# US 12,215,245 B2 · Aqueous coating composition

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,215,245 B2
- Document ID: US12215245B2
- Status: Granted
- Kind: B2
- Application number: 17/417,937
- Filed: 2019-01-29
- Published: 2022-03-24
- Granted: 2025-02-04
- Earliest claimed: 2019-01-29
- Assignees: Midland Global Technologies LLC; Rohm and Haas Company
- Applicants: Rohm and Haas Company; Dow Global Technologies LLC
- Inventors: Zhen Qian; Wei Cui; Jianming Xu
- Web page: https://patentgrep.com/patent/US12215245B2

## CPC

- C09D 133/02: Homopolymers or copolymers of acids; Metal or ammonium salts thereof
- C08F 2/26: anionic
- C08F 212/08: Styrene
- C08F 220/14: Methyl esters {, e.g. methyl (meth)acrylate}
- C08L 91/06: Waxes
- C09D 125/14: with unsaturated esters
- C09D 133/12: Homopolymers or copolymers of methyl methacrylate
- C09D 143/02: Homopolymers or copolymers of monomers containing phosphorus
- C09D 191/06: Waxes
- 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
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)

## Abstract

The present invention provides an aqueous dispersion and an aqueous coating composition comprising the aqueous dispersion that provides coatings with improved durable water and ink repellency properties without compromising early water repellency.

## Claims

### Claim 1

An aqueous dispersion comprising:
(A) an emulsion polymer with a Tg of −45° C. or more comprising, by weight based on the dry weight of the emulsion polymer,
from 1.0% to 2.0% of structural units of a polymerizable surfactant having the structural formula:
the structural formula:
wherein:
m1 is 1, 2, or 3;
n is 2 to 50; and
M is Li+, Na+, K+, or +NH4;
from 1% to 5% of structural units of methacrylic acid, phosphoethyl methacrylate, or a mixture thereof;
from 5% to 25% of structural units of a C10-C20-alkyl ester of (meth)acrylic acid; and
from 67 to 93.5% of structural units of at least one of styrene, 2-ethylhexyl acrylate, or methyl methacrylate; and
(B) from 1.5% to 20% by solids weight of a wax, based on the dry weight of the emulsion polymer.

### Claim 2 (depends on 1)

The aqueous dispersion of claim 1, wherein n is an integer in the range of from 2 to 20.

### Claim 3 (depends on 1)

The aqueous dispersion of claim 1, wherein the wax is a paraffin wax.

### Claim 4 (depends on 1)

The aqueous dispersion of claim 1, wherein the emulsion polymer has a Tg in the range of from −35 to 20° C.

### Claim 5 (depends on 1)

The aqueous dispersion of claim 1, wherein the C10-C20-alkyl ester of (meth)acrylic acid is selected from the group consisting of decyl acrylate, decyl methacrylate, isodecyl methacrylate, isodecyl acrylate, lauryl acrylate, lauryl methacrylate, icosyl acrylate, icosyl methacrylate, or mixtures thereof.

### Claim 6 (depends on 1)

A method of preparing the aqueous dispersion of claim 1, comprising: admixing an emulsion polymer with from 1.5% to 20% by solids weight of a wax, based on the dry weight of the emulsion polymer;
wherein the emulsion polymer comprises, by weight based on the dry weight of the emulsion polymer,
from 1.0% to 2.0% of structural units of a polymerizable surfactant having the structural formula:
the structural formula:
wherein:
m1 is 1, 2, or 3;
n is 2 to 50; and
M is Li+, Na+, K+, or +NH4;
from 1% to 5% of structural units of methacrylic acid, phosphoethyl methacrylate, or a mixture thereof;
from 5% to 25% of structural units of a C10-C20-alkyl ester of (meth)acrylic acid; and
from 67 to 93.5% of structural units of at least one of styrene, 2-ethylhexyl acrylate, or methyl methacrylate.

### Claim 7 (depends on 1)

An aqueous coating composition comprising the aqueous dispersion of claim 1.

### Claim 8 (depends on 7)

The aqueous coating composition of claim 7, further comprising a pigment with a pigment volume concentration of 55% or less.

### Claim 9 (depends on 8)

The aqueous coating composition of claim 8, wherein the pigment comprises titanium dioxide at a pigment volume concentration of 40%.

### Claim 10 (depends on 1)

The aqueous dispersion of claim 1, wherein the C10-C20-alkyl ester of (meth)acrylic acid comprises lauryl methacrylate.