US3207815A
Expired / Lapsed
US
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Free-radical polymerization process with bis(2-benzthiazole) accelerators
Assignee: Pure Oil Co
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Filing: 1962-07-13
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Granted: 1965-09-21
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Expires: 1982-07-13
Abstract
No abstract record available.
Inventors
- 👤 Louis A Joo
- 👤 John B Braunwarth
- 👤 Rai Charanjit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:28
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/28; C08F4/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN THE METHOD OF POLYMERIZING A POLYMERIZABLE SYSTEM, CONTAINING AT LEAST ONE POLYMERIZABLE COMPOUND HAVING A TERMINAL ETHYLENIC GROUP, WHICH IS POLYMERIZABLE IN THE PRESENCE OF A FREE RADICAL-RELEASING PEROXIDE CATALYST, SAID POLYMERIZABLE SYSTEM CONTAINING AN EFFECTIVE AMOUNT OF SAID CATALYST TO PRODUCE POLYMERIZATION, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID POLYMERIZABLE SYSTEM, IN AN AMOUNT SUFFICIENT TO ACCELERATE THE POLYMERIZATION THEREOF, A COMPOUND OF THE FORMULA,
Claim 2
Dependent Claim
67 words
IN THE METHOD OF POLYMERIZING A POLYMERIZABLE SYSTEM, CONTAINING AT LEAST ONE POLYMERIZABLE COMPOUND HAVING A TERMINAL ETHYLENIC GROUP, WHICH IS POLYMERIZABLE IN THE PRESENCE OF A FREE RADICAL-RELEASING PEROXIDE CATALYST, SAID POLYMERIZABLE SYSTEM CONTAINING AN EFFECTIVE AMOUNT OF SAID CATALYST TO PRODUCE POLYMERIZATION, THE IMPROVEMENT WHICH COMPRISES ADDING TO SAID POLYMERIZABLE SYSTEM, IN AN AMOUNT SUFFICIENT TO ACCELERATE THE POLYMERIZATION THEREOF, A COMPOUND OF THE FORMULA,
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |