公开(公告)号：US3666632A

公开(公告)日：1972-05-30

申请号：US3666632D

申请日：1969-10-02

Applicant: ASAHI CHEMICAL IND

Inventor： HONDA MAKOTO ,  KUBOTA YASUHIRO ,  AOSHIMA ATSUSHI ,  HISAMATSU TOKUICHI ,  UEDA MINORU

IPC: C07C51/46 ,  C07C57/07 ,  B01D3/36 ,  C07C57/04

CPC classification number: C07C51/46 ,  Y10S203/22 ,  C07C57/04 ,  C07C53/08

Abstract: IN THE PROCESS FOR SEPARATING ACRYLIC ACID FROM AQUEOUS SOLUTION CONTAINING ACRYLIC ACID AND ACETIC ACID, THE IMPROVEMENT WHHICH COMPRISES SUBJECTING THE SAID AQUEOUS SOLUTION TO AN AZEOTROPIC DISTILLATION IN THE PRESENCE OF AT LEAST ONE MEMBER SELECTED FROM THE GROUP CONSISTING OF BUTYL ACETATE, ETHYL BUTYRATE, ETHYL ISOBUTYRATE, ETHYL METHACRYLATE, PROPYL ACRYLATE AND PROPYL PROPIONATE AS AN ENTRAINER, DISTILLING OFF ACETIC ACID AND WATER

FROM THE COLUMN HEAD AND SEPARATING ACRYLIC ACID FROM THE COLUMN BOTTOM.

公开(公告)号：US3446840A

公开(公告)日：1969-05-27

申请号：US3446840D

申请日：1966-02-24

Applicant: ASAHI CHEMICAL IND

Inventor： KATO TSUNEYUKI ,  AOSHIMA ATSUSHI ,  KUBOTA YASUHIRO ,  MATSUMURA KENJI

IPC: B01J27/192 ,  C07C45/35 ,  C07C51/25 ,  C07C57/04 ,  B01J11/82 ,  C07C51/20

CPC classification number: C07C45/35 ,  B01J27/192 ,  C07C51/252 ,  C07C47/22 ,  C07C57/04