US3178401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-component alkyl aluminum halide catalysts for olefin polymerization and olefin polymerization process therewith
Assignee: Eastman Kodak Co
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Filing: 1960-10-17
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Granted: 1965-04-13
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Expires: 1980-10-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Frederick B Joyner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:52
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
124 words
IN THE POLYMERIZATION OF A-MONOOLEFINIC HYDROCARBON CONTAINING UP TO 10 CARBON ATOMS TO FORM SOLID CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION WITH A CATALYTIC MIXTURE CONTAINING AN ALUMINUM SESQUIHALIDE HAVING THE FORMULA R3AL2X3 WHEREIN R IS A HYDROCARBON RADICAL CONTAINING 1-12 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL AND ARALKYL AND X IS A HALOGEN ATOM SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE AND IODINE, A COMPOUND OF A TRANSITION METAL SELECTED FROMTHE GROUP CONSISTING OF TITANIUM, ZIRCONIUM, VANADIUM, CHROMIUM AND MOLYBDENUM AND AN ESTER HAVING THE FORMULA RCOOR1 WHEREIN R HAS THE FORMULA -(CH2)NCOOR2 WHEREIN N IS A NUMBR FROM 0 TO 4 AND R1 AND R2 ARE ALKYL RADICAL CONTAINING 1 TO 4 CARBON ATOMS.
References Cited (Backward Citations)
US2886561A
Cited
US2965627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |