Pitch granules which are solid at room temperature
AssigneeTotal Marketing Services
InventorJean-Pierre Mesnil
Life of this patent
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Abstract
Pitch granules including a core made up of a first composition including at least one pitch, the composition having a penetrability at 25° C. of 0 to 45 1/10 mm, a ring-and-ball softening temperature (TBA) of 55° C. to 175° C., understanding the penetrability as measured according to standard EN 1426 and the TBA as measured according to standard EN 1427, and a layer encapsulating at least one portion of the surface of the core, the layer being made up of a coating composition including at least one anti-caking agent.
Claims19
Pitch pellets comprising:
- a core constituted of a first composition comprising at least one pitch, said composition having a penetrability at 25° C. ranging from 1 to 45 1/10 mm and a ring and ball softening point (RBSP) ranging from 55° C. to 175° C., wherein the penetrability is measured according to the standard EN 1426 and that the RBSP is measured according to the standard EN 1427, and
- a layer coating at least part of the surface of the core, said layer being constituted of a coating composition comprising at least one anticaking agent chosen from pyrogenic silicas, and mixtures thereof, wherein the pyrogenic silicas have a specific surface area of between 120 and 280 m2/g.
The pitch pellets as claimed 8, wherein the gelling compound is selected from the group consisting of gelatin, agar-agar, alginates, cellulose derivatives, starches, modified starches and gellan gums.
Dependencies are inferred from the claim text.