Modified sulphur and product comprising modified sulphur as...

Details Modified sulphur and product comprising modified sulphur as... Modified sulphur and product comprising modified sulphur as...

C - Chemistry, Metallurgy

04

B

C04B 28/36 (2006.01) C04B 24/00 (2006.01)

Patent

CA 2612473

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.

L'invention porte sur du soufre modifié obtenu en mélangeant du soufre élémentaire fondu à un ou plusieurs modificateurs oléfiniques du soufre, au moins 50 % de ces modificateurs étant du 5-éthylidène-2-norbornène et/ou du 5-vinyl-2-norbornène et la quantité totale de ces modificateurs étant de 0,1 à 20 % en poids du poids du soufre. L'invention porte également un produit comprenant comme liant ledit soufre modifié, et préparé en mélangeant ledit soufre modifié, une charge et/ou un agrégat et facultativement du soufre élémentaire à une température supérieure au point de fusion du soufre, puis en solidifiant le mélange en le refroidissant à une température inférieure au point de fusion du soufre.

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