초록 ▼

The present invention relates to calcined kaolin products, their production, and use. More specifically, the invention relates to calcined kaolin-containing products having a median diameter particle size of from about 0.5 μm to about 10 μm, and a multimodal particle size distribution defined herein

The present invention relates to calcined kaolin products, their production, and use. More specifically, the invention relates to calcined kaolin-containing products having a median diameter particle size of from about 0.5 μm to about 10 μm, and a multimodal particle size distribution defined herein. The calcined kaolin products of the invention possess a combination of physical properties and applied properties not previously seen together in calcined kaolin pigments. The products according to the invention find use as flattening (or matting) agents, and as fillers or extenders in paint and coating compositions. More generally, the inventive products may be used wherever calcined kaolins are used.

대표청구항 ▼

The present invention relates to calcined kaolin products, their production, and use. More specifically, the invention relates to calcined kaolin-containing products having a median diameter particle size of from about 0.5 μm to about 10 μm, and a multimodal particle size distribution defined herein

The present invention relates to calcined kaolin products, their production, and use. More specifically, the invention relates to calcined kaolin-containing products having a median diameter particle size of from about 0.5 μm to about 10 μm, and a multimodal particle size distribution defined herein. The calcined kaolin products of the invention possess a combination of physical properties and applied properties not previously seen together in calcined kaolin pigments. The products according to the invention find use as flattening (or matting) agents, and as fillers or extenders in paint and coating compositions. More generally, the inventive products may be used wherever calcined kaolins are used. into said tube; said column isolating accessory has an auxiliary carrier gas inlet in fluid communication with the outlet of said tube, by which auxiliary carrier gas inlet carrier gas is introduced into said housing to isolate chromatographic columns coupled to said accessory; and the pressures of the main carrier gas inlet and the auxiliary carrier gas inlet are regulatable to introduce carrier gas into the inlet of said tube and isolate the column while the sample mixture is introduced into said housing, while the sample mixture flows through said adsorbent and out said vent, and while additional carrier gas dry purges said adsorbent and flows out said vent, and are further regulatable to introduce carrier gas into said tube and permit flow into the column while the adsorbed analytes are desorbed into the column. 31. An analyte pre-concentrator for use with a chromatographic column coupled thereto, comprising: a housing having a sample mixture inlet, a main carrier gas inlet, and a vent; a tube disposed inside said housing, said tube having an inlet and an outlet, wherein the inner diameter of the outlet is smaller than the inner diameter of the inlet; an adsorbent disposed inside said tube; and a column isolating accessory coupled to said housing having an auxiliary carrier gas inlet; wherein the sample mixture inlet introd