Structure precipitated silicates and silicas, production and use in ink jet printing
AssigneeDegussa AG
InventorsMichael S. Darsillo, Sturgis Gregg Allen
Life of this patent
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Abstract
A method for preparing precipitated silicates and silicas having good high shear rheology in high solids aqueous slurries. Destructuring of aluminum silicate and silica via dry milling results in decreasing DBP oil absorption. The destructured materials are useful for ink jet coating formulations.
Claims15
A method of making an ink jet coating formulation comprising dry milling a precipitated silicate or silica particulate in a media mill for a sufficient period of time to achieve a 30 to 60% reduction in structure as measured by the decrease in DBP number to form a dry milled product of reduced DBP number, dispersing said product into water to obtain aqueous slurry, and mixing said slurry with a binder for producing the desired ink jet coating.
An ink jet coating formulation comprising:
- a) a binder vehicle for said formulation
- b) a destructured silicate or silica having a DBP number that is 30 to 60% lower than the DBP under of the un-destructured silicate or silicas.
A method of making an ink jet coating formulation comprising dry milling a precipitated silicate or silica particulate in a media mill for a sufficient period of time to achieve a 30 to 50% reduction in structure as measured by the decrease in DBP number to form a dry milled product of reduced DBP number, and dispersing said product into water to obtain aqueous slurry.
Dependencies are inferred from the claim text.