Provided is a method for forming a multilayer coating film giving excellent low temperature impact resistance to a substrate that comprises a metal material and a plastic material. The method for forming a multilayer coating film comprises sequential steps of forming an uncured primer coating film, an uncured first colored coating film, an uncured second colored coating film and an uncured clear coating film on a substrate; and heating the same so as to simultaneously cure these 4 coating films, wherein the aqueous first colored paint and aqueous second colored paint are each a 1-package type paint composition containing a specific hydroxyl group-containing resin and a specific blocked polyisocyanate compound.

The present invention aims to provide a method of producing a fine particulate inorganic oxide dispersion, which makes it possible to easily disperse a fine particulate inorganic oxide while reducing the amount of dispersant used. The present invention relates to a method of producing a fine particulate inorganic oxide dispersion, the method including mixing the following components (A) to (D): (A) at least one fine particulate inorganic oxide selected from the group consisting of zirconium oxide (ZrO.sub.2), titanium oxide (TiO.sub.2), and barium titanate (BaTiO.sub.3), (B) a dispersant, (C) an alkoxysilane compound, and (D) a solvent having the following Hansen solubility parameters: a hydrogen bonding component (dH) of 11 or less and a polar component (dP) of 4 or more; and wet grinding the resulting mixture.

A method for manufacturing low effective density TiO.sub.2 includes providing a template having a surface. The template surface is coated with a titanium-containing compound that can be reduced to TiO.sub.2 at high temperature. The template is removed, thereby forming porous TiO.sub.2 particles. The effective density of the porous TiO.sub.2 particles is less than 4.

The invention relates to aqueous, cationically stabilized primary dispersions comprising dispersed polymer particles that have a Z-average particle diameter of 5 to 500 nm and are obtainable by emulsion polymerization of at least one olefinically unsaturated monomer (A), wherein the emulsion polymerization takes place in the presence of one or more emulsifiers (E) having the following general formula: R.sup.1(R.sup.2)(R.sup.3), where: R is a moiety that contains at least one aromatic group and at least one aliphatic group, has 15 to 40 carbon atoms, and contains at least one functional group selected from hydroxy groups, thiol groups, and primary or secondary amino groups and/or comprises at least one carbon-carbon multiple bond; and R.sup.1, R.sup.2, and R.sup.3 are, independently of each other, identical or different aliphatic moieties having 1 to 14 carbon atoms. The invention also relates to a method for producing the primary dispersions, coating agents comprising the primary dispersions, use of the primary dispersions to produce electrocoats, and conductive substrates that have been coated with the coating agent compositions.

The objective of the present invention is to provide a method for preparing a cationic electrodeposition coating composition that contains a bismuth compound and exhibits excellent coating material stability, curability, coating film appearance and the like. The present invention provides a method for preparing a cationic electrodeposition coating composition, which comprises a step for mixing a resin emulsion (i) and a pigment-dispersed paste, and wherein: the resin emulsion (i) contains an aminated resin (A) and a blocked isocyanate curing agent (B); the pigment-dispersed paste contains a bismuth mixture (C) that is obtained by mixing a bismuth compound (c1) and an organic acid (c2) in advance, a pigment-dispersed resin (D), an amine-modified epoxy resin emulsion (ii) that contains an amine-modified epoxy resin (E), and a pigment (F); the pigment-dispersed resin (D) has a hydroxyl number of 20-120 mgKOH/g; and the amine-modified epoxy resin (E) has a hydroxyl number of 150-650 mgKOH/g.

The invention provides an organic solvent dispersion of titanium oxide particles in a content of 10% by weight or more in an organic solvent except methanol and ethanol,

wherein the titanium oxide particles are surface-treated with a surface treating agent comprising a silane coupling agent having the general formula (I)

(RO).sub.nSiX.sub.4-n (I)

wherein R is an alkyl group having carbon atoms of 1-4, n is 2 or 3, X is an alkyl, a fluoroalkyl, a vinyl or a (meth)acryloyloxyalkyl group, and 12-hydroxystearic acid, and

wherein the titanium oxide particles in the organic solvent have a D50 in a range of 1 to 30 nm, and

wherein the organic solvent dispersion has a transmittance of 2% or more at a wavelength of 500 nm and a transmittance of 70% or more at a wavelength of 800 nm, a viscosity of 10 mPa.Math.s or less at a temperature of 25 C. immediately after production while the increase in the viscosity is 40 mPa.Math.s or less seven days after production as compared to that of the dispersion immediately after production.

An effect pigment preparation comprises an effect pigment, a dispersive additive, and a passivating agent. The preparation is dry, the pigment comprises about 84% or more of the mass of the preparation, the dispersive additive comprises up to 15% of the mass of the preparation, and the number of theoretical layers of the passivating agent is from about 2 to about 12. The effect pigment preparation is non-dusting and can be easily stirred into aqueous, solvent, or UV curing-based liquid coatings formulations.

A white pigment dispersion includes 10 to 60 wt % of low effective density TiO.sub.2, 1 to 40 wt % of a latex, and the balance a dispersing medium. Inks using the low effective density TiO.sub.2 and methods for preparing the low effective density TiO.sub.2 are also disclosed.

The present invention relates to a composition comprising an aqueous dispersion of polymer encapsulated TiO.sub.2 composite particles and an organic matting agent, as well as a method for making the composition. The composition of the present invention is useful for coating compositions to improve mar resistance of coatings.

A pigment mixture comprising at least two or three interference pigments of different interference colours selected from the colours red, green and blue, suitable for use in paints, coatings, printing inks, security printing inks, plastics, ceramic materials, glasses and in the preparation of pigment preparations, dry preparations and in particular cosmetic formulations.