US3147230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Olefin copolymerization catalyst
Assignee: EIDP Inc
•
Filing: 1960-06-09
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Granted: 1964-09-01
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Expires: 1980-06-09
Abstract
No abstract record available.
Inventors
- 👤 Gladding Edward Karcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
C; C08; C08F; C08F210/00; Y; Y10; Y10S; Y10S526/00; Y10S526/903; Y10S526/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A CATALYST USEFUL IN THE PREPARATION OF AMORPHOUS OLEFIN COPOLYMERS, SAID CATALYST PREPARED BY CONTACTING ALUMINUM TRIISOBUTYL WITH FROM ABOUT 0.1 TO 3 MOLAR EQUIVALENTS OF A COMPOUND SELECTED FROMTHE GROUPS CONSISTING OF VANADYL CHLORIDE AND VANADIUM TETRACHLORIDE IN THE PRESENCE OF AN AMOUNT OF AN ALPHA OLEFIN HAVING THE STRUCTURE CH2=CH-R1 WHEREIN R IS AN ALKYL RADICAL HAVING 4 TO 16 CARBON ATOMS SUFFICIENT TO PROVIDE 3 MOLES OF SAID OLEFIN FOR EVERY MOLE OF ALMINUM TRIISOBUTYL, SAID CATALYST BEING PREPARED IN A SATURATED HYDROCARBON SOLVENT AT A TEMPERATURE BELOW ABOUT 90* C., AND SAID CATALYST BEING SOLUBLE IN SAID SATURATED HYDROCARBON SOLVENT; OTHER OLEFINS POLYMERIZABLE BY THIS CATALYST BEING ABSENT DURING THE FORMATION OF SAID CATALYST.
Claim 2
Dependent Claim
118 words
A CATALYST USEFUL IN THE PREPARATION OF AMORPHOUS OLEFIN COPOLYMERS, SAID CATALYST PREPARED BY CONTACTING ALUMINUM TRIISOBUTYL WITH FROM ABOUT 0.1 TO 3 MOLAR EQUIVALENTS OF A COMPOUND SELECTED FROMTHE GROUPS CONSISTING OF VANADYL CHLORIDE AND VANADIUM TETRACHLORIDE IN THE PRESENCE OF AN AMOUNT OF AN ALPHA OLEFIN HAVING THE STRUCTURE CH2=CH-R1 WHEREIN R IS AN ALKYL RADICAL HAVING 4 TO 16 CARBON ATOMS SUFFICIENT TO PROVIDE 3 MOLES OF SAID OLEFIN FOR EVERY MOLE OF ALMINUM TRIISOBUTYL, SAID CATALYST BEING PREPARED IN A SATURATED HYDROCARBON SOLVENT AT A TEMPERATURE BELOW ABOUT 90* C., AND SAID CATALYST BEING SOLUBLE IN SAID SATURATED HYDROCARBON SOLVENT; OTHER OLEFINS POLYMERIZABLE BY THIS CATALYST BEING ABSENT DURING THE FORMATION OF SAID CATALYST.
References Cited (Backward Citations)
US2962451A
Cited
US2977350A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |