Title:
PRODUCTION OF DISULFIDES
Document Type and Number:
Japanese Patent JP3787791
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a high-quality disulfide in high yield useful as a raw material for various synthetic chemicals such as a surfactant, a dye, a medicine, an agrochemical, etc., including a raw material for various additives required for producing rubber, a plastics, etc.
SOLUTION: This disulfide as the objective compound, such as dicyclohexyl disulfide of the formula is obtained by reacting a monochloro-substituted compound (e.g. chlorocyclohexane) with an alkali metal sulfide (e.g. sodium sulfide) or a mixture containing it in the presence of a solvent (e.g. a 1-3C aliphatic alcohol such as methanol) and an alkali metal hydroxide (e.g. sodium hydroxide) at 72-110°C inner temperature under normal temperature to 1.9kg/cm2G. The amounts of the reagents used are preferably 0.2-0.4mol of the alkali metal hydroxide and 0.8-3.0mol of the solvent based on 1mol of the monochloro- substituted compound.
Inventors:
Hiroshi Miyaji
Ishihara Yasushi
Ishihara Yasushi
Application Number:
JP19617295A
Publication Date:
June 21, 2006
Filing Date:
July 07, 1995
Export Citation:
Assignee:
Toray Fine Chemicals Co., Ltd.
International Classes:
B01J23/04; C07C319/24; C07B61/00; C07C321/22; C07C321/24; (IPC1-7): C07C321/22; B01J23/04; C07C319/24; C07C321/24; //C07B61/00
Domestic Patent References:
| JP49127945A | ||||
| JP59122456A |
Attorney, Agent or Firm:
Tomonori Iwami