Title:
【発明の名称】パラフィンの抽出法
Document Type and Number:
Japanese Patent JP2540046
Kind Code:
B2
Abstract:
In preparing alkanesulphonic acids by sulphoxidation of n-paraffins containing between 12 and 18 carbon atoms, using UV radiation to initiate the reaction (light-water process), a mixture is obtained which spontaneously allows a substantial part of the unconverted n-paraffins to separate from a mixture containing the alkanesulphonic acids together with water, sulphuric acid and n-paraffins. The aforesaid mixture is fed with one or more alcohols having four or less than four carbon atoms, preferably isopropanol, to form a two-phase mixture. The two-phase mixture is extracted with supercritical CO2, which extracts the n-paraffins, these being recycled to the sulphoxidation process. The paraffin-free product is suitable for preparing alkanesulphonates of the desired type by neutralisation with suitable bases.
Inventors:
KOJIIMO FURANKO
JERARUDO KARURITSURO
RUCHIIO FUATSUJAN
JERARUDO KARURITSURO
RUCHIIO FUATSUJAN
Application Number:
JP18243587A
Publication Date:
October 02, 1996
Filing Date:
July 23, 1987
Export Citation:
Assignee:
ENIRICHERUCHE SPA
ENIIKEMU AUGUSUTA SPA
ENIIKEMU AUGUSUTA SPA
International Classes:
C07B63/00; C07C1/00; C07C7/00; C07C7/10; C07C9/00; C07C9/14; C07C9/15; C07C7/148; C07C9/22; C07C39/04; C07C67/00; C07C301/00; C07C303/04; C07C303/14; C07C303/28; C07C303/42; C07C303/44; C07C309/02; C07C309/03; C07C309/04; C07D303/44; C10G21/06; C10G21/08; C10G73/02; C10G73/06; C10G73/38; C11D3/34; C01B; C07C; C08F; C10G; (IPC1-7): C07C9/00; C07B63/00; C07C7/10; C07C9/14; C07C9/22; C07C39/04; C07C303/44; C10G73/06; C10G73/38
Domestic Patent References:
| JP62240630A | ||||
| JP62201828A | ||||
| JP62158223A | ||||
| JP59148757A | ||||
| JP6038356A |
Attorney, Agent or Firm:
Kimura Masami