Process for preparing methacryl amidemethacrylic acid mixtures
Patent
US-3558695-A
Inventor
SUDO MAKOTO
YAMAMOTO YASUMASA
KOBAYASHI MASAO
YAMASAKI KENICHI
IKEDA MINORU
Assignee
MITSUBISHI RAYON CO
Country
United States
Dates
- Priority:1966/06/29
- Grant:1971/01/26
Description
This web page summarizes information in PubChem about patent US-3558695-A. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.
A PROCESS FOR PREPARING METHACRYLIC ACID AND DERIVATIVES THEREOF BY MIXING ACETONE CYANHYDRIN WITH CONCENTRATED SULFURIC ACID AND THEN SUBJECTING THE MIXTURE TO DEHYDRATION IN WHICH THE MIXING AND DEHYDRATION OPERATIONS ARE EFFECTED AT 2 OR MORE STAGES, WHEREIN THE FIRST STAGE, THE MIXING OPERATION IS EFFECTED USING A SULFURIC ACID TO ACETONE CYANHYDRIN MOLAR RATIO OF AT LEAST 1.5:1; IN THE SUBSEQUENT STAGE, THE MIXING OPERATION IS EFFECTED WHILE SO CONTROLLING SAID MOLAR RATIO AS TO GRADUALLY BECOME CLOSER TO 1:1; AND IN THE FINAL STAGE, THE MIXING OPERATION IS EFFECTED WHILE CONTROLLING SAID MOLAR RATIO TO AT LEAST 1:1.
1966/06/29
1967/06/23
1971/01/26
1971/01/26
SUDO MAKOTO
YAMAMOTO YASUMASA
KOBAYASHI MASAO
YAMASAKI KENICHI
IKEDA MINORU
MITSUBISHI RAYON CO
United States
C07C231/14 (inventive)
C07C67/00 (inventive)
C07C231/00 (inventive, first)
C07C233/09 (inventive)
C07C69/54 (inventive)
C07C57/04 (inventive)
C07C233/09 (inventive, first)
- WO-03016263-A1 (A) (ISR)
- CN-103130672-A (A) (SEA)
- CN-103130672-B (A) (SEA,SEA)
- US-9637574-B2 (APP)
- CN-111635332-A (A) (SEA)
- US-3558695-A
- JP-S6121603-B2
- DE-2217003-A1
- JP-S57200420-A
- US-3403115-A
- CN-103570760-A
- CH-700545-A2
- EP-0410167-B1
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- FR-2495137-A1
- DE-3049543-A1
- US-2818442-A
- JP-H10120643-A
- CN-112742062-B
- SU-267511-A1
- SU-825510-A1
- Google PatentsLICENSE"Google Patents Research Data" by Google, based on data provided by IFI CLAIMS Patent Services and OntoChem, is licensed under a Creative Commons Attribution 4.0 International License.https://creativecommons.org/licenses/by/4.0/legalcode
- PubChem
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