GB1122546A - Process for preparing methyl methacrylate - Google Patents
Process for preparing methyl methacrylateInfo
- Publication number
- GB1122546A GB1122546A GB45476/66A GB4547666A GB1122546A GB 1122546 A GB1122546 A GB 1122546A GB 45476/66 A GB45476/66 A GB 45476/66A GB 4547666 A GB4547666 A GB 4547666A GB 1122546 A GB1122546 A GB 1122546A
- Authority
- GB
- United Kingdom
- Prior art keywords
- methyl methacrylate
- methacrylamide
- water
- sulphuric acid
- sulphate
- 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
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/18—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group
- C07C67/20—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from amides or lactams
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Methyl methacrylate is prepared by reacting a mixture of methacrylamide sulphate and sulphonic acid with methanol at 105 DEG to 130 DEG C. and at above atmospheric pressure, the mixture if desired containing up to 0.2 mol. of water per mol. of methacrylamide sulphate. Crude methyl methacrylate is recovered by dilution with water, at least 2 mols of water per mol of methacrylamide sulphate, followed by a phase separation, and purification by distillation. The methacrylamide sulphate can be prepared either by mixing methacrylamide and sulphuric acid, by the reaction of acetone cyanhydrin with sulphuric acid, or by the reaction of methacrylonitrile, water and sulphuric acid, and examples are described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DER0041824 | 1965-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1122546A true GB1122546A (en) | 1968-08-07 |
Family
ID=7406459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB45476/66A Expired GB1122546A (en) | 1965-10-23 | 1966-10-11 | Process for preparing methyl methacrylate |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE684333A (en) |
| DE (1) | DE1468939A1 (en) |
| FR (1) | FR1508142A (en) |
| GB (1) | GB1122546A (en) |
| NL (1) | NL6614956A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768165B2 (en) * | 1985-05-06 | 1995-07-26 | ロ−ム アンド ハ−ス コンパニ− | Improved process using nitriles for the production of unsaturated compounds |
| DE102006058251A1 (en) * | 2006-12-08 | 2008-06-12 | Evonik Röhm Gmbh | Process and apparatus for the preparation of alkyl methacrylates |
-
1965
- 1965-10-23 DE DE19651468939 patent/DE1468939A1/en active Pending
-
1966
- 1966-07-19 BE BE684333D patent/BE684333A/xx unknown
- 1966-09-27 FR FR77760A patent/FR1508142A/en not_active Expired
- 1966-10-11 GB GB45476/66A patent/GB1122546A/en not_active Expired
- 1966-10-21 NL NL6614956A patent/NL6614956A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR1508142A (en) | 1968-01-05 |
| BE684333A (en) | 1967-01-03 |
| NL6614956A (en) | 1967-04-24 |
| DE1468939A1 (en) | 1968-12-19 |
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