Classifications

• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • 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
  • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • 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
  • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
  • C09D7/40—Additives
  • C09D7/60—Additives non-macromolecular
  • C09D7/63—Additives non-macromolecular organic
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
  • B05D3/007—After-treatment
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • 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
  • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • 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
  • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F41—WEAPONS
  • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
  • F41H13/00—Means of attack or defence not otherwise provided for
  • F41H13/0006—Ballistically deployed systems for restraining persons or animals, e.g. ballistically deployed nets
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F41—WEAPONS
  • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
  • F41H9/00—Equipment for attack or defence by spreading flame, gas or smoke or leurres; Chemical warfare equipment
  • F41H9/04—Gas-blowing apparatus, e.g. for tear gas

Definitions

• Hydrophobic substituted alcohols are employed in coatings to provide surface effects to various articles.
• Fluorinated polymer compositions are used in the preparation of a wide variety of surface treatment materials to provide surface effects to substrates. Many such compositions are fluorinated acrylate polymers or copolymers which contain predominantly eight or more carbons in the perfluoroalkyl chain to provide the desired properties.
• Honda, et al., in Macromolecules, 2005, 38, 5699-5705 teach that for perfluoroalkyl chains of greater than 8 carbons, orientation of the perfluoroalkyl groups, designated R f groups, is maintained in a parallel configuration while for such chains having 6 or less carbons, reorientation occurs. This reorientation is recited to decrease surface properties such as contact angle.
• Non-fluorinated copolymers are known to provide water repellency and optionally stain release to textiles, but are less effective than the fluorinated counterparts. Fluoroadditives have also been used to improve cleanability of paints, including latex paints, which generally have poor stain and soil resistance.
• U.S. Pat. No. 7,820,745 discloses aqueous water- and oil-repellent compositions containing a fluorinated copolymer in aqueous medium and a sorbitan ester used in small amounts to act as a surfactant.
• non-fluorinated or partially fluorinated compositions that provide surface effects to treated substrates, with performance results comparable to fluorinated treating agents. Also desirable is a non-fluorinated composition that can be bio-based derived. The present invention meets these needs.
• the present invention relates to a coated article comprising a partial or complete durable coating on the surface of an article, wherein the coating comprises a coating base and 0.1 to 5% by weight of a hydrophobic compound, based on the total solids weight of the coating, selected from a cyclic or acyclic alcohol which is substituted with at least one —R 1 , —C(O)R 1 , —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m R 2 , —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m C(O)R 1 , or mixtures thereof; where the cyclic or acyclic alcohol is selected from a pentaerythritol, saccharide, reduced sugar, aminosaccharide, citric acid, aldonic acid, or aldonic acid lactone; wherein each n is independently 0 to 20; each m is independently 0 to 20; m+n is greater than 0; each
• the present invention further comprises a method of imparting a surface effect to an article comprising contacting a the surface of the article with a durable coating to form a partially or completely coated article, wherein the coating comprises a coating base and 0.1 to 5% by weight of a hydrophobic compound, based on the total solids weight of the coating, selected from a cyclic or acyclic alcohol which is substituted with at least one —R 1 , —C(O)R 1 , —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m R 2 , —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m C(O)R 1 , or mixtures thereof; where the cyclic or acyclic alcohol is selected from a pentaerythritol, saccharide, reduced sugar, aminosaccharide, citric acid, aldonic acid, or aldonic acid lactone; wherein each n is independently 0 to 20; each m
• the present invention provides coated articles having improved water repellency, oil or stain repellency, and/or other hydrophobic surface effects.
• the treated articles provide enhanced performance and durability compared to traditional non-fluorinated commercially available treatment agents.
• the coating materials of the present invention can be derived from bio-sourced materials.
• the coatings formed are durable, by which is meant that the coatings are lasting films that are not readily removed by water or cleaning agents.
