US2726224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acceleration of the reaction between butyl rubber and dimethylol phenols by means of heavy metal halides, and product obtained thereby
Assignee: Uniroyal Inc
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Filing: 1953-01-02
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Granted: 1955-12-06
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Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 Lester C Peterson
- 👤 Harvey J Batts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:53
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/16; C08L; C08L23/00; C08L23/02; C08L23/18; C08L23/20; C08L23/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
138 words
IN THE METHOD OF CHEMICALLY MODIFYING A SYNTHETIC RUBBERY COPOLYMER OF AN ISOOLEFIN HAVING FROM 4 TO 7 CARBON ATOMS WITH FROM 0.5 TO 10% OF AN ALIPHATIC CONJUGATED DIOLEFIN HAVING FROM 4 TO 6 CARBON ATOMS BY HEATING THE SAID RUBBER IN ADMIXING WITH A RESINOUS, OIL-SOLUBLE, HEAT-REACTIVE 2,6-DIMETHYLOL-4-HYDROCARBON PHENOL, THE SAID HYDROCARBON BEING SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL, ARYL AND ARALKYL RADICALS, THE IMPROVEMENT WHICH COMPRISES THE STEP OF CARRYING OUT THE SAID MODIFICATION IN THE PRESENCE OF A METAL CHLORIDE IN WHICH THE SAID METAL IS SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND HEAVY METALS, SAID METAL CHLORIDE BEING PRESENT IN AMOUNT SUFFICIENT TO ACCELERATE THE SAID MODIFICATION, SAID AMOUNT BEING WITHIN THE RANGE OF FROM A FEW TENTHS OF A PART TO 10 PARTS PER 100 PARTS OF SAID RUBBER.
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) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |