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    TiO2 compounds obtained from a high silica content ore
    1.
    发明授权
    TiO2 compounds obtained from a high silica content ore 有权
    从高二氧化硅含量矿石中获得的TiO2化合物

    公开(公告)号：US06713038B2

    公开(公告)日：2004-03-30

    申请号：US09829616

    申请日：2001-04-10

    申请人： Ling Zhou ,  Thomas Messer ,  Fu-Chu Wen ,  Mark Banash

    发明人： Ling Zhou ,  Thomas Messer ,  Fu-Chu Wen ,  Mark Banash

    IPC分类号： C01G23047

    CPC分类号： B01J21/063 ,  A61K8/29 ,  A61Q17/04 ,  B01J37/0036 ,  C01G23/00 ,  C01G23/001 ,  C01G23/047 ,  C01G23/053 ,  C01P2004/03 ,  C01P2004/50 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2004/62 ,  C08K3/22 ,  C08K2003/2241 ,  C22B34/1213 ,  C22B34/1236

    摘要： A titanium dioxide compound was isolated from a rare type of naturally occurring ore. Processes for efficiently isolating and obtaining these TiO2 compounds, as well as methods for using them have been developed. These TiO2 compounds may be used directly in applications such as paper, plastics and paints without being subjected to the chloride or sulfate processes. Also they made be used as a feedstock for the chloride or sulfate processes. In order to obtain these TiO2 compounds, one may grind or pulverize the naturally occurring ore, disperse it in a solution or suspension, and process it by selective flocculation or aqueous biphasic extraction.

    摘要翻译： 从稀有类型的天然矿石中分离出二氧化钛化合物。 已经开发了用于有效分离和获得这些TiO 2化合物的方法以及使用它们的方法。 这些TiO 2化合物可以直接用于纸，塑料和油漆等应用中，而不经受氯化物或硫酸盐的处理。 它们也被用作氯化物或硫酸盐工艺的原料。 为了获得这些TiO 2化合物，可以研磨或粉碎天然矿石，将其分散在溶液或悬浮液中，并通过选择性絮凝或水相双相萃取处理。

    Titanium dioxide slurries having improved stability
    7.
    发明授权
    Titanium dioxide slurries having improved stability 有权
    具有改善的稳定性的二氧化钛浆料

    公开(公告)号：US06569920B1

    公开(公告)日：2003-05-27

    申请号：US09639860

    申请日：2000-08-16

    申请人： Fu-Chu Wen ,  Duen-Wu Hua

    发明人： Fu-Chu Wen ,  Duen-Wu Hua

    IPC分类号： C08K900

    CPC分类号： C08K9/02 ,  C08L33/02

    摘要： The present invention provides slurries and methods of making slurries having improved stability comprising below about 78 weight-percent rutile titanium dioxide based on the total weight of the slurry, an amorphous alumina compound surface treated titanium dioxide, a polyacrylic acid dispersing agent having a molecular weight in the range of from about 2,000 to about 5,000 that is neutralized with a neutralizing agent having a monovalent group, and water; wherein the slurry has a pH of from about 6 to about 8. The slurries of the present invention resist gel formation.

    摘要翻译： 本发明提供了制备具有改进的稳定性的浆料的浆料和方法，其包含基于浆料的总重量低于约78重量％的金红石二氧化钛，无定形氧化铝化合物表面处理的二氧化钛，具有分子量的聚丙烯酸分散剂 在约2,000至约5,000的范围内，用具有一价基团的中和剂中和;和水; 其中浆液的pH为约6至约8.本发明的浆料抵抗凝胶形成。

    High solids anatase TiO.sub.2 slurries
    10.
    发明授权
    High solids anatase TiO.sub.2 slurries 失效
    高固体锐钛型TiO2浆料

    公开(公告)号：US5746819A

    公开(公告)日：1998-05-05

    申请号：US557953

    申请日：1995-11-14

    申请人： Robert J. Kostelnik ,  Fu-Chu Wen

    发明人： Robert J. Kostelnik ,  Fu-Chu Wen

    IPC分类号： C01G23/047 ,  C01G23/053 ,  C09D17/00 ,  C04B14/30 ,  C09C1/36

    CPC分类号： C09D17/008 ,  C01G23/047 ,  C01G23/0532 ,  C01P2006/22

    摘要： The present invention discloses high solids slurries of sulfate process, anatase titanium dioxide pigment. The improvements of these slurries over those of the prior art are improved slurry stability, tolerance to calcium and magnesium ions, foaming tendencies and reduced tendency to flocculate. The slurries of the present invention are comprised of at least 65% by weight of anatase TiO.sub.2 pigment produced by the sulfate production process dispersed in water containing a sufficient quantity of a dispersing agent selected from the group consisting of acrylic acid homopolymers and copolymers that are predominantly acrylic acid and contain at least one comonomer selected from the group consisting of maleic acid, methacrylic acid, itaconic acid, crotonic acid, fumaric acid, acrylamide, acrylonitrile, ethylene, propylene, styrene and esters of the above acids, which have been partially or completely neutralized with a neutralizing agent having a monovalent group and at least one neutralizing agent having a polyvalent group. A process for producing the slurries of the present invention is disclosed and comprises the steps of a) introducing the dispersing agent into water, b) adjusting the pH to a value greater than 7, c) adding the TiO.sub.2, with adequate mixing to break up large agglomerates, and, optionally, d)grinding in the presence of a suitable grinding medium to achieve the desired mean particle size for pigmentary applications.

    摘要翻译： 本发明公开了高固体硫酸盐工艺，锐钛型二氧化钛颜料。 这些浆料相对于现有技术的改进提高了浆料稳定性，对钙和镁离子的耐受性，发泡趋势和降低的絮凝趋势。 本发明的浆料由至少65重量％的由分散在水中的硫酸盐生产工艺生产的锐钛型TiO 2颜料组成，其中含有足够量的分散剂，所述分散剂选自丙烯酸均聚物和共聚物，主要是由 丙烯酸，并含有至少一种选自马来酸，甲基丙烯酸，衣康酸，巴豆酸，富马酸，丙烯酰胺，丙烯腈，乙烯，丙烯，苯乙烯和上述酸的酯的共聚单体，它们已部分或 用具有一价基团的中和剂和至少一种具有多价基团的中和剂完全中和。 本发明公开了生产浆液的方法，包括以下步骤：a）将分散剂引入水中，b）将pH调节至大于7的值，c）加入TiO 2，充分混合以分解 大量附聚物，以及任选的d）在合适的研磨介质存在下研磨以达到用于颜料应用的所需平均粒度。