公开(公告)号：US20140073729A1

公开(公告)日：2014-03-13

申请号：US14017474

申请日：2013-09-04

申请人： Kronos International, Inc.

发明人： Michael Schmidt ,  Katja Scharf

IPC分类号： C09C1/36

CPC分类号： C09C1/3607 ,  C01G23/0534 ,  C01P2002/52 ,  C01P2002/84 ,  C01P2004/51 ,  C01P2004/62 ,  C01P2006/12 ,  C09C1/3653 ,  C09C1/3661 ,  C22B23/043 ,  C22B34/125

摘要： The invention relates to rutile titanium dioxide pigment particles that are capable of reflecting infrared radiation to a high degree and also display pigmenting properties, as well as a method for their manufacture. The particles have a mean particle size of 0.4 to 1.0 μm and are doped with zinc and potassium, but not with aluminium. Preferably, the particles have a compact particle form with a preferred height:width ratio of 1.5:1. The particles are preferably manufactured by the familiar sulphate process for manufacturing titanium dioxide, and are optionally subjected to inorganic and/or organic post-treatment following calcining. Preferably, the rutile titanium dioxide particles are suitable for manufacturing heat-insulating paints, coatings or plastics as well as for instance plasters or paving stones.

摘要翻译： 本发明涉及能够高度反射红外辐射并且还显示着色性质的金红石型二氧化钛颜料颗粒及其制造方法。 该颗粒的平均粒径为0.4-1.0μm，并掺杂有锌和钾，但不掺铝。 优选地，颗粒具有紧凑的颗粒形式，优选的高度：宽度比为1.5:1。 颗粒优选通过熟悉的用于制备二氧化钛的硫酸盐方法制造，并且任选地在煅烧后进行无机和/或有机后处理。 优选地，金红石型二氧化钛颗粒适用于制造隔热涂料，涂料或塑料以及例如石膏或铺路石。

公开(公告)号：US5030439A

公开(公告)日：1991-07-09

申请号：US422536

申请日：1989-10-17

申请人： Thomas I. Brownbridge

发明人： Thomas I. Brownbridge

IPC分类号： C01G23/053 ,  C09C1/36

CPC分类号： C01G23/0532 ,  C01G23/0534

摘要： The invention relates to a method for the preparation of particulate pigmentary titanium dioxide. The method comprises reacting, in solution, a precursor titanium tetrahalide with sulfuric acid to produce an intermediate titanyl sulfate product. Following crystallization and recovery of this intermediate product from solution the crystallized intermediate is redissolved in an aqueous solvent medium and hydrolyzed at elevated temperatures to provide a particulate amorphous titanium dioxide intermediate product. After separation from the aqueous solvent medium, this intermediate product then is subjected to calcination at elevated temperatures to produce the desired particulate titanium dioxide end product.

公开(公告)号：US3862297A

公开(公告)日：1975-01-21

申请号：US9754170

申请日：1970-12-14

申请人： LAPORTE INDUSTRIES LTD

发明人： CLARIDGE MAURICE ARTHUR ,  PEARSE RICHARD VYVIAN

IPC分类号： C01G23/00 ,  C01G23/053 ,  C01G23/08 ,  C09C1/00 ,  C09C1/36 ,  C01G23/04 ,  C01G23/06

CPC分类号： C09C1/3692 ,  C01G23/0534 ,  C01G23/08 ,  C01P2002/52 ,  C01P2004/03 ,  C01P2006/62 ,  C09C3/063 ,  C09C3/08

摘要： The process comprises hydrolysing a solution of titanium sulphate, washing the titanium dioxide hydrolysate, and then calcining the hydrolysate at a temperature from 750 to 1000*C. to yield titanium dioxide pigment having desirable properties in terms of brightness, opacity, and/or texture. A rutile-promoting seed is incorporated with the titanium sulphate solution and/or with the hydrolysate. In the process, the pH of the wet hydrolysate is in the range of from 6 to 10 immediately before calcination, and there is present in the hydrolysate immediately before calcination an ammonium compound that will be expelled, together with any decomposition products thereof, during calcination; a treating agent or agents selected from beryllium, aluminium, magnesium, zinc and compounds thereof, and a treating agent or agents selected from sodium potassium, rubidium, caesium, and compounds thereof, with the proviso that lithium and/or a lithium compound may be substituted for any or all of the agent or agents selected from the first-mentioned and/or second-mentioned group. The total quantity of the ammonium compound is at least 0.7 percent (calculated as ammonium sulphate); the total quantity of agents from the first-mentioned group is from 0.02 to 0.50 percent (calculated as the metal oxide or oxides); and the total quantity of agents from the secondmentioned group is from 0.05 to 1.0 percent (calculated as the alkali metal oxide or oxides). All the percentages are by weight and are based on the weight of titanium dioxide. The ammonium compound and the treating agent or agents may be incorporated with the hydrolysate in any order. Conveniently, any necessary pH adjustment is effected at least in part by using an alkaline ammonium compound.

摘要翻译： 该方法包括水解硫酸钛溶液，洗涤二氧化钛水解物，然后在750〜1000℃的温度下煅烧水解产物，得到在亮度，不透明度和/或质地方面具有期望性能的二氧化钛颜料 。 将金红石促进种子与硫酸钛溶液和/或与水解产物结合。 在此过程中，湿式水解产物的pH在煅烧前立即在6至10℃范围内，在煅烧之前立即在水解产物中存在待煅烧的铵化合物及其任何分解产物在煅烧过程中 ; 选自铍，铝，镁，锌及其化合物的处理剂或试剂，以及选自钠钾，铷，铯及其化合物的处理剂或试剂，条件是锂和/或锂化合物可以是 代替选自前述和/或第二组的任何或所有试剂或试剂。 铵化合物的总量至少为0.7％（以硫酸铵计）; 来自前述组的试剂的总量为0.02〜0.50％（以金属氧化物计算）; 并且来自第二组的试剂的总量为0.05〜1.0％（以碱金属氧化物计算）。 所有的百分数均以重量计，基于二氧化钛的重量。 铵化合物和处理剂或试剂可以以任何顺序与水解产物结合。 方便地，至少部分地通过使用碱性铵化合物进行任何必要的pH调节。

公开(公告)号：US3615204A

公开(公告)日：1971-10-26

申请号：US3615204D

申请日：1969-09-22

申请人： NL INDUSTRIES INC

发明人： LIBERA JOHN J ,  PUETZ ECKARD J

IPC分类号： C01G23/053 ,  C09C1/36 ,  C01G23/06 ,  C01G23/08

CPC分类号： C01G23/0534 ,  C01P2006/60 ,  C09C1/363

摘要： This invention relates in general to a process for preparing a high-quality titanium dioxide pigment in which the titanium dioxide is in the anatase crystal form. The process comprises hydrolyzing in a particular manner the titanium values from a titanium sulfate-ferrous sulfate solution in which the concentration of titanium is from 80 to 180 g.p.l. TiO2 and the FeSO4/TiO2 ratio is from 2.20 to 2.75 and treating and calcining the hydrate so formed to produce a high-grade anatase TiO2 pigment. Using the hydrolysis process of the instant invention, a high-grade anatase titanium dioxide pigment may be produced from a solution which does not require the conventional crystallization step to remove most of the iron values and the concentration step to increase the titanium content in the liquor to at least 200 g.p.l. TiO2.

公开(公告)号：US2511218A

公开(公告)日：1950-06-13

申请号：US68084646

申请日：1946-07-01

申请人： DU PONT

发明人： MARCUS OLSON CARL ,  ELIOT BOOGE JAMES

IPC分类号： C01G23/053

CPC分类号： C01G23/053 ,  C01G23/0534 ,  C01P2006/60

公开(公告)号：US1922328A

公开(公告)日：1933-08-15

申请号：US58288031

申请日：1931-12-23

申请人： RHODES HERBERT L

发明人： RHODES HERBERT L

IPC分类号： C01G23/00 ,  C01G23/053

CPC分类号： C01G23/005 ,  C01G23/0534

公开(公告)号：US6090354A

公开(公告)日：2000-07-18

申请号：US822753

申请日：1997-03-24

申请人： John Henry Russell ,  David Ian Rochester ,  Kenneth Burns ,  Roger Philip Bacon

发明人： John Henry Russell ,  David Ian Rochester ,  Kenneth Burns ,  Roger Philip Bacon

IPC分类号： C01G23/053 ,  C22B3/04 ,  C22B34/12 ,  C01G23/02 ,  C01G23/047

CPC分类号： C01G23/0534 ,  C22B34/1204 ,  C22B34/125

摘要： A process for production of titanium oxide comprises digesting an ilmenite ore in which at least 92% by weight of the iron which is present is in the ferrous form, if necessary adding a reducing agent and subsequently precipitating hydrous titanium oxide. When a reducing agent is added the amount used is equivalent to less than 4.0% by weight metallic iron calculated with respect to ilmenite ore. The process enables an increased throughput on a pigment plant and less co-product in the form of iron compounds is produced.

摘要翻译： 生产氧化钛的方法包括消化钛铁矿矿石，其中至少有92重量％的存在的铁是亚铁形式的，如果需要的话加入还原剂，随后沉淀含水氧化钛。 当添加还原剂时，使用的量等于相对于钛铁矿计算的小于4.0重量％的金属铁。 该方法能够增加色素植物的产量，并且产生较少的铁化合物形式的副产物。

公开(公告)号：US5173386A

公开(公告)日：1992-12-22

申请号：US458349

申请日：1989-12-28

申请人： Sadao Murasawa

发明人： Sadao Murasawa

IPC分类号： C01G23/047 ,  C01G23/053 ,  G03G5/087

CPC分类号： G03G5/087 ,  C01G23/047 ,  C01G23/0534 ,  C01G23/0538 ,  C01P2004/03 ,  C01P2004/50 ,  C01P2006/19 ,  C01P2006/60

摘要： The present invention provides novel titanium dioxide aggregates especially suitable for an electrophotographic photosensitive material. This titanium dioxide aggregates comprise sintered aggregates of fine primary particles and have a rutile type crystal structure and an oil absorption of 35-65. This titanium dioxide aggregates which are treated with a mineral acid is also provided. There is also provided an electrophotograpic photosensitive material which contains such titanium dioxide in a photosensitive layer.

摘要翻译： 本发明提供特别适用于电子照相感光材料的新型二氧化钛聚集体。 该二氧化钛聚集体包含细小一次粒子的烧结聚集体，并具有金红石型晶体结构，吸油率为35-65。 还提供了用无机酸处理的这种二氧化钛聚集体。 还提供了一种在感光层中含有这种二氧化钛的电子照相感光材料。

公开(公告)号：US4781911A

公开(公告)日：1988-11-01

申请号：US37205

申请日：1987-04-10

申请人： Earl R. Lawhorne

发明人： Earl R. Lawhorne

IPC分类号： C01G23/053 ,  C04B35/46

CPC分类号： C01G23/0534 ,  C04B35/46 ,  C01P2004/61 ,  C01P2006/11 ,  C01P2006/20

摘要： A titanium dioxide compositon suitable for incorporation into ceramic frit, and process for preparation thereof. A clarified titanium sulfate liquor is hydrolyzed and precipitated to yield relatively large and uniform-sized hydrolysate particles which are easily separated from the acidic liquor by filtration.

摘要翻译： 适用于掺入陶瓷玻璃料的二氧化钛组合物及其制备方法。 将澄清的硫酸钛溶液水解和沉淀以产生相对较大且均匀的水合物颗粒，其通过过滤容易地与酸性液体分离。

公开(公告)号：US4073877A

公开(公告)日：1978-02-14

申请号：US581217

申请日：1975-05-27

申请人： Edgar Klein ,  Reinhard Kracke ,  Walter Nespital ,  Rudiger Paul, deceased

发明人： Edgar Klein ,  Reinhard Kracke ,  Walter Nespital ,  Rudiger Paul, deceased

IPC分类号： C01G23/047 ,  C01G23/053 ,  C09C1/36 ,  C01G23/06

CPC分类号： C01G23/0534 ,  C01G23/047 ,  C09C1/36 ,  C01P2006/80

摘要： The application is concerned with a process for the manufacture of a titanium dioxide pigment from a titanium sulfate solution by hydrolysis in the presence of nuclei. The latter may be formed externally from any suitable source of titanium sulfate solution and preferably, but not exclusively, from a portion of the titanium sulfate solution used in forming the hydrous TiO.sub.2 ; the nuclei being prepared by mixing the titanium sulfate solution, from whatever source, simultaneously with an alkaline reacting solution and subsequently curing the mixture at elevated temperature. In the present application "titanium sulfate solution" is understood to be a solution which may also contain other substances besides titanium sulfate; and may be obtained, for example, by digestion of titaniferous ores or slags using sulfuric acid, followed by dissolution of the resulting digestion cake.

摘要翻译： 本申请涉及在核的存在下通过水解由硫酸钛溶液制造二氧化钛颜料的方法。 后者可以从任何合适的硫酸钛溶液源外部形成，优选但不排他地由用于形成含水TiO 2的一部分硫酸钛溶液形成; 该核通过将来自任何来源的硫酸钛溶液与碱性反应溶液同时混合并随后在升高的温度下固化该混合物来制备。 在本申请中，“硫酸钛溶液”被理解为除硫酸钛之外还可含有其它物质的溶液; 并且可以例如通过使用硫酸消耗含钛矿石或炉渣，然后溶解所得消化饼来获得。