Patent US2826622A successfully refreshed from Google Patents.
US2826622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process
Assignee: California Research LLC
•
Filing: 1954-09-28
•
Granted: 1958-03-11
•
Expires: 1974-09-28
Abstract
No abstract record available.
Inventors
- 👤 Jacob D Kemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:18
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
IN A PROCESS FOR POLYMERIZING NORMALLY GASEOUS OLEFINS TO POLYMERS BOILING IN THE C6-C8 RANGE, THE STEPS COMPRISING CONTACTING SAID OLEFINS, AT A TEMPERATURE BETWEEN 350 TO 600*F. AND A PRESSURE OF FROM 50 TO 2000 P. S. I. G., WITH LIQUID PHOSPHORIC ACID HAVING A CONCENTRATION OF FROM ABOUT 90 TO 116%, BASED UPON THE H3PO4 CONTENT THEREOF, AND CONTAINING AT LEAST ONE PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF AMMONIUM PHOSPHATES, AMINE SALTS OF PHOSPHORIC ACID AND ALKAKI METAL SALTS OF PHOSPHORIC ACID, THE CONTENT OF SAID PHOSPHATE IN THE CATALYST BEING SUCH THAT THE ATOM RATIO OF THE SUM OF ALKALI METAL AND NITROGEN PRESENT TO PHOSPHATE HAS A VALUE BETWEEN ABOUT 0.01 AND 0.25, SEPARATING THE RESULTING REACTION MIXTURE INTO A HYDROCARBON PHASE AND A CATALYST PHASE CONTAINING SAID PHOSPHATE, AND RECOVERING FROM SAID HYDROCARBON PHASE THOSE FRACTIONS CONTAINING THE DESIRED C6-C8 POLYMERS.
Claim 2
Dependent Claim
147 words
IN A PROCESS FOR POLYMERIZING NORMALLY GASEOUS OLEFINS TO POLYMERS BOILING IN THE C6-C8 RANGE, THE STEPS COMPRISING CONTACTING SAID OLEFINS, AT A TEMPERATURE BETWEEN 350 TO 600*F. AND A PRESSURE OF FROM 50 TO 2000 P. S. I. G., WITH LIQUID PHOSPHORIC ACID HAVING A CONCENTRATION OF FROM ABOUT 90 TO 116%, BASED UPON THE H3PO4 CONTENT THEREOF, AND CONTAINING AT LEAST ONE PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF AMMONIUM PHOSPHATES, AMINE SALTS OF PHOSPHORIC ACID AND ALKAKI METAL SALTS OF PHOSPHORIC ACID, THE CONTENT OF SAID PHOSPHATE IN THE CATALYST BEING SUCH THAT THE ATOM RATIO OF THE SUM OF ALKALI METAL AND NITROGEN PRESENT TO PHOSPHATE HAS A VALUE BETWEEN ABOUT 0.01 AND 0.25, SEPARATING THE RESULTING REACTION MIXTURE INTO A HYDROCARBON PHASE AND A CATALYST PHASE CONTAINING SAID PHOSPHATE, AND RECOVERING FROM SAID HYDROCARBON PHASE THOSE FRACTIONS CONTAINING THE DESIRED C6-C8 POLYMERS.
References Cited (Backward Citations)
US2060871A
Cited
US2300123A
Cited
US2216549A
Cited
US2537282A
Cited
US2592428A
Cited
US2620361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |