Abstract:
The use of an effect pigment (a) comprising an aluminum-based substrate and an iron oxide coating having a red 1st order interference color in combination with a colored absorption pigment (b) for producing a coating having enhanced coloristic properties, in particular enhanced chroma, lightness and hiding power, is provided. The pigment combination of (a) and (b) is suitable for coloring plastics, a fiber, a film and a coating composition such as a paint, a printing ink, a varnish or a powder coating, preferably an automotive, an architectural or an industrial coating composition.
Abstract:
The invention relates to the use of mica, which is coated with at least one metal oxide, as a flame retardant, and to thermoplastic molding materials provided therewith.
Abstract:
An inorganic red pigment is provided which pigment comprises titanium oxide, tin oxide, zinc oxide, and tungsten oxide, wherein the molar ratios of the oxides correspond to a composition of formula (TiO2)a(SnOx)b(ZnO)c(WO3)d (I), wherein SnOx comprises SnO and SnO2 in a molar ratio of SnO:SnO2 of from 70:30 to 100:0; 0.8≦̸a≦̸3.0; 0.3≦̸b≦̸2.0; 0.3≦̸c≦̸1.3; and 0.01≦̸d≦̸0.8. Optionally, SiO2, other metal oxides or metal sulfides may be present. The inorganic pigment may be used as colorant in various applications.
Abstract:
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 Mga Alb Ec Vd Pe Of (I) wherein E is selected from the group consisting of Be, Ca, Sr, Ba, Zr, Mo, Ce and a combination thereof; 0.001≦̸0.2; 0.001≦̸b≦̸0.2; 0≦̸c≦̸1.7; 0.5≦̸d≦̸2.3; 0.001≦̸e≦̸0.5; 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.
Abstract:
The present invention relates to a process for preparing a colored effect pigment, comprising: (i) coating aluminum-based substrate particles in an aqueous coating medium with at least one metal oxide layer, wherein the metal oxide is selected from a titanium oxide, an iron oxide, or any mixture thereof, (ii) providing a mixture of the coated aluminum-based substrate particles and a particulate inorganic non-metallic material in the aqueous coating medium by adding the particulate inorganic non-metallic material to the aqueous coating medium, and (iii) separating the mixture of the coated aluminum-based substrate particles and the particulate inorganic non-metallic material from the aqueous coating medium and subjecting the separated mixture to a thermal drying step so as to obtain a dry colored effect pigment material.
Abstract:
An inorganic red pigment is provided which pigment comprises titanium oxide, tin oxide, zinc oxide, and tungsten oxide, wherein the molar ratios of the oxides correspond to a composition of formula (TiO 2 ) a (SnO x ) b (ZnO) c (WO 3 ) d (I), wherein SnO x comprises SnO and SnO 2 in a molar ratio of SnO : SnO 2 of from 70:30 to 100:0; 0.8 ≤ a ≤ 3.0; 0.3 ≤ b ≤ 2.0; 0.3 ≤ c ≤ 1.3; and 0.01 ≤ d ≤ 0.8. Optionally, SiO 2 , other metal oxides or metal sulfides may be present. The inorganic pigment may be used as colorant in various applications.
Abstract:
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 Mga Alb Ec Vd Pe Of (I) wherein E is selected from the group consisting of Be, Ca, Sr, Ba, Zr, Mo, Ce and a combination thereof; 0.001≦̸0.2; 0.001≦̸b≦̸0.2; 0≦̸c≦̸1.7; 0.5≦̸d≦̸2.3; 0.001≦̸e≦̸0.5; 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.
Abstract:
Described are thin plane-parallel aluminum flakes illustrated in Fig. 1 having a thickness of up to 200 nm and comprising an inner layer of oxidized aluminium having a thickness of 0.5 - 30 nm, a process for the manufacture thereof and the use thereof, e.g. in formulations, like paints, electrostatic coatings, printing inks, plastics materials, and cosmetics. Surprisingly, due to the inner layer of oxidized aluminum the aluminum flakes have an improved shear stability as evidenced e.g. by the difference in lightness before and after shear stress.