US2804448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel method for preparing rubbery chlorinated isoolefin-polyolefin interpolymer derivatives
Assignee: Goodrich Corp
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Filing: 1954-06-01
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Granted: 1957-08-27
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Expires: 1974-06-01
Abstract
No abstract record available.
Inventors
- 👤 Victor L Hallenbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:15
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN THE PROCESS FOR CHLORINATING SOLID, PLASTIC, ISOOLEFIN-POLYOLEFIN INTERPOLYMERS THE IMPROVEMENT WHICH COMPRISES INTIMATELY MIXING AN AMOUNT OF AN N-CHLOROHYDANTOIN, SUFFICIENT TO CHLORINATE THE ISOOLEFIN-POLYOLEFIN INTERPOLYMER TO CONTAIN FROM ABOUT 0.4 TO 3.5 WEIGHT PERCENT CHLORINE WHILE RETAINING A PORTION OF THE ORIGINAL OLEFINIC UNSATURATION THE INTERPOLYMER WITH A SOLID INTERPOLYMER CONTAINING 70 TO 99 WEIGHT PERCENT OF AN ISOOLEFIN CONTAINING FROM 4 TO 8 CARBON ATOMS AND A TERMINAL METHYLENE GROUP COPOLYMERIZED WITH 1 TO 30 WEIGHT PERCENT OF A POLYOLEFINIC HYDROCARBON CONTAINING 4 TO 18 CARBON ATOMS AND HEATING THE MIXTURE AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO DEVELOP THE CHLORINECONTAINING INTERPOLYMER DERIVATIVES.
Claim 2
Dependent Claim
107 words
IN THE PROCESS FOR CHLORINATING SOLID, PLASTIC, ISOOLEFIN-POLYOLEFIN INTERPOLYMERS THE IMPROVEMENT WHICH COMPRISES INTIMATELY MIXING AN AMOUNT OF AN N-CHLOROHYDANTOIN, SUFFICIENT TO CHLORINATE THE ISOOLEFIN-POLYOLEFIN INTERPOLYMER TO CONTAIN FROM ABOUT 0.4 TO 3.5 WEIGHT PERCENT CHLORINE WHILE RETAINING A PORTION OF THE ORIGINAL OLEFINIC UNSATURATION THE INTERPOLYMER WITH A SOLID INTERPOLYMER CONTAINING 70 TO 99 WEIGHT PERCENT OF AN ISOOLEFIN CONTAINING FROM 4 TO 8 CARBON ATOMS AND A TERMINAL METHYLENE GROUP COPOLYMERIZED WITH 1 TO 30 WEIGHT PERCENT OF A POLYOLEFINIC HYDROCARBON CONTAINING 4 TO 18 CARBON ATOMS AND HEATING THE MIXTURE AT A TEMPERATURE AND FOR A TIME SUFFICIENT TO DEVELOP THE CHLORINECONTAINING INTERPOLYMER DERIVATIVES.
References Cited (Backward Citations)
US2291574A
Cited
US2327517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |