Patent US4065434A successfully refreshed from Google Patents.
US4065434A
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Method of preparing high molecular weight polyphenoxy ethers from alkyl phenols
Assignee: Zeneca Inc
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Filing: 1977-01-12
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Granted: 1977-12-27
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Expires: 1997-01-12
Abstract
Abstract An improved method of preparing high molecular weight polyphenoxy ethers from alkyl phenols is disclosed. The method involves contacting a solution of an alkyl phenol in the presence of an alkaline material and an oxygen carrying gas with a catalyst comprising activated or precipitated alumina supporting mixed oxides of manganese, chromium, and copper in which the metals are present in an amount of 5 to 25 percent chromium, 3 to 15 percent copper based on the total weight of the catalyst and in which the weight ratio range of manganese to chromium is 1.9-0.9 to 1. The method may optionally include the use of an amine.
Inventors
- 👤 Thomas F. Rutledge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:03
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/44
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
119 words
In a method of preparing a high molecular weight polyphenoxy ether of an "alkyl phenol", said method comprising contacting a solution of the alkyl phenol with oxygen or an oxygen carrying gas in the presence of an alkaline material selected from the group consisting of alkali metal alkoxides hydroxides and alkali metal carbonates, the improvement which comprises reacting the alkyl phenol in the presence of a catalyst containing mixed oxides of manganese, chromium, and copper supported on activated or precipitated alumina in which the metals are present by weight of the catalyst from about 5 to 25 percent chromium, 3 to 15 percent copper and in which the weight ratio range of manganese to chromium is 1.9-0.9 to 1.
Claim 2
Dependent Claim
119 words
In a method of preparing a high molecular weight polyphenoxy ether of an "alkyl phenol", said method comprising contacting a solution of the alkyl phenol with oxygen or an oxygen carrying gas in the presence of an alkaline material selected from the group consisting of alkali metal alkoxides hydroxides and alkali metal carbonates, the improvement which comprises reacting the alkyl phenol in the presence of a catalyst containing mixed oxides of manganese, chromium, and copper supported on activated or precipitated alumina in which the metals are present by weight of the catalyst from about 5 to 25 percent chromium, 3 to 15 percent copper and in which the weight ratio range of manganese to chromium is 1.9-0.9 to 1.
Claim 3
Dependent Claim
13 words
A method as claimed in claim 1 wherein the alumina is activated alumina.
Claim 4
Dependent Claim
14 words
A method as claimed in claim 1 wherein the alkaline material is potassium hydroxide.
Claim 5
Dependent Claim
23 words
A method as claimed in claim 1 wherein the alkyl group of the alkyl phenol contains from 1 to about 5 carbon atoms.
Claim 6
Dependent Claim
17 words
A method as claimed in claim 1 wherein the alkyl phenol is dissolved in an aromatic hydrocarbon.
Claim 7
Dependent Claim
13 words
A method as claimed in claim 5 wherein the aromatic hydrocarbon is xylene.
Claim 8
Dependent Claim
13 words
A method as claimed in claim 5 wherein the aromatic hydrocarbon is toluene.
Claim 9
Dependent Claim
29 words
A method as claimed in claim 1 wherein the amount of catalyst is equal to from about 10 to 20 percent by weight of alkyl phenol in the solution.
Claim 10
Dependent Claim
29 words
A method as claimed in claim 3 wherein the amount of potassium hydroxide is equal to about 0.8 to 3.2 percent by weight of alkyl phenol in the solution.
Claim 11
Dependent Claim
25 words
A method as claimed in claim 1 wherein the reaction is carried out at a temperature of from about 0° C. to about 50° C.
Claim 12
Dependent Claim
35 words
A method as claimed in claim 9 wherein the amount of potassium hydroxide is equaled to from about 0.8 to 2 percent by weight based on the weight of the alkyl phenol in the solution.
Claim 13
Dependent Claim
15 words
A method as claimed in claim 1 wherein the solution additionally contains an amine compound.
Claim 14
Dependent Claim
12 words
A method as claimed in claim 12 wherein the amine is pyridine.
Claim 15
Dependent Claim
12 words
A method as claimed in claim 12 wherein the amine is piperidine.
Claim 16
Dependent Claim
12 words
A method as claimed in claim 12 wherein the amine is 2,6-dimethylpiperidine.
Claim 17
Dependent Claim
14 words
A method as claimed in claim 12 wherein the amine is an aliphatic amine.
Claim 18
Dependent Claim
12 words
A method as claimed in claim 12 wherein the amine is triethylamine.
References Cited (Backward Citations)
US3549670A
Cited
US3787358A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |