MODIFIED SULPHUR AND PRODUCT COMPRISING MODIFIED SULPHUR AS BINDER

摘要

The invention provides modified sulphur prepared by admixing molten elemental sulphur with one or more olefinic sulphur modifiers, wherein at least 50 wt% of the olefinic sulphur modifiers is 5-ethylidene-2-norbornene and/or 5-vinyl-2-norbornene and wherein the total amount of olefinic sulphur modifiers is in the range of from 0.1 to 20 wt% based on the weight of sulphur. The invention further provides a product comprising such modified sulphur as binder which is prepared by admixing such modified sulphur, a filler and/or aggregate, and optionally elemental sulphur at a temperature above the melting temperature of sulphur and solidifying the mixture obtained by cooling the mixture to a temperature below the melting temperature of sulphur.