The present invention relates to a polymeric aromatic amide dispersant, and a composition containing a particulate solid, an aqueous or polar organic medium, and a polymeric aromatic amide dispersant having at least one tertiary amide linking group connecting through a carbonyl group of the amide to an aromatic ring having a residual carboxylic acidic group thereon. The invention further provides compositions for millbases, dispersions, coatings and inks.

The present invention relates to a polymeric dispersant containing an tertiary amide linkage between the aromatic anchoring group and a solubilizing chain, and a composition containing a particulate solid, an aqueous or polar organic medium, and a polymeric aromatic amide dispersant having at least one tertiary amide linking group connecting through a carbonyl group of the amide to an aromatic ring having two or more residual carboxylic acid groups or a sulfonic acid group and a residual carboxylic acidic group thereon. The invention further provides compositions for millbases, dispersions, coatings and inks containing said dispersant.

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.

In these metal oxide microparticles, surfaces of microparticles of a metal oxide are modified by a fatty acid having 5 or more and 14 or less carbon atoms and having a branched chain, the metal oxide is metal oxides of a plurality of kinds of metals selected from the group consisting of Zn, In, Sn, and Sb, and an average particle diameter of the microparticles is 80 nm or less. In a dispersion for forming an infrared-shielding film, the metal oxide microparticles are dispersed in a hydrophobic solvent, and a light transmittance in a wavelength range of 800 nm to 1,100 nm is 20% or more and less than 70%.

Disclosed herein is an additive for a paint or stain composition or for a colorant composition. The additive is polymerized from at least one acrylate monomer and a chain transfer agent. The additive has a weight molecular weight from about 2,000 Daltons to about 5,000 Daltons, and the chain transfer agent comprises a hydrogen-sulfur functionality and is present from about 8 to about 20 parts per hundred parts of monomers. The additive's glass transition temperature ranges from about −50° C. to about −10° C. and the additive is hydrophobic. The additive is added to the colorant composition to minimize tip drying at the colorant canisters, and is added to paint or stain composition as an open time extender.

A dispersion liquid contains antimony-doped tin oxide (ATO) particles and a solvent, a content of the antimony-doped tin oxide particles is 40% by mass or more, a volume average particle diameter of the antimony-doped tin oxide particles is 90 nm or less, and, in a color space by the L*a*b* color system, an L* value is 13.0 or less, an a* value is −2.0 or more and 0.0 or less, and a b* value is −13.0 or more and −10.0 or less.

A composition including a first color shifting pigment flake population having a first D50 particle size; and a second color shifting pigment flake population having a second D50 particle size that is different from the first D50 particle size, wherein the first color shifting pigment flake population and the second color shifting pigment flake population have a similar face color and color shift is disclosed. An article including the composition is included. A method of making the composition and a method of making the article are also disclosed.

Disclosed is an acrylic resin and a metal fine particle dispersion including the acrylic resin. The acrylic resin contains a unit of a (meth)acrylate monomer A having a polyalkylene glycol moiety and has at least at one end a carboxylic acid group and/or a carboxylic acid salt group.

A point-of-sale custom color system for tinting base paints and stains includes an array of powdered colorants, including at least white, green, blue and red colorants, which can be used to tint water-borne paints and stains. When tinting solvent-borne base paints or stains, a synergist containing one or more cosolvents, dispersing agents or surfactants is added to or is a part of the solvent-borne base paint or stains, and enables effective tinting using the powdered colorants.

This invention provides a polymer thick film dielectric paste composition, comprising a mixture of titanium dioxide and boron nitride powders, a resin blend of polyol and phenoxy resin, one or more additives selected from the group consisting of a linear aliphatic polyester, a block copolymer, a blocked aliphatic polyisocyanate, and a wetting and dispersing agent, and one or more polar, aprotic solvents. The paste composition may be used to form polymer thick film dielectric layers in electrical circuits subject to thermoforming and in articles requiring stretchable dielectric layers such as wearables.