US3743630A
Expired / Lapsed
US
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Styrene polymerization with ring substituted alkyl perbenzoates and new branched chain alkyl perbenzoates
Assignee: ARGUS CHEM CORP US
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Filing: 1971-06-30
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Granted: 1973-07-03
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Expires: 1991-06-30
Abstract
Abstract USE OF RING SUBSTITUTED ALKYL PERBENZOATES ALONE OR IN COMBINATION WITH BENZOYL PEROXIDE FOR POLYMERIZATION OF STYRENE MONOMER TO POLYSTYRENE. NEW BREACHED CHAIN T-ALKYL PERBENZONATES HAVE THE SAME UTILITY. TYPICAL IS USE OF T-BUTYL PER O-METHOXY BENZONATE AND 1,1,3,3-TETRAMETHYLBUTYL PERBENZOATE.
Inventors
- 👤 D Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:47
CPC Classifications
C; C08; C08F; C08F12/00; C08F12/02; C08F12/04; C08F12/06; C08F12/08
Claims Analysis
Total Claims: 0
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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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |