US3227699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving the processability and extrudability of olefin polymers
Assignee: Phillips Petroleum Co
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Filing: 1961-08-14
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Granted: 1966-01-04
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Expires: 1981-08-14
Abstract
No abstract record available.
Inventors
- 👤 Rendon Frank
- 👤 Gaylon T Click
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:15
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR THE POLYMERIZATION OF A 1-OLEFIN SELECTED FROM THE GROUP CONSISTING OF 1-OLEFIN CONTAINING FROM 2 TO 8 CARBON ATOMS PER MOLECULE AND NO CHAIN BRANCHING NEARER THE DOUBLE BOND THAN THE 4 POSITION COMPRISING CONTACTING SAID 1-OLEFIN IN A POLYMERIZATION ZONE UNDER POLYMERIZATION CONDITIONS WITH A CATALYST COMPRISING CHROMIUM OXIDE AND AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICA, ALUMINA, ZIRCONIA AND THORIA, AT LEAST PART OF THE DHROMIUM BEING IN THE HEXAVALENT STATE AT THE INITIAL CONTACTING OF HYDROCARBON WITH SAID CATALYST, AND IN THE PRESENCE OF A TREATING AGENT SELECTED FROM THE GROUP CONSISTING OF CYCLOPENTANONE, CYCLOHEXANONE AND CYCLOHEPTANONE IN AN AMOUNT SUFFICIENT TO MAINTAIN SUBSTANTIALLY CONSTANT EXTRUDABILITY AND PROCESSABILITY CHARACTERISTICS, AS MEASURED BY CIL FLOW, OF THE THUS PRODUCED POLYMER PRODUCT.
Claim 2
Dependent Claim
130 words
A PROCESS FOR THE POLYMERIZATION OF A 1-OLEFIN SELECTED FROM THE GROUP CONSISTING OF 1-OLEFIN CONTAINING FROM 2 TO 8 CARBON ATOMS PER MOLECULE AND NO CHAIN BRANCHING NEARER THE DOUBLE BOND THAN THE 4 POSITION COMPRISING CONTACTING SAID 1-OLEFIN IN A POLYMERIZATION ZONE UNDER POLYMERIZATION CONDITIONS WITH A CATALYST COMPRISING CHROMIUM OXIDE AND AT LEAST ONE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICA, ALUMINA, ZIRCONIA AND THORIA, AT LEAST PART OF THE DHROMIUM BEING IN THE HEXAVALENT STATE AT THE INITIAL CONTACTING OF HYDROCARBON WITH SAID CATALYST, AND IN THE PRESENCE OF A TREATING AGENT SELECTED FROM THE GROUP CONSISTING OF CYCLOPENTANONE, CYCLOHEXANONE AND CYCLOHEPTANONE IN AN AMOUNT SUFFICIENT TO MAINTAIN SUBSTANTIALLY CONSTANT EXTRUDABILITY AND PROCESSABILITY CHARACTERISTICS, AS MEASURED BY CIL FLOW, OF THE THUS PRODUCED POLYMER PRODUCT.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |