Process for the preparation of organic disulphides and polysulph

Details Process for the preparation of organic disulphides and polysulph Process for the preparation of organic disulphides and polysulph

1996-12-11

1998-07-28

Geist, Gary

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfur containing

568 25, 568 26, C07C31922

Patent

active

057865116

ABSTRACT:
The preparation of organic disulphides and polysulphides by reaction of sulphur with a mercaptan or with a polysulphide of lower sulphur order in order to convert it into polysulphide of higher order, or alternatively by reaction of a mercaptan with an organic polysulphide of high sulphur order in order to convert it into polysulphide of lower sulphur order, in the presence of a catalyst in the form of a resin with a basic function, characterized in that the resin is based on polystyrene-divinylbenzene (PS-DVB) functionalized with primary amino groups and having the general formula (I): ##STR1## being the PS-DVB resin support, L being a linear organic radical which is as long as or longer than the methylene radical (--CH.sub.2 --).

REFERENCES:
patent: 3277180 (1966-10-01), Biensan
patent: 3308166 (1967-03-01), Biensan
patent: 5068445 (1991-11-01), Arretz

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