Title:
MANUFACTURE OF METHACRYLIC ACID FROM ISOBUTYL ALDEHYDE
Document Type and Number:
Japanese Patent JPS5879948
Kind Code:
A
Abstract:
To produce methacrylic acid, firstly, isobutyraldehyde is acetalized. The resultant acetal is cleaved into the isobutenyl ether and alcohol. The isobutenyl ether is oxidized with molecular oxygen or an oxygen-containing gaseous mixture in the presence of an alkaline solution at temperatures of 30 DEG -70 DEG C. to obtain the epoxide. This epoxide is hydrolyzed to the alpha -hydroxyisobutyraldehyde. The latter is then oxidized with concentrated or fuming nitric acid at temperatures of 20 DEG -110 DEG C. to produce alpha -hydroxyisobutyric acid, and methacrylic acid is obtained therefrom by splitting off water.
Inventors:
RUUDORUFU BUROTSUKUHAUSU
HANSUUYURUGEN FURANKE
HANSUUYURUGEN FURANKE
Application Number:
JP18687882A
Publication Date:
May 13, 1983
Filing Date:
October 26, 1982
Export Citation:
Assignee:
HUELS CHEMISCHE WERKE AG
International Classes:
C07C41/28; C07C41/56; C07C45/51; C07C45/58; C07C51/00; C07C51/27; C07C57/04; C07C57/05; C07C57/065; C07C67/00; C07D303/48; (IPC1-7): C07C51/00; C07C57/04
Attorney, Agent or Firm:
Ezaki Mitsuyoshi
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