 6- PERCENT CONVERSION TO POLYMER HAS BEEN EFFECTED, AND SUBSEQUENTLY AT 100*-150* C. UNTIL SUBSTANTIALLY COMPLETE POLYMERIZATION HAS BEEN EFFECTED.
Claim 2
Dependent Claim
75 words
THE PROCESS OF POLYMERIZING A POLYMERIZABLE MASS COMPRISING A VINYL ARYL COMPOUND INTIMATELY MIXED WITH A CATALYST-COMBINATION, CONSISTING OF 2,2-DI(TERTIARY-BUTYLPEROXY)-BUTANE AND A BENZOYL PEROXIDE OF THE CLASS CONSISTING OF BENZOYL PEROXIDE AND ITS CHLORO, BROMO, FLUORO, ALKOXY ALKYL, BENZO AND CARBOPEROXY NUCLEAR-SUBSTITUTED DERIVATIVES BY HEATING THE POLYMERIZABLE MASS AT 25*-95* C. UNTIL AT LEAST ABOUT 6- PERCENT CONVERSION TO POLYMER HAS BEEN EFFECTED, AND SUBSEQUENTLY AT 100*-150* C. UNTIL SUBSTANTIALLY COMPLETE POLYMERIZATION HAS BEEN EFFECTED.
References Cited (Backward Citations)
US2331273A
Cited
US2328333A
Cited
US2394407A
Cited
US2317138A
Cited
US2426476A
Cited
US2496653A
Cited
US2456558A
Cited
GB604544A
Cited
US2444655A
Cited
US2485535A
Cited
US2455569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |