# US 2018/0022931 A1 · Low voc peelable paint system and methods

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- Number: US 2018/0022931 A1
- Document ID: US20180022931A1
- Status: Published application
- Kind: A1
- Application number: 15/218,230
- Filed: 2016-07-25
- Published: 2018-01-25
- Earliest claimed: 2016-07-25
- Assignees: The Sherwin-Williams Company
- Applicants: The Sherwin-Wiiliams Company
- Inventors: Jay A. Reimann
- Web page: https://patentgrep.com/patent/US20180022931A1

## CPC

- C09D 5/008: {Temporary coatings (C09D5/20 takes precedence)}
- B05C 1/003: {incorporating means for heating or cooling the liquid or other fluent material (B05C11/1042 takes precedence)}
- B05D 7/52: {Two layers}
- C09D 5/20: for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
- C09D 133/08: Homopolymers or copolymers of acrylic acid esters
- 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)
- B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08)
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)

## Abstract

A paint system having a base coating composition and a top coating composition, each having a low VOC value preferably below 50 g/l, is disclosed. The base coating composition includes a release material and the top coating composition includes a pigment and a paint emulsion. The base coat formulation is applied to a surface to form a base coating and the top coat layer is applied over the top coating. When dry, the top coating has high cohesion relative to the adhesion of top coating to base coating, thereby permitting the top coating to be manually peeled away from the surface. Related methods are also disclosed.

## Claims

### Claim 1

A paint system comprising:
a base coating composition and a top coating composition, said base coating composition comprising a release material, said base coating composition having a VOC value less than 50 g/L, said top coating composition comprising a pigment and an emulsion paint base, said top coating composition having a VOC less than 50 g/L;
said base coating composition dying to form a base coating;
said top coating composition, when applied over said base coating, drying to produce a top coating having sufficient cohesion relative to the adhesion of said top coating over said base coating to allow manual peeling of said top coating from said base coating.

### Claim 2 (depends on 1)

A system according to claim 1, said base coating composition and said top coating composition each being aqueous and each having a VOC value less than 25 g/L.

### Claim 3 (depends on 1)

A system according to claim 1, said top coating comprising an acrylic latex emulsion paint base.

### Claim 4 (depends on 3)

A system according to claim 3, said acrylic latex emulsion drying to a film having a tensile strength greater than 300 PSI and a peak elongation greater than 600%.

### Claim 5 (depends on 1)

A system according to claim 1, said release material being selected from the group concerning of PTFE, paraffin wax, and mixtures thereof.

### Claim 6 (depends on 1)

A system according to claim 1, said release material comprising paraffin wax.

### Claim 7

A method comprising:
providing a paint system, said paint system comprising:
a base coating composition and a top coating composition, said base coating composition comprising a release material, said base coating composition having a VOC value less than 50 g/L, said top coating composition comprising a pigment and an emulsion paint base, said top coating composition having a VOC less than 50 g/L;
said base coating composition dying to form a base coating;
said top coating composition, when applied over said base coating, drying to produce a top coating having sufficient cohesion relative to the adhesion of said top coating over said base coating to allow manual peeling of said top coating from said base coating;
applying said base coating composition to a wall surface;
allowing said base coating composition to dry to form a base coating;
applying said top coating composition over said base coating.

### Claim 8 (depends on 7)

A method according to claim 7, said base coating composition and said top coating composition each being aqueous and each having a VOC value less than 25 g/L.

### Claim 9 (depends on 7)

A method according to claim 7, said top coating comprising an acrylic latex emulsion.

### Claim 10 (depends on 9)

A method according to claim 9, said acrylic latex emulsion drying to a film having a tensile strength greater than 1800 PSI and a peak elongation greater than 600%.

### Claim 11 (depends on 7)

A method according to claim 7, said release material being selected from the group concerning of PTFE, paraffin wax, and mixtures thereof.

### Claim 12 (depends on 7)

A method according to claim 7, further comprising applying an overlaying coating composition after drying of said top coating composition.

### Claim 13 (depends on 7)

A method according to claim 7, said release material comprising paraffin wax.

### Claim 14

A method comprising:
approaching a wall surface coated with a base coating and a top coating, the base coating having been dried from a base coating composition comprising a release material, and having a VOC value less than 50 g/L; said top coat having been dried from a top coating composition comprising a pigment and an emulsion paint base and a VOC less than 50 g/L, said top coating having sufficient cohesion relative to the adhesion of said top coating over said base coating to allow manual peeling of said top coating from said base coating; and
manually peeling said top coating from said wall surface.

### Claim 15 (depends on 14)

A method according to claim 14, said top coating comprising an acrylic latex emulsion.

### Claim 16 (depends on 14)

A method according to claim 14, said release material being selected from the group concerning of PTFE, paraffin wax, and mixtures thereof.

### Claim 17 (depends on 14)

A method according to claim 14, said release material comprising paraffin wax.

### Claim 18

A method comprising:
approaching a wall surface coated with a base coating and a top coating, the base coating having been dried from a base coating composition comprising a release material, and having a VOC value less than 50 g/L; said top coat having been dried from a top coating composition comprising a pigment and an emulsion paint base and a VOC less than 50 g/L, said top coating having sufficient cohesion relative to the adhesion of said top coating over said base coating to allow manual peeling of said top coating from said base coating; and
applying an overlaying third coating composition over said top coating.

### Claim 19

A painted surface comprising:
a wall surface;
a base coating disposed over the wall surface; and
a top coating disposed over the base coating;
the base coating having been dried from a base coating composition comprising a release material, and having a VOC value less than 50 g/L; said top coat having been dried from a top coating composition comprising a pigment and an emulsion paint base and a VOC less than 50 g/L, said top coating having sufficient cohesion relative to the adhesion of said top coating over said base coating to allow manual peeling of said top coating from said base coating