Abstract: The present invention relates to pigment granules and to a process for the preparation thereof and their use.

Abstract: The present invention relates to pigment granules and to a process for the preparation thereof and their use.

Abstract: The present invention relates to a composite particle containing a solid inorganic or organic colorless support material and adherent to it an inorganic and/or organic pigment particle, wherein the pigment particle has an average particle size of 1 nm to 100 nm, comprises at least one primary pigment particle and the minimum average distance between two pigment particles is at least one quarter of the diameter of the primary pigment particle, whereby the modified inorganic and organic pigments, depending on the pigment material, can be used as IR light absorbers or as color-imparting agents and give rise to a negligible haze in the matrix.

Abstract: The present invention relates to a process for producing iron oxide red pigments containing the step of forming a suspension of haematite nuclei by reaction between dilute nitric acid and elemental iron above 90° C. and to pigments of pure color and their use.

Abstract: The present invention relates to a composite particle containing a solid inorganic or organic colorless support material and adherent to it an inorganic and/or organic pigment particle, wherein the pigment particle has an average particle size of 1 nm to 100 nm, comprises at least one primary pigment particle and the minimum average distance between two pigment particles is at least one quarter of the diameter of the primary pigment particle, whereby the modified inorganic and organic pigments, depending on the pigment material, can be used as IR light absorbers or as color-imparting agents and give rise to a negligible haze in the matrix.

Abstract: The present invention relates to inorganic pigment pellets for coloring building materials, lacquers and plastics and to a process for the production thereof and to the use thereof inter alia for the production of pastes, suspensions and emulsion paints.

Abstract: The invention relates to granules of inorganic pigments, a process for their production using several auxiliary substances by compacting and their use in many technical fields.

Abstract: The present invention relates to intermediate layers of inorganic materials in electroluminescent arrangements which contain finely divided inorganic particles (nano-particles) dispersed in a polymer binder.

Abstract: The present invention relates to nanodisperse titanium dioxide, to a process for the production thereof and to the use thereof.

Abstract: The invention relates to a process for re-processing deactivated DENOX catalysts on the basis of Ti/V/Mo/W mixed oxides.

Abstract: Pigment preparations having a solids content of greater than 40% comprise, as dispersing agents, polymers having recurring succinyl units, in particular polyaspartic acid.

Abstract: A process for the production of a mixed oxide powder, that contains as chief constituent TiO.sub.2 in the form of anatase and as minor constituents at least one of the catalytically active oxides MoO.sub.3, WO.sub.3 and V.sub.2 O.sub.5, suitable for use as a catalyst for the removal of nitrogen oxides, comprising(a) partially neutralizing a titanium dioxide hydrate suspension containing sulphuric acid with an alkaline liquor to a pH value between about 4.0 and 6.0 at temperatures between about 20.degree. and 100.degree. C.,(b) filtering the suspension from (a) to produce a filter cake and intensively washing the filter cake,(c) adding to the filter cake from (b) at least one water-soluble salt of at least one of the metals Mo, W and V in solid or dissolved form, and(d) drying the filter cake from (c) and calcining it at a temperature between about 300.degree. and 750.degree. C.

Abstract: The invention relates to finely divided, highly pure neutral zinc oxide powder used for UV protection in cosmetic sun screen preparations and daytime skin care preparations as well as in lacquers and plastics, and to a process for its preparation.

Abstract: A process for the preparation of very pure titanium dioxide by reacting titanium tetrahalides with sulphuric acid, hydrolysis the titanyl sulphate solution obtained and calcining the hydrolysate is disclosed wherein the reaction between titanium tetrahalide and aqueous 20-40% by weight strength sulphuric acid is performed in such a way that crystallisation of titanyl sulphate does not take place, the hydrogen halide is separated, the solution is optionally concentrated and filtered and then the ratio by weight of sulphuric acid to titanium dioxide is adjusted to between 1.7 and 2.0 and the titanium dioxide concentration is adjusted to between 250 and 300 g/l, the solution is hydrolyzed and the resulting titanium oxide hydrate is filtered off and calcined to give Futile or anatase.