JPS57156438A - Preparation of methyl methacrylate - Google Patents
Preparation of methyl methacrylateInfo
- Publication number
- JPS57156438A JPS57156438A JP4166681A JP4166681A JPS57156438A JP S57156438 A JPS57156438 A JP S57156438A JP 4166681 A JP4166681 A JP 4166681A JP 4166681 A JP4166681 A JP 4166681A JP S57156438 A JPS57156438 A JP S57156438A
- Authority
- JP
- Japan
- Prior art keywords
- methanol
- water
- preparation
- sulfuric acid
- 1mol
- 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.)
- Granted
Links
Abstract
PURPOSE: To improve the yield of the objective product in the preparation of the titled substance by the reaction of methacrylamide sulfate with methanol in the presence of water, suppressing the loss of methanol, by using both water and methanol in high molar ratios.
CONSTITUTION: The objective substance is prepared by reacting (A) 1mol of methacrylamide sulfate obtained from acetone cyanohydrin and sulfuric acid with (B) 4.5W6mol of methanol in the presence of (C) 5W7mol of water. The esterification reaction is carried out at 70W150°C under normal pressureW 10kg/cm2G for 30minW6hr, preferably in the presence of a polymerization inhibitor such as phenothiazine, hydroquinone, etc. The compound (A) is usually prepared by reacting 1mol of acetone cyanohydrin with 1.0W2.0mol of sulfuric acid at 100W180°C for 3W90min.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4166681A JPS57156438A (en) | 1981-03-24 | 1981-03-24 | Preparation of methyl methacrylate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4166681A JPS57156438A (en) | 1981-03-24 | 1981-03-24 | Preparation of methyl methacrylate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57156438A true JPS57156438A (en) | 1982-09-27 |
JPS6236025B2 JPS6236025B2 (en) | 1987-08-05 |
Family
ID=12614704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4166681A Granted JPS57156438A (en) | 1981-03-24 | 1981-03-24 | Preparation of methyl methacrylate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57156438A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0561264A2 (en) * | 1992-03-16 | 1993-09-22 | ELF ATOCHEM ITALIA S.r.l. | Improved process for the production of methylmethacrylate monomer from acetoncyanhydrin |
-
1981
- 1981-03-24 JP JP4166681A patent/JPS57156438A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0561264A2 (en) * | 1992-03-16 | 1993-09-22 | ELF ATOCHEM ITALIA S.r.l. | Improved process for the production of methylmethacrylate monomer from acetoncyanhydrin |
Also Published As
Publication number | Publication date |
---|---|
JPS6236025B2 (en) | 1987-08-05 |
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