Patent US3242228A successfully refreshed from Google Patents.
US3242228A
Expired / Lapsed
US
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Hydrocarbon isomerization process and catalyst
Assignee: Texaco Inc
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Filing: 1962-12-07
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Granted: 1966-03-22
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Expires: 1982-12-07
Abstract
No abstract record available.
Inventors
- 👤 Michael D Riordan
- 👤 John H Estes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:29
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/2724; B; B01; B01J; B01J27/00; B01J27/06; B01J27/128; B01J27/13; C07C5/2206; C07C5/226; C07C5/2767; C07C5/277; C07C5/2791; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
THE METHOD OF ISOMERIZING A PARAFFINIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF BUTANES, PENTANES AND HEXANES WHICH COMPRISES CONTACTING SAID HYDROCARBON AT ISOMERIZATION CONDITIONS INCLUDING A TEMPERATURE WITHIN THE RANGE OF ABOUT 250 TO 400*F., A LIQUID HOURLY SPACE VELOCITY WITHIN THE RANGE OF 0.5 TO 2.0, AND A HYDROGEN TO HYDROCARBON MOL RATIO WITHIN THE RANGE OF ABOUT 0.10:1 TO 5.0:1 WITH A CATALYST COMPRISING ALUMINA, PLATINUM AND CHLORINE, WHEREIN AT LEAST A PART OF SAID CHLORINE IS INTRODUCED INTO SAID CATALYST BY CONTACTING A COMPOSITE OF PLATINUM AND ALUMINA WITH AN ORGANIC CHLORIDE ACTIVATING AGENT HAVING AN ATOMIC RATIO OF CHLORINE TO CARBON OF AT LEAST TWO TO ONE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 300 TO 600*F. FORMING A CHLORIDED COMPOSITE AND THEREAFTER ENHANCING THE ACTIVITY AND STABILITY OF SAID CATALYST BY HEATING SAID CHLORIDED COMPOSITE TO A TEMPERATURE WITHIN THE RANGE OF 400 TO 1,000* F. IN CONTACT WITH HYDROGEN CHLORIDE PRIOR TO INITIAL USE FOR SAID ISOMERIZATION.
Claim 2
Independent Claim
165 words
THE METHOD OF ISOMERIZING A PARAFFINIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF BUTANES, PENTANES AND HEXANES WHICH COMPRISES CONTACTING SAID HYDROCARBON AT ISOMERIZATION CONDITIONS INCLUDING A TEMPERATURE WITHIN THE RANGE OF ABOUT 250 TO 400*F., A LIQUID HOURLY SPACE VELOCITY WITHIN THE RANGE OF 0.5 TO 2.0, AND A HYDROGEN TO HYDROCARBON MOL RATIO WITHIN THE RANGE OF ABOUT 0.10:1 TO 5.0:1 WITH A CATALYST COMPRISING ALUMINA, PLATINUM AND CHLORINE, WHEREIN AT LEAST A PART OF SAID CHLORINE IS INTRODUCED INTO SAID CATALYST BY CONTACTING A COMPOSITE OF PLATINUM AND ALUMINA WITH AN ORGANIC CHLORIDE ACTIVATING AGENT HAVING AN ATOMIC RATIO OF CHLORINE TO CARBON OF AT LEAST TWO TO ONE AT A TEMPERATURE WITHIN THE RANGE OF ABOUT 300 TO 600*F. FORMING A CHLORIDED COMPOSITE AND THEREAFTER ENHANCING THE ACTIVITY AND STABILITY OF SAID CATALYST BY HEATING SAID CHLORIDED COMPOSITE TO A TEMPERATURE WITHIN THE RANGE OF 400 TO 1,000* F. IN CONTACT WITH HYDROGEN CHLORIDE PRIOR TO INITIAL USE FOR SAID ISOMERIZATION.
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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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |