The purpose of the present invention is to provide a plasma spray material which is capable of forming a hydroxyapatite film that exhibits high adhesion strength with respect to substrates such as metal substrates. When used as a plasma spray material, hydroxyapatite powder having a modal diameter of 550-1000 nm in a pore diameter of at most 5000 nm as measured by a mercury intrusion method is capable of forming a hydroxyapatite film that exhibits high adhesion strength with respect to substrates such as metal substrates.

A method for producing a powder coating that can include receiving effect pigment particles and powder coating particles, mixing the effect pigment particles with the powder coating particles where the mixing includes imparts acoustic energy to the effect pigment particles and the powder coating particles, heating the effect pigment particles and the powder coating particles where the heating bonds the effect pigment particles to the powder coating particles, and cooling the bonded effect pigment particles and the powder coating particles.

A mica-containing pigment composition having spherical particles composed primarily of polyester and mica for use in electrostatic powder coating applications. The particles are produced by precipitation under shear stress from a solution containing mica and a polyester resin.

To provide a powder coating material excellent in blocking resistance and capable of forming a coating film excellent in color tone and weather resistance in which the occurrence of color unevenness is suppressed, a method for its production, and a coated article having a coating film formed from the powder coating material. The powder coating material comprises a resin powder, a luster pigment and a binder, wherein the resin powder contains a fluororesin and a non-fluororesin, the binder contains a surfactant having a melting point of at least 25 C., and the luster pigment is bonded to the particle surfaces of the resin powder via the binder.

The invention relates to a powder paint comprising at least one base powder paint and at least one effect powder paint having effect pigments, said effect pigments being dispersed in a melt made from transparent effect powder paint. The invention also relates to a method for producing said type of powder paint and to an effect powder coating containing said type of powder paint.

The present invention concerns a material, based on fibrillar, elongated, or disk-like colloidal particles, that has a high scattering efficiency, a method that is suitable for preparing such a material, and the use of such a material. The material can be used as, or as a part of, a pigment, paint or protective coating in various industries, but due to its high scattering, and due to the fact that the material appears white even as a thin membrane, it is an interesting option also in the paper and pulp, cosmetic and medical industries.

The invention relates to a branched carboxylic acid functional polyester resin P1 as described herein. The invention further relates to a thermosetting powder coating composition (PCC A1) comprising a binder K1, said binder K1 comprising the P1 and a crosslinker X1. The invention further relates to a cured PCC A1. The invention further relates to a process for making said PCC A1 and processes for coating an article with said PCC A1. The invention further relates to an article having coated thereon said PCC A1 as well as to an article having coated and cured thereon said PCC A1. The invention further relates to a thermosetting powder coating composition B (PCC B) comprising a physical mixture of the thermosetting powder coating composition A1 (PCC A1) with a separate, distinct thermosetting powder coating composition A (PCC A). The invention further relates to a process for making said thermosetting powder coating composition B and processes for coating an article with said PCC B. The invention further relates to a cured PCC B. The invention further relates to an article having coated thereon said thermosetting powder coating composition B as well as to an article having coated and cured thereon said thermosetting powder coating composition B. The invention further relates to use of: the polyester resin P1, the PCC A1, the cured PCC A1, the PCC B, the cured PCC B, articles coated with the PCC A1, articles coated with the PCC B, articles having coated and cured thereon the PCC A1, articles having coated and cured thereon the PCC B. The invention further relates to the use of the polyester resin P1 for matt powder coatings. The invention further relates to the use of the PCC B for matt powder coatings.

The invention relates to coated effect pigments, wherein the coating comprises a binder which is suitable for powder paints. They comprise a crystalline and an amorphous fraction which is determined by C.sup.13 NMR MAS relaxation measurements, the relaxation of the .sup.13C cores being fitted as a biexponential relaxation according to the formula (II) and the degree of crystallinity c being in a range between 40 to 85%, and relaxation having a short average relaxation time T.sub.1.sup.S and a long average relaxation time T.sub.1.sup.I, and T.sub.1.sup.I being in a range of from 65 to 130 s. The effect pigments coated according to the invention have at least one endothermic peak with a maximum from a range of T.sub.max=100 to 150 C. and an enthalpy H associated with said peak from a range of 15 J/g to 80 J/g in DSC at a feed speed of 5 C./min, the enthalpy being calculated relative to the amount of the binder. The binders are applied to the effect pigment by way of spontaneous precipitation.

[00001]$\begin{array}{cc}M\left(t,M_0,a,c,T_1^s,T_1^l\right)=M_0.Math.\left[\left(1-c\right).Math.\left(1-a.Math.e^{-\left(\frac{t}{T_1^s}\right)}\right)+c.Math.\left(1-a.Math.e^{-\left(\frac{t}{T_1^l}\right)}\right)\right]& \left(\mathrm{II}\right)\end{array}$

The invention relates to a thermosetting powder coating composition B (PCC B) comprising a physical mixture of a thermosetting powder coating composition A (PCC A) with a separate, distinct thermosetting powder coating composition A1 (PCC A1). The invention further relates to a process for making said thermosetting powder coating composition B and processes for coating an article with said PCC B. The invention further relates to a cured PCC B. The invention further relates to an article having coated thereon said thermosetting powder coating composition B as well as to an article having coated and cured thereon said thermosetting powder coating composition B. The invention further relates to use of: the PCC B, the cured PCC B, articles coated with the PCC B, articles having coated and cured thereon the PCC B. The invention further relates to the use of the PCC B for matt powder coatings.

A particulate coating composition, and preferably a powder coating composition, comprising: (i) at least one polyester polymer; (ii) at least one hardener; (iii) at least 0.1 wt % of at least one metallic pigment; and (iv) at least one polyorganosiloxane.