Title:
【発明の名称】イオノン、特にβ―イオノンを調製するための改善された方法
Document Type and Number:
Japanese Patent JP2000510130
Kind Code:
A
Abstract:
PCT No. PCT/EP97/02249 Sec. 371 Date Nov. 13, 1998 Sec. 102(e) Date Nov. 13, 1998 PCT Filed May 2, 1997 PCT Pub. No. WO97/43254 PCT Pub. Date Nov. 20, 1997Process for the continuous preparation of alpha - and/or beta -ionone or homologous compounds using concentrated sulfuric acid at temperatures from 20 to 90 DEG C., in the presence of organic solvents or diluents with cooling and by subsequent termination of the reaction by hydrolysis of the reaction mixture with water or dilute sulfuric acid, wherein both the cyclization of pseudoionones and the subsequent hydrolysis of the reaction mixture are carried out in a virtually adiabatic reaction in one or more reaction mixing pump(s) which are connected in series and each of which consists essentially of a rotationally symmetrical mixing chamber formed from a peripheral wall and two end walls and of a mixing rotor made of material inert to sulfuric acid and with rotational drive, where the mixing chamber has at least one inlet opening for each component and one outlet opening for the reaction mixture, and annular channels in fluid connection to one another in the end walls, and wherein the heat of the two reactions is in each case partly or wholly removed with the aid of a downstream heat exchanger.
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Inventors:
Udo Royde
Ulrich Helcher
Dietmar Weller
Manfred Stretzel
Ulrich Helcher
Dietmar Weller
Manfred Stretzel
Application Number:
JP54045097A
Publication Date:
August 08, 2000
Filing Date:
May 02, 1997
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
C07C49/21; C07C403/14; C07C403/16; C07B37/10; C07C; (IPC1-7): C07C403/16
Attorney, Agent or Firm:
Toshio Yano (3 outside)