EP4626981A1

EP4626981A1 - Interior and exterior coating compositions for cookware articles having improved deep draw performance

Info

Publication number: EP4626981A1
Application number: EP23829250.2A
Authority: EP
Inventors: Joanne Rachel LEDGER; Julie Kathryn WRIGHT
Original assignee: PPG Industries Ohio Inc
Current assignee: PPG Industries Ohio Inc
Priority date: 2022-12-02
Filing date: 2023-11-28
Publication date: 2025-10-08
Also published as: KR20250116107A; CN120265713A; WO2024118533A1

Abstract

The present disclosure provides coating compositions for interior and exterior surfaces for articles of cookware and bakeware, and in particular, to such coating compositions which are free of perfluoroalkyl substances (PFAS) and which demonstrate improved deep draw performance. The interior coating composition may include a primary resin, a silicone oil, and a dry lubricant, wherein the coating composition comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition. The exterior coating composition may include a primary resin, and a dry lubricant, wherein the coating composition comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition.

Description

INTERIOR AND EXTERIOR COATING COMPOSITIONS FOR COOKWARE

ARTICLES HAVING IMPROVED DEEP DRAW PERFORMANCE

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit under 35 U.S.C. § 119(e) of U.S.

Provisional Application No. 63/429,854 entitled “INTERIOR AND EXTERIOR COATING COMPOSITIONS FOR COOKWARE ARTICLES HAVING IMPROVED DEEP DRAW PERFORMANCE”, filed on December 2, 2022 which is incorporated by reference in its entirety.

FIELD

[0002] The present disclosure relates to coating compositions for interior and exterior surfaces for articles of cookware and bakeware and, in particular, to such coating compositions which are free of perfluoroalkyl substances (PFAS) and which demonstrate improved deep draw performance.

BACKGROUND

[0003] Heat resistant coatings are applied to substrates such as cookware, bakeware or other cooking appliances such as grills to provide additional functions such as aiding in heat transfer, providing a non-stick release surface, and/or providing a decorative color or aesthetic finish. Prior coating compositions have been based on fluoropolymers, which could potentially contain per/polyfluoroalkyl substances (PFAS). The regulatory landscape has become increasingly concerned about PFAS, including fluoropolymers, as a constituent of substances and/or mixtures.

SUMMARY

[0004] The present disclosure provides coating compositions for interior and exterior surfaces for articles of cookware and, in particular, to such coating compositions which are free of perfluoroalkyl substances (PFAS) and which demonstrate improved deep draw performance.

[0005] The present disclosure provides a coating composition for an interior surface of an article of cookware, comprising: a primary resin present in an amount from 10 wt.% to 30 wt.%, based on a total weight of the coating composition; a silicone oil present in an amount from 0.5 wt.% to 5 wt.%, based on the total weight of the coating composition; a dry lubricant, present in an amount from 0.1 wt.% to 17.5 wt.%, based on the total weight of the coating composition; a solvent; and wherein the coating composition comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on the total weight of the coating composition.

[0006] The present disclosure further provides a coated article comprising: a substrate; a coating coated onto the substrate, the coating comprising: a primary resin present in an amount from 25 wt.% to 90 wt.%, based on a total weight of the coating composition; a silicone oil present in an amount from 1 wt.% to 25 wt.%, based on the total weight of the coating composition; and a dry lubricant, present in an amount from 0.5 wt.% to 50 wt.%, based on the total weight of the coating composition; and wherein the coating composition comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition.

[0007] The present disclosure also provides a coating composition for an exterior surface of an article of cookware, comprising: a primary resin present in an amount from 10 wt.% to 30 wt.%, based on a total weight of the coating composition; a dry lubricant, present in an amount from 0. 1 wt.% to 17.5 wt.%, based on the total weight of the coating composition; a solvent; and wherein the coating composition comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition.

[0008] The present disclosure also provides a coated article comprising: a substrate; a coating coated onto the substrate, the coating comprising: a primary resin present in an amount from 25 wt.% to 90 wt.%, based on a total weight of the coating composition; and a dry lubricant, present in an amount from 0.5 wt.% to 50 wt.%, based on the total weight of the coating composition; wherein the coating comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0. 1 wt.% or less, based on a total weight of the coating composition.

[0009] The present disclosure also provides an article comprising: an interior surface coated with an interior coating composition, the interior coating composition comprising: a primary resin present in an amount from 25 wt.% to 90 wt.%, based on a total weight of the coating composition; a silicone oil present in an amount from 1 wt.% to 25 wt.%, based on the total weight of the coating composition; and a dry lubricant, present in an amount from 0.5 wt.% to 50 wt.%, based on the total weight of the coating composition; and wherein the coating comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition; and an exterior surface coated with an exterior coating composition, the exterior coating composition comprising: a primary resin present in an amount from 25 wt.% to 90 wt.%, based on a total weight of the coating composition; and a dry lubricant, present in an amount from 0.5 wt.% to 50 wt.%, based on the total weight of the coating composition; and wherein the coating comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition.

BRIEF DESCRIPTION OF THE DRAWINGS

[0001] The above-mentioned and other features and advantages of this disclosure, and the manner of attaining them, will become more apparent and the disclosure itself will be better understood by reference to the following description taken in conjunction with the accompanying drawings. These above-mentioned and other features of the disclosure may be used in any combination or permutation.

[0002] FIG. 1A illustrates an example substrate coated with the coating compositions of the present disclosure; and

[0003] FIG. IB illustrates an example cross section of the substrate in FIG. 1A coated with the coating compositions of the present disclosure.

[0004] Corresponding reference characters indicate corresponding parts throughout the several views. The exemplifications set out herein illustrate the disclosure, and such exemplifications are not to be construed as limiting the scope of the disclosure in any manner.

DETAILED DESCRIPTION

[0005] The present disclosure provides an interior surface coating composition and an exterior surface coating composition that may be applied to cookware. Further, the present disclosure provides fluoropolymer-free interior and exterior coating compositions.

[0010] I. Definitions

[0011] For purposes of the following detailed description, it is to be understood that the disclosure may assume various alternative variations and step sequences, except where expressly specified to the contrary. Moreover, other than in any operating examples or where otherwise indicated, all numbers expressing, for example, quantities of ingredients used in the specification and claims are to be understood as being modified in all instances by the term "about." For example, numerical ranges provided for weight percentages of components or amounts of components added should be construed as being modified by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth in the following specification and attached claims are approximations that may vary depending upon the desired properties to be obtained by the present disclosure. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of the claims, each numerical parameter should at least be construed in light of the number of reported significant digits and by applying ordinary rounding techniques.

[0012] Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the disclosure are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard variation found in their respective testing measurements.

[0013] Also, it should be understood that any numerical range recited herein is intended to include all sub-ranges subsumed therein. For example, a range of "1 to 10" is intended to include all sub-ranges from (and including) the recited minimum value of 1 to the recited maximum value of 10, that is, having a minimum value equal to or greater than 1 and a maximum value of equal to or less than 10.

[0014] The use of the singular includes the plural and plural encompasses singular, unless specifically stated otherwise. In addition, the use of "or" means "and/or" unless specifically stated otherwise, even though "and/or" may be explicitly used in certain instances.

[0015] “Primary resin” is used herein to describe either a thermoplastic or thermosetting resin.

[0016] ‘PF AS” is used herein to describe per- and polyfluorinated substances. These chemicals are used to make fluoropolymer coatings and products that resist heat, oils, stains, grease, and water.

[0017] “Dry lubricant” is used herein to describe materials that, although in the solid phase, reduce friction between two surfaces in contact with each other without the need for a liquid oil medium. The low-friction characteristics of most inorganic dry lubricants are attributed to a layered structure on the molecular level with weak bonding between layers. Such layers are able to slide relative to each other with minimal applied force, thus giving them their low friction properties. [0018] “Wet” coating composition is used herein to describe a liquid coating composition before it is cured.

[0019] “Dry” coating composition is used herein to describe a coating composition after it is cured.

[0020] “Deep draw” process is used herein to describe the process of forming a substrate into a specific shape using a punch and a die. Through force applied with the punch, the substrate is forced into a cavity of the die such that the substrate is molded into a specific shape.

[0021] II. Interior Surface Coating

[0022] The present disclosure provides a PFAS free interior coating for improved deep draw performance. The interior coating composition may comprise a primary resin, a silicone oil, and a dry lubricant. Optionally, the interior coating may also include a silicone resin. The interior coating composition may include a variety of additives.

[0023] The disclosed interior surface coating composition may be applied as a single coat system that lacks a primer or overcoat. Alternatively, the coating composition may also be applied as a multi-component coating system with an optional intervening primer layer and/or an optional overcoat.

[0024] A substrate coated with the coating composition of the present disclosure may exhibit excellent deep draw capabilities. The coating composition may also demonstrate wear and cracking resistance, allowing the substrate to be formed using a deep draw process without compromising the coating or reducing the structural integrity of the substrate.

[0025] The regulatory landscape has become increasingly concerned about PFAS, including fluoropolymers, as a constituent of substances and/or mixtures. The interior surface coating of the present disclosure is substantially free of PFAS.

[0026] A. Primary Resin

[0027] The primary resin may be a thermoplastic or thermosetting resin and may be selected from the group consisting of: polyphenylene sulfide (PPS), polyethersulfone (PES or PESU), polyether ether ketone (PEEK), polyphenylsulfone (PPSU), polyamide-imides (PAI), polyetherimides (PEI), and combinations of the foregoing.

Properties of the primary resin, such as melt points and glass transition temperatures (Tg), may be determined by differential scanning calorimetry (DSC), in which phase change or glass transition may be monitored as a function of temperature in the sample in comparison to a reference sample. The primary resin may have a melt point of about 200°C or greater, about 210 °C or greater, about 220 °C or greater, or about 250 °C or greater, as determined by differential scanning calorimetry (DSC) according to ASTM E794 - 06(2018), for example.

The primary resin may have a glass transition temperature (Tg) of about 90°C or greater, about 100 °C or greater, about 120 °C or greater, about 150 °C or greater, about 170 °C or greater, or about 200 °C or greater, as determined by differential scanning calorimetry (DSC) according to ASTM E1356 - 08(2014), for example.

The thermosetting polymer having a heat deflection/distortion temperature (HDT) of about 100 °C or greater, about 120 °C or greater, about 150 °C or greater, about 170 °C or greater, or about 200°C or greater, as determined by ASTM D648.

The above-described properties (high melt point, high glass transition temperature (Tg), and heat deflection/heat distortion temperature (HDT)) may contribute, either individually or in combination, to a coating having a continuous use temperature greater than 200°C.

[0028] The primary resin may be initially provided in particulate form. Additionally, the primary resin may be provided as a plurality of particles having a median diameter, or D50, as little as about 0.5 microns, 1 micron, 2 microns, 5 microns, as great as 10 microns, 20 microns, 50 microns, or within any range defined between any two of the foregoing values, such as 0.5 microns to 50 microns, 1 micron to 20 microns, or 5 microns to 10 microns. In one aspect, the primary resin is provided as a plurality of particles in which 99% of the particles have a particle diameter, or D99, as great as about 100 microns, 75 microns, 60 microns, as little as 50 microns, 40 microns, 30 microns, or less, or within any range defined between any two of the foregoing values.

[0029] The interior surface coating composition provided by the present disclosure can comprise a weight percentage of primary resin, for example, from 10 wt.%, 13 wt.%, 16 wt.%, 19 wt.%, to 22 wt.%, 25 wt.%, 28 wt.%, 30 wt. %, or any range including any two of these values as endpoints, such as 10 wt.% to 30 wt.%, 13 wt.% to 28 wt.%, 16 wt.% to 25 wt.%, or 19 wt.% to 22 wt.%, wherein the weight percent is based on the total weight of the “wet” interior surface coating composition.

[0030] Primary resin may be present in the cured coating composition, in an amount from 25 wt.%, 35 wt.%, 45 wt.%, 55 wt.% to 65 wt. %, 75 wt.%, 85 wt.%, 90 wt.%, or any range including any two of these values as endpoints, such as 25 wt.% to 90 wt.%, 35 wt.% to 85 wt.%, 45 wt.% to 75 wt.%, 55 wt.% to 65 wt.%, wherein the weight percent is based on the total weight of the “dry” interior surface coating composition.

[0031] B. Silicone Oil

The coating composition of the present disclosure may include a silicone oil to aid in slip resistance and to promote initial release properties of the coating, as well as to improve non-stick and cleanability characteristics.

The present coatings may include one or more silicone oils that are reactive. Additionally, the present coating compositions may include one or more silicone oils that are non-reactive. The viscosity of the silicone oil in the coating composition is from 100 cSt, 2000 cSt, 4000 cSt, 6000 cSt to 8000 cSt, 10,000 cSt, 12,000 cSt, 14,000 cSt, or any range including any two of these values as endpoints, such as 100 cSt to 14,000 cSt, 2000 cSt to 12,000 cSt, 4,000 cSt to 10,000 cSt, or 6,000 cSt to 8000 cSt.

The silicone oil may be present in the liquid or “wet” coating composition in an amount of 0.5 wt.%, 1 wt.%, 1.5 wt.%, 2 wt.%, 2.5 wt.% to 3 wt.%, 3.5 wt.%, 4 wt.%, 4.5 wt.%, 5 wt.%, or any range including any two of these values as endpoints, such as 0.5 wt.% to 5 wt.%, 1 wt.% to 4.5 wt.%, 1.5 wt.% to 4 wt.%, 2 wt.% to 3.5 wt.%, 2.5 wt.% to 3 wt.%, wherein the weight percent is based on the total weight of the interior surface coating composition.

Silicone oil may be present in the cured coating composition, in amounts from 1 wt.%, 5 wt.%, 10 wt.% to 15 wt.%, 20 wt.%, 25 wt.%, or any range including any two of these values as endpoints, such as 1 wt.% to 25 wt.%, 5 wt.% to 20 wt.%, 10 wt.% to 15 wt.%, wherein the weight percent is based on the total weight of the “dry” interior surface coating composition.

[0032] C. Dry Lubricant

[0033] The interior surface coating may also include a dry lubricant. The dry lubricant is used to reduce the friction between two surfaces, even though the dry lubricant is in a solid form. The low-friction characteristics of most inorganic dry lubricants are attributed to a layered structure on the molecular level with weak bonding between layers. Such layers can slide relative to each other with minimal applied force, thus giving them their low friction properties. Dry lubricants can include molybdenum disulfide (M0S2), molybdenum diselenide (MoSe2), tungsten disulfide (WS2), boron nitride (BN), graphite, and graphene. In one aspect of the interior surface coating, boron nitride may be used in high amounts to aid in the coatings release properties, discussed below. [0034] As discussed above, the interior surface coating may comprise a dry lubricant. The dry lubricant may be present in the composition in an amount from 0.1 wt.%, 1 wt.%, 5 wt.% to 10 wt.%, 15 wt.%, 17.5 wt.%, or any range including any two of these values as endpoints, such as 0.1 wt.% to 17.5 wt.%, 1 wt.% to 15 wt.%, 5 wt.% to 10 wt.%, wherein the weight percent is based on the total weight of the “wet” interior surface coating composition. [0035] Dry lubricant may be present in the cured coating composition, in amounts from 0.5 wt.%, 1 wt.%, 5 wt.%, 10 wt.%, to 20 wt.%, 30 wt.%, 40 wt.%, 50 wt.%, or any range including any two of these values as endpoints, such as 0.5 wt.% to 50 wt.%, 1 wt.% to 40 wt.%, 5 wt.% to 30 wt.%, 10 wt.% to 20 wt.%, wherein the weight percent is based on the total weight of the “dry” interior surface coating composition.

[0036] D. Silicone Resin

The interior coating composition of the present application may also include a silicone resin, such as a silicone epoxy, silicone polyester, silicone phenoxy, silicone polyurethane and combinations of the foregoing.

The silicone resin may be formed from organosiloxane-based solid polymers, such as methyl, silicone resin, phenyl silicone resin, or methyl-phenyl silicone resin, which are typically thermoset compositions capable of providing a range of mechanical characteristics, ranging from soft and rubbery to hard and brittle, and/or organosilane based sol-gel coatings, which are typically based on a hydrolysis and condensation reaction of the silane chemistry. The hardness of the composition is generally proportional to the degree of crosslinking in the composition. The degree of crosslinking may in turn be dependent upon the nature of the organosiloxane unit used in the composition. As shown in the table below, organosiloxanes may be described according to the degree of oxygen substitution, or functionality, on the central silicone.

Generally, compositions including higher fractions of T (trifunctional) and Q (tetrafunctional) units display higher degrees of crosslinking.

The silicone resin may be present in the liquid or “wet” interior coating composition in an amount from 0 wt.%, 1 wt.%, 2 wt.%, to 4 wt.%, 6 wt.%, 9 wt.%, or any range including any two of these values as endpoints, such as 0 wt.% to 9 wt.%, 1 wt.% to 6 wt.%, 2 wt.% to 4 wt.%, wherein the weight percent is based on the total weight of the interior surface coating composition.

The silicone resin may be present in the “dry” interior coating composition in an amount from 0 wt.%, 5 wt.%, 10 wt.% to 15 wt.%, 20 wt.%, 25 wt.%, or any range including any two of these values as endpoints, such as 0 wt.% to 25 wt.%, 5 wt.% to 20 wt.%, 10 wt.% to 15 wt.%, wherein the weight percent is based on the total weight of the interior surface coating composition.

E. Solvent

The interior coating composition may include one or more solvents. Exemplary solvents include water, alcohols such as C1-C8 alcohols including methanol, ethanol, isopropanol, and t-butanol, C2-C8 ketones including acetone, C2-C20 ethers including dipropylene glycol methyl ether and other protic or non-protic solvents like dimethylsulfoxide or N-methylpyrrolidone.

The solvent may be present in the composition in an amount from 65 wt.%, 70 wt.%, 75 wt.%, to 80 wt.%, 85 wt.% or any value encompassed by these endpoints, such as 65 wt.% to 85 wt.%, 70 wt.% to 80 wt.% or 70 wt.% to 75 wt.%, wherein the weight percent is based on the total weight of the “wet” coating composition.

After the coating has been applied and cured, the total coating composition may be substantially free of solvent. In other words, the solvent may be present in the composition in an amount from 0 wt.%, 0.1 wt.% or 1 wt.%, 1.5 wt.% or any value encompassed by these endpoints, such as 0 wt.% to 1.5 wt.%, or 0.1 wt.% to 1 wt.%, wherein the weight percent is based on the total weight of the “dry” coating composition.

F. Additives [0006] Additives may be present in the interior coating composition of the present disclosure in addition to the components described above. These additives may comprise components to improve stability, applicability and aesthetics. Additives that may be included in the present coating composition may include flow additives, matting agents, and pigments.

[0007] The total amount of such additives, based on the “wet” weight of the coating composition prior to a substrate followed by curing, may comprise from 0 wt.%, 1 wt.%, 5 wt.% to 10 wt.%, 15 wt.%, 20 wt.% or any other range combination using these endpoints, such as 0 wt.% to 20 wt.%, 1 wt.% to 15 wt.%, or 5 wt.% to 10 wt.%, wherein the weight percentage is based on the total weight of the “wet” coating composition.

[0008] After the coating is applied and cured, the additives may be present in the coating composition from 0 wt.%, 20 wt.%, 30 wt.% to 40 wt.%, 50 wt.%, 60 wt.%, or any range including any two of these values as endpoints, such as 0 wt.% to 60 wt.%, 20 wt.% to 50 wt.%, or 30 wt.% to 40 wt.%, wherein the weight percent is based on the total weight of the “dry” coating composition.

[0037] III. Exterior Surface Coating

[0038] The present disclosure provides a PFAS free exterior coating for improved deep draw performance. The exterior coating composition may comprise a primary resin, and a dry lubricant. Optionally, the exterior coating may also include a silicone resin.

[0039] The disclosed exterior surface coating composition may be applied as a single coat system that lacks a primer or overcoat. Alternatively, the coating composition may also be applied as a multi-component coating system with an intervening primer layer and/or an overcoat.

[0040] A substrate coated with the coating composition of the present disclosure may exhibit excellent deep draw capabilities. The coating composition may add wear and cracking resistance to the substrate, allowing the substrate to be formed using the deep draw process without reducing the structural integrity of the substrate.

[0041] The regulatory landscape has become increasingly concerned about PFAS, including fluoropolymers, as a constituent of substances and/or mixtures. The exterior surface coating of the present disclosure is substantially free of PFAS.

[0042] A. Primary Resin

[0043] The exterior coating of the present disclosure may include a primary resin as described in section II. A, above. The exterior surface coating composition provided by the present disclosure can comprise a weight percentage of primary resin, for example, 10 wt.%, 13 wt.%, 16 wt.%, 19 wt.%, to 22 wt.%, 25 wt.%, 28 wt.%, 30 wt. %, or any range including any two of these values as endpoints, such as 10 wt.% to 30 wt.%, 13 wt.% to 28 wt.%, 16 wt.% to 25 wt.%, or 19 wt.% to 22 wt.%, wherein the weight percent is based on the total weight of the “wet” exterior surface coating composition.

[0044] Primary resin may be present in the cured coating composition, in an amount from 25 wt.%, 35 wt.%, 45 wt.%, 55 wt.% to 65 wt. %, 75 wt.%, 85 wt.%, 90 wt.%, or any range including any two of these values as endpoints, such as 25 wt.% to 90 wt.%, 35 wt.% to 85 wt.%, 45 wt.% to 75 wt.%, 55 wt.% to 65 wt.%, wherein the weight percent is based on the total weight of the “dry” exterior surface coating composition.

[0045] B. Dry Lubricant

[0046] To lubricate an article coated with the exterior surface coating, the exterior surface coating may comprise a dry lubricant, as described above in section II.C. In one aspect of the exterior surface coating, graphite may be used in high amounts to aid in the coatings release properties, discussed below. The exterior surface coating composition provided by the present disclosure can comprise a weight percentage of dry lubricant, for example, from 0.1 wt.%, 1 wt.%, 5 wt.% to 10 wt.%, 15 wt.%, 17.5 wt.%, or any range including any two of these values as endpoints, such as 0.1 wt.% to 17.5 wt.%, 1 wt.% to 15 wt.%, 5 wt.% to 10 wt.%, wherein the weight percent is based on the total weight of the “wet” exterior surface coating composition.

[0047] Dry lubricant may be present in the cured coating composition, in amounts from 0.5 wt.%, 1 wt.%, 5 wt.%, 10 wt.%, to 20 wt.%, 30 wt.%, 40 wt.%, 50 wt.%, or any range including any two of these values as endpoints, such as 0.5 wt.% to 50 wt.%, 1 wt.% to 40 wt.%, 5 wt.% to 30 wt.%, 10 wt.% to 20 wt.%, wherein the weight percent is based on the total weight of the “dry” exterior surface coating composition.

[0048] C. Silicone Resin

The exterior coating of the present disclosure may include a silicone such as those described in section II.D., above. The exterior surface coating composition provided by the present disclosure can comprise a weight percentage of silicone resin, for example, from 0 wt.%, 1 wt.%, 2 wt.%, to 4 wt.%, 6 wt.%, 9 wt.%, or any range including any two of these values as endpoints, such as 0 wt.% to 9 wt.%, 1 wt.% to 6 wt.%, 2 wt.% to 4 wt.%, wherein the weight percent is based on the total weight of the exterior surface coating composition. The silicone resin may be present in the “dry” interior coating composition in an amount from 0 wt.%, 5 wt.%, 10 wt.% to 15 wt.%, 20 wt.%, 25 wt.%, or any range including any two of these values as endpoints, such as 0 wt.% to 25 wt.%, 5 wt.% to 20 wt.%, 10 wt.% to 15 wt.%, wherein the weight percent is based on the total weight of the exterior surface coating composition.

[0049] D. Solvent

The exterior coating composition may include one or more solvents, similar to the interior coating composition. Exemplary solvents include water, alcohols such as C1-C8 alcohols including methanol, ethanol, isopropanol, and t-butanol, C2-C8 ketones including acetone, C2-C20 ethers including dipropylene glycol methyl ether and other protic or non- protic solvents like dimethylsulfoxide or N-methylpyrrolidone.

After the coating has been applied and cured, the total coating composition may be substantially free of solvent. In other words, the solvent may be present in the composition in an amount from 0 wt.%, 0.1 wt.% or 1 wt.% , 1.5 wt.% or any value encompassed by these endpoints, such as 0 wt.% to 1.5 wt.%, or 0.1 wt.% to 1 wt.%, wherein the weight percent is based on the total weight of the “dry” coating composition.

