Modified pigments and use thereof

Abstract

A modified organic pigment can be used to make a coating composition, such as a paint, a varnish, or a printing ink. The modified organic pigment is obtained by reacting the pigments during the pigment synthesis with at least one interface-active compound, where the interface-active compound is a compound within a three-dimensional Hansen space determined by three coordinates, Hansen solubility parameters (HSPs), D=18.21, P=8.44, H=13.16 with a radius of 6.7 units about a center of the three-dimensional Hansen space, determined with the aid of the HSPiP software, version 5.0.0.4.

1 . A modified organic pigment,
 obtained by reacting an organic pigment during organic pigment synthesis with at least one interface-active compound,   wherein the interface-active compound is a compound within a three-dimensional Hansen space determined by three coordinates, Hansen solubility parameters (HSPs), D=18.21, P=8.44, H=13.16 with a radius of 6.7 units about a center of the three-dimensional Hansen space,   determined with the aid of the HSPiP software, version 5.0.0.4.   
     
     
         2 . The modified organic pigment according to  claim 1 , wherein
 the interface-active compound is at least one member selected from the group consisting of a chemical amphiphilic compound of low molecular weight, a chemical amphiphilic compound of high molecular weight, an ionic compound of low molecular weight, an ionic compound of high molecular weight, a nonionic compound of low molecular weight, and a nonionic compound of high molecular weight.   
     
     
         3 . The modified organic pigment according to  claim 1 , wherein
 the interface-active compound is at least one member selected from the group consisting of a polyether-modified fatty acid, a polyether-modified fatty acid amide amine, a polyether-modified amine derivative, a Jeffamine derivative, a polyether-modified oil and fat, and a derivative of a polyether-modified oil and fat.   
     
     
         4 . The modified organic pigment according to  claim 1 , wherein the interface-active compound is a phosphorylated polyether derivative. 
     
     
         5 . The modified organic pigment according to  claim 1 , wherein
 the interface-active compound is at least one member selected from the group consisting of a polyether-modified styrene-maleic acid copolymer and a maleate resin.   
     
     
         6 . The modified organic pigment according to  claim 1 ,
 the surface-active compound has one or more functionalities having an affinity for a surface of the organic pigment.   
     
     
         7 . The modified organic pigment according to  claim 1 , wherein
 the organic pigment is at least one member selected from the group consisting of an azo pigment, a diazo pigment, a condensed azo pigment, a naphthol pigment, a metal complex pigment, a thioindigo pigment, an indanthrone pigment, an isoindanthrone pigment, an anthanthrone pigment, an anthraquinone pigment, an isodibenzanthrone pigment, a triphendioxazine pigment, a quinacridone pigment, a perylene pigment, a diketopyrrolopyrrole pigment, and a phthalocyanine pigment.   
     
     
         8 . The modified organic pigment according to  claim 1 , which comprises 5% to 50% by weight of the interface-active compound, based on 100% by weight of the modified organic pigment. 
     
     
         9 . A process for producing the modified organic pigment according to  claim 1 , the process comprising:
 1) synthesizing a crude pigment;   2) working up the crude pigment by washing and filtration;   3) drying the crude pigment; and   4) adding the interface-active compound during said 1) synthesizing, after said 1) synthesizing, after said 2) working up, or before said 3) drying.   
     
     
         10 . The process according to  claim 9 , wherein
 said 4) adding takes place before said 3) drying.   
     
     
         11 . The process according to  claim 9 , wherein
 said 4) adding is conducted in an aqueous solution.   
     
     
         12 . A process of making a pigment preparation, the process comprising:
 mixing the modified organic pigment according to  claim 1  into a pigment precursor composition.   
     
     
         13 . A composition, comprising:
 the modified organic pigment according to  claim 1 ,   wherein the composition is selected from the group consisting of a paint, a varnish, a printing ink, a coating material, a floor coating, a potting compound, and a filling compound.   
     
     
         14 . A process of making the composition according to  claim 13 , the process comprising:
 mixing the modified organic pigment in a member selected from the group consisting of a paint precursor composition, a varnish precursor composition, a printing ink precursor composition, a coating material precursor composition, a floor coating precursor composition, a potting compound precursor composition, and a filling compound precursor composition.   
     
     
         15 . The modified organic pigment according to  claim 1 , which comprises 10% to 40% by weight of the interface-active compound, based on 100% by weight of the modified organic pigment. 
     
     
         16 . The modified organic pigment according to  claim 1 , which comprises 14% to 35% by weight of the interface-active compound, based on 100% by weight of the modified organic pigment. 
     
     
         17 . The process according to  claim 9 , wherein
 said 4) adding is conducted in an alkaline solution.