公开(公告)号：EP2782884A1

公开(公告)日：2014-10-01

申请号：EP12784298.7

申请日：2012-11-15

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： The invention relates to a construction material mixture as a concrete additive. The construction material mixture contains a pozzolanic substrate and a photocatalyst. The pozzolanic substrate and the photocatalyst are present as a dry mixture. The dry mixture is a cement-free dry mixture, wherein the photocatalyst has a primary particle size between 2 nm and 100 nm, and at least 90% by weight of the pozzolanic substrate consists of fly ash with a grain size between 0.1 μm and 1 mm. The substrate and the photocatalyst are intensively mixed such that the photocatalyst is at least partly distributed on the surface of the substrate. The construction material mixture improves the processing of a concrete in comparison to the use of other pozzolanic substrates for the catalyst.

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：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