Patent US4105698A successfully refreshed from Google Patents.
US4105698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of cinnamyl-substituted phenols
Assignee: ConocoPhillips Co
•
Filing: 1977-02-16
•
Granted: 1978-08-08
•
Expires: 1997-02-16
Abstract
Abstract A process for preparing ortho-substituted cinnamyl phenols is disclosed. The process comprises heating a mixture of cinnamyl alcohol and phenol in the presence of an effective amount of activated alumina.
Inventors
- 👤 Charles M. Starks
- 👤 Allan J. Lundeen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:08
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
53 words
A process for preparing orthosubstituted cinnamyl phenols wherein the process comprises heating an admixture of phenol and cinnamyl alcohol in the liquid phase and at a temperature in the range of about 125° to about 250° C. in the presence of an effective amount of activated alumina, which is α alumina monohydrate, catalyst.
Claim 2
Dependent Claim
53 words
A process for preparing orthosubstituted cinnamyl phenols wherein the process comprises heating an admixture of phenol and cinnamyl alcohol in the liquid phase and at a temperature in the range of about 125° to about 250° C. in the presence of an effective amount of activated alumina, which is α alumina monohydrate, catalyst.
Claim 3
Dependent Claim
29 words
The process of claim 1 wherein the phenol and cinnamyl alcohol are present in the range of about 0.1 to about 5 parts by weight of phenol to alcohol.
Claim 4
Dependent Claim
34 words
The process of claim 2 wherein the amount of activated alumina catalyst is in the range of about 1 to about 100 parts by weight of the combined amount of phenol and cinnamyl alcohol.
Claim 5
Dependent Claim
20 words
The process of claim 3 wherein the reaction time is in the range of about 0.1 to about 15 hours.
Claim 6
Dependent Claim
19 words
The process of claim 4 wherein the temperature is in the range of about 150° to about 180° C.
Claim 7
Dependent Claim
29 words
The process of claim 5 wherein the phenol and cinnamyl alcohol are present in the range of about 1 to about 3 parts by weight of phenol to alcohol.
Claim 8
Dependent Claim
34 words
The process of claim 6 wherein the amount of activated alumina catalyst is in the range of about 5 to about 35 parts by weight of the combined amount of phenol and cinnamyl alcohol.
Claim 9
Dependent Claim
34 words
The process of claim 7 wherein the activated alumina has the following additional properties: surface area, meters/gram:230 - 300 Al 2 O 3 , weight percent:70 - 75 loose bulk density, grams/liter:650 - 720.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-07 | 1982-02-06 | 1982-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-07 | 1986-02-06 | 1986-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-07 | 1990-02-06 | 1990-08-08 | $7700.00 | Window Closed / Lapsed |