E. Silicone Oil

The exterior coating of the present disclosure may include a silicone such as those described in section II. B., above. The silicone oil may be present in the liquid or “wet” coating composition in an amount of 0.5 wt.%, 1 wt.%, 1.5 wt.%, 2 wt.%, 2.5 wt.% to 3 wt.%, 3.5 wt.%, 4 wt.%, 4.5 wt.%, 5 wt.%, or any range including any two of these values as endpoints, such as 0.5 wt.% to 5 wt.%, 1 wt.% to 4.5 wt.%, 1.5 wt.% to 4 wt.%, 2 wt.% to 3.5 wt.%, 2.5 wt.% to 3 wt.%, wherein the weight percent is based on the total weight of the exterior surface coating composition.

Silicone oil may be present in the cured coating composition, in amounts from 1 wt.%, 5 wt.%, 10 wt.% to 15 wt.%, 20 wt.%, 25 wt.%, or any range including any two of these values as endpoints, such as 1 wt.% to 25 wt.%, 5 wt.% to 20 wt.%, 10 wt.% to 15 wt.%, wherein the weight percent is based on the total weight of the “dry” exterior surface coating composition.

F. Additives

Similar to the interior coating composition disclosed above, additives may be present in the exterior coating composition of the present disclosure in addition to the components described above. These additives may comprise components to improve stability, applicability and aesthetics. Additives that may be included in the present exterior coating composition may include flow additives, matting agents, and pigments.

[0009] The total amount of such additives, based on the “wet” weight of the coating composition prior to a substrate followed by curing, may comprise from 0 wt.%, 1 wt.%, 5 wt.% to 10 wt.%, 15 wt.%, 20 wt.% or any other range combination using these endpoints, such as 0 wt.% to 20 wt.%, 1 wt.% to 15 wt.%, or 5 wt.% to 10 wt.%, wherein the weight percentage is based on the total weight of the “wet” coating composition.

[0010] After the coating is applied and cured, the additives may be present in the coating composition from 0 wt.%, 20 wt.%, 30 wt.% to 40 wt.%, 50 wt.%, 60 wt.%, or any range including any two of these values as endpoints, such as 0 wt.% to 60 wt.%, 20 wt.% to 50 wt.%, or 30 wt.% to 40 wt.%, wherein the weight percent is based on the total weight of the “dry” coating composition.

IV. Base Coat

[0050] Coating compositions of the present disclosure may be applied in a monocoat system or in a multi-coat system. An optional base coat layer may be applied to the substrate before the coating compositions of the present application in multi-coat system. The base coat layer may comprise a primary resin, pigment, solvent, and additives. The base coat composition may comprise a weight percentage of: primary resin from 10 wt. % to 30 wt. %; pigment from 0 wt. % to 20 wt. %; additives from 0 wt. % to 5 wt. %; and solvent from 65 wt. % to 85 wt. %, wherein the weight percent is based on the total weight of the “wet” interior surface coating composition.

[0051] The optional base coat may be dried with a part metal temperature (PMT) from 250°C to 400°C, such as 340°C, and may have a dry film thickness (DFT) from 2-10 m, such as from 5 to 6 pm. The cured base coat composition may comprise a primary resin from 28 wt. % to 86 wt. %, a pigment from 0 wt. % to 60 wt. %, and additives from 0 wt. % to 10 wt. %, for example, wherein the weight percent is based on the total weight of the “dry” interior surface coating composition. [0052] V. Method of Applying Coatings

[0053] Various application and curing methods may be used to apply the interior and exterior coating compositions to a substrate. Substrates may be forms of cookware, bakeware, or other articles. The substrate may be coated on either an interior surface with the interior coating composition described in the present disclosure, on an exterior surface with the exterior coating composition described in the present disclosure, or coated on both the interior and exterior surfaces with the interior and exterior coating compositions described in the present disclosure, respectively.

[0054] A. Substrates

The coating compositions of the present application may be applied to the interior and exterior surface of a substrate. Suitable substrates may include metals, ceramic materials, plastics, composites, and minerals. Suitable metals may include typically electrolytic chromium coated steel (ECCS), aluminized steel, stainless steel, aluminum, and carbon steel, for example. Suitable plastics and composites include high melting point plastics and composites, such as plastics having a melting point higher than the cure temperature of the coating formulation, including polyester, polypropylene, ABS, polyethylene, carbon fiber epoxy composites, and glass fiber epoxy composites, for example. Suitable minerals include micas, basalts, aluminas, silicas, and wollastonites, marble and granite, for example.

The substrate may be a portion of a pan or other article of cookware or bakeware. Referring to Fig. 1A, an article of cookware 10 is shown in the form of a pan, which generally includes a circular bottom wall 12, an annular side wall 14, and a handle 16. Cookware article 10 is typically a metal or metal alloy such as stainless steel, aluminum, and carbon steel, but may also be a ceramic material, a plastic or a composite, for example.

Bottom and side walls 12 and 14 include an interior or food contact surface 18 facing the food to be cooked, as well as an opposite, exterior or heat contact surface 20 which, in use, faces, is adjacent to, or contacts a heat source or heating element 22. As shown in Fig. IB, article of cookware 10 may include an interior coating 24 over at least a portion of its respective interior surface 18, including at least a portion of, or all of, bottom wall 12 and/or side walls 14. Additionally, article of cookware 10 may include an exterior coating 26 over at least a portion of its respective exterior surface 20.

In this manner, the present coating compositions may be used as either an interior coating or an exterior coating. Although article of cookware 10 is shown as a pan, the present coating compositions may also be used to form coatings for other articles of bakeware, as well as other articles of cookware, such as skillets, griddles, pots and the like, or other cooking articles which are exposed to heat in use.

The present coating compositions may also be used to coat non-cookware articles, such as rollers, molds, conduits and fasteners, which require a non-stick or release property and/or which are exposed to heat in use.

[0055] B. Application and Curing

[0056] i. Spray Coating

[0057] The interior and exterior coating compositions of the present disclosure can be applied to a substrate using spray coating. Spray coating involves loading the coating composition into device wherein the coating composition is then forced through a nozzle such that the composition is made into a fine aerosol spray. The spray is then directed over a substrate for an even coating.

[0058] ii. Roller Coating

[0059] Roller coating is the process of printing a composition onto a substrate using roll-to-roll technique. The roll-to-roll technique typically uses a single or multiple rollers, which wind the substrate over and through the roller/s covered in the printed composition. The composition is applied to the substrate as the substrate moves along the roller/s.

[0060] iii. Curtain and Coil Coating

[0061] Curtain and coil coating are process of continuously coating a substrate by exposing the substrate to an uninterrupted curtain or flow of fluid. An uncoated substrate may be placed on a conveyor belt, may be conveyed by a series of rollers, or may be pulled in a continuous sheet of material. The substrate is then exposed to the coating such that the substrate is coated with the coating composition. The interior and exterior coating composition of the present disclosure may be applied with the coil coating process.

[0062] C. Curing

Once a substrate has been coated in the interior and/or exterior coating composition of the present disclosure, the coating compositions may be cured. Curing may be accomplished at elevated temperatures, such as in a box or tunnel oven.

The coating compositions may be applied in layers and each layer may be baked dry then cooled to room temperature prior to the application of a subsequent layer.

Interior coating compositions and the exterior coating compositions of the present disclosure may be cured with a part metal temperature (PMT) from 325°C, 375°C, 400°C to 425°C, 450°C, or any range including any two of these values as endpoints, such as 325°C to 450°C, 375°C to 425°C, or 400°C to 425°C.

The interior coating compositions and the exterior coating compositions are cured so that it has a dry film thickness (DFT) from 3 pm, 10 pm, 15 pm to 20 pm, 25 pm, 30 pm, or any range including any two of these values as endpoints, such as 3 pm to 30 pm, 10 pm to 25 pm, or 15 pm to 20 pm.

[0063] D. Deep Draw Process

[0064] Deep drawing is a process of deforming a substrate, such as a sheet of metal or other material, through mechanical action such that the substrate is formed into a specific structure. The process is performed with a punch and die. A punch is the desired shape of the substrate. The die is a cavity shaped to match the shape of the punch, while being slightly wider. The substrate is placed across the opening of the die and force is applied to each end of the substrate on either side of the opening to the cavity of the die. The punch is then used to apply force onto the substrate as it moves into the die cavity such that the substrate is forced into the die cavity into the shape of the punch. With a lot of force applied to the substrate, the deep drawing process may cause failures in the substrate material. The interior and exterior coatings described in the present application increase the surface strength of the substrate, such that a coated substrate has improved deep drawing performance.

[0065] VI. Properties of Interior and Exterior Surface Coating

[0066] Due to the formulation of the interior and exterior coating compositions, as discussed above, an assortment of properties of the coatings may be observed when the coating is applied to a substrate.

[0067] A. PFAS Free

[0068] There is an ever-changing landscape surrounding PFAS. Fluoropolymers are included in the definition of PFAS according to the Organization for Economic Co-operation and Development (OECD). Therefore, coatings that have a low weight percentage of PFAS may offer an alternative to traditional coating compositions containing PFAS. The interior and exterior coating compositions of the present disclosure may comprise a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating and/or have a total content of PFAS less than 1 ppm, less than 0.1 ppm, less than 0.01, or less than 0.001 ppm, based on a total wight of the coating.

[0069] B. Surface Release [0070] It is preferential for an article of cook or bakeware to be coated such that items easily release from the surface of the article. The surface release of a coated substrate may be described as the ability of a coating to allow for food or other substances to release from the surface coated with the coating. This may be tested by cooking a food, such as a steak, on a coated surface of a substrate and observing how well the cooked food releases from the surface of the substrate. Based on the composition of the interior and exterior coatings disclosed in the present application, a substrate coated with the coatings may experience excellent surface release properties.

[0071] C. Durability /Scratch Resistance

[0072] Deep drawing involves subjecting a substrate to substantial force to form the substrate into a specific configuration/shape to form an article, such as an article of cookware. A substrate with low durability and scratch resistance may be damaged during the deep drawing process and use during the use the lifetime of the substrate. The interior and exterior coatings described in the present disclosure increase the durability and scratch resistance of a coated substrate. This increased durability and scratch resistance may allow a substrate to be formed into a variety of shapes using the deep drawing process and extend the lifetime of the substrate.

EXAMPLES

[0073] Aspects of the present disclosure are further illustrated by reference to the following examples. It will be apparent to those skilled in the art that many modifications, both to materials, and methods, may be practiced without departing from the scope of the disclosure.

Examples 1-6 and Comparative Example 1 Interior and exterior coating compositions and methods

[0074] Examples 1 -6 were formulated as described below according to the coating compositions of the present disclosure. The coating compositions were then applied to a substrate. Additionally, a comparative example is provided to compare the properties of a known coating composition and the coating composition of the present disclosure.

Example 1 : A coating system including an interior base layer composition according to table 1, an interior top layer according to table 2 and an exterior layer according to table 6. Example 2: A coating system including an interior base layer composition according to table 1, an interior top layer according to table 3 and an exterior layer according to table 6.

Example 3: A coating system including an interior base layer composition according to table 1 , an interior top layer according to table 4 and an exterior layer according to table 6.

Example 4: A coating system including an interior base layer composition according to table 1, an interior top layer according to table 4 and an exterior layer according to table 7.

Example 5: A coating system including an interior base layer composition according to table 1 , an interior top layer according to table 4 and an exterior layer according to table 8.

Example 6: A coating system including an interior base layer composition according to table 1, an interior top layer according to table 4 and an exterior layer according to table 9.

Comparative Example 1 : A coating system including an interior base layer composition according to table 1, an interior top layer according to table 5 and an exterior layer according to table 5.

Table 1

Interior Base Layer Composition

Table 2

Interior Top Layer Composition 1

Table 3 Interior Top Layer Composition 2

Table 4

Interior Top Layer Composition 3

Table 5

Interior/Exterior Coating Composition 4

Table 6

Exterior Composition 1

Table 7

Exterior Composition 2

Table 8

Exterior Composition 3

Table 9

Exterior Composition 4 [0075] Coating Application: Each coating layer was applied as a wet film by k-bar application to a substrate of ECCS with a thickness of 0.38 mm. The coating layers were applied in the following in order and each layer was baked dry then cooled to room temperature prior to the application of the subsequent layer: 1. Exterior layer, dried with a PMT of 340oC, DFT: 5-6 pm. 2. Interior base layer dried with a PMT of 340oC, DFT: 5-6 pm. 3. Interior Top layer cured with a PMT of 400oC, DFT: 5-6 pm.

[0076] Deep Drawing: Each example was deep drawn to form both a round and square cup according to the following parameters. Round Cup with collar: Equipment: Erichsen Model 124 NS, cup dimensions: diameter 3 cm, depth 2 cm, sheet holding force: 8 kN, drawing force: 12 kN, drawing speed: 5. Square cup: Equipment: Erichsen Model 224 NS, cup dimensions: length 3.5 cm, width 3.5 cm, depth 3 cm, sheet holding force: 6 kN, drawing force: 10 kN, drawing speed: 5.

[0077] Examples 1 - 6 contain dry lubricants within the coating system and show good deep draw performance, forming both the square and round cups with no fracturing or warping of the metal substrate and no delamination of the coating system.

[0078] Comparative Example 1 does not contain any dry lubricant within the coating system and demonstrates poor deep draw performance as neither cup could be formed without significant damage to the coating system. Particularly on the square cup extensive delamination was observed during the deep draw process.

[0079] Example top layer coating formulations 1 - 4 (tables 2 - 5) have been applied directly to a substrate of ECCS with a thickness of 0.29 mm, without a base layer and found to have good cross-hatch adhesion performance. The coatings were applied as a wet film by k-bar and then cured for 60 seconds at 420oC to achieve a DFT of 5 - 6 pm.

ASPECTS

[0080] Aspect 1 is a coating composition for an interior surface of an article of cookware, comprising: a primary resin present in an amount from 10 wt.% to 30 wt.%, based on a total weight of the coating composition; a silicone oil present in an amount from 0.5 wt.% to 5 wt.%, based on the total weight of the coating composition; a dry lubricant, present in an amount from 0.1 wt.% to 17.5 wt.%, based on the total weight of the coating composition; a solvent; and wherein the coating composition comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on the total weight of the coating composition.

[0081] Aspect 2 is the coating composition of Aspect 1, further comprising a silicone resin present in an amount from 0.1 wt.% to 9 wt.%, based on the total weight of the coating composition.

[0082] Aspect 3 is the coating composition of any one of Aspects 1-2, wherein the dry lubricant is selected from molybdenum disulfide, molybdenum diselenide, tungsten disulfide, boron nitride, graphite, graphene, and combinations of the foregoing.

[0083] Aspect 4 is the coating composition of Aspect 3, wherein the dry lubricant is boron nitride.

[0084] Aspect 5 is the coating composition of any one of Aspects 1-4, wherein the primary resin is present in an amount from 15 wt. % to 22 wt. %, based on the total weight of the coating composition.

[0085] Aspect 6 is the coating composition of any one of Aspects 1-5, wherein the silicon oil is present in an amount from 0.6 wt. % to 3 wt. %, based on the total weight of the coating composition.

[0086] Aspect 7 is the coating composition of any one of Aspects 1-6, wherein the dry lubricant is present in an amount from 0.5 wt. % to 5 wt. %, based on the total weight of the coating composition.

[0087] Aspect 8 is a coated article comprising: a substrate; a coating coated onto the substrate, the coating comprising: a primary resin present in an amount from 25 wt.% to 90 wt.%, based on a total weight of the coating composition; a silicone oil present in an amount from 1 wt.% to 25 wt.%, based on the total weight of the coating composition; and a dry lubricant, present in an amount from 0.5 wt.% to 50 wt.%, based on the total weight of the coating composition; and wherein the coating composition comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition.

[0088] Aspect 9 is the article of Aspect 8, wherein the coating composition further comprising a silicone resin present in an amount from 0. 1 wt.% to 25 wt.%, based on the total weight of the coating composition.

[0089] Aspect 10 is the article of any one of Aspects 8-9, wherein the dry lubricant is selected from molybdenum disulfide, molybdenum diselenide, tungsten disulfide, boron nitride, graphite, graphene, and combinations of the foregoing. [0090] Aspect 11 is the article of Aspect 10, wherein the dry lubricant is boron nitride.

[0091] Aspect 12 is the article of any one of Aspects 8-11, wherein the primary resin is present in an amount from 50 wt. % to 85 wt. %, based on the total weight of the coating composition.

[0092] Aspect 13 is the article of any one of Aspects 8-12, wherein the silicon oil is present in an amount from 1.5 wt. % to 10 wt. %, based on the total weight of the coating composition.

[0093] Aspect 14 is the article of any one of Aspects 8-13, wherein the dry lubricant is present in an amount from 1 wt. % to 10 wt. %, based on the total weight of the coating composition.

[0094] Aspect 15 is the article of any one of Aspects 8-14, wherein the article is selected from an article of cookware, an article of bakeware, and a cooking appliance. [0095] Aspect 16 is the article of any one of Aspects 8-15, wherein the coated article lacks an overcoat applied onto the coating composition.

[0096] Aspect 17 is the article of any one of claims 8-16, wherein the coating composition is applied directly to the substrate.

[0097] Aspect 18 is a coating composition for an exterior surface of an article of cookware, comprising: a primary resin present in an amount from 10 wt.% to 30 wt.%, based on a total weight of the coating composition; a dry lubricant, present in an amount from 0. 1 wt.% to 17.5 wt.%, based on the total weight of the coating composition; a solvent; and wherein the coating composition comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition.

[0098] Aspect 19 is the coating composition of claim 18, further comprising a silicone resin present in an amount from 0. 1 wt.% to 9 wt.%, based on a total weight of the coating composition.

[0099] Aspect 20 is the coating composition of any one of Aspects 18-19, further comprising silicon oil in an amount from 0.5 % to 5 %, based on the total weight of the coating composition.

[0100] Aspect 21 is the coating composition of any one of Aspects 18-20, wherein the dry lubricant is selected from molybdenum disulfide, molybdenum diselenide, tungsten disulfide, boron nitride, graphite, graphene, and combinations of the foregoing. [0101] Aspect 22 is the coating composition of claim 18-21, wherein the dry lubricant is graphite.

