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公开(公告)号：US06294143B1
公开(公告)日：2001-09-25
申请号：US09047136
申请日：1998-03-24
IPC分类号： C01F1118
CPC分类号： C01F11/183
摘要： A product and a process for the preparation of discrete calcium carbonate particles that result from preparing an aqueous calcium carbonate slurry containing carbohydrates, carbonating the aqueous calcium carbonate slurry while maintaining the selected starting carbonation temperature. The product of the present invention is discrete particles of calcium carbonate which are especially useful in paints, plastics, paper coating, paper filling, and because of the purity level of the calcium carbonate particle may be used in cosmetics, pharmaceuticals and food applications.
摘要翻译： 用于制备离散碳酸钙颗粒的产物和方法，其由制备含碳水化合物的碳酸钙水泥浆形成，在保持所选择的起始碳酸化温度的同时碳酸化碳酸钙水泥浆料。 本发明的产品是分散的碳酸钙颗粒，其特别用于油漆，塑料，纸张涂布，纸张填充，并且由于碳酸钙颗粒的纯度可用于化妆品，药物和食品应用中。
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公开(公告)号：US5741471A
公开(公告)日：1998-04-21
申请号：US567754
申请日：1995-12-05
CPC分类号： C01F11/183 , C01F11/18 , C09C1/021 , C01P2004/11 , C01P2004/40 , C01P2006/12
摘要： A process for the precipitation of discrete prismatic calcium carbonate particles by carbonation of aqueous calcium hydroxide containing a saccharide or polysaccharide or a saccaride or polysaccharide and a metal ion at temperatures of from about 8.degree. C. to about 64.degree. C. is disclosed. The resulting product has specific surface areas between about 10 m.sup.2 /g and about 120 m.sup.2 /g and is useful in paints, plastics, paper coating, paper filling, and pharmaceutical applications.
摘要翻译： 公开了通过在约8℃至约64℃的温度下碳酸化含有糖或多糖，鳌合剂或多糖和金属离子的氢氧化钙水溶液沉淀离子棱形碳酸钙颗粒的方法。 所得产品具有约10m 2 / g至约120m 2 / g之间的比表面积，并且可用于油漆，塑料，纸张涂布，纸张填充和药物应用。
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