The invention concerns a pigmentary preparation having universality of use in tinting plastics.

The invention is related with the paint industry to use on surfaces of solid materials. The invention is a process to obtain paints using expanded polystyrene (EPS) waste as a raw material. From this technology we pursue to transform a waste into a useful product, saving resources and at the same time contributing to solve environmental contamination problems. This invention is composed by the following stages, a.-mixing the EPS waste with an organic solvent until reaching a concentration between 20% and 80% p/p; decanting impurities of the mixture obtained in stage (a) during 24 to 120 h; c.-collecting the supernatant obtained in stage (b); d.-dispersing a pigment in the supernatant obtained in stage (c) during 10 to 30 min at a velocity between 1.000 rpm and 2.000 rpm; e.-mixing the substance obtained in stage (d) with an organic solvent at a velocity between 300 rpm and 1.000 rpm until reaching the desired concentration. Additionally, the invention claims the formulation of a paint that is formed by 0% to 40% of pigment, 70% to 1% of EPS, 0.5% to 5.0% of dispersant, and the difference is solvent.

The present invention is a composition comprising an aqueous dispersion of metal oxide pigment particles coated with a polymer comprising structural units of an alkyltrihydroxysilane or a salt thereof and a dialkyldihydroxysilane or a salt thereof. The composition of the present invention provides hydrophobicity to pigment particles, thereby imparting water resistance, and allows for high loadings of pigment in water without increased viscosity.

The invention relates to a matting agent comprising agglomerates of pigment particles, to a method for the preparation of such matting agents, and to coating formulations containing the matting agents disclosed herein. The present invention further relates to pigmented mat surfaces, and to the use of agglomerates of pigment particles for matting pigmented coatings.

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 method for increasing a detection distance of a surface of an object illuminated by near-IR electromagnetic radiation, including: (a) directing near-IR electromagnetic radiation from a near-IR electromagnetic radiation source towards an object at least partially coated with a near-IR reflective coating that increases a near-IR electromagnetic radiation detection distance by at least 15% as measured at a wavelength in a near-IR range as compared to the same object coated with a color matched coating which absorbs more of the same near-IR radiation, where the color matched coating has a ?E color matched value of 1.5 or less when compared to the near-IR reflective coating; and (b) detecting reflected near-IR electromagnetic radiation reflected from the near-IR reflective coating. A system for detecting proximity of vehicles is also disclosed.

A titanium dioxide pigment composition for use in a waterborne latex paint formulation is provided. The pigment composition comprises a plurality of titanium dioxide particles, and a dispersant package deposited on the surfaces of said titanium dioxide particles in an amount of no greater than about 5% by weight based on the combined weight of the titanium dioxide particles and the dispersant package. A titanium dioxide pigment composition slurry, a method of forming a titanium dioxide pigment composition, and a method of forming a titanium dioxide pigment composition slurry, all for use in a waterborne latex paint formulation, are also provided.

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.

Provided are a dispersion liquid and a composition which have excellent particle dispersibility and make it possible to manufacture a film having a high color valency. Also provided are a film, a manufacturing method of a film, and a dispersant. The dispersion liquid contains particles, a solvent, and a dispersant. The dispersant has a particle adsorption portion and a solvophilic portion, and the solvophilic portion includes a moiety which is decomposed or denatured by an external stimulus.

A dispersion that inorganic oxide microparticles may be dispersed at a high concentration in a solvent, a composition for film formation having high transparency, high refractive index and adhesion to a base layer. Inorganic oxide microparticles wherein an amphiphilic organosilicon compound having one or more selected from a polyoxyethylene group, a polyoxypropylene group, or a polyoxybutylene group as a hydrophilic group, and one or more selected from a C.sub.1-18 alkylene group or a vinylene group as a hydrophobic group bonded to a surface of modified metal oxide colloidal particles (C) having a primary particle diameter of 2 to 100 nm, the modified metal oxide colloidal particles wherein a surface of metal oxide colloidal particles (A) having a primary particle diameter of 2 to 60 nm as a nucleus is coated with a coating material (B) including metal oxide colloidal particles having a primary particle diameter of 1 to 4 nm.