# US 9,872,500 B2 · Additive for coatings containing metallic nanoparticles

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- Number: US 9,872,500 B2
- Document ID: US9872500B2
- Status: Granted
- Kind: B2
- Application number: 14/451,275
- Filed: 2014-08-04
- Published: 2016-02-04
- Granted: 2018-01-23
- Earliest claimed: 2014-08-04
- Assignees: Servicios Administrativos Penoles S.A. de C.V.
- Applicants: Servicios Administrativos Peñoles S.A. de C.V.
- Inventors: Ricardo Benavides Pérez; José Gertrudis Bocanegra Rojas; Jesús Manuel Martinez Martinez; Julio César Rangel Mata
- Web page: https://patentgrep.com/patent/US9872500B2

## CPC

- C08K 3/08: Metals
- A01N 59/16: Heavy metals; Compounds thereof
- A01N 59/20: Copper
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C09C 1/028: {Compounds containing only magnesium as metal}
- C09C 1/04: Compounds of zinc {(C09C1/0003, C09C1/0009, C09C1/0015, C09C1/0078 take precedence)}
- C09C 1/043: {Zinc oxide}
- C09C 1/62: Metallic pigments or fillers {(C09C1/0015 takes precedence)}
- C09D 1/00: Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
- C09D 5/00: Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes
- C09D 5/14: Paints containing biocides, e.g. fungicides, insecticides or pesticides (C09D5/16 takes precedence)
- C09D 5/18: Fireproof paints {including high temperature resistant paints}
- C09D 7/45: Anti-settling agents
- C09D 7/61: inorganic
- C09D 7/67: {Particle size smaller than 100 nm}
- C01P 2004/64: Nanometer sized, i.e. from 1-100 nanometer
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C09C: TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES (treatment of materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone C04B14/00, C04B18/00, C04B20/00); PREPARATION OF CARBON BLACK {; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS}
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

## Abstract

The additive of the present invention is intended for transferring, to a final coating, biocidal, UV protection, and flame retardant properties and in general the selected properties intrinsic to the metals and compounds of Ag, Au, Cu, Mg, Zn, Bi, Sb, said additive includes the use of solvents, surfactants, dispersants and resins that make it compatible with the final coating. Said coating treated with additive ensures perfect distribution and dispersion of the nanoparticles throughout it, without the need to be subjected to an inorganic substrate.

## Claims

### Claim 1

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: alkydalyl 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.

### Claim 2 (depends on 1)

The additive of claim 1, wherein the percentage of the dispersant is maintained between 0.5% and 10% based on the active agent.

### Claim 3 (depends on 1)

The additive of claim 1, wherein the active agent is selected from a group consisting of Ag, Cu, ZnO, AgS, and mixtures thereof.

### Claim 4

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.

### Claim 5

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.

### Claim 6

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.

### Claim 7 (depends on 1)

The additive of claim 1, wherein said additive contains up to 99 wt. % of nanometric compound as active agent.

### Claim 8 (depends on 4)

The additive of claim 4, wherein said additive contains up to 99 wt. % of nanometric compound as active agent.

### Claim 9 (depends on 5)

The additive of claim 5, wherein said additive contains up to 99 wt. % of nanometric compound as active agent.

### Claim 10 (depends on 6)

The additive of claim 6, wherein said additive contains up to 99 wt. % of nanometric compound as active agent.

### Claim 11 (depends on 4)

The additive of claim 4, wherein the percentage of the dispersant is maintained between 0.5% and 10% based on the active agent.

### Claim 12 (depends on 5)

The additive of claim 5, wherein the percentage of the dispersant is maintained between 0.5% and 10% based on the active agent.

### Claim 13 (depends on 6)

The additive of claim 6, wherein the percentage of the dispersant is maintained between 0.5% and 10% based on the active agent.

### Claim 14 (depends on 4)

The additive of claim 4, wherein the active agent is selected from a group consisting of Ag, Cu, ZnO, AgS, and mixtures thereof.

### Claim 15 (depends on 5)

The additive of claim 5, wherein the active agent is selected from a group consisting of Ag, Cu, ZnO, AgS, and mixtures thereof.

### Claim 16 (depends on 6)

The additive of claim 6, wherein the active agent is selected from a group consisting of Ag, Cu, ZnO, AgS, and mixtures thereof.