Patent US3219649A successfully refreshed from Google Patents.
US3219649A
Expired / Lapsed
US
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Process and catalyst for production of olefin polymers
Assignee: Phillips Petroleum Co
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Filing: 1955-07-11
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Granted: 1965-11-23
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Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Nowlin Gene
- 👤 Harold D Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:56
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN THE POLYMERIZATION OF A-MONOOLEFINIC HYDROCARBON MATERIAL FROM THE GROUP CONSISTING OF ETHYLENE AND PROPYLENE TO FORM SOLID POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION WITH A CATALYTIC MIXTURE IN A MOLAR RATIO OF FROM 1:4 TO 4:1 OF A TITANIUM TETRAALKOXIDE WHEREIN EACH ALKOXIDE GROUP CONTAINS 1-13 CARBON ATOMS AND A MONOALKYL ALUMINUM DIHALIDE WHEREIN THE ALKYL GROUP CONTAINS 1-12 CARBON ATOMS AND THE HALOGEN ATOMS ARE FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE, AND THEREBY FORMING A SOLID POLYMER.
Claim 2
Dependent Claim
83 words
IN THE POLYMERIZATION OF A-MONOOLEFINIC HYDROCARBON MATERIAL FROM THE GROUP CONSISTING OF ETHYLENE AND PROPYLENE TO FORM SOLID POLYMER, THE IMPROVEMENT WHICH COMPRISES CATALYZING THE POLYMERIZATION WITH A CATALYTIC MIXTURE IN A MOLAR RATIO OF FROM 1:4 TO 4:1 OF A TITANIUM TETRAALKOXIDE WHEREIN EACH ALKOXIDE GROUP CONTAINS 1-13 CARBON ATOMS AND A MONOALKYL ALUMINUM DIHALIDE WHEREIN THE ALKYL GROUP CONTAINS 1-12 CARBON ATOMS AND THE HALOGEN ATOMS ARE FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE, AND THEREBY FORMING A SOLID POLYMER.
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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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |