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    • 3. 发明申请
    • MINERAL DISPERSANTS AND METHODS FOR PREPARING MINERAL SLURRIES USING THE SAME
    • 矿物分散剂和使用其制备矿物浆料的方法
    • WO2009012202A1
    • 2009-01-22
    • PCT/US2008/069937
    • 2008-07-14
    • KEMIRA OYJLYNCH, Thomas, J.
    • LYNCH, Thomas, J.
    • C04B33/00
    • C09C1/021C01P2004/51C01P2004/62C01P2006/22C09C3/10
    • A mineral slurry comprises mineral particles in an amount equal to or greater than about 60 percent by total weight of the slurry, wherein 85 percent of the mineral particles have an average particle size equal to or less than 2 micrometers; a polyelectrolyte dispersant derived from an acrylate polymer formed by reversible addition-fragmentation chain transfer polymerization, wherein the polyelectrolyte dispersant comprises endgroups comprising thio-containing residues derived from a trithiocarbonate chain transfer agent, wherein the polyelectrolyte dispersant is in an amount less than about 35 pounds of the dispersant per ton of dry mineral particles, and wherein the polyelectrolyte dispersant has a molecular weight of 3000 to 10,000 Daltons and a polydispersity of at least 1.0 and less than 1.5; and the remainder water.
    • 矿物浆料包含等于或大于浆料总重量的约60%的矿物颗粒,其中85%的矿物颗粒具有等于或小于2微米的平均粒度; 衍生自通过可逆加成 - 断裂链转移聚合形成的丙烯酸酯聚合物的聚电解质分散剂,其中所述聚电解质分散剂包含包含衍生自三硫代碳酸酯链转移剂的含硫残基的端基,其中所述聚电解质分散剂的量小于约35磅 的分散剂,其中所述聚电解质分散剂的分子量为3000至10,000道尔顿,多分散性为至少1.0且小于1.5; 剩余的水。