METHOD OF OBTAINING MODIFIED SULPHUR Russian patent published in 2015 - IPC C08L95/00 C04B26/26 C08K3/06 C01B17/00 

FIELD: chemistry.

SUBSTANCE: invention relates to field of producing compositions, which include modified sulphur, which can be applied for production of building materials - sulphuric concretes and sulphur-asphalt concretes, applied in different fields of building, including transport, hydrotechnical, hydromeliorative, etc. Method of obtaining modified sulphur consists in the fact, that melted sulphur is supplied into reactor at temperature 120-135°C, after that, salts of ammonium and/or potassium are introduced into reactor in quantity from 0.001 to 0.005 wt % of sulphur weight, mixed for 5-10 minutes, after which 5-ethylene-2-norbornen is introduced in quantity from 0.08 to 0.1 wt % of sulphur weight with further mixing for 20-50 minutes.

EFFECT: stabilisation of product takes place, reaction of modification becomes non-reversible, and destruction is absent.

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