GB1238353A - - Google Patents
Info
- Publication number
- GB1238353A GB1238353A GB1238353DA GB1238353A GB 1238353 A GB1238353 A GB 1238353A GB 1238353D A GB1238353D A GB 1238353DA GB 1238353 A GB1238353 A GB 1238353A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenol
- methyl
- transmethylation
- weight
- substituents
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/48—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by exchange of hydrocarbon groups, which may be substituted, from the same of other compounds, e.g. transalkylation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,238,353. Transmethylation of methyl-substituted phenols. CONSOLIDATION COAL CO. 9 Oct., 1968, No. 47767/68. Heading C2C. A process for the catalytic transmethylation of methyl-substituted phenols comprises heating a mixture of a first phenolic material comprising at least one first phenol containing at least two methyl groups and a second phenolic material comprising a second phenol which may be phenol itself or cresols, said first phenol and said second phenol containing no substituents other than methyl substituents, in the vapour phase at a temperature between 350‹ and 500‹ C. in the presence of a catalyst consisting essentially of 75 to 100% by weight of alumina and 0 to 25% by weight of silica, thereby effecting transmethylation from said first phenol to said second phenol.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4776768 | 1968-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1238353A true GB1238353A (en) | 1971-07-07 |
Family
ID=10446182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1238353D Expired GB1238353A (en) | 1968-10-09 | 1968-10-09 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1238353A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11485694B2 (en) | 2019-02-04 | 2022-11-01 | China Petroleum & Chemical Corporation | Dealklylation and transalkylation of mixed phenols to make cresols |
| US11767280B2 (en) | 2019-02-04 | 2023-09-26 | China Petroleum & Chemical Corporation | Process for making phenol and xylenes |
-
1968
- 1968-10-09 GB GB1238353D patent/GB1238353A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11485694B2 (en) | 2019-02-04 | 2022-11-01 | China Petroleum & Chemical Corporation | Dealklylation and transalkylation of mixed phenols to make cresols |
| US11767280B2 (en) | 2019-02-04 | 2023-09-26 | China Petroleum & Chemical Corporation | Process for making phenol and xylenes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 414F | Notice of opposition given (sect. 14/1949) | ||
| 414A | Case decided by the comptroller ** specification amended (sect. 14/1949) | ||
| SPA | Amended specification published | ||
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |