US2984653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of a supported chromium oxide-dicarboxylic acid catalyst and polymerization of olefins thereby
Assignee: Phillips Petroleum Co
•
Filing: 1958-06-30
•
Granted: 1961-05-16
•
Expires: 1978-06-30
Abstract
No abstract record available.
Inventors
- 👤 Donald R Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A PROCESS FOR POLYMERIZING AN ALIPHATIC 1-OLEFIN CONTAINING UP TO AND INCLUDING 8 CARBON ATOMS PER MOLECULE AND NO CHAIN BRANCHING NEARER THE DOUBLE BOND THAN THE 4-POSITION WHICH COMPRISES CONTACTING SAID OLEFIN WITH A CATALYST CONSISTING ESSENTIALLY OF A COMPOSITE PREPARED BY DEPOSITING (1) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM OXIDE AND A CHROMIUM COMPOUND CONVERTIBLE TO CHROMIUM OXIDE BY CALCINATION, AND (2) A DICARBOXYLIC ORGANIC ACID ON A SUPPORT CONSISTING ESSENTIALLY OF AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF SILICA AND ALUMINA AND ACTIVATING THE RESULTING MATERIAL BY HEATING SAME AT A TEMPERATURE IN THE RANGE OF 750 TO 1000*F. IN THE PRESENCE OF OXYGEN, SAID CONTACTING OCCURRING AT A TEMPERATURE IN THE RANGE OF 100 TO 450*F.; AND RECOVERING THE OLEFIN POLYMER SO PRODUCED.
Claim 2
Dependent Claim
133 words
A PROCESS FOR POLYMERIZING AN ALIPHATIC 1-OLEFIN CONTAINING UP TO AND INCLUDING 8 CARBON ATOMS PER MOLECULE AND NO CHAIN BRANCHING NEARER THE DOUBLE BOND THAN THE 4-POSITION WHICH COMPRISES CONTACTING SAID OLEFIN WITH A CATALYST CONSISTING ESSENTIALLY OF A COMPOSITE PREPARED BY DEPOSITING (1) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM OXIDE AND A CHROMIUM COMPOUND CONVERTIBLE TO CHROMIUM OXIDE BY CALCINATION, AND (2) A DICARBOXYLIC ORGANIC ACID ON A SUPPORT CONSISTING ESSENTIALLY OF AT LEAST ONE OXIDE SELECTED FROM THE GROUP CONSISTING OF SILICA AND ALUMINA AND ACTIVATING THE RESULTING MATERIAL BY HEATING SAME AT A TEMPERATURE IN THE RANGE OF 750 TO 1000*F. IN THE PRESENCE OF OXYGEN, SAID CONTACTING OCCURRING AT A TEMPERATURE IN THE RANGE OF 100 TO 450*F.; AND RECOVERING THE OLEFIN POLYMER SO PRODUCED.
References Cited (Backward Citations)
US2825721A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |