Abstract: Disclosed herein is are compositions comprising ground calcium carbonate having a mean particle size (d50) having a BET surface area greater than commercially available compositions having a comparable mean particle size. Viscous nonaqucous compositions and low viscosity aqueous composition comprising such ground calcium carbonate compositions are also described herein. Also disclosed are methods of grinding calcium carbonate such that the product calcium carbonate has a large mean particle size as well as a large surface area.

Abstract: Disclosed herein is ultra-low residue, high solids, wet “cake” kaolin and ultra-low residue, high solids, wet “cake” calcined kaolin products, produced by use of wet screening/non-drying product isolation, which are useful in the manufacture of top size-sensitive applications.

Abstract: Disclosed herein are inorgano-neutralized calcined kaolin comprising calcined kaolin treated with at least one basic inorganic compound, a composition comprising the inorgano-neutralized calcined, and use of the inorgano-neutralized calcined kaolin in silicone rubber formulation. Further disclosed herein are a method of making the inorgano-neutralized calcined kaolin and a method of making a silicone rubber formulation comprising the inorgano-neutralized calcined kaolin.

Abstract: There is provided a natural alkaline earth metal carbonate having a d50 of about 0.5 ?m or less and a moisture pick up of less than about 0.2 wt %, as well as a process for making the particulate carbonate by grinding. The carbonate may be used in polymer compositions.

Abstract: A composition comprising pulverized hydrous kaolins having a particle size distribution meeting the following ratio (I), ( cumulative ? ? ? mass ? ? ? at ? ? ? 0.5 ? ? ? ? rc ? \ ) ( cumulative ? ? ? mass ? ? ? at ? ? ? 2 ? ? ? ?m ) <= 0.5 , ( I ) and a median particle size (D50) less than or equal to 2.0 ?m. Also disclosed is a method of preparing a composition comprising inventive hydrous kaolins, as well as a method of increasing the dispersion rate of hydrous kaolins. Products, such as inks, paints, polymer products, rubber products, and coatings, using the inventive hydrous kaolins are also disclosed.

Abstract: The present invention relates to a process for preparing a PVC tinted system, such as a paint. After the preparation of the tinted system, at least one of its optical properties can be adjusted by the addition of at least one white pigment that includes a white pigment other than TiO2. The optical properties that can be adjusted include at least one of tint strength, opacity, color, and whiteness.

Abstract: The present invention relates to coarse calcined kaolin slurries having a high solids content. The invention also relates to method of making such slurries. The resulting slurries can have a solids content of at least about 58% by weight wherein at least about 40% by weight of the calcined kaolin particles has a particle size of at least about 1 arm. The slurries can be stabilized where the solids show little settling from suspension. The slurries have many uses, including fillers or extenders in paint and coating compositions for paper or paper board. More generally, the inventive products may be used wherever calcined kaolins are used. The present invention also relates to coarse calcined kaolin slurries having a multimodal particle size distribution and a high solids content.

Abstract: The present invention relates to calcined kaolin having an unusually narrow particle size distribution. The calcined kaolin can have a particle size distribution wherein: (I). The calcined kaolin may be prepared from a hydrous kaolin having a particle size distribution, wherein: (II). The calcined kaolin can be used in many applications, such as paint and coating compositions for paper or paper board, and more generally, the inventive products may be used wherever calcined kaolins are used. ( particle ? ? ? size ? ? ? at ? ? ? a ? ? ? cumulative ? ? ? mass ? ? ? of < 80 ? % ) ( particle ? ? ? size ? ? ? at ? ? ? a ? ? ? cumulative ? ? ? mass ? ? ? of < 20 ? % ) ? 3 ( I ) ( particle ? ? ? size ? ? ? at ? ? ? a ? ? ? cumulative ? ? ? mass ? ? ? of < 80 ? % ) ( particle ? ? ? size ? ? ? at ? ? ? a ? ? ? cumulative ? ? ? mass ? ? ? of < 40 ? % ) ? 3.

Abstract: Disclosed herein is ultra-low residue, high solids, wet “cake” kaolin and ultra-low residue, high solids, wet “cake” calcined kaolin products, produced by use of wet screening/non-drying product isolation, which are useful in the manufacture of top size-sensitive applications.