US2655547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alkylphenols
Assignee: —
•
Filing: —
•
Granted: 1953-10-13
•
Expires: 1970-10-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:15
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/06; C07C37/11; C07C37/14; C07C37/16; C07C37/18; C07C39/00; C07C39/02; C07C39/06; C07C39/12; C07C39/15; C07C43/00; C07C43/02; C07C43/20; C07C43/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR THE PRODUCTION OF TERTIARYBUTYLPHENOL COMPOUNDS CONTAINING A LARGE PROPORTION OF THE ORTHO ISOMER WHICH COMPRISES BRINGING ONE MOLECULAR PROPORTION OF ISOBUTYLENE INTO CONTACT WITH GREATER THAN ONE MOLECULAR PROPORTION OF A PHENOL CONTAINING NOT MORE THAN ONE NUCLEAR SUBSTITUENT ORTHO TO THE HYDROXY GROUP, IN THE PRESENCE OF 0.1 TO 10 PER CENT BY WEIGHT OF PHOSPHORUS OXYCHLORIDE CATALYST BASED ON THE WEIGHT OF THE PHENOL, AT A TEMPERATURE IN THE RANGE OF 30* TO 200* C. FOR A TIME SUFFICIENT TO EFFECT SUBSTANTIALLY COMPLETE REACTION, AND RECOVERING THE ORTHO-TERT-BUTYLPHENOL COMPOUND SO PRODUCED.
Claim 2
Dependent Claim
23 words
A PROCESS ACCORDING TO CLAIM 9 FOR THE PRODUCTION OF TERT-BUTYL-O-PHENYLPHENOLS CONTAINING A LARGE PROPORTION OF 6-TERT-BUTYL-O-PHENYLPHENOL WHEREIN ISOBUTYLENE IS REACTED WITH OPHENYLPHENOL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |