公开(公告)号：EP2892851A1

公开(公告)日：2015-07-15

申请号：EP13759136.8

申请日：2013-08-27

申请人： KRONOS INTERNATIONAL, INC.

发明人： SCHMIDT, Michael ,  SCHARF, Katja

IPC分类号： C01G23/053 ,  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 which are capable of reflecting infrared radiation to a high degree and of exhibiting pigmenting properties, and also to a method for producing them. The particles have an average size of 0.4 to 1.0 μm and are doped with zinc and potassium, but not with aluminium. The particles have a stocky shape with a preferred side ratio of 1.5:1. The particles are produced preferably by the known sulphate process for producing titanium dioxide, and after having been calcined are optionally given an organic and/or inorganic aftertreatment. The rutile titanium dioxide particles of the invention are suitable for producing heat insulation paints, varnishes or plastics and also, for example, for producing renders 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。 这些颗粒的平均粒度为0.4-1.0μm，并掺杂有锌和钾，但不掺合铝。 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。 颗粒优选由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：EP2883916A1

公开(公告)日：2015-06-17

申请号：EP13005812.6

申请日：2013-12-13

申请人： KRONOS INTERNATIONAL, INC.

发明人： Grosser, Ingo ,  Mersch, Frank ,  Wilkenhöner, Uwe

IPC分类号： C09C1/02

CPC分类号： C09C1/024 ,  C01P2004/61 ,  C01P2004/62 ,  C09C1/02 ,  C09C1/028

摘要： Die Erfindung betrifft die Behandlung von Calciumcarbonat- oder Magnesiumcarbonat-haltigen Partikeln mit Flusssäure, Oxalsäure oder deren wasserlöslichen Salze, so dass sich auf der Partikeloberfläche schwerlösliche Fluorid- oder Oxalatverbindungen bilden, die den Partikeln eine chemische Oberflächenstabilität (Passivierung) verleihen.
Die Partikel sind insbesondere geeignet zur Verwendung in Beschichtungen und Kunststoffen.

摘要翻译： 本发明涉及一种碳酸钙或用氢氟酸，草酸或水溶性盐的颗粒含有碳酸盐的镁的治疗，所以在粒子表面难溶氟化物或草酸化合物，从而使该颗粒的表面化学稳定性（钝化），该形式。 所述颗粒是特别适用于涂料和塑料的用途。

公开(公告)号：EP2303972B1

公开(公告)日：2015-01-14

申请号：EP09757217.6

申请日：2009-05-28

申请人： KRONOS INTERNATIONAL, INC.

发明人： FRAHM, Heiko ,  FRIEDRICH, Joerg ,  KAMINSKI, Mark ,  SCHMEIER, Erwin ,  DREWS-NICOLAI, Lydia ,  JUERGENS, Volker

IPC分类号： C09C1/36

CPC分类号： C09C1/3684 ,  C01P2004/04 ,  C01P2006/60 ,  Y10T428/2991

公开(公告)号：EP1989264B1

公开(公告)日：2012-09-05

申请号：EP07703018.7

申请日：2007-01-25

申请人： KRONOS INTERNATIONAL, INC.

发明人： BLUEMEL, Siegfried ,  DREWS-NICOLAI, Lydia ,  JUERGENS, Volker ,  SCHMITT, Volker

IPC分类号： C09C1/36 ,  D21H17/69

CPC分类号： C09C1/3661 ,  C01P2006/12 ,  C01P2006/62 ,  D21H17/675 ,  D21H17/69 ,  D21H27/26

公开(公告)号：EP2403622A1

公开(公告)日：2012-01-11

申请号：EP10707205.0

申请日：2010-02-04

申请人： KRONOS INTERNATIONAL, INC.

发明人： BLOESS, Stephan, Peter ,  ELFENTHAL, Lothar ,  LOEHR, Karsten

IPC分类号： B01D21/01 ,  C02F1/32 ,  C02F1/72 ,  B05D3/06

CPC分类号： B01D21/01 ,  C02F1/30 ,  C02F1/32 ,  C02F1/725 ,  C02F2101/301 ,  C02F2305/10

摘要： The invention relates to a method for photocatalytically precipitating a dispersed material from a tenside dispersion. The tenside dispersion comprises at least one dispersing agent, a dispersed material, a tenside, and a photocatalyst. Titanium dioxide is in particular suitable as a photocatalyst that is photoactive in the ultraviolet range and optionally also in the visible spectral range. The dispersing agent is preferably water or an aqueous fluid. Perfluoridated tensides (PFT), among others, are also suitable as a tenside. The method is characterized in that in particular temperature-sensitive materials, such as polytetrafluorethylene (PTFE) can be precipitated in a simple manner.

公开(公告)号：EP2303972A1

公开(公告)日：2011-04-06

申请号：EP09757217.6

申请日：2009-05-28

申请人： KRONOS INTERNATIONAL, INC.

发明人： FRAHM, Heiko ,  FRIEDRICH, Joerg ,  KAMINSKI, Mark ,  SCHMEIER, Erwin ,  DREWS-NICOLAI, Lydia ,  JUERGENS, Volker

IPC分类号： C09C1/36

CPC分类号： C09C1/3684 ,  C01P2004/04 ,  C01P2006/60 ,  Y10T428/2991

摘要： The invention relates to a method for coating the surface of inorganic solid particles in an aqueous suspension, in particular for coating titanium dioxide with SiO
2 . The method comprises the steps: a) deagglomeration of the solid particles situated in an aqueous suspension, b) addition of a water-soluble precursor compound of the coating substance to the suspension, c) homogenization of the suspension in a dispersion apparatus immediately following step b), wherein, in steps a) to c), temperature and pH of the suspension do not change significantly, d) transport of the suspension into a container and precipitation of the coating substance onto the particle surface and optionally application of further coatings, e) removing the solid particles from the suspension. The method leads to a very uniform and closed sheath on the particle surface and to less coating substance which is precipitated out separately.

公开(公告)号：EP2200942A2

公开(公告)日：2010-06-30

申请号：EP08802799.0

申请日：2008-10-07

申请人： KRONOS INTERNATIONAL, INC.

发明人： GRUBER, Rainer

IPC分类号： C01G23/07

CPC分类号： C01G23/07

摘要： The invention relates to the production of titanium dioxide by oxidating titanium tetrachloride in a multi-step method, wherein oxygen and titanium tetrachloride are dosed in several steps. In the first step, gaseous TiCI4 is introduced stochiometrically or hyperstochiometrically into a preheated oxygen-containing gas flow in order to produce a TiO2 -containing gas suspension. In the second or other steps, liquid TiCI4 and oxygen-containing gas are intriduced into the TiO2-containing gas suspension, in order to produce additional TiO2. In one embodiment of the invention, TiCI4 and oxygen-containing gas are added at a temperature of under about 50 °C in the second or other steps. Said invention is energy saving compared to other known methods known from the prior art.

公开(公告)号：EP2129626A2

公开(公告)日：2009-12-09

申请号：EP07856539.7

申请日：2007-12-11

申请人： KRONOS INTERNATIONAL, INC.

发明人： GRUBER, Rainer ,  MALCHAREK, Frank

IPC分类号： C01G23/07 ,  C09C1/36

CPC分类号： C01G23/047 ,  C01G23/07

摘要： The invention relates to the production of titanium dioxide by oxygenating titanium tetrachloride and then cooling the titanium dioxide particle-gas mixture while adding scouring particles in a cooling section, the gas-particle flow being made to rotate. According to the invention, the titanium tetrachloride is introduced into the axial oxygen-containing flow on the cross-sectional plane of the tubular reactor, but not in the radial direction. The flow velocity of the oxygen-containing gas exceeds 20 m/s, particularly reaching at least 40 m/s. The method according to the invention makes it possible to effectively remove accumulated TiO2 from the internal wall and the cooling section of the tubular reactor, thus increasing the cooling performance, and produce a TiO2 pigment which has a narrow grain size distribution.

公开(公告)号：EP1559694A3

公开(公告)日：2007-12-12

申请号：EP05001496.8

申请日：2005-01-26

申请人： KRONOS INTERNATIONAL, INC.

发明人： Kühl, Thomas, Dr. ,  Hartmann, Achim

IPC分类号： C04B22/14 ,  C04B111/10

CPC分类号： C04B40/0042 ,  C04B22/149

摘要： Die Erfindung betrifft ein Zusatzmittel zur Chromatreduktion in Zement auf Basis Filtersalz. Filtersalz als Nebenprodukt der Titandioxidherstellung nach dem Sulfatverfahren besteht i.w. aus Fe(II)sulfat-Monohydrat und freier Schwefelsäure (etwa 12 bis 30 Gew.-%). Das Zusatzmittel enthält Filtersalz entweder als wässrige Lösung oder in einer pulverförmigen Mischung mit einem Trägermaterial, z.B. Kalkhydrat, Kalksteinmehl oder gefällter Kieselsäure. Bezogen auf das Filtersalz werden 5 bis 20 Gew.-% Trägermaterial eingesetzt. Darüber hinaus kann die Mischung auch Grünsalz (Fe(II)sulfat-Heptahydrat) enthalten, bevorzugt in einem Verhältnis Filtersalz zu Grünsalz von 2 : 1.

公开(公告)号：EP1732992A1

公开(公告)日：2006-12-20

申请号：EP05769797.1

申请日：2005-04-06

申请人： KRONOS INTERNATIONAL, INC.

发明人： ORTH-GERBER, Jürgen ,  KISCH, Horst ,  SAKTHIVEL, Shanmugasundaram

IPC分类号： C09C1/36 ,  C01G23/047 ,  B01J21/06 ,  B01J35/00

CPC分类号： B82Y30/00 ,  B01J21/063 ,  B01J35/0033 ,  B01J35/004 ,  C01G23/047 ,  C01P2002/30 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2002/86 ,  C01P2004/04 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/62 ,  C01P2006/63 ,  C01P2006/64 ,  C02F1/283 ,  C02F1/32 ,  C02F1/725 ,  C02F2305/10 ,  C09C1/3669 ,  Y10T428/249921

摘要： A highly effective photocatalyst active in daylight and based on carbon-modified titanium dioxide (vlp-TiO2) is disclosed, as well as a process for producing the same. The vlp-TiO2 is produced by mixing a finely divided titanium compound (BET ≥ 50 m2/g) with a carbon-containing substance, then by thermally treating it at temperatures of up to 400 °C. The carbon content ranges from 0.05 to 4 % by weight, preferably from 0.4 to 0.8 % by weight. The product is characterised by an only insignificant ESR signal in a g value range from 1.97 to 2.05, at about 2003. The claimed photocatalyst is suitable for the mineralisation (oxidation) of impurities and pollutants in liquids and gasses.