US3082196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin polymerization using aici3-omega or ta catalyst
Assignee: Dal Mon Research Co
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Filing: 1960-02-03
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Granted: 1963-03-19
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Expires: 1980-02-03
Abstract
No abstract record available.
Inventors
- 👤 Alelio Gaetano F D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:01
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
THE METHOD OF POLYMERIZING TO A SOLID POLYMER AN UNSATURATED HYDROCARBON HAVING A CH=C< GROUP THEREIN AND HAVING NO LESS THAN 2 CARBON ATOMS AND NO MORE THAN 8 CARBON ATOMS PER MOLECULE WHICH COMPRISES REACTING SAID OLEFIN IN AN INERT SOLVENT CONTAINING A CATALYST PREPARED BY REACTING UNDER INERT CONDITIONS, AT A TEMPERATURE IN THE RANGE OF ROOM TEMPERATURE TO ABOUT 400* C., A MIXTURE CONSISTING ESSENTIALLY OF AN ALUMINUM HALIDE AND A METAL SELECTED FROM THE CLASS CONSISTING OF TUNGSTEN AND TANTALUM, SAID REACTION BEING CONDUCTED BY GRINDING SAID MIXTURE AT A TEMPERATURE OF AT LEAST ROOM TEMPERATURE AND NO MORE THAN 170* C., THE MINIMUM PERIOD OF SAID GRINDING BEING INVERSELY PROPORTIONAL TO THE TEMPERATURE AND WITHIN THE RANGE OF AT LEAST TWO MINUTES WITH SAID 170* C. AND AT LEAST ONE-HALF HOUR WITH SAID ROOM TEMPERATURE.
Claim 2
Independent Claim
140 words
THE METHOD OF POLYMERIZING TO A SOLID POLYMER AN UNSATURATED HYDROCARBON HAVING A CH=C< GROUP THEREIN AND HAVING NO LESS THAN 2 CARBON ATOMS AND NO MORE THAN 8 CARBON ATOMS PER MOLECULE WHICH COMPRISES REACTING SAID OLEFIN IN AN INERT SOLVENT CONTAINING A CATALYST PREPARED BY REACTING UNDER INERT CONDITIONS, AT A TEMPERATURE IN THE RANGE OF ROOM TEMPERATURE TO ABOUT 400* C., A MIXTURE CONSISTING ESSENTIALLY OF AN ALUMINUM HALIDE AND A METAL SELECTED FROM THE CLASS CONSISTING OF TUNGSTEN AND TANTALUM, SAID REACTION BEING CONDUCTED BY GRINDING SAID MIXTURE AT A TEMPERATURE OF AT LEAST ROOM TEMPERATURE AND NO MORE THAN 170* C., THE MINIMUM PERIOD OF SAID GRINDING BEING INVERSELY PROPORTIONAL TO THE TEMPERATURE AND WITHIN THE RANGE OF AT LEAST TWO MINUTES WITH SAID 170* C. AND AT LEAST ONE-HALF HOUR WITH SAID ROOM TEMPERATURE.
References Cited (Backward Citations)
US2899415A
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US2355339A
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FR1132506A
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US2925392A
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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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |