US3843606A
Expired / Lapsed
US
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Preparation of ortho-alkylated phenols
Assignee: General Electric Co
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Filing: 1969-08-01
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Granted: 1974-10-22
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Expires: 1989-08-01
Abstract
Abstract This invention is for a shaped, alkylation catalyst comprising magnesium oxide bonded with an inert, organic polymeric binder and to the use of the catalyst in a proces for the orthoalkylation of phenols. The process comprises the vapor phase reaction of a non-ortho-substituted phenol with an alcohol in the presence of the catalyst. The catalyst of the invention is an improvement over prior art catalysts used for ortho-alkylation of phenols as it substantially reduces the induction period for maximum reaction selectivity, eliminates loss of catalyst arising with use of powders and substantially extends catalyst life.
Inventors
- 👤 Sorge B Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:12
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/16; B; B01; B01J; B01J37/00; B01J37/0009
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
35 words
IN A PROCESS FOR ALKYLATING A PHENOL IN THE ORTHO POSITION WHICH COMPRISES THE VAPOR PHASE REACTION IN THE PRESENCE OF AN ALKYLATION CATALYST OF AN ALKYL ALCOHOL AND A PHENOL HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
35 words
IN A PROCESS FOR ALKYLATING A PHENOL IN THE ORTHO POSITION WHICH COMPRISES THE VAPOR PHASE REACTION IN THE PRESENCE OF AN ALKYLATION CATALYST OF AN ALKYL ALCOHOL AND A PHENOL HAVING THE GENERAL FORMULA:
Claim 3
Dependent Claim
11 words
The process of claim 1 where the alcohol is methyl alcohol.
Claim 4
Dependent Claim
20 words
The process of claim 2 where the catalyst bed temperature is maintained at a temperature of at least 460* C.
Claim 5
Dependent Claim
10 words
The process of claim 2, where each R is hydrogen.
Claim 6
Dependent Claim
10 words
The process of claim 2 where the phenol is ortho-cresol.
Claim 7
Dependent Claim
16 words
The process of claim 2 where the phenol is a mixture of unsubstituted phenol and ortho-cresol.
Claim 8
Dependent Claim
21 words
The process of claim 1 where the polymeric binder comprises from 2 to 6 percent by weight of the total catalyst.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |