Additive for coatings containing metallic nanoparticles

An additive to be incorporated in coatings which transfer to surfaces at least one of the following properties:

• biocidal, ultraviolet radiation protection and fire protection, said additive comprising:
• an active agent being metal nanoparticles, a solvent (vehicle), a dispersant and a resin, wherein:
• the active agent has an average particle size in the range from 1 nanometer to 100 nanometers and a purity of at least 95%,
• wherein the resin comprises one selected of:
• stabilized alkydalyl or nitro-cellulose, and the dispersant comprises at least one selected of group consisting of:
• copolymer with acid groups, alkylammonium salt of a polycarboxylic acid, alkylammonium salt of an unsaturated fatty acid, salt of unsaturated polyamine amides and acid polyesters of low molecular weight, salt of an unsaturated polyamine amide and acid polyesters of low molecular weight;
• and wherein the active agent, the solvent, the resin and the dispersant are compatible with the coating for which the additive is prepared;
• in order that said additive is quickly and easily integrated to said coating by means of adjusting the viscosity of said additive to that of said coating by addition of solvent or thinner.

An additive to be incorporated in coatings which transfer to surfaces at least one of the following properties:

• biocidal, ultraviolet radiation protection and fire protection, said additive comprising:
• an active agent being metal nanoparticles, a solvent (vehicle), a dispersant and a resin, wherein:
• the active agent has an average particle size in the range from 1 nanometer to 100 nanometers and a purity of at least 95%,
• wherein the resin comprises one selected of:
• alkydalyl of soya, coconut, lecithin, and the dispersant comprises at least one selected of group consisting of:
• copolymer with acid groups, alkylammonium salt of a polycarboxylic acid, alkylammonium salt of an unsaturated fatty acid, salt of unsaturated polyamine amides and acid polyesters of low molecular weight, salt of an unsaturated polyamine amide and acid polyesters of low molecular weight;
• and wherein the active agent, the solvent, the resin and the dispersant are compatible with the coating for which the additive is prepared;
• in order that said additive is quickly and easily integrated to said coating by means of adjusting the viscosity of said additive to that of said coating by addition of solvent or thinner.

An additive to be incorporated in coatings which transfer to surfaces at least one of the following properties:

• biocidal, ultraviolet radiation protection and fire protection, said additive comprising:
• an active agent being metal nanoparticles, a solvent (vehicle), a dispersant and a resin, wherein:
• the active agent has an average particle size in the range from 1 nanometer to 100 nanometers and a purity of at least 95%,
• wherein the resin comprises:
• phenolic resin, and the dispersant comprises at least one selected of group consisting of:
• copolymer with acid groups, alkylammonium salt of a polycarboxylic acid, alkylammonium salt of an unsaturated fatty acid, salt of unsaturated polyamine amides and acid polyesters of low molecular weight, salt of an unsaturated polyamine amide and acid polyesters of low molecular weight;
• and wherein the active agent, the solvent, the resin and the dispersant are compatible with the coating for which the additive is prepared;
• in order that said additive is quickly and easily integrated to said coating by means of adjusting the viscosity of said additive to that of said coating by addition of solvent or thinner.