• the coatings are not soluble or dispersable in water or cleaning agents once they are dry, and in another aspect, the coatings withstand multiple cleanings without loss of performance.
• the present invention relates to a coated article comprising a partial or complete durable coating on the surface of an article, wherein the coating comprises a coating base and 0.1 to 5% by weight of a hydrophobic compound, based on the total solids weight of the coating, selected from a cyclic or acyclic alcohol which is substituted with at least one —R 1 , —C(O)R 1 , —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m R 2 , —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m C(O)R 1 , or mixtures thereof; where the cyclic or acyclic alcohol is selected from a pentaerythritol, saccharide, reduced sugar, aminosaccharide, citric acid, aldonic acid, or aldonic acid lactone; wherein each n is independently 0 to 20; each m is independently 0 to 20; m+n is greater than 0; each
• —(CH 2 CH 2 O)— represents oxyethylene groups (EO) and —(CH(CH 3 )CH 2 O)— represents oxypropylene groups (PO).
• EO oxyethylene groups
• PO oxypropylene groups
• These compounds can contain only EO groups, only PO groups, or mixtures thereof.
• PEG-PPG-PEG polyethylene glycol-polypropylene glycol-polyethylene glycol
• n+m is 1 to 20; in another embodiment, n+m is 1 to 15; and in a third embodiment, n+m is 1 to 12.
• coating base is a composition that is applied to a substrate for the purpose of creating a lasting film on the substrate surface.
• Such coating bases include compositions with polymer resins, such as architectural coatings, clear coats, and floor finishes.
• Architectural coatings may have a dry film thickness of greater than 3 mils.
• the final dry film thickness can be much greater, sometimes greater than 30 mils, for protection in industrial applications.
• the coating has a dry film thickness of at least 0.3 mils.
• the hydrophobic compound may be a multi-ester alcohol having at least two hydrophobic substitutions, which originates from a polyol or polycarboxylic acid compound.
• suitable polyols include but are not limited to cyclic or acyclic sugar alcohols, or pentaerythritols including dipentaerythritol.
• Suitable polycarboxylic acid compounds include citric acid.
• the cyclic or acyclic sugar alcohol is selected from a saccharide, reduced sugar, aminosaccharide, aldonic acid, or aldonic acid lactone. Mixtures of these compounds may also be used.
• the hydrophobic compounds are substituted with at least one —R 1 ; —C(O)R 1 ; —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m R 2 ; —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m C(O)R 1 ; or mixtures thereof.
• Such a substitution lends hydrophobic character to the monomer, and to the polymer molecules.
• the hydrophobic compound is substituted with at least two —R 1 ; —C(O)R 1 ; —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m R 2 ; —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m C(O)R 1 ; or mixtures thereof; and in another embodiment, it is substituted with at least three —R 1 ; —C(O)R 1 ; —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m R 2 ; —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m C(O)R 1 ; or mixtures thereof.
• These substituted compounds can be made by the reaction of a sugar alcohol with at least one fatty acid or alkoxylated fatty acid, such as by esterification of a fatty acid; or by esterification of a polycarboxylic acid with a long-chain alcohol.
• sugar alcohols include but are not limited to aldoses and ketoses such as those compounds derived from tetroses, pentoses, hexoses, and heptoses.
• Suitable fatty acids include, but are not limited to, caprylic acid, capric acid, lauric acid, mysteric acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, palmitoleic acid, lineolic acid, oleic acid, erucic acid, alkoxylated versions of these acids, and mixtures thereof.
• R 1 is a linear or branched alkyl group having 11 to 29 carbons, and in another embodiment, R 1 is a linear or branched alkyl group having 17 to 21 carbons.
• R 2 is a linear or branched alkyl group having 12 to 30 carbons, in another embodiment, R 2 is a linear or branched alkyl group having 18 to 30 carbons, and in another embodiment, R 2 is a linear or branched alkyl group having 18 to 22 carbons.
