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1. 发明授权

US5215580A Process for the production of a fine particle titanium dioxide 失效
标题翻译：生产细颗粒二氧化钛的方法
公开(公告)号：US5215580A
公开(公告)日：1993-06-01
申请号：US835749
申请日：1992-02-06
申请人： Lothar Elfenthal , Edgar Klein , Franz Rosendahl
发明人： Lothar Elfenthal , Edgar Klein , Franz Rosendahl
IPC分类号： C01G23/053 , C09C1/36
CPC分类号： B82Y30/00 , C01G23/0536 , C09C1/3607 , C09C1/3653 , C01P2002/84 , C01P2004/10 , C01P2004/54 , C01P2004/62 , C01P2004/64 , C01P2006/12 , C01P2006/60
摘要： A process produces fine particle titanium dioxide essentially transparent to visible light and essentially UV radiation absorbing. During preparation of the titanium dioxide product, tin dioxide with a particle size of 1 to 10 nm, and preferably 1 to 4 nm, is added, in an amount of 0.5 to 10 weight percent with respect to TiO.sub.2. The particle size of the titanium dioxide is specifically adjusted by the tin dioxide addition. Acicular particles are rounded by heat-treatment between 300.degree. and 800.degree. C., and preferably between 400.degree. and 600.degree. C. The particles can be post-treated to produce a coating of inorganic and/or organic substances. The fine particle titanium dioxide can be prepared by the decomposition of sodium titanate with hydrochloric acid or by suitable hydrolysis of a tetravalent titanium compound which leads to rutile formation. A currently preferred way of adding the tin dioxide is as a colloidal sol which is prepared by the reaction of tin tetrachloride with water at a maximum of 22.degree. C.
摘要翻译：一种方法产生对可见光基本上透明的基本上UV吸收的细颗粒二氧化钛。在二氧化钛制品的制备过程中，相对于TiO 2，添加粒径为1〜10nm，优选为1〜4nm的二氧化锡，其含量为0.5〜10重量％。二氧化钛的粒径通过添加二氧化锡进行了特别的调整。针状颗粒通过在300至800℃之间的热处理，优选在400至600℃之间进行热处理而被倒圆。可以对颗粒进行后处理以产生无机和/或有机物质的涂层。细粒二氧化钛可以通过用盐酸分解钛酸钠或通过适当水解导致金红石形成的四价钛化合物来制备。目前优选的添加二氧化锡的方法是通过四氯化锡与水在最高22℃反应制备的胶体溶胶。

2. 发明授权

US4268422A Titanium dioxide hydrate of a particular structure and process of manufacture thereof 失效
标题翻译：具体结构的二氧化钛水合物及其制造方法
公开(公告)号：US4268422A
公开(公告)日：1981-05-19
申请号：US32172
申请日：1979-04-23
申请人： Heinrich Becker , Edgar Klein , Franz Rosendahl , Helmut Weber
发明人： Heinrich Becker , Edgar Klein , Franz Rosendahl , Helmut Weber
IPC分类号： C01G23/04 , B01J20/06 , C01G23/047 , C01G23/053 , C22B60/02 , B01J21/06
CPC分类号： C22B60/0273 , B01J20/06 , C01G23/047 , C01G23/053 , C22B60/0252 , C01P2002/72
摘要： A novel titanium dioxide hydrate is provided whose structure exhibits X-ray diffraction peaks at 24.6.+-.0.4.degree. and 48.+-.0.4.degree., and which is suitable as an adsorbent material. A process for preparing the novel titanium dioxide hydrate also is provided which includes hydrolyzing a specific titanium sulfate solution and thereafter flocculating colloidal titanium dioxide hydrate by the addition of a monobasic acid and recovering the titanium dioxide hydrate.
摘要翻译：提供了一种新型的二氧化钛水合物，其结构在24.6 +/- 0.4°和48 +/- 0.4°处显示X射线衍射峰，并且其适合作为吸附剂材料。还提供了制备新型二氧化钛水合物的方法，其包括水解特定的硫酸钛溶液，然后通过加入一元酸絮凝胶体二氧化钛水合物并回收二氧化钛水合物。

3. 发明授权

US5393510A High solids content titanium dioxide suspension 失效
标题翻译：高固含量的二氧化钛悬浮液
公开(公告)号：US5393510A
公开(公告)日：1995-02-28
申请号：US91342
申请日：1993-07-12
申请人： Siegfried Blumel , Achim Hartmann , Hans Thumm , Hans-Hermann Luginsland , Franz Rosendahl
发明人： Siegfried Blumel , Achim Hartmann , Hans Thumm , Hans-Hermann Luginsland , Franz Rosendahl
IPC分类号： C09C1/36 , C01G23/04
CPC分类号： C09C1/3653 , C01P2006/80
摘要： A finely divided chloride process titanium dioxide prepared without the use of a dispersing agent. The slurry is dewatered via filtration, and the resulting filter cake is made flowable with an anionic dispersing agent. In order to attain a filter cake with very high solids content, the slurry should contain no, or only very few, multivalent anions. The conditions regarding the content of multivalent anions of the slurry are achieved by selection of suitable dechlorinating agents, especially hydrogen peroxide. The filter cake is thixotropic and is made flowable by the fact that it is put into the "diluted" dispersing agent, especially into a part of the titanium dioxide suspension to which the required quantity of dispersing agent has previously been added. Titanium dioxide suspensions with solids content of approximately 78% are thereby obtained and are of particular use in the paper industry.
摘要翻译：在不使用分散剂的情况下制备细分的氯化法二氧化钛。通过过滤将浆料脱水，并将所得滤饼用阴离子分散剂流动。为了获得具有非常高的固体含量的滤饼，该浆液应不含或仅含极少量的多价阴离子。关于浆料的多价阴离子含量的条件通过选择合适的脱氯剂，特别是过氧化氢来实现。滤饼是触变性的，并且可以通过将其放入“稀释”分散剂，特别是进入预先加入所需量的分散剂的二氧化钛悬浮液的一部分的事实中使其流动。因此得到固体含量约78％的二氧化钛悬浮液，并且在造纸工业中特别有用。

4. 发明授权

US5540907A Process for preparing high solids content titanium dioxide suspension with a dechlorinating agent 失效
标题翻译：用脱氯剂制备高固含量二氧化钛悬浮液的方法
公开(公告)号：US5540907A
公开(公告)日：1996-07-30
申请号：US380317
申请日：1995-01-30
申请人： Siegfried Blumel , Achim Hartmann , Hans Thumm , Hans-Hermann Luginsland , Franz Rosendahl
发明人： Siegfried Blumel , Achim Hartmann , Hans Thumm , Hans-Hermann Luginsland , Franz Rosendahl
IPC分类号： C09C1/36 , D21H17/67 , D21H19/38 , C01G23/00
CPC分类号： D21H19/385 , C09C1/3623 , C09C1/3653 , D21H17/675 , C01P2006/80
摘要： In the preparation of a suspension with a high content of titanium dioxide, which has been produced according to the chloride process, a finely divided titanium dioxide is slurried, in unflocculated condition without use of a dispersing agent, dechlorinated and then filtered. The content of multivalent anions can be controlled in the slurry before the filtration through suitable dechlorinating agents, particularly hydrogen peroxide and/or sodium hydrogen sulfite, and thereby the solid content in the filter cake and the consistency of the filter cake are advantageously influenced. If, on one hand, no or only few multivalent anions are present, a thixotropic filter cake with a high solids content is obtained in a pressure filtration. The filter cake is converted into a titanium dioxide suspension with a high solids content through feeding into a titanium dioxide suspension to which a dispersing agent has been added. If, on the other hand, a rigid filter cake is desired by, for example, a vacuum filtration, a minimum quantity of multivalent anions is necessary for the formation of the rigid filter cake. The solids content is, however, lowered in comparison to the thixotropic filter pastes. Where this minimum quantity of multivalent anions is exceeded, the solids content declines further. The rigid filter cakes can be rendered flowable through the direct admixing of dispersing agent. Hydrogen peroxide is particularly preferred as a dechlorinating agent.
摘要翻译：在制备根据氯化法制备的具有高含量二氧化钛的悬浮液时，将细碎的二氧化钛在不使用分散剂的情况下在未使用分散剂的情况下浆化，脱氯，然后过滤。可以通过合适的脱氯剂，特别是过氧化氢和/或亚硫酸氢钠在过滤之前，在浆料中控制多价阴离子的含量，从而有利地影响滤饼中的固体含量和滤饼的稠度。如果一方面没有或仅存在少量多价阴离子，则在压力过滤中获得具有高固体含量的触变滤饼。通过加入已加入分散剂的二氧化钛悬浮液将滤饼转化成具有高固体含量的二氧化钛悬浮液。另一方面，如果通过例如真空过滤需要刚性滤饼，则形成刚性滤饼时需要最小量的多价阴离子。然而，与触变性过滤膏相比，固体含量降低。超过这种最小量的多价阴离子时，固体含量进一步下降。刚性过滤蛋糕可以通过分散剂的直接混合使其流动。作为脱氯剂，特别优选过氧化氢。

5. 发明授权

US4759800A Process for the improvement of titanium dioxide pigments by post-treatment 失效
标题翻译：通过后处理改善二氧化钛颜料的方法
公开(公告)号：US4759800A
公开(公告)日：1988-07-26
申请号：US18470
申请日：1987-02-25
申请人： Hans H. Luginsland , Franz Rosendahl
发明人： Hans H. Luginsland , Franz Rosendahl
IPC分类号： C09C1/36
CPC分类号： C09C1/3661 , C01P2006/60
摘要： A process for the improvement of titanium dioxide pigments by a post-treatment, wherein the titanium dioxide pigment produced by any process, in the form of an aqueous suspension and in any order, is treated with an aqueous titanium oxide chloride solution resulting from the scrubbing of off-gases derived from the production of titanium tetrachloride and, optionally, with one or more other water-soluble metal salts which when neutralized form difficult-to-dissolve oxide hydrates and/or other difficult-to-dissolve compounds, and/or optionally with a water-soluble silicate, and where difficult-to-dissolve oxide hydrates and/or other difficult-to-dissolve compounds are precipitated onto the titanium dioxide pigment from the titanium oxide chloride solution and, if present, from the other metal salts and/or the silicate, and where the titanium dioxide pigment thus treated is recovered such as by being separated from the suspension, washed, dried and milled. It is found that such a post-treatment can improve titanium dioxide pigments in various properties such as weather resistance and optical properties.
摘要翻译：通过后处理改进二氧化钛颜料的方法，其中通过任何方法制备的呈水悬浮液形式并以任何顺序形成的二氧化钛颜料用洗涤产生的二氧化钛水溶液处理来自生产四氯化钛的废气和任选的一种或多种其它水溶性金属盐，其当被中和形成难溶解的氧化物水合物和/或其它难溶解的化合物时，和/或任选地具有水溶性硅酸盐，并且难以溶解的氧化物水合物和/或其它难以溶解的化合物从二氧化钛氯化物溶液中沉淀到二氧化钛颜料上，并且如果存在，则从其它金属盐和/或硅酸盐，并且其中如此处理的二氧化钛颜料例如通过与悬浮液分离，洗涤，干燥和研磨。发现这样的后处理可以改善诸如耐候性和光学性质等各种性能的二氧化钛颜料。

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