Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfur containing
Patent
1989-04-03
1991-03-19
Ceperley, Mary E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfur containing
C07C31924
Patent
active
050012690
ABSTRACT:
The invention relates to the production of dialkyl disulphides of the R-SS-R type where R represents an alkyl radical having from 1 to 3 carbon atoms, by oxidation of the corresponding alkyl mercaptan R--SH by sulphur in the presence of a catalyst.
A combination of an alkyl mercantap R'--SH with an alkylene oxide and an alkaline base is used as catalyst, R' representing an alkyl radical having from 6 to 18 carbon atoms.
This catalyst enables a lower dialkyl disulphide of excellent quality to be obtained (absence of amine and coloration).
REFERENCES:
patent: 2237625 (1941-04-01), Olin
patent: 3299146 (1967-01-01), Gillette et al.
Darche Yves
Gongora Henri
Ceperley Mary E.
Societe Nationale Elf Aquitaine (Production)
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