METHOD OF PRODUCING POLYSULPHIDE Russian patent published in 2016 - IPC C08G75/14 

FIELD: chemistry.

SUBSTANCE: invention relates to method for producing polysulphide of formula (I) HS-(CH₂)_n-O-(CH₂)_m-O-(CH₂)_p-[S-S-CH₂)_n-O-(CH₂)_m-O-(CH₂)_p]_q-SH, where m is integer ranging from 1 to 4, n and r are integers in ranges of 1 to 10, q is integer in range of 1 to 60. Method for producing polysulphide consists in oxidation of simple bis-mercapto diether compound of formula (II) HS-(CH₂)_n-O-(CH₂)_m-O-(CH₂)_p-SH by elemental sulphur in presence of base and proton solvent.

EFFECT: invention increases selectivity of oxidation relative linear disulphides.

10 cl, 5 ex