• the fatty acid substitution of the cyclic or acyclic sugar alcohols has a melting point of at least ⁇ 59° C. In another embodiment, the fatty acid substitution of the cyclic or acyclic sugar alcohols has a melting point of at least 0° C., and in a third embodiment, the fatty acid substitution of the cyclic or acyclic sugar alcohols has a melting point of at least 40° C.
• the hydrophobic compound is selected from Formulas (Ia), (Ib), or (Ic):
• each R is independently —H; —R 1 ; —C(O)R 1 ; —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m R 2 ; or —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m C(O)R 1 ; each n is independently 0 to 20; each m is independently 0 to 20; m+n is greater than 0; r is 1 to 3; a is 0 or 1; p is independently 0 to 2; provided that a is 0 when r is 3; each R 1 is independently a linear or branched alkyl group having 5 to 29 carbons optionally comprising at least 1 unsaturated bond; each R 2 is independently —H, or a linear or branched alkyl group having 6 to 30 carbons optionally comprising at least 1 unsaturated bond; provided when Formula (Ia) is chosen, then at least one R is —H and at least one R is a
• hydrophobic compound is Formula (Ia)
• any suitable substituted reduced sugar alcohol may be employed, including esters of 1,4-sorbitan, esters of 2,5-sorbitan, and esters of 3,6-sorbitan.
• the hydrophobic compound is selected from Formula (a) to be Formula (Ia′):
• R is further limited to —H; —R 1 ; or —C(O)R 1 and at least one R is —C(O)R 1 or R 1 .
• Compounds used to form residues of Formula (Ia′), having at least one of R is —H and at least one R is selected from —C(O)R 1 are commonly known as alkyl sorbitans. These sorbitans can be mono-substituted, di-substituted, or tri-substituted with —C(O)R 1 .
• sorbitans such as SPAN
• sorbitans contain a mixture of the various sorbitans ranging from where each R is H (un-substituted), and sorbitans where each R is —C(O)R 1 (fully substituted); wherein R 1 is a linear or branched alkyl group having 5 to 29 carbons; and mixtures of various substitutions thereof.
• the commercially available sorbitans may also include amounts of sorbitol, isosorbide, or other intermediates or byproducts.
• At least one R is —C(O)R 1 , and R 1 is a linear branched alkyl group having 5 to 29 carbons.
• R 1 is a linear or branched alkyl group having 7 to 21 carbons
• R 1 is a linear or branched alkyl group having 11 to 21 carbons.
• Preferred compounds used to form these residues include mono-, di-, and tri-substituted sorbitans derived from caprylic acid, capric acid, lauric acid, mysteric acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, and mixtures thereof.
• Particularly preferred compounds include mono-, di-, and tri-substituted sorbitan stearates or sorbitan behenins.
• R 1 is a linear or branched alkyl group having 5 to 29 carbons comprising at least 1 unsaturated bond.
• examples of compounds of Formula (Ia) wherein at least one R is selected from —C(O)R 1 ; and R 1 contains least 1 unsaturated bond include, but are not limited to, sorbitan trioleate (i.e., wherein R 1 is —C 7 H 14 CH ⁇ CHC 8 H 17 ).
• Other examples but are not limited to include mono-, di-, and tri-substituted sorbitans derived from palmitoleic acid, lineolic acid, arachidonic acid, and erucic acid.
• a compound of Formula (Ia) is employed, wherein at least one R is independently —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m R 2 or —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m C(O)R 1 .
• polysorbates contain a mixture of the various polysorbates ranging from where each R 2 is H (unsubstituted), and polysorbates where each R 1 is a linear or branched alkyl group having 5 to 29 carbons (fully substituted); and mixtures of various substitutions thereof.
• compounds of Formula (Ia) include polysorbates such as polysorbate tristearate and polysorbate monostearate.
• Reagents may include mixtures of compounds having various values for R, R 1 , and R 2 , and may also include mixtures of compounds where R 1 comprises at least one unsaturated bond with compounds where R 1 is fully saturated.
• alkyl citrates Compounds of Formula (Ib) are known as alkyl citrates. These citrates can be present as a mono-substituted, di-substituted, or tri-substituted with alkyl groups. It is known that commercially available citrates contain a mixture of the various citrates as well as citric acids from where R and each R 4 is —H, ranging to citrates where each R 4 is a linear or branched alkyl group having 6 to 30 carbons optionally comprising at least 1 unsaturated bond; and mixtures of various substitutions thereof.
• Mixtures of citrates having various values for R 1 , R 2 , and R 4 may be used, and may also include mixtures of compounds where R 1 comprises at least one unsaturated bond with compounds where R 1 is fully saturated.
• Alkyl citrates are also commercially available wherein m+n is greater than 0, R 4 is —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m R 2 ; or —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m C(O)R 1 and are present in the various substitutions from wherein R and each R 2 is H to wherein each R 1 and/or R 2 is a linear or branched alkyl group having 5 to 30 carbons optionally comprising at least 1 unsaturated bond.
• Examples of compounds of Formula (Ib) include, but are not limited to, trialkyl citrates.
• Pentaerythriol esters Compounds of Formula (Ic) are known as pentaerythriol esters. These pentaerythriol esters can be present as a mono-substituted, di-substituted, or tri-substituted with alkyl groups. Preferred compounds used to form X of Formula (Ic) are dipentaerythriol esters, where R 19 is —CH 2 C[CH 2 OR] 3 .
• pentaerythriol esters contain a mixture of the various pentaerythriol esters where R 19 and each R is —H, ranging to pentaerythriol esters where each R is —C(O)R 1 , and R 1 is a linear or branched alkyl group having 5 to 29 carbons optionally comprising at least 1 unsaturated bond; and mixtures of various substitutions thereof.
• the pentaerythriol esters also may contain compounds with mixtures of different chain lengths for R, or mixtures of compounds where R 1 comprises at least one unsaturated bond with compounds where R 1 is fully saturated.
• Compounds of Formulas (Ia), (Ib), and (Ic) can all be bio-based derived.
• bio-based derived it is meant that at least 10% of the material can be produced from non-crude oil sources, such as plants, other vegetation, and tallow.
• the hydrophobic compound is from about 10% to 100% bio-based derived. In one embodiment, hydrophobic compound is from about 35% to 100% bio-based derived. In another embodiment, hydrophobic compound is from about 50% to 100% bio-based derived. In one embodiment, hydrophobic compound is from about 75% to 100% bio-based derived. In one embodiment, hydrophobic compound is 100% bio-based derived.
• the average OH value of the hydrophobic compounds can range from just greater than 0 to about 230. In one embodiment, the average OH value is from about 10 to about 175, and in another embodiment, the average OH value is from about 25 to about 140.
• the coating on the article surface comprises 0.1 to 5% by weight of the hydrophobic compound, based on the total solids weight of the coating.
• the coating on the article surface comprises 0.2 to 5% by weight of the hydrophobic compound; and in a third aspect, 0.25 to 2% by weight of the hydrophobic compound based on the total solids weight of the coating.
• solids weight of the coating is used to mean the sum of the coating components that would remain once the aqueous, solvent, or other liquid components evaporated. In other words, it is the sum of the non-aqueous, non-solvent, and non-volatile components of the coating.
• the coating may further comprise aqueous or organic solvents, polymer resins, coating bases that contain polymer resins, pigments, functional additives, surfactants, and hydrophobic surface effect agents.
• the coating when the coating is in the form of a paint, stain, or sealer, the coating further comprises a coating base.
• the coating base is selected from the group consisting of an acrylic polymer, epoxy polymer, vinyl polymer, and polyurethane polymer in the form of an interior house paint, exterior house paint, stain, or clear coating.
• paints usually comprising a polymer resin, a liquid carrier, and functional additives, are readily available in the marketplace under a number of major brands.
• Such coatings may be unpigmented or may be pigmented with compounds including but not limited to titanium dioxide.
• the coating base is a floor finish, polishing agent, or floor polish.
• Floor waxes, polishes, or finishes are generally water-based or solvent-based polymer emulsions.
• Commercially available floor finish compositions typically are aqueous emulsion-based polymer compositions comprising one or more organic solvents, plasticizers, coating aides, anti-foaming agents, surfactants, polymer emulsions, metal complexing agents, and waxes.
• the particle size range and solids content of the polymer are usually controlled to control the product viscosity, film hardness and resistance to deterioration.
• Polymers containing polar groups function to enhance solubility and may also act as wetting or leveling agents providing good optical properties such a high gloss and distinctness of reflected image.
• the coating base is a clearcoat.
• Such clearcoat compositions which can be used to coat metal substrates, contain a polymer composition such as an epoxy polymer resin composition.
• a polymer composition such as an epoxy polymer resin composition.
• epoxy resin composition is described in US2015/0344748.
• Such compositions may be fluorinated or nonfluorinated, and may contain one or more curing agents, fillers, lubricants, anti-dripping agents, flame retardant agents, mold release agents, nucleating agents, colorants, UV stabilizers, solvents, or catalysts.
• Preferred polymers for use in floor finishes include acrylic polymers, polymers derived from cyclic ethers, and polymers derived from vinyl substituted aromatics. Polyesters, polyamides, polyurethanes and polysiloxanes are also used in floor finishes.
• the waxes or mixtures of waxes that are used in floor finishes include waxes of a vegetable, animal, synthetic, and/or mineral origin. Representative waxes include, for example, carnuba, candelilla, lanolin, stearin, beeswax, oxidized polyethylene wax, polyethylene emulsions, polypropylene, copolymers of ethylene and acrylic esters, hydrogenerated coconut oil or soybean oil, and the mineral waxes such as paraffin or ceresin.
• the waxes typically range from 0 to about 15 weight percent and preferably from about 2 to about 10 weight percent based on the weight of the finish composition.
• the hydrophobic compounds of the present invention are effectively introduced to the coating composition by thoroughly stirring it in at room or ambient temperature. More elaborate mixing can be employed such as using a mechanical shaker or providing heat or other methods.
• the hydrophobic compound is combined with a surface effect agent to extend or improve the performance of the surface effect agent.
• the hydrophobic surface effect agents may be used from about 5:95 to 95:5 in one aspect; from about 10:90 to 90:10 in a second aspect; and from about 20:80 to 80:20 in a third aspect, based on the total solids weight of the coating.
• Hydrophobic surface effect agents provide surface effects such as moisture control, strength, anti-slip, anti-static, anti-snag, anti-pill, stain repellency, stain release, soil repellency, soil release, water repellency, oil repellency, odor control, antimicrobial, sun protection, anti-blocking, cleanability, dust resistance, leveling, corrosion resistance, acid resistance, anti-fog, or anti-ice, and similar effects.
• Such materials can be in the form of hydrophobic non-fluorinated cationic acrylic polymers, hydrophobic non-fluorinated anionic acrylic polymers, hydrophobic non-fluorinated nonionic acrylic polymers, partially fluorinated urethanes, hydrophobic non-fluorinated urethanes, cationic partially fluorinated acrylic polymers or copolymers, nonionic partially fluorinated acrylic polymers or copolymers, partially fluorinated acrylamide polymers or copolymers, fluorinated phosphates, fluorinated ethoxylates, fluorinated or non-fluorinated organosilanes, silicones, waxes, including parafins, and mixtures thereof.
• stain release and soil release agents are hydrophilic and include compounds such as polymethyl acrylates or hydrophilic urethanes. These compounds may also be used as surface effect agents and combined with the hydrophobic compounds, from about 5:95 to 95:5 in one aspect; from about 10:90 to 90:10 in a second aspect; and from about 20:80 to 80:20 in a third aspect, based on the total solids weight of the coating.
• fluorinated polymers useful as hydrophobic surface effect agents to provide repellency properties to the surface of treated substrates.
• fluorochemical compounds or polymers containing one or more fluoroaliphatic groups designated here as R f groups
• R f groups fluoroaliphatic groups
• the R f groups contain at least 3 carbon atoms, preferably 3 to 20 carbon atoms, more preferably 4 to 12 carbon atoms, and most preferably about 4 to about 6 carbon atoms.
• the R f groups may contain straight or branched chain or cyclic fluorinated alkylene groups or combinations thereof.
• the terminal portion of the R f groups is preferably a perfluorinated aliphatic group of the formula C n F 2n+1 wherein n is from about 3 to about 20.
• fluorinated polymer treating agents are CAPSTONE and ZONYL available from The Chemours Company, Wilmington, Del.; ASAHI GARD from Asahi Glass Company, Ltd., Tokyo, Japan; UNIDYNE from Daikin America, Inc., Orangeburg, N.Y.; SCOTCHGARD from 3M Company, St. Paul, Minn.; and NANO TEX from Nanotex, Emeryville, Calif.
• fluorinated polymers examples include R f -containing polyurethanes and poly(meth)acrylates.
• copolymers of fluorochemical (meth)acrylate monomers with a co-polymerizable monovinyl compound or a conjugated diene include alkyl (meth)acrylates, vinyl esters of aliphatic acids, styrene and alkyl styrene, vinyl halides, vinylidene halides, alkyl esters, vinyl alkyl ketones, and acrylamides.
• the conjugated dienes are preferably 1,3-butadienes.
• Representative compounds within the preceding classes include the methyl, propyl, butyl, 2-hydroxypropyl, 2-hydroxyethyl, isoamyl, 2-ethylhexyl, octyl, decyl, lauryl, cetyl, and octadecyl acrylates and methacrylates; vinyl acetate, vinyl propionate, vinyl caprylate, vinyl laurate, vinyl stearate, styrene, alpha methyl styrene, p-methylstyene, vinyl fluoride, vinyl chloride, vinyl bromide, vinylidene fluoride, vinylidene chloride, allyl heptanoate, allyl acetate, allyl caprylate, allyl caproate, vinyl methyl ketone, vinyl ethyl ketone, 1,3-butadiene, 2-chloro-1,3-butadiene, 2,3-dichloro-1,3-butad
• Hydrophobic non-fluorinated acrylic polymers include copolymers of monovinyl compounds, including alkyl (meth)acrylates, vinyl esters of aliphatic acids, styrene and alkyl styrene, vinyl halides, vinylidene halides, alkyl esters, vinyl alkyl ketones, and acrylamides.
• the conjugated dienes are preferably 1,3-butadienes.
• Representative compounds within the preceding classes include the methyl, propyl, butyl, 2-hydroxypropyl, 2-hydroxyethyl, isoamyl, 2-ethylhexyl, octyl, decyl, lauryl, cetyl, and octadecyl acrylates and methacrylates; vinyl acetate, vinyl propionate, vinyl caprylate, vinyl laurate, vinyl stearate, styrene, alpha methyl styrene, p-methylstyene, vinyl fluoride, vinyl chloride, vinyl bromide, vinylidene fluoride, vinylidene chloride, allyl heptanoate, allyl acetate, allyl caprylate, allyl caproate, vinyl methyl ketone, vinyl ethyl ketone, 1,3-butadiene, 2-chloro-1,3-butadiene, 2,3-dichloro-1,3-butad
• Hydrophobic non-fluorinated urethanes include, for example, urethanes synthesized by reacting an isocyanate compound with the hydrophobic compounds described above as an alcohol reagent. These compounds are described in US2014/0295724 and US2016/0090508.
