Patent US3201378A successfully refreshed from Google Patents.
US3201378A
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Polymerization process using a reaction vessel coated with oxidized aluminum
Assignee: EIDP Inc
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Filing: 1962-10-08
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Granted: 1965-08-17
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Charles C Ketterer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:29
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F20/08; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN A PROCESS FOR POLYMERIZING A MONOMER COMPOSITION COMPRISED OF AMAJOR PROPORTIN OF ACRYLONITRILE AND A MINOR PROPORTION OF A COPOLYMERIZABLE MONOMER SELECTED FROM THE GROUP CONSISTING F A VINYL PYRIDINE AND A NEUTRAL ETHYLENICALLY UNSATURATED MONOMER IN THE PRESENCE OF A CATALYZING AMOUNT OF A PEROXY CATALYST AND AN ACTIVATOR SELECTED FROM THE GROUP CONSISTING OF 1-THIOGLYCEROL AND 1-THIOSORBITOL, THE IMPROVEMENT WHICH COMPRISES POLYMERIZING SAID MONOMER COMPOSITION IN A REACTION ZONE SUBSTANTIALLY BOUNDED BY OXIDIZED ALUMINUM.
Claim 2
Dependent Claim
77 words
IN A PROCESS FOR POLYMERIZING A MONOMER COMPOSITION COMPRISED OF AMAJOR PROPORTIN OF ACRYLONITRILE AND A MINOR PROPORTION OF A COPOLYMERIZABLE MONOMER SELECTED FROM THE GROUP CONSISTING F A VINYL PYRIDINE AND A NEUTRAL ETHYLENICALLY UNSATURATED MONOMER IN THE PRESENCE OF A CATALYZING AMOUNT OF A PEROXY CATALYST AND AN ACTIVATOR SELECTED FROM THE GROUP CONSISTING OF 1-THIOGLYCEROL AND 1-THIOSORBITOL, THE IMPROVEMENT WHICH COMPRISES POLYMERIZING SAID MONOMER COMPOSITION IN A REACTION ZONE SUBSTANTIALLY BOUNDED BY OXIDIZED ALUMINUM.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |