# US 10,119,040 B2 · Paint composition

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- Number: US 10,119,040 B2
- Document ID: US10119040B2
- Status: Granted
- Kind: B2
- Application number: 15/659,813
- Filed: 2017-07-26
- Published: 2018-02-08
- Granted: 2018-11-06
- Earliest claimed: 2016-08-08
- Assignees: Rohm and Haas Company
- Applicants: Rohm and Haas Company
- Inventors: Gary W. Dombrowski; Pu Luo; Partha S. Majumdar
- Web page: https://patentgrep.com/patent/US10119040B2

## CPC

- C09D 7/61: inorganic
- C08F 2/30: non-ionic
- C08F 220/14: Methyl esters {, e.g. methyl (meth)acrylate}
- C08F 220/1808: {C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate}
- C08F 265/06: Polymerisation of acrylate or methacrylate esters on to polymers thereof
- 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 5/024: {characterised by the additives}
- C09D 7/63: organic
- C09D 133/26: Homopolymers or copolymers of acrylamide or methacrylamide
- C09D 151/003: {grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds (C09D151/04, C09D151/06 take precedence)}
- C08F 220/1806: {C6-(meth)acrylate, e.g. (cyclo)hexyl (meth)acrylate or phenyl (meth)acrylate}
- C08K 3/22: of metals
- C08K 3/28: Nitrogen-containing compounds
- C08K 5/25: Carboxylic acid hydrazides
- C08K 2003/2296: {of zinc}
- 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)
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

The present invention relates to a deep base or accent coating composition comprising an acrylic based binder and a Zn++ additive. The composition of the present invention resists water staining better than comparable formulations that do not contain the additive.

## Claims

### Claim 1

A paint composition comprising a stable aqueous dispersion of acrylic based polymer particles functionalized with from 0.2 to 12 weight percent, based on the weight of the polymer particles, of structural units of a monomer with keto functionality; a colorant at a concentration in the range of from 5 to 25 weight percent, based on the weight of the paint composition; from 0.5 to 5 weight percent of a Zn++ compound, based on the weight of the paint composition; and from 0.5 to 10 weight percent of a dihydrazide or a polyamine, based on the weight of the paint composition; and a substantial absence of extenders;
wherein the polymer particles are two-phase polymer particles with a soft phase having a Tg of not more than 0° C., and a hard phase having a Tg of not less than 30° C.; wherein the ratio of the soft phase to the hard phase is in the range of from 90:10 to 60:40; with the proviso that the polymer particles have an overall Tg of less than 15° C.

### Claim 2 (depends on 1)

The paint composition of claim 1 wherein the monomer with keto functionality is acetoacetoxyethyl methacrylate or diacetone acrylamide at a concentration in the range of from 1 to 5 weight percent, based on the weight of the acrylic based polymer particles.

### Claim 3 (depends on 2)

The paint composition of claim 2 which comprises a dihydrazide, a diamine, or a polyetheramine.

### Claim 4 (depends on 1)

The paint composition of claim 1 wherein the colorant has a concentration in the range or from 8 to 20, based on the weight of the composition, wherein the composition comprises less than 5 PVC from TiO2, BaSO4, silicates, aluminosilicates, CaCO3, nepheline, feldspar, wollastonite, kaolinite, dicalcium phosphate, and diatomaceous earth, and wherein the paint composition comprises a dihydrazide.

### Claim 5 (depends on 4)

The paint composition of claim 4 wherein the colorant is phthalocyanine blue, phthalocyanine green, monoarylide yellow, diarylide yellow, benzimidazolone yellow, heterocyclic yellow, DAN orange, quinacridone magenta, quinacridone violet, or an organic red, wherein the composition comprises less than 1 PVC from TiO2, BaSO4, silicates, aluminosilicates, CaCO3, nepheline, feldspar, wollastonite, kaolinite, dicalcium phosphate, and diatomaceous earth.

### Claim 6 (depends on 1)

The paint composition of claim 1 wherein the Zn++ compound is ZnO or Zn(NH3)2(CO3)2 present at a concentration in the range of from 0.2 to 4 weight percent, based on the weight of the composition.

### Claim 7 (depends on 3)

The paint composition of claim 3 wherein the dihydrazide is adipic acid dihydrazide.

### Claim 8 (depends on 1)

The composition of claim 1 wherein the polymer particles have a) a first phase that comprises from 45 to 70 weight percent structural units of 2-ethylhexyl acrylate, and from 20 to 50 weight percent structural units of methyl methacrylate or styrene, based on the weight of the first phase of the polymer particles; and b) a second phase that comprises from 85 to 98.5 weight percent methyl methacrylate or styrene based on the weight of the second phase of the polymer particles;
wherein the polymer particles further comprise from 4 to 10 weight percent structural units of acetoacetoxyethyl methacrylate or from 1 to 5 weight percent structural units of diacetone acrylamide, and from 0.5 to 5 weight percent structural units of acrylic acid or methacrylic acid, based on the weight of the polymer particles.

### Claim 9 (depends on 1)

The composition of claim 1 wherein the polymer particles have a) a first phase that comprises from 10 to 60 weight percent structural units of butyl acrylate, from 15 to 65 weight percent structural units of 2-ethylhexyl acrylate, and from 10 to 50 weight percent structural units of methyl methacrylate or styrene, based on the weight of the first phase of the polymer particles; and b) a second phase that comprises from 85 to 98.5 weight percent methyl methacrylate or styrene;
wherein the polymer particles further comprise from 4 to 10 weight percent structural units of acetoacetoxyethyl methacrylate or from 1 to 5 weight percent structural units of diacetone acrylamide, and from 0.5 to 5 weight percent structural units of acrylic acid or methacrylic acid, based on the weight of the polymer particles.

### Claim 10 (depends on 1)

The paint composition of claim 1 which further includes a rheology modifier, a defoamer, a neutralizing agent, a surfactant, and a dispersant.