US2980656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for production of soluble chlorinated polymers
Assignee: Phillips Petroleum Co
•
Filing: 1954-08-30
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Granted: 1961-04-18
•
Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Rufus V Jones
- 👤 Peter J Canterino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:09
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/12; C08C19/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
THE PROCESS OF CHLORINATING A RUBBERY BUTADIENE POLYMER COMPRISING REACTING THE POLYMER UNDER ANHYDROUS CONDITIONS WITH ELEMENTAL CHLORINE IN CARBON TETRACHLORIDE AT A TEMPERATURE OF ABOUT 5-80*C. AND IN THE PRESENCE OF OVER 1 PERCENT BUT NOT OVER 25 PERCENT BY WEIGHT OF A CATALYST BASED ON THE WEIGHT OF THE POLYMER, SAID CATALYST BEING SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS TRICHLORIDE AND PHOSPHORUS PENTACHLORIDE, AND RECOVERING A THERMOPLASTIC CHLORINATED POLYMER WHICH IS SOLUBLE IN CONVENTIONAL ORGANIC SOLVENTS.
Claim 2
Dependent Claim
79 words
THE PROCESS OF CHLORINATING A RUBBERY BUTADIENE POLYMER COMPRISING REACTING THE POLYMER UNDER ANHYDROUS CONDITIONS WITH ELEMENTAL CHLORINE IN CARBON TETRACHLORIDE AT A TEMPERATURE OF ABOUT 5-80*C. AND IN THE PRESENCE OF OVER 1 PERCENT BUT NOT OVER 25 PERCENT BY WEIGHT OF A CATALYST BASED ON THE WEIGHT OF THE POLYMER, SAID CATALYST BEING SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS TRICHLORIDE AND PHOSPHORUS PENTACHLORIDE, AND RECOVERING A THERMOPLASTIC CHLORINATED POLYMER WHICH IS SOLUBLE IN CONVENTIONAL ORGANIC SOLVENTS.
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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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |