公开(公告)号：EP2758477A1

公开(公告)日：2014-07-30

申请号：EP12780410.2

申请日：2012-09-19

申请人： KRONOS INTERNATIONAL, INC.

发明人： WILKENHÖNER, Uwe ,  BENDER, Jürgen

IPC分类号： C09C1/36 ,  C09D7/12

CPC分类号： C09C1/3692 ,  C01P2006/12 ,  C01P2006/19 ,  C01P2006/22 ,  C01P2006/62 ,  C01P2006/64 ,  C09D7/62

摘要： The invention relates to a method for modifying the surface of titanium dioxide pigment and to the use thereof particularly in coating materials, for interior and exterior walls (emulsion paints) and in water-based coating systems. The pigment of the invention allows the rheological behaviour and open time of the paint to be optimized. The method of surface modification starts from a titanium dioxide pigment which has been provided with a loosely structured surface coating, and subsequently exposes the pigment particles to high shearing and impact forces, thereby at least partly compacting the loose structure of the surface coating. The pigment particles are coated preferably with silicon oxide and/or aluminium oxide. The method of the invention reduces the specific surface area (BET) by around 30%.

公开(公告)号：EP2696975A1

公开(公告)日：2014-02-19

申请号：EP12714578.7

申请日：2012-04-04

申请人： KRONOS INTERNATIONAL, INC.

发明人： SCHARF, Katja ,  SCHMIDT, Michael

IPC分类号： B01J23/745 ,  B01J21/06 ,  B01J35/00 ,  B01J38/02 ,  B01J37/03 ,  B01J35/10

CPC分类号： B01J23/745 ,  B01J21/063 ,  B01J35/004 ,  B01J35/006 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/031 ,  B01J37/035 ,  B01J38/02 ,  C08K2003/2241 ,  C09D7/61 ,  Y02P20/584

摘要： The invention relates to a process for producing an iron-containing photocatalyst based on titanium dioxide. The photocatalyst is produced by introducing iron(III) ions into an aqueous suspension of titanium oxide hydrate nanoparticles, subsequently precipitating iron(III) hydrate, separating off the mixture of titanium oxide hydrate and iron(III) hydrate and heat treating it at a temperature of at least 100°C: the photocatalyst produced by the process of the invention is photoactive both in the UV region and in the visible spectral region.

公开(公告)号：EP2694599A1

公开(公告)日：2014-02-12

申请号：EP12712223.2

申请日：2012-03-21

申请人： Kronos International, Inc.

发明人： SIEKMAN, Janine ,  JUERGENS, Volker ,  BLUEMEL, Siegfried ,  BREYDER, Alexander ,  SCHMITT, Volker

IPC分类号： C09C1/36

CPC分类号： C09C1/3661 ,  C01P2004/86 ,  C01P2006/62 ,  C01P2006/80 ,  C09C1/3653 ,  D21H17/675 ,  D21H17/69 ,  D21H21/28 ,  D21H27/26

摘要： The invention relates to a method for the surface treatment of a titanium dioxide with aluminium phosphate and aqueous aluminium oxide, which results in pigments having improved greying stability and at the same time good brightness and opacity. The method is characterised in that, first of all, phosphoric acid is added to a TiO
2 suspension having a pH of at least 8, whereupon the pH drops to 3 or below. Subsequently an alkaline aluminium compound is added and the pH increases to at least 5 and thereafter an acid aluminium compound is added, the pH adjusting to 4.5 to 7. The pigment produced according to the method of the invention is excellently suitable for use in decorative paper.

摘要翻译： 本发明涉及一种用磷酸铝和水合氧化铝对二氧化钛进行表面处理的方法，其导致具有改善耐灰变性的颜料，同时保持良好的亮度和不透明度。 该方法的特征在于，最初将磷酸加入pH值至少为8的TiO 2悬浮液中，其中pH值降至3或更低。 随后加入碱性铝化合物，其中pH升至至少5，之后加入酸性铝化合物，结果得到4.5至7的pH值。 通过本发明的方法制造的颜料特别适用于装饰层压纸。

公开(公告)号：EP2597073A1

公开(公告)日：2013-05-29

申请号：EP11190174.0

申请日：2011-11-22

申请人： Steag Power Minerals GmbH ,  KRONOS INTERNATIONAL, INC.

发明人： Krohm, Werner ,  Bender, Jürgen ,  Scheidt, Christian

IPC分类号： C04B14/30 ,  C04B20/10 ,  C04B28/04 ,  C04B40/00

CPC分类号： C04B14/305 ,  B01J21/063 ,  C04B14/14 ,  C04B20/1066 ,  C04B28/04 ,  C04B40/0042 ,  C04B2111/2061 ,  Y02W30/92 ,  C04B18/08 ,  C04B20/008

摘要： Eine photokatalytische Baustoffmischung sowie ein Verfahren zu ihrer Herstellung wird offenbart. Die photokatalytische Baustoffmischung ist eine Trockenmischung aus einem feinteiligen Photokatalysator und einem puzzolanischen Träger. Der Träger hat eine kugelige oder gerundete Kornform mit einer Korngröße zwischen 0,1 µm und 1 mm. Der Photokatalysator ist wenigstens teilweise auf der Oberfläche des Trägers verteilt. Dies wird erreicht, indem die Trockenmischung mit einem Intensivtrockenmischer erstellt wird.
Durch die kugelige oder gerundete Kornform des Trägermaterials wird eine verbesserte Verdichtbarkeit und eine Verbesserung weiterer Baustoffeigenschaften herbeigeführt. Desweiteren wird weniger Photokatalysator benötigt, um eine gleichbleibende photokatalytische Wirkung bereitzustellen.

摘要翻译： 光催化建筑材料混合物包含细碎光催化剂的干混合物和火山灰载体参展具有0.1微米的粒度为1毫米，其中该光催化剂是至少在载体的表面上部分地分布的球形或圆形的颗粒形状 ， 因此独立权利要求中包括了：（1）制备光催化建筑材料混合物，其包括生产上述干混合物，以及处理该光催化剂和使用在强力混合器在建筑材料混合物中的载体; 和（2）一个具体组件包括上述建筑材料混合物。

公开(公告)号：EP1373412B1

公开(公告)日：2010-04-28

申请号：EP02727212.9

申请日：2002-03-12

申请人： KRONOS INTERNATIONAL, INC.

发明人： BENDER, Jürgen ,  BLÜMEL, Siegfried ,  SCHMITT, Volker ,  VIELHABER-KIRSCH, Brigitte

IPC分类号： C09C1/00

CPC分类号： C09C1/3692 ,  C09C1/36

公开(公告)号：EP1994098A2

公开(公告)日：2008-11-26

申请号：EP07711855.2

申请日：2007-03-08

申请人： KRONOS INTERNATIONAL, INC.

发明人： DREWS-NICOLAI, Lydia ,  BLUEMEL, Siegfried

IPC分类号： C09C1/36

CPC分类号： C09C1/3692 ,  C09C1/3661 ,  C09C1/3676 ,  D21H17/675 ,  D21H17/69 ,  D21H27/26

摘要： The invention relates to a coated titanium dioxide pigment that has good opacity and good retention and is used in decorative paper. Also disclosed is a method for producing said pigment. The inventive pigment is characterized by a surface coating containing aluminum oxide phosphate and attached hollow bodies. The inventive production method is characterized in that an aluminum component and a phosphorus component are first introduced into a TiO2 suspension while the pH value does not drop below 10. Then the hollow bodies are added, whereupon at least one acidic component is added such that the pH value of the suspension is lowered to a value ranging between 4 and 9. In an alternative embodiment of said method, the suspension has a pH value of less than 4 when the aluminum component and the phosphorus component are added.

公开(公告)号：EP1771519B1

公开(公告)日：2007-12-12

申请号：EP05760729.3

申请日：2005-06-23

申请人： KRONOS INTERNATIONAL, INC.

发明人： BLUEMEL, Siegfried ,  DREWS-NICOLAI, Lydia

IPC分类号： C09C1/36

CPC分类号： C09C1/3661 ,  C01P2002/52 ,  C01P2004/84 ,  C01P2006/12 ,  C08K3/22 ,  C08K9/02 ,  C09D7/62

摘要： The invention relates to a weather-stable titanium dioxide pigment, which has good optical properties and a dense silicon dioxide skin doped with metal atoms. Particularly suitable doping elements are tin, zirconium and titanium. The dense silicon dioxide skin consists of a number of layers, the innermost of which not containing a significant quantity of metal atoms. The inventive coating is produced by adding the constituents in succession into the alkaline suspension (pH value of at least 9) during which the pH value decreases. In order to completely form the doped dense SiO 2 skin, it is necessary to slowly decrease the pH value until reaching a value less than 9. The pigment is particularly suited for use in paints, varnishes and plastics.

公开(公告)号：EP1419823A3

公开(公告)日：2006-01-11

申请号：EP03025553.3

申请日：2003-11-08

申请人： KRONOS INTERNATIONAL, INC.

发明人： Blümel, Siegfried, Dr. ,  Jürgens, Volker ,  Wensing, Siegfried ,  Schwanitz, Hans-Ulrich

IPC分类号： B02C19/06

CPC分类号： B02C19/061

摘要： Die Erfindung betrifft eine modular aufgebaute Spiralstrahlmühle zum Zerkleinern von pulverförmigen Materialien, die aus einem Stahl-Außengehäuse besteht, in das ein druckfestes und vollständig aus verschleißfestem Material bestehendes Mahlgehäuse eingelagert ist. Die Spiralstrahlmühle zeichnet sich aus durch verbesserten Verschleißschutz, längere Standzeiten, kürzere Reparaturzeiten und einfache Reinigung.

公开(公告)号：EP4442770A1

公开(公告)日：2024-10-09

申请号：EP23166814.6

申请日：2023-04-05

申请人： KRONOS INTERNATIONAL, Inc.

发明人： The designation of the inventor has not yet been filed

IPC分类号： C09C1/36 ,  C09C3/04 ,  C09C3/06

CPC分类号： C09C1/3615 ,  C09C1/3661 ,  C09C3/063 ,  C09C3/04 ,  C01P2004/8420130101 ,  C01P2006/1220130101

摘要： The present invention relates to a method for coating inorganic particles in an aqueous suspension with at least one coating substance, comprising the steps of a) heating the aqueous suspension of inorganic particles to a temperature in the range of from 30 to 95°C; b) adding a first watersoluble precursor of a coating substance to the aqueous suspension and curing the aqueous suspension in a temperature range of from 30 to 95°C at a pH in the range of from 3 to 10.5; d) wherein the temperature of the aqueous suspension during the overall coating process is set in the range of from 30 to 95°C and the pH of the aqueous suspension during the overall coating process is in the range of from 3.0 to 10.5; e) wherein the aqueous suspension passes during coating step b) at least one agitator wherein the at least one agitator provides an energy input of 1.6 kWh/m3 or less and has a rotational speed of 5900 rpm or less; and f) wherein the aqueous suspension is circulated at least during step b) by the at least one agitator in a circuit, wherein the circuit contains the at least one agitator and at least one vessel.

公开(公告)号：EP3183301B1

公开(公告)日：2020-09-16

申请号：EP15745151.9

申请日：2015-07-24

申请人： Kronos International, Inc.

发明人： BEYER, Norbert ,  FIDALGO-ESTEVEZ, Jud-Reginauld ,  FRAHM, Heiko ,  BLUEMEL, Siegfried

IPC分类号： C09C1/36 ,  C09C3/06