# US 2019/0169459 A1 · Coating compositions

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- Number: US 2019/0169459 A1
- Document ID: US20190169459A1
- Status: Published application
- Kind: A1
- Application number: 16/206,418
- Filed: 2018-11-30
- Published: 2019-06-06
- Earliest claimed: 2017-12-01
- Assignees: Essential Industries, Inc.
- Applicants: Essential Industries, Inc.
- Inventors: Jay M. Shaffer; Emily R. Dybdahl; Michael R. Underwood, JR.
- Web page: https://patentgrep.com/patent/US20190169459A1

## CPC

- C09D 133/06: of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08F 283/006: {on to polymers provided for in C08G18/00 (C08F283/004 takes precedence)}
- C08G 18/0866: {the dispersing or dispersed phase being an aqueous medium}
- C09D 5/008: {Temporary coatings (C09D5/20 takes precedence)}
- C09D 5/024: {characterised by the additives}
- C09D 7/61: inorganic
- C09D 7/63: organic
- C09D 7/67: {Particle size smaller than 100 nm}
- C09D 133/14: of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
- C09D 143/04: Homopolymers or copolymers of monomers containing silicon
- C09D 175/04: Polyurethanes
- C08K 3/011: Crosslinking or vulcanising agents, e.g. accelerators
- C08K 3/22: of metals
- C08K 3/26: Carbonates; Bicarbonates
- C08K 3/36: Silica
- C08K 5/098: Metal salts of carboxylic acids
- C08K 2003/2227: {of aluminium}
- C08K 2003/2258: {of tungsten}
- 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
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

A surface finish composition including a silica-bonded reversibly cross-linked co-polymer and a water-dispersible polyurethane. The silica-bonded reversibly cross-linked co-polymer includes a base co-polymer including monomers derived from one or more ethylenic polymerizable monomers and an alkoxysilyl acrylate; a reversible cross-linking agent; and a silica nanoparticle bonded to the base co-polymer. The amount of water-dispersible polyurethane is 15-50% by weight of the combined amount of water-dispersible polyurethane and base co-polymer.

## Claims

### Claim 1

A surface finish composition comprising:
a) a silica-bonded reversibly cross-linked co-polymer comprising
i) a base co-polymer comprising monomers derived from one or more ethylenic polymerizable monomers and an alkoxysilyl acrylate of formula (I)
wherein R1 is hydrogen or C1-4alkyl, R2 is C1-4alkyl, and n is 1-3;
ii) a reversible cross-linking agent; and
iii) a silica nanoparticle bonded to the base co-polymer; and
b) a water-dispersible polyurethane;
wherein the amount of water-dispersible polyurethane is 15-50% by weight of the combined amount of water-dispersible polyurethane and base co-polymer.

### Claim 2 (depends on 1)

The surface finish composition of claim 1, wherein the one or more ethylenic polymerizable monomers comprises one or more of optionally substituted styrenes, methacrylic and/or acrylic acid, and one or more (meth)acrylate esters.

### Claim 3 (depends on 1)

The surface finish composition of claim 1, wherein the reversible cross-linking agent is a metal cross-linking agent.

### Claim 4 (depends on 3)

The surface finish composition of claim 3, wherein the metal cross-linking agent is a compound of zinc, aluminum, tungsten, zirconium, or an alkaline earth metal.

### Claim 5

(canceled)

### Claim 6 (depends on 1)

The surface finish composition of claim 1, wherein the base co-polymer comprises a plurality of carboxylic acid groups and the reversible cross-linking agent reversibly crosslinks with a carboxylic acid of the base co-polymer.

### Claim at position 7

7-11. (canceled)

### Claim 12 (depends on 1)

The surface finish composition of claim 1, wherein the silica nanoparticle has an average particle size of 5 to 50 nm.

### Claim at position 9

13-17. (canceled)

### Claim 18 (depends on 1)

The surface finish composition of claim 1 wherein the silica-bonded reversibly cross-linked co-polymer contains a group of formula (II):
wherein SNP is a silica nanoparticle moiety.

### Claim at position 11

19-20. (canceled)

### Claim 21 (depends on 1)

The surface finish composition of claim 1, wherein the base co-polymer is derived from monomers of styrene, methacrylic acid, one or more C1-4alkyl (meth)acrylates, and the alkoxysilyl acrylate of formula (I), wherein R1 is hydrogen or methyl, R2 is methyl, and n is 2.

### Claim 22

(canceled)

### Claim 23 (depends on 1)

The surface finish composition of claim 1, wherein 1-10 weight percent of the base co-polymer is derived from the alkoxysilyl acrylate of formula (I).

### Claim at position 15

24-25. (canceled)

### Claim 26 (depends on 1)

The surface finish composition of claim 1 comprising silica nanoparticles, wherein the combined surface area of the silica nanoparticles is from 8-32×104 m2 per mole of monomer derived from the alkoxysilyl acrylate of formula (I).

### Claim 27 (depends on 26)

The surface finish composition of claim 26, wherein the combined surface area of the silica nanoparticles is from 16-18×104 m2 per mole of monomer derived from the alkoxysilyl acrylate of formula (I).

### Claim 28

(canceled)

### Claim 29 (depends on 1)

The surface finish composition of claim 1 comprising a solids content of
50-80 weight % of the silica-bonded reversibly cross-linked co-polymer; and
5-25 weight % of the water-dispersible polyurethane.

### Claim 30 (depends on 1)

The surface finish composition of claim 1, wherein the composition is an aqueous composition.

### Claim 31 (depends on 30)

The surface finish composition of claim 30, wherein the aqueous composition comprises 10-60% by weight of the base co-polymer.

### Claim at position 22

32-35. (canceled)

### Claim 36

A surface finish composition prepared by
combining a reversibly cross-linked co-polymer with a silica nanoparticle in a solvent,
wherein the reversibly cross-linked co-polymer comprises a reversible cross-linking agent and a base co-polymer comprising monomers derived from one or more ethylenic polymerizable monomers and an alkoxysilyl acrylate of formula (I)
wherein R1 is hydrogen or C1-4alkyl, R2 is C1-4alkyl, and n is 1-3; and the silica nanoparticle comprises surface silanol groups;
reacting the reversibly cross-linked co-polymer with the silica nanoparticle to form a covalent bond between a surface silanol group and the silicon atom derived from a monomer of formula (I) to provide a silica-bonded reversibly cross-linked co-polymer; and
blending the silica-bonded reversibly cross-linked co-polymer with a water-dispersible polyurethane, wherein the amount of the water-dispersible polyurethane is 15-50% by weight of the total amount of water-dispersible polyurethane and base co-polymer.

### Claim 37

(canceled)

### Claim 38 (depends on 36)

The surface finish composition of claim 36, wherein the reversibly cross-linked co-polymer and silica nanoparticle are heated above ambient temperature for a sufficient time to form the covalent bond.

### Claim 39

(canceled)

### Claim 40 (depends on 38)

The surface finish composition of claim 38, wherein the reversibly cross-linked co-polymer and silica nanoparticle are heated to 140-150° F. for 1-5 hours.

### Claim 41

A method of preparing a surface finish composition comprising
combining a reversibly cross-linked co-polymer with a silica nanoparticle in a solvent,
wherein the reversibly cross-linked co-polymer comprises a reversible cross-linking agent and a base co-polymer comprising monomers derived from one or more ethylenic polymerizable monomers and an alkoxysilyl acrylate of formula (I)
wherein R1 is hydrogen or C1-4alkyl, R2 is C1-4alkyl, and n is 1-3; and the silica nanoparticle comprises surface silanol groups;
reacting the reversibly cross-linked co-polymer with the silica nanoparticle to form a covalent bond between a surface silanol group and the silicon atom derived from a monomer of formula (I) to provide a silica-bonded reversibly cross-linked co-polymer; and
blending the silica-bonded reversibly cross-linked co-polymer with a water-dispersible polyurethane, wherein the amount of the water-dispersible polyurethane is 15-50% by weight of the total amount of water-dispersible polyurethane and base co-polymer.

### Claim 42

(canceled)

### Claim 43 (depends on 41)

The method of claim 41, wherein the reversibly cross-linked co-polymer and silica nanoparticle are heated above ambient temperature for a sufficient time to form the covalent bond.

### Claim 44

(canceled)

### Claim 45 (depends on 43)

The method of claim 43, wherein the reversibly cross-linked co-polymer and silica nanoparticle are heated to 140-150° F. for 1-5 hours.