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1.Process for drying methacrylic acid by extraction and azeotropic distillation 失效
Title translation: 通过萃取和共沸蒸馏干燥甲基丙烯酸的方法公开(公告)号:US3414485A
公开(公告)日:1968-12-03
申请号:US63923667
申请日:1967-05-17
Applicant: ESCAMBIA CHEM CORP
Inventor: SPEED GEORGE B H
CPC classification number: C07C51/252 , C07C51/48 , Y10S203/03 , Y10S203/22 , C07C57/04