Sulphur cement products
View Patent ↗A sulphur cement product comprising sulphur, filler, sand having a surface area of greater than 0.5 m 2 /g, and an organosilane having at least one amino functional group is disclosed. Further, a process for the preparation of such cement sulphur product is disclosed.
1. A sulphur cement product comprising sulphur, filler, sand having a surface area of greater than 0.5 m 2 /g, and an organosilane having at least one amino functional group.
2. A sulphur cement product according to claim 1 , wherein the amount of organosilane having at least one amino functional group in the sulphur cement product is from 0.05 to 2 wt %, based upon the weight of the sand having a surface area of greater than 0.5 m 2 /g.
3. A process for the preparation of a sulphur cement product comprising the steps of:
(a) admixing sulphur, filler, sand having a surface area of greater than 0.5 m 2 /g, and an organosilane having at least one amino functional group; and
(b) solidifying the molten sulphur cement product.
4. A process for the preparation of a sulphur cement product according to claim 3 , wherein step (a) a sulphur cement pre-composition comprising sulphur and an organosilane having at least one amino functional group is mixed with filler and sand having a surface area of greater than 0.5 m 2 /g.
5. A process for the preparation of a sulphur cement product according to claim 4 , wherein step (a) a wax-based pre-composition comprising wax and an organosilane having at least one amino functional group is mixed with sulphur, filler and sand having a surface area of greater than 0.5 m 2 /g.
6. A process for the preparation of a sulphur cement product according to claim 5 , wherein step (a) the wax-based pre-composition additionally comprises a mineral adsorbate.