A metallic effect pigment with an additive, the additive being applied on at least a portion of the metallic effect pigment. The additive comprises, as structural units, at least one carboxylic acid having at least 4 carbon atoms and also at least one polyglycol ether. The carboxylic acid and the polyglycol ether are bonded covalently to one another. The disclosure is also directed to a method for producing these metallic effect pigments, and to the use thereof, as well as to a printing ink comprising the pigments.

A colorant including a mixture of pigments is disclosed. The pigments have a similar coloration but different resistance to corrosion. The mixing ratio is selected to optimize the corrosion resistance against color brightness, and/or acidic corrosion resistance against alkali corrosion resistance of the colorant.

A bismuth vanadate pigment is provided which pigment is doped with a combination of Mg, Al and P and optionally an element E, wherein the molar ratios of the Bi, V, Mg, Al, P and E correspond to a formula
Bi Mg.sub.a Al.sub.b E.sub.c V.sub.d P.sub.e O.sub.f(I)
wherein E is selected from the group consisting of Be, Ca, Sr, Ba, Zr, Mo, Ce and a combination thereof; 0.001a0.2; 0.001b0.2; 0c1.7; 0.5d2.3; 0.001e0.5; and f denotes the number of oxygen atoms for satisfying the valence requirements of the cations. The pigment may be used as colorant in various applications, especially in coloring high molecular weight organic material, for example, coating compositions, paints, printing inks, liquid inks, plastics, films, fibers, or glazes for ceramics or glass.

A nano-composite structure. A synthetic nano-composite is described having a first component including a fibrous structured amorphous silica structure, and a second component including a precipitated calcium carbonate structure developed by pressure carbonation. The nano-composite may be useful for fillers in paints and coatings. Also, the nano-composite may be useful in coatings used in the manufacture of paper products.

Paper, paperboard, or label stock coated with a synthetic nano-composite coating. A synthetic nano-composite coating includes a first component including a fibrous structured amorphous silica structure, and a second component including a precipitated calcium carbonate structure developed by pressure carbonation.

A bright pigment of the present invention is a bright pigment including flaky particles and a metal oxide layer covering each surface of the flaky particles. The bright pigment has a particle diameter corresponding to a 90% volume-cumulative particle diameter from a small particle diameter side, in a particle size distribution, of 55 m or less. The flaky particles are formed of a material having a refractive index of 1.4 to 1.8. The flaky particles have an average thickness of 0.35 to 0.55 m and substantially do not contain flaky particles having a thickness of 0.15 m or less.

A nano-composite structure. A synthetic nano-composite is described having a first component including a fibrous structured amorphous silica structure, and a second component including a precipitated calcium carbonate structure developed by pressure carbonation. The nano-composite may be useful for fillers in paints and coatings. Also, the nano-composite may be useful in coatings used in the manufacture of paper products.

The current technology is directed to red and red-shade violet pigments with an hexagonal ABO.sub.3 structure of the form Y(In, M)O.sub.3 in which M is substituted for In in the trigonal bipyramidal B site of the ABO.sub.3 structure, and where M is a mixture containing Co.sup.2+ and charge compensating ions, or M is a mixture containing Co.sup.2+ and charge compensating ions, as well as other aliovalent and isovalent ions.

The present invention relates to a golden interference pigment which is suitable, in particular, for printing processes, to a process for the preparation of a pigment of this type, and to the use thereof.

Paper, paperboard, or label stock coated with a synthetic nano-composite coating. A synthetic nano-composite coating includes a first component including a fibrous structured amorphous silica structure, and a second component including a precipitated calcium carbonate structure developed by pressure carbonation.