US3718704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methylation process
Assignee: Ashland LLC
•
Filing: 1971-01-08
•
Granted: 1973-02-27
•
Expires: 1991-01-08
Abstract
Abstract A process for methylating an organic compound which comprises contacting the organic compound with a carbon-oxide containing reactant gas in the presence of an oxide of a Group IB, IIB, and/or VIB metal containing catalyst, and at a temperature between about 400* F and about 1200* F.
Inventors
- 👤 D Chapman
- 👤 J Newman
- 👤 W Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:57
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/04; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66; B01J23/68; B01J23/683; B01J23/70; B01J23/76; B01J23/84; B01J23/85; C07C; C07C2/00; C07C2/86; C07C2/862; C07C37/00; C07C37/11; C07C2523/00; C07C2523/06; C07C2523/16; C07C2523/24; C07C2523/26; C07C2523/70; C07C2523/72; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
17 words
The process of claim 1 wherein said temperature is between about 825* F and about 1,200* F.
Claim 2
Dependent Claim
17 words
The process of claim 1 wherein said temperature is between about 850* F and about 875* F.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein said carbon-oxide containing reactant gas also includes hydrogen.
Claim 4
Dependent Claim
27 words
The process of claim 4 wherein the ratio of the hydrogen to the carbon-oxide in said carbon-oxide containing reactant gas is between about 10:1 to about 1:1.
Claim 5
Dependent Claim
14 words
The process of claim 1 wherein said carbon-oxide containing reactant gas contains carbon monoxide.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein said methylatable aromatic hydrocarbon compound is mononuclear.
Claim 7
Dependent Claim
13 words
The process of claim 1 wherein said methylatable aromatic hydrocarbon compound is toluene.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein said methylatable aromatic hydrocarbon compound is ortho xylene.
Claim 9
Dependent Claim
13 words
The process of claim 1 wherein said methylatable aromatic hydrocarbon compound is pseudocumene.
Claim 10
Dependent Claim
28 words
The process of claim 1 wherein the ratio of the carbon-oxide in the carbon-oxide containing gas to the methylatable aromatic compound is between about 1:5 and about 20:1.
Claim 11
Dependent Claim
14 words
The process of claim 1 wherein said catalyst contains a Group IB metal oxide.
Claim 12
Dependent Claim
14 words
The process of claim 12 wherein said Group IB metal oxide is copper oxide.
Claim 13
Dependent Claim
14 words
The process of claim 1 wherein said catalyst contains a Group IIB metal oxide.
Claim 14
Dependent Claim
14 words
The process of claim 14 wherein said Group IIB metal oxide is zinc oxide.
Claim 15
Dependent Claim
14 words
The process of claim 1 wherein said catalyst contains a Group VIB metal oxide.
Claim 16
Dependent Claim
13 words
The process of claim 16 wherein said Group VIB metal oxide is Cr2O3.
Claim 17
Dependent Claim
11 words
The process of claim 1 wherein said catalyst is zinc chromite.
Claim 18
Dependent Claim
14 words
The process of claim 1 wherein said catalyst is a zinc oxide-copper oxide catalyst.
Claim 19
Dependent Claim
13 words
The process of claim 1 wherein said catalyst is a copper oxide-chromia catalyst.
Claim 20
Dependent Claim
99 words
A process for methylating a methylatable hydroxy substituted aromatic compound which comprises feeding hydroxy substituted aromatic compound into a confined zone; in said zone contacting said hydroxy substituted aromatic compound with a carbon oxide-containing reactant gas in the presence of a nonsupported catalyst selected from the group consisting of Group IB metal oxide, Group IIB metal oxide, Group VIB metal oxide, and mixtures thereof, at a temperature between about 400*F. and about 1, 200*F., at a weight hourly space velocity of 0.1-10 and a pressure of 0-15,000 psig., and recovering methylated hydroxy substituted aromatic compound from said confined zone.
Claim 21
Dependent Claim
84 words
A process for methylating phenol which comprises feeding phenol into a confined zone; in said zone contacting said phenol with a carbon oxide-containing reactant gas in the presence of a nonsupported catalyst selected from the group consisting of Group IB metal oxide, Group IIB metal oxide, Group VIB metal oxide, and mixtures thereof, at a temperature between about 400*F. and about 1,200*F., at a weight hourly space velocity of 0.1-10 and a pressure of 0-15,000 psig., and recovering methylated phenol from said confined zone.
Claim 22
Dependent Claim
84 words
A process for methylating quinoline which comprises feeding quinoline into a confined zone; in said zone contacting said quinoline with a carbon oxide-containing reactant gas in the presence of a nonsupported catalyst selected from the group consisting of Group IB metal oxide, Group IIB metal oxide, Group VIB metal oxide, and mixtures thereof, at a temperature between about 400*F. and about 1,200*F., at a weight hourly space velocity of 0.1-10 and a pressure of 0-15,000 psig., and recovering methylated quinoline from said confined zone.
References Cited (Backward Citations)
US2447599A
Cited
US3192278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |