# US 7,608,338 B2 · High brightness coating compositions and related products

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- Number: US 7,608,338 B2
- Document ID: US7608338B2
- Status: Granted
- Kind: B2
- Application number: 10/461,815
- Filed: 2003-06-12
- Published: 2004-02-26
- Granted: 2009-10-27
- Earliest claimed: 2002-06-13
- Assignees: International Paper Company
- Inventors: Jay Cheng Song; Sen Yang
- Web page: https://patentgrep.com/patent/US7608338B2

## CPC

- B41M 5/52: Macromolecular coatings
- C09D 125/14: with unsaturated esters
- C09D 129/04: Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
- C09D 131/04: Homopolymers or copolymers of vinyl acetate
- G03G 8/00: Layers covering the final reproduction, e.g. for protecting, for writing thereon
- B41M 5/5218: {characterised by inorganic additives, e.g. pigments, clays}
- B41M 5/5254: {characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers}
- C08K 3/013: Fillers, pigments or reinforcing additives
- C08L 3/04: Starch derivatives {, e.g. crosslinked derivatives}
- C08L 25/06: Polystyrene
- C08L 33/06: of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L 71/02: Polyalkylene oxides
- Y10T 428/25: Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T 428/252: Glass or ceramic [i.e., fired or glazed clay, cement, etc.] [porcelain, quartz, etc.]
- Y10T 428/254: Polymeric or resinous material
- Y10T 428/256: Heavy metal or aluminum or compound thereof
- Y10T 428/257: Iron oxide or aluminum oxide
- Y10T 428/258: Alkali metal or alkaline earth metal or compound thereof
- Y10T 428/259: Silicic material
- Y10T 428/273: of coating
- Y10T 428/31855: Of addition polymer from unsaturated monomers
- Y10T 428/31971: Of carbohydrate
- Y10T 428/31993: Of paper
- B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P)
- 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)
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The invention provides a coating composition that provides high brightness, high gloss and superior print quality. The coated product comprises a substrate coated on at least one side with a coating composition comprising a pigment component and a binder component that is made of mixture of two binder resins. Both binder resins are capable of film forming. The first binder resin provides coating gloss and adhesion properties and the second binder resin enhances coating porosity, adhesion, and anti-static properties. The first binder resin that is used at 60-95% by weight of the total binder resin blend is selected from the group consisting of vinyl acetate acrylate, styrene acrylate and styrene butadiene acrylic copolymers. The second binder resin that is used at 5-40% by weight of the total binder resin blend is selected from the group consisting of anion type polystyrene derivatives, polyethylene glycol and polypropylene glycol.

## Claims

### Claim 1

A coating composition comprising:
a inorganic pigment component; and a binder component; wherein said binder component a mixture of about 60 to about 95% by weight of a first film forming binder resin and a from about 5 to about 40% by total weight of a second film forming binder resin wherein said weight percents are based on the total weight of the binder component and wherein said binder component comprises from about 8% to about 25% by weight and the pigment component comprises from about 50 to 90% by weight, each weight percent based on the total dry weight of the solids in the coating composition.

### Claim 2 (depends on 1)

The coating composition according to claim 1, wherein said binder component are binder resins selected from the group consisting of vinyl acetate acrylate copolymers, styrene acrylate latexes, styrene butadiene acrylate copolymers, polyvinyl acetate, styrene butadiene, acrylonitrile copolymer, styronal, anion type polystyrene derivatives, polyethylene glycol and polypropylene glycol.

### Claim 3 (depends on 1)

The coating composition according to claim 1, wherein said first binder resin is selected from the group consisting of vinyl acetate, styrene acrylate and styrene butadiene acrylate copolymers and the second binder resin is selected from the group consisting of anion polystyrene derivatives, polyethylene glycol and polypropylene glycol.

### Claim 4 (depends on 3)

The coating composition according to claim 3, wherein said first binder resin provides coating gloss and adhesion properties and said second binder resin provides porosity, adhesion and anti-static properties.

### Claim 5 (depends on 1)

The coating composition according to claim 1, wherein said pigment component is present between 50-90% by dry weight and said binder component is present between 8-25% by dry weight.

### Claim 6 (depends on 1)

The coating composition according to claim 1, wherein said pigment component comprises a pigment selected from the group consisting of aluminium trihydrate powder, kaolin clay, calcium carbonate, satin white, silica, alumina silicates and plastic pigments.

### Claim 7 (depends on 6)

The coating composition according to claim 6, wherein said pigment particle size is in the range of 0.05 to 5 microns.

### Claim 8

A coated product comprising a substrate and a pigmented coating composition coated on at least one surface of the substrate; wherein said pigmented coating composition comprises a pigment component; and a binder component; wherein said binder component comprises a mixture from about 60 to about 95% by weight of a first film forming binder resin and from about 5 to about 40% by weight of a second film forming binder resin wherein said weight percents are based on the total weight of the binder component and wherein said binder component comprises from about 8% to about 25% by total dry weight of the solids in the coating composition.

### Claim 9 (depends on 8)

The coated product according to claim 8, wherein said binder component are binder resins selected from the group consisting of vinyl acetate acrylate copolymers, styrene acrylate latexes, styrene butadiene acrylate copolymers, polyvinyl acetate, styrene butadiene, acrylonitrile copolymer, styronal, anion type polystyrene derivatives, polyethylene glycol and polypropylene glycol.

### Claim 10 (depends on 8)

The coated product according to claim 8, wherein said first binder resin is selected from the group consisting of vinyl acetate, styrene acrylate and styrene butadiene acrylate copolymers and said second binder resin is selected from the group consisting of anion polystyrene derivatives, polyethylene glycol and polypropylene glycol.

### Claim 11 (depends on 10)

The coated product according to claim 10, wherein said first binder resin is present between 60-95% by weight of the total binder resin mixture and said second binder resin is present between 5-40% by weight of the total binder resin mixture.

### Claim 12 (depends on 10)

The coated product according to claim 10, wherein said first binder resin provides coating gloss and adhesion properties and said second binder resin provides porosity, adhesion and anti-static properties.

### Claim 13 (depends on 8)

The coated product according to claim 8, wherein said pigment component comprises a pigment selected from the group consisting of aluminium trihydrate powder, kaolin clay, calcium carbonate, satin white, silica, alumina silicates and plastic pigments.

### Claim 14 (depends on 13)

The coated product according to claim 13, wherein said pigment particle size is in the range of 0.05 to 5 microns.

### Claim 15 (depends on 8)

The coated product according to claim 8, wherein said pigmented coating composition is on both sides of said substrate.

### Claim 16 (depends on 8)

The coated product according to claim 8, wherein at least one side of said substrate is first coated with a base coat and said pigmented coating composition is a top coat over said base coat.

### Claim 17 (depends on 16)

The coated product according to claim 16, wherein said base coat comprises a pigment component and starch.

### Claim 18 (depends on 16)

The coated product according to claim 16, wherein said base coat is the same composition as said top coat.

### Claim 19 (depends on 16)

The coated product according to claim 16, wherein said base coat and said top coat have a coating weight between 8 to 20 g/m2.

### Claim 20 (depends on 16)

The coated product according to claim 16, further comprising a base coat over both sides of said substrate.

### Claim 21 (depends on 20)

The coated product according to claim 20, further comprising said pigmented coating composition over both sides of said base coat.

### Claim 22 (depends on 8)

The coated product according to claim 8, wherein said substrate is paper.

### Claim 23 (depends on 8)

The coated product according to claim 8, wherein the amount of the binder component in the coating is from about 10 to about 22% by weight of the coating.