[0102] Aspect 23 is the coating composition of any one of claims 18-22, wherein the primary resin is present in an amount from 15 wt. % to 25 wt. %, based on the total weight of the coating composition.

[0103] Aspect 24 is the coating composition of any one of Aspects 18-23, wherein the dry lubricant is present in an amount from 2 wt. % to 10 wt. %, based on the total weight of the coating composition.

[0104] Aspect 25 is a coated article comprising: a substrate; a coating coated onto the substrate, the coating comprising: a primary resin present in an amount from 25 wt.% to 90 wt.%, based on a total weight of the coating composition; and a dry lubricant, present in an amount from 0.5 wt.% to 50 wt.%, based on the total weight of the coating composition; wherein the coating comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition.

[0105] Aspect 26 is the article of Aspect 25, wherein the coating composition further comprising a silicone resin present in an amount from 0.1 wt.% to 25 wt.%, based on the total weight of the coating composition.

[0106] Aspect 27 is the article of any one of Aspects 25-26, wherein the coating composition further comprises a silicone oil present in an amount from 1 wt.% to 25 wt.%, based on the total weight of the coating composition.

[0107] Aspect 28 is the article of any one of Aspects 25-27, wherein the dry lubricant is selected from molybdenum disulfide, molybdenum diselenide, tungsten disulfide, boron nitride, graphite, graphene, and combinations of the foregoing.

[0108] Aspect 29 is the article of Aspect 28, wherein the dry lubricant is graphite.

[0109] Aspect 30 is the article of any one of Aspects 25-29, wherein the primary resin is present in an amount from 60 wt. % to 80 wt. %, based on the total weight of the coating composition.

[0110] Aspect 31 is the article of Aspect 27, wherein the silicon oil is present in an amount from 1.5 wt. % to 10 wt. %, based on the total weight of the coating composition.

[0111] Aspect 32 is the article of any one of Aspects 25-31, wherein the dry lubricant is present in an amount from 10 wt. % to 30 wt. %, based on the total weight of the coating composition. [0112] Aspect 33 is the article of any one of Aspects 25-32, wherein the article is selected from an article of cookware, an article of bakeware, and a cooking appliance.

[0113] Aspect 34 is the article of any one of Aspects 25-33, wherein the coated article lacks an overcoat applied onto the coating composition.

[0114] Aspect 35 is the article of any one of claims 25-34, wherein the coating composition is applied directly to the substrate.

[0115] Aspect 36 is an article comprising: an interior surface coated with an interior coating composition, the interior coating composition comprising: a primary resin present in an amount from 25 wt.% to 90 wt.%, based on a total weight of the coating composition; a silicone oil present in an amount from 1 wt.% to 25 wt.%, based on the total weight of the coating composition; and a dry lubricant, present in an amount from 0.5 wt.% to 50 wt.%, based on the total weight of the coating composition; and wherein the coating comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition; and an exterior surface coated with an exterior coating composition, the exterior coating composition comprising: a primary resin present in an amount from 25 wt.% to 90 wt.%, based on a total weight of the coating composition; and a dry lubricant, present in an amount from 0.5 wt.% to 50 wt.%, based on the total weight of the coating composition; and wherein the coating comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on a total weight of the coating composition.

Claims

CLAIMS What is claimed is:

1. A coating composition for an interior surface of an article of cookware, comprising: a primary resin present in an amount from 10 wt.% to 30 wt.%, based on a total weight of the coating composition; a silicone oil present in an amount from 0.5 wt.% to 5 wt.%, based on the total weight of the coating composition; a dry lubricant, present in an amount from 0.1 wt.% to 17.5 wt.%, based on the total weight of the coating composition; a solvent; and wherein the coating composition comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0.1 wt.% or less, based on the total weight of the coating composition.

2. The coating composition of claim 1, further comprising a silicone resin present in an amount from 0.1 wt.% to 9 wt.%, based on the total weight of the coating composition.

3. The coating composition of any one of claims 1-2, wherein the dry lubricant is selected from molybdenum disulfide, molybdenum diselenide, tungsten disulfide, boron nitride, graphite, graphene, and combinations of the foregoing.

4. The coating composition of claim 3, wherein the dry lubricant is boron nitride.

5. The coating composition of any one of claims 1-4, wherein the primary resin is present in an amount from 15 wt. % to 22 wt. %, based on the total weight of the coating composition.

6. The coating composition of any one of claims 1-5, wherein the silicon oil is present in an amount from 0.6 wt. % to 3 wt. %, based on the total weight of the coating composition.

7. The coating composition of any one of claims 1-6, wherein the dry lubricant is present in an amount from 0.5 wt. % to 5 wt. %, based on the total weight of the coating composition.

8. A coated article comprising: a substrate; and the coating of any one of claims 1-7 coated on the substrate.

9. A coating composition for an exterior surface of an article of cookware, comprising: a primary resin present in an amount from 10 wt.% to 30 wt.%, based on a total weight of the coating composition; a dry lubricant, present in an amount from 0.1 wt.% to 17.5 wt.%, based on the total weight of the coating composition; a solvent; and wherein the coating composition comprises a total amount of perfluorinated and polyfluorinated alkyl compounds of 0. 1 wt.% or less, based on a total weight of the coating composition.

10. The coating composition of claim 9, further comprising a silicone resin present in an amount from 0. 1 wt.% to 9 wt.%, based on a total weight of the coating composition.

11. The coating composition of any one of claims 9-10, further comprising silicon oil in an amount from 0.5 % to 5 %, based on the total weight of the coating composition.

12. The coating composition of any one of claims 9-11, wherein the dry lubricant is selected from molybdenum disulfide, molybdenum diselenide, tungsten disulfide, boron nitride, graphite, graphene, and combinations of the foregoing.

13. The coating composition of any one of claims 9-12, wherein the primary resin is present in an amount from 15 wt. % to 25 wt. %, based on the total weight of the coating composition.

14. The coating composition of any one of claims 9-13, wherein the dry lubricant is present in an amount from 2 wt. % to 10 wt. %, based on the total weight of the coating composition.

15. A coated article comprising: a substrate; and the coating of any one of claims 9-14 coated onto the substrate.