Dispersions of Inorganic Particulates
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United States of America Patent
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Issued Date -
Nov 20, 2008
app pub date -
Mar 24, 2006
filing date -
Mar 24, 2005
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Abandoned
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Abstract
A dispersion of a particulate inorganic material comprises a non-aqueous liquid medium containing a particulate inorganic material dispersed therein and an effective amount of one or more dispersing agent which serves to maintain the particulate inorganic material in dispersion in the non-aqueous medium, wherein the particulate inorganic material has an average particle size (d.sub.50) less than about 9 .mu.m, the particulate inorganic material is present in the non-aqueous medium in an amount greater than about 70% by weight of the dispersion and the viscosity of the dispersion is less than about 150 Pas measured at room temperature on a Bohlin rheometer using a 20 mm cone/plate at a shear rate of 1/sec. A substantially dry particulate inorganic material surface treated with the dispersing agent and optionally one or more hydrophobising surface treatment agent, and capable of forming the said dispersion, is a further feature of the invention.
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