US2836627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 6-tertiary butyl orthocresol
Assignee: Consolidation Coal Co
•
Filing: 1956-01-05
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Granted: 1958-05-27
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Expires: 1976-01-05
Abstract
No abstract record available.
Inventors
- 👤 Martin B Neuworth
- 👤 Eric B Hotelling
- 👤 Elizabeth A Depp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:53
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE METHOD OF PREPARING 6-TERTIARY BUTYL ORTHO-CRESOL WHICH COMPRISES PASSING UP TO ONE MOLAR EQUIVALENT OF ISOBUTYLENE INTO CONTACT WITH ORTHO-CRESOL CONTAINING FROM ABOUT 0.08 TO ABOUT 1.0 PERCENT BY WEIGHT OF CONCENTRATED SULFURIC ACID AT TEMPERATURES IN THE RANGE OF 70 TO 100* C., THE AMOUNT OF SULFURIC ACID BEING VARIED DEPENDING UPON THE TEMPERATURE EMPLOYED, SMALLER AMOUNTS OF THE SULFURIC ACID BEING USED AT HIGHER TEMPERATURES, AND THEREAFTER NEUTRALIZING THE SULFURIC ACID, THEREBY STABILIZING THE RESULTING ALKYLATE CONTAINING 6-TERTIARY BUTYL ORTHOCRESOL AGAINST REARRANGEMENT TO FORM 4-TERTIARY BUTYL ORTHO-CRESOL, AND RECOVERING AT LEAST ONE-HALF MOL OF 6TERTIARY BUTYL ORTHO-CRESOL FOR EACH MOL OF ORTHO-CRESOL CONSUMED IN THE PROCESS.
Claim 2
Independent Claim
109 words
THE METHOD OF PREPARING 6-TERTIARY BUTYL ORTHO-CRESOL WHICH COMPRISES PASSING UP TO ONE MOLAR EQUIVALENT OF ISOBUTYLENE INTO CONTACT WITH ORTHO-CRESOL CONTAINING FROM ABOUT 0.08 TO ABOUT 1.0 PERCENT BY WEIGHT OF CONCENTRATED SULFURIC ACID AT TEMPERATURES IN THE RANGE OF 70 TO 100* C., THE AMOUNT OF SULFURIC ACID BEING VARIED DEPENDING UPON THE TEMPERATURE EMPLOYED, SMALLER AMOUNTS OF THE SULFURIC ACID BEING USED AT HIGHER TEMPERATURES, AND THEREAFTER NEUTRALIZING THE SULFURIC ACID, THEREBY STABILIZING THE RESULTING ALKYLATE CONTAINING 6-TERTIARY BUTYL ORTHOCRESOL AGAINST REARRANGEMENT TO FORM 4-TERTIARY BUTYL ORTHO-CRESOL, AND RECOVERING AT LEAST ONE-HALF MOL OF 6TERTIARY BUTYL ORTHO-CRESOL FOR EACH MOL OF ORTHO-CRESOL CONSUMED IN THE PROCESS.
References Cited (Backward Citations)
US2107060A
Cited
US2560666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |