Abstract: The present invention is directed to a coated bismuth oxy halide-based pigment having a coating comprising an anti-oxidant, said antioxidant is being a phenol based, a phosphite or phosphonate based, or a thioether based stabilizer, and the coating comprising an inner coating and an outer coating, wherein the outer coating comprises the antioxidant, and wherein the inner coating comprises a first layer consisting of one or more salts, or one or more oxides, heteropolyacids, organic acids, sulphites, sulfides, sulfates, phosphates, pyrophosphates, polyphosphates, hydrates, carbonates, or a combination thereof, selected from the group of alkali-earth metals, metals, non-metals, transition metals or lanthanides. Further, the present invention is directed to a composition comprising a paint, a lacquer, an ink, a cosmetic, a resin, a plastisol or a polymer formulation, and such pigment.

Abstract: The present invention is directed to a method for manufacturing a bismuth based pigment having an improved alkaline resistance, the method comprising: i) obtaining a dried bismuth based pigment; ii) encapsulation of the bismuth based pigment using a chelating agent; iii) final processing of the encapsulated pigment; and v) drying of the pigment. In addition, the present invention is directed to a bismuth based pigment encapsulated by a layer of chelating agent.

Abstract: The present invention is directed to a method for manufacturing a bismuth vanadate pigment having an improved alkaline resistance, the method comprising: i) obtaining a dried bismuth vanadate pigment; ii) encapsulation of the bismuth vanadate pigment using a functionalized silane of the general formula R—Si(OR?)3 wherein R is an alkyl group; and R? is a methyl or ethyl group; iii) final processing of the encapsulated pigment; and v) drying of the pigment. In addition, the present invention is directed to a bismuth vanadate pigment encapsulated with a functionalized silane of the general formula R—Si(OR?)3 wherein R is an alkyl group; and R? is a methyl or ethyl group.

Abstract: A method for manufacturing an azoic pigment is disclosed, according to an illustrative embodiment of the present invention. The method includes producing slurry of the azoic pigment. The slurry includes primary aromatic amine (PAA). The method further includes the derivatization of the residual PAA in the slurry, followed by encapsulation of the slurry. The slurry is acidified or basified. Finally, the slurry is further processed, thereby forming PAA migration free azoic pigment. The derivatization and encapsulation additively or synergistically reduce the PAA content thereby inhibiting migration of PAA from the pigment into a substrate onto which the pigment is loaded.

Abstract: The present invention is directed to a method for manufacturing a bismuth based pigment having an improved alkaline resistance, the method comprising: i) obtaining a dried bismuth based pigment; ii) encapsulation of the bismuth based pigment using a chelating agent; iii) final processing of the encapsulated pigment; and v) drying of the pigment. In addition, the present invention is directed to a bismuth based pigment encapsulated by a layer of chelating agent.

Abstract: A method for manufacturing an azoic pigment is disclosed, according to an illustrative embodiment of the present invention. The method includes producing slurry of the azoic pigment. The slurry includes primary aromatic amine (PAA). The method further includes the derivatization of the residual PAA in the slurry, followed by encapsulation of the slurry. The slurry is acidified or basified. Finally, the slurry is further processed, thereby forming PAA migration free azoic pigment. The derivatization and encapsulation additively or synergistically reduce the PAA content thereby inhibiting migration of PAA from the pigment into a substrate onto which the pigment is loaded.

Abstract: The present invention is directed to a coated bismuth oxy halide-based pigment having a coating comprising an anti-oxidant, said antioxidant is being a phenol based, a phosphite or phosphonate based, or a thioether based stabilizer, and the coating comprising an inner coating and an outer coating, wherein the outer coating comprises the antioxidant, and wherein the inner coating comprises a first layer consisting of one or more salts, or one or more oxides, heteropolyacids, organic acids, sulphites, sulfides, sulfates, phosphates, pyrophosphates, polyphosphates, hydrates, carbonates, or a combination thereof, selected from the group of alkali-earth metals, metals, non-metals, transition metals or lanthanides. Further, the present invention is directed to a composition comprising a paint, a lacquer, an ink, a cosmetic, a resin, a plastisol or a polymer formulation, and such pigment.

Abstract: The present invention relates to novel phosphonic acid compounds having the structural formula (I): wherein: (a) R is a group of 1 to 5 substituents independently selected from the group consisting of fluoro, chloro, bromo, C1-4 alkoxy, C1-4 alkyl, hydroxy, formyl, trifluoromethoxy, phenyl, heterocyclic, heterocyclic-substituted methyl, aminomethyl, hydroxy methyl, bromomethyl, sulfonyl chloride, acetyl chloride, nitroso and cyano, (b) R1 is selected from the group consisting of hydrogen, C1-7 alkyl, C3-10 cycloalkyl, aryl, arylalkyl and heterocyclic, and (c) R2 is selected from the group consisting of hydroxy and hydroxy-protecting groups, and stereoisomer, solvates and salts thereof. These compounds are useful as anti-infectious and anti-parasitic agents, in particular anti-malaria agents.

Abstract: The present invention relates to novel phosphonic acid compounds having the structural formula (I): wherein: (a) R is a group of 1 to 5 substituents independently selected from the group consisting of fluoro, chloro, bromo, C1-4 alkoxy, C1-4 alkyl, hydroxy, formyl, trifluoromethoxy, phenyl, heterocyclic, heterocyclic-substituted methyl, aminomethyl, hydroxy methyl, bromomethyl, sulfonyl chloride, acetyl chloride, nitroso and cyano, (b) R1 is selected from the group consisting of hydrogen, C1-7 alkyl, C3-10 cycloalkyl, aryl, arylalkyl and heterocyclic, and (c) R2 is selected from the group consisting of hydroxy and hydroxy-protecting groups, and stereoisomer, solvates and salts thereof. These compounds are useful as anti-infectious and anti-parasitic agents, in particular anti-malaria agents.