LIQUID CONCENTRATE OF SOLID PARTICLES OF HYBRID PIGMENTS CONTAINING GRAFT COPOLYMERS AND THE USE THEREOF FOR THE PREPARATION OF PAINTS IN AQUEOUS AND / OR ORGANIC MEDIA

摘要

The invention relates to a liquid concentrate of inorganic and organic hybrid solid particle pigments of 0.5 to 2 μm, comprising a copolymer consisting of: 1/5 to 40%, in mass content of the anchoring sequence (s) constituted by a linear copolymer consisting of at least a first monomer with a basic nitrogen group introduced from one or more compound (s) chosen from vinylpyridine and preferably aminoalkyl (meth) acrylate, and b / a second monomer of the anchoring sequence consists of an ethylenic monomer comprising an aromatic group, the mass content of said first monomer relative to said second monomer being 40 to 60%, and 2/25 to 90%, of mass content of said hydrophobic block (s) obtained from a polymer-substituted ethylenic macromonomer whose monomeric units comprise groups - COOR10 in which Rio is a C1-C10 alkyl optionally substituted, preferably C2-C8 alkyl optionally substituted with hydroxyl, and 3 / from 5 to 70% hydrophilic block (s) mass content (s) obtained from an ethylenic macromonomer substituted with a hydrophilic sequence comprising a polyethylene glycol sequence (a) substituted with an alkoxy terminal group or (b) linked to a polypropylene glycol block.