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US 5,178,948 AGranted
Method and apparatus for production of rubber dispersible pellets
AssigneeJ. M. Huber Corporation
InventorThomas M. Haller
Life of this patent
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Abstract
A pelletized form of silica which is sufficiently dust free and highly dispersible in rubber formulations. The pelletized silica is produced by a process which involves pelletizing a mixture of silica and water in an inclined mixer and drying the pelletized product in a fluidized bed dryer.
Claims3
A silica product which is highly dispersible in rubber formulations comprising pellets of amorphous silica having a density between about 0.25 and about 0.40 g/cc said silica product containing between about 0.2% and 0.8% particles which are less than 200 mesh.
Dependencies are inferred from the claim text.