Abstract: The invention relates to composite pigment particles containing calcium phosphate, their manufacture and their use in coatings, plastics and laminates. The composite pigment particles contain titanium dioxide pigment particles and precipitated calcium phosphate. In one embodiment, the composite pigment particles additionally contain an inorganic and/or organic filler as an extender, preferably selected from the group comprising Ca, Ca—Mg and Mg carbonates, natural and synthetic silicon dioxide and oxides. The composite pigment particles are manufactured in a combined process of dispersion and precipitation. Depending upon the combination selected, use of composite titanium dioxide pigment particles of the invention can provide improved optical properties such as tinting strength or permits pigment savings with little to no loss of optical properties. In particular, the composite pigment particles of the invention can be used to replace part or all of the titanium dioxide contained in the user's system.

Abstract: The invention relates to the manufacture of composite pigments containing aluminum hydroxide, and their use for improving the pigment light-scattering efficiency in coatings, plastics, paper and laminates. The composite pigment particles contain pigment particles such as titanium dioxide and precipitated aluminum hydroxide and are manufactured by in-situ precipitation of aluminum hydroxide in an aqueous pigment particle suspension. Use of the composite pigment particles according to the invention, based on titanium dioxide, permits savings on pigment with little or no loss of optical properties. Alternatively, if the pigment content remains unchanged, it is also possible to achieve better optical properties.

Abstract: The invention relates to a method for manufacturing composite particles, particularly composite particles based on titanium dioxide and carbonate, with the help of combined mixing, homogenization and precipitation in a pipeline mixer based on the rotor-stator principle. The method is based on an aqueous suspension of a particulate base component (e.g. titanium dioxide), which is preferably produced in an intermediate vessel equipped with a high-speed agitator. At least one of the required precursor substances and/or a pH-controlling component for precipitating calcium carbonate, for example, is metered into the pipeline mixer, and the calcium carbonate is precipitated. The method can be operated as a continuous process or as a batch process and permits shorter production times. The composite particles produced display homogeneous dispersion of the precipitated particles and the particulate base component.

Abstract: The invention relates to the manufacture of composite pigments containing aluminum hydroxide, and their use for improving the pigment light-scattering efficiency in coatings, plastics, paper and laminates. The composite pigment particles contain pigment particles such as titanium dioxide and precipitated aluminum hydroxide and are manufactured by in-situ precipitation of aluminum hydroxide in an aqueous pigment particle suspension. Use of the composite pigment particles according to the invention, based on titanium dioxide, permits savings on pigment with little or no loss of optical properties. Alternatively, if the pigment content remains unchanged, it is also possible to achieve better optical properties.

Abstract: The invention relates to a method for manufacturing composite particles, particularly composite particles based on titanium dioxide and carbonate, with the help of combined mixing, homogenization and precipitation in a pipeline mixer based on the rotor-stator principle. The method is based on an aqueous suspension of a particulate base component (e.g. titanium dioxide), which is preferably produced in an intermediate vessel equipped with a high-speed agitator. At least one of the required precursor substances and/or a pH-controlling component for precipitating calcium carbonate, for example, is metered into the pipeline mixer, and the calcium carbonate is precipitated. The method can be operated as a continuous process or as a batch process and permits shorter production times. The composite particles produced display homogeneous dispersion of the precipitated particles and the particulate base component.

Abstract: The invention relates to composite pigment particles containing calcium phosphate, their manufacture and their use in coatings, plastics and laminates. The composite pigment particles contain titanium dioxide pigment particles and precipitated calcium phosphate. In one embodiment, the composite pigment particles additionally contain an inorganic and/or organic filler as an extender, preferably selected from the group comprising Ca, Ca—Mg and Mg carbonates, natural and synthetic silicon dioxide and oxides. The composite pigment particles are manufactured in a combined process of dispersion and precipitation. Depending upon the combination selected, use of composite titanium dioxide pigment particles of the invention can provide improved optical properties such as tinting strength or permits pigment savings with little to no loss of optical properties. In particular, the composite pigment particles of the invention can be used to replace part or all of the titanium dioxide contained in the user's system.

Abstract: The invention relates to the manufacture of pigment-containing composite pigment particles containing titanium dioxide pigment particles and at least one inorganic and/or organic filler as extender, as well as calcium carbonate that is precipitated in the process, and their use for improving the pigment light-scattering efficiency in coatings, plastics and laminates. The extender is preferably selected from Ca-, Ca—Mg- and Mg-carbonates, natural and synthetic silicon dioxide and oxides and are manufactured in a combined process of precipitation and dispersion. Depending on the combination selected, the use of composite pigment particles according to the invention permits pigment savings with little or no loss of optical properties. Alternatively, if the pigment content remains unchanged, it is possible to achieve better values, e.g. for tinting strength. Particularly, a part or the whole TiO2 quantity in the user system can be replaced by the composite pigment particles according to the invention.

Abstract: The invention relates to the manufacture of pigment-containing composite pigment particles containing titanium dioxide pigment particles and at least one inorganic and/or organic filler as extender, as well as calcium carbonate that is precipitated in the process, and their use for improving the pigment light-scattering efficiency in coatings, plastics and laminates. The extender is preferably selected from Ca-, Ca—Mg- and Mg-carbonates, natural and synthetic silicon dioxide and oxides and are manufactured in a combined process of precipitation and dispersion. Depending on the combination selected, the use of composite pigment particles according to the invention permits pigment savings with little or no loss of optical properties. Alternatively, if the pigment content remains unchanged, it is possible to achieve better values, e.g. for tinting strength. Particularly, a part or the whole TiO2 quantity in the user system can be replaced by the composite pigment particles according to the invention.

Abstract: The invention is directed to a process for the production of a scratch-resistant vehicle coating comprising the following steps: I. applying a top coat layer of colour- and/or special effect-imparting base coat and a transparent clear coat or of a pigmented one-layer top coat onto a prior coating, II. optionally, applying a sealing layer of a transparent sealing coat onto the top coat layer applied in step I and III.

Abstract: The invention relates to a method for the production of a multilayer structure, comprising the steps 1. applying a functional layer onto an optionally precoated substrate, 2. curing the coating applied in this manner and 3. applying an adhesive onto the cured coating, wherein the functional layer is applied from a water-based coating composition which comprises A) at least one aqueous polymer latex, selected from the group consisting of (meth)acrylate latex, polydiene latex, polydiene copolymer latex, polystyrene latex, nitrile latex and mixtures thereof, and B) at least one amino resin.

Abstract: The invention relates to water-based coating compositions, comprising: A) at least one aqueous (meth)acrylate latex, B) at least one aqueous polymer latex, selected from the group consisting of polydiene latex, polydiene copolymer latex, polystyrene latex, nitrile latex and mixtures thereof, and C) at least one amino resin.

Abstract: The invention relates to modified nanoparticles based on pyrogenic silica which are produced by treating pyrogenic silica with compounds of the general formula I Me(OR1)4, and/or of the general formula II Me(OCOR1)4, wherein R1 means an alkyl, aryl and/or aralkyl residue and Me means zirconium and/or titanium and to coating compositions containing the modified nanoparticles.

Abstract: The invention is directed to a process for the production of a scratch-resistant vehicle coating comprising the following steps: I. applying a top coat layer of colour- and/or special effect-imparting base coat and a transparent clear coat or of a pigmented one-layer top coat onto a prior coating, II. optionally, applying a sealing layer of a transparent sealing coat onto the top coat layer applied in step I and III.

Abstract: A process for the preparation of powder coatings with a controlled surface appearance comprising the steps of applying a powder coating composition onto the substrate surface comprising 1 to 95 wt % of at least one hydrophobic agent, irradiating the applied powder coating composition with high energy radiation having a UV dose in a range of 100 to 5000 mJ/cm2 under near-ambient temperature, fusing, melting and flowing out the particles of the powder coating composition by increased temperature to a molten coating, and curing the molten coating; the process according to the invention makes it possible to provide coatings with a controlled surface appearance as well as to provide coatings having a high mechanical and outdoor stability without a change in formulation of the powder coating composition.

Abstract: The invention relates to modified nanoparticles based on pyrogenic silica which are produced by treating pyrogenic silica with compounds of the general formula I Me(OR1)4, and/or of the general formula II Me(OCOR1)4, wherein R1 means an alkyl, aryl and/or aralkyl residue and Me means zirconium and/or titanium and to coating compositions containing the modified nanoparticles.

Abstract: Coating compositions curable by UV radiation, comprising A) at least one free-radically polymerizable oligomeric and/or polymeric binder containing olefinically unsaturated groups, B) optionally, at least one free-radically polymerizable monomeric reactive diluent containing one or more olefinically unsaturated groups, C) at least one photoinitiator for free-radical polymerization, D) at least one metal compound selected from the group consisting of metal salt compounds containing the metal in the cation and/or anion of the salt compound, organometallic compounds, metal coordination compounds and mixtures thereof, wherein the metal or the metals are selected from the group consisting of a metal from groups 13-14 of the periodic system of elements or a transition metal, which metal or transition metal is able to occur in at least 2 oxidation states other than zero and E) optionally, water, organic solvents, pigments, fillers and/or conventional coating additives, with the proviso that the coating compositions

Abstract: The invention relates to a process of preparation of a powder coating composition providing a desired gloss level of the resulted coatings comprising the following steps of: a) providing particles of a powder coating composition having a number average particle size in the range of 1 to 300 ?m, b) irradiating the particles with high energy radiation under near-ambient temperature, and c) discharging the irradiated particles of the powder coating composition; the process according to the invention provides powder coating compositions producing a desired gloss level of the coatings by varying the time period and the intensity of the UV-irradiation of the powder coating particles in step b).

Abstract: The invention relates to a process of preparation of powder coating compositions providing a desired gloss level of the resulted coatings comprising the following steps of a) providing particles of at least one powder coating composition having a number average particle size in the range of 1 to 300 ?m, and b) mixing these particles with particles of at least one powder coating composition having a number average particle size in the range of 1 to 300 ?m, the particles of which are irradiated with high energy radiation under near-ambient temperature, in a mixing ratio of 1:99 to 99:1; the process according to the invention provides powder coating compositions producing a desired gloss level of the coatings by varying the time period and/or the intensity of the high energy irradiation of the powder coating particles or by varying the mixing ratio between the non-irradiated powder particles and the irradiated powder particles.

Abstract: The invention relates to a process for the preparation of powder coatings with any desired gloss level comprising the following steps of: a) applying the powder coating composition onto the substrate surface, b) irradiating the applied powder coating composition with high energy radiation under near-ambient temperature, c) fusing, melting and flowing out the particles of the powder coating composition by increased temperature to a molten coating, and d) curing the molten coating; the process according to the invention makes it possible to control the gloss of the coating to any level, by varying the time period and the intensity of the UV-irradiation in step b).