Patent EP0032974A1 successfully refreshed from Google Patents.
EP0032974A1
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EP
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A method for the synthesis of 2,3,6-trimethylphenol
Assignee: ConocoPhillips Co
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Filing: 1980-10-06
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Granted: —
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Expires: 2000-10-06
Abstract
Abstract Meta-substituted phenolic materials are used in the production of 2,3,6-trimethylphenol by methylating the phenolic materials under specific conditions of temperature, pressure in the presence of a new catalyst in order to obtain 2,3,6-trimethylphenol in high selectivities. The new catalyst contains amorphous titanium components.
Inventors
- 👤 Bruce Eugene Leach
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 06:11
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/02; B01J27/053; C; C07; C07C; C07C37/00; C07C37/11; C07C37/16
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
71 words
A method for the synthesis of 2,3,6-trimethylphenol comprising a) contacting meta-substituted phenolic materials with methanol in a vapor phase, b) at a temperature of from about 400°C to about 500°C; c) at a pressure of from about atmospheric to about 10 atmospheres, and d) at a methanol/phenolic mole ratio of from about 1 to about 10; wherein the catalyst is a magnesium oxide catalyst promoted with amorphous titanium and sulfate ions.
Claim 2
Independent Claim
71 words
A method for the synthesis of 2,3,6-trimethylphenol comprising a) contacting meta-substituted phenolic materials with methanol in a vapor phase, b) at a temperature of from about 400°C to about 500°C; c) at a pressure of from about atmospheric to about 10 atmospheres, and d) at a methanol/phenolic mole ratio of from about 1 to about 10; wherein the catalyst is a magnesium oxide catalyst promoted with amorphous titanium and sulfate ions.
Claim 3
Dependent Claim
18 words
A method as described in claim 1 wherein the reaction is carried out in a continuous flow reactor.
Claim 4
Dependent Claim
22 words
A method as described in claim 2 wherein the reaction is carried out at an LHSV of about .1 to about 10.
Claim 5
Dependent Claim
26 words
A method as described in claim 3 wherein the feed mixture contains water in an amount of from about 1 to about 15 percent by weight.
Claim 6
Dependent Claim
51 words
A method as described in claim 4 when the catalyst component ratio of from about 2 to about 10 weight percent amorphous titanium, about 85 to about 98% by weight of magnesium oxide, and from about 2 to about 10% by weight sulfate based on the total weight of the catalyst.
Claim 7
Dependent Claim
30 words
A method as described in claim 5 wherein in addition from about 1 to about 5% by weight of silica is added based on the weight of the final catalyst.
Claim 8
Dependent Claim
29 words
A method as described in claim 3 wherein in addition from about 1 to about 3% graphite is added based by weight upon the weight of the final catalyst.
Claim 9
Dependent Claim
45 words
A method as described in claim 4 wherein the reaction is carried out at a temperature of from about 420 to about 480°C, a liquid hourly space velocity of from about .5 to 2, and a pressure of from about atmospheric to about 5 atmospheres.
Claim 10
Dependent Claim
17 words
A method as described in claim 8 wherein the feed mixture is primarily meta-cresol, 2,3-xylenol and 2,5-xylenol.
Claim 11
Dependent Claim
20 words
A method as described in claim 9 wherein the materials other than 2,3,6 are recovered and reused as a feedstock.
References Cited (Backward Citations)
GB1428643A
Cited
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