• Hydrophobic non-fluorinated nonionic acrylic polymers include, for example, polymers made by polymerizing or copolymerizing an acrylic ester of the hydrophobic compounds described above. Such compounds are described in US2016/0090686.
• the coating composition of the present invention optionally further comprises additional components such as additional treating agents or finishes to achieve additional surface effects, or additives commonly used with such agents or finishes.
• additional treating agents or finishes can be combined with the blended composition and applied to the article.
• Other additives commonly used with such treating agents or finishes may also be present such as surfactants, pH adjusters, cross linkers, wetting agents, and other additives known by those skilled in the art.
• other extender compositions are optionally included to obtain a combination of benefits.
• the present invention further comprises a method of imparting a surface effect to an article comprising contacting a the surface of the article with a durable coating to form a partially or completely coated article, wherein the coating comprises a coating base and 0.1 to 5% by weight of a hydrophobic compound, based on the total solids weight of the coating, selected from a cyclic or acyclic alcohol which is substituted with at least one —R 1 , —C(O)R 1 , —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m R 2 , —(CH 2 CH 2 O) n (CH(CH 3 )CH 2 O) m C(O)R 1 , or mixtures thereof; where the cyclic or acyclic alcohol is selected from a pentaerythritol, saccharide, reduced sugar, aminosaccharide, citric acid, aldonic acid, or aldonic acid lactone; wherein each n is independently 0 to 20; each m
• the articles may include but are not limited to a unglazed concrete, brick, tile, metal, granite, limestone, marble, grout, mortar, statuary, monument, wood, composite material, terrazzo, gypsum board, wall or ceiling panel, glass, or a combination thereof, or a combination thereof.
• the contacting step may occur by applying the hydrophobic compound by liquid carrier with the coating base.
• the hydrophobic compound When applied by liquid carrier, the hydrophobic compound may be in the form of an aqueous solution, aqueous dispersion, organic solvent solution or dispersion, or cosolvent solution or dispersion.
• the contacting step may occur by any conventional method, including but not limited to spraying, rolling, dip-squeeze, brushing, sprinkling, dripping, powder coating, tumbling, or screen printing.
• the method further comprises the step of heating the partially or completely coated article.
• the hydrophobic agent may be applied, and the treated article may be heated to melt, flow, dry, or otherwise fix the hydrophobic agent onto the article surface.
• the final coating on the article surface will be a solidified, lasting, permanent coating.
• the method further comprises the step of solidifying the coating by drying, cooling, or allowing to cool.
• the liquid carrier may be dried by heating or air drying to allow for evaporation of the liquid carrier, thus leaving a permanent solid coating.
• the treated articles of the present invention are useful to provide enhanced surface properties, especially durability of oil-, water- and soil-repellency, while reducing or eliminating the amount of fluorinated compounds employed.
• the repellency property is effective with a variety of other surface effects.
• MIBK Methyl isobutyl ketone
• Sorbitan tristearate and sorbitan trioleate are commercially available from Croda, East Yorkshire, England, or DuPont Nutrition & Health, Copenhagen, Denmark.
• Behenyl 50 and lauryl sorbitan are available from DuPont Nutrition & Health, Copenhagen, Denmark.
• CHEMIDEX S is a stearaminopropyl dimethylamine surfactant available from Lubrizol, Wickliffe, Ohio.
• ETHAL LA-4 is an ethoxylated emulsifier available from Ethox Chemicals, Greenville, South Carolina.
• CAPSTONE FS-81, FS-87, and 1470 are fluorinated cleanability agents or surfactants available from The Chemours Company, Wilmington, Del.
• Witco C-6094 and WAQE are available from AkzoNobel, Amsterdam, Netherlands.
• Hydrophobic compounds of the present invention are added to selected commercially available interior and exterior latex paints that are, prior to dosing, free of fluoroadditives.
• the sample is mixed using an overhead Cowles Blade stirrer at 600 rpm for 10 minutes.
• the mixture is then transferred to a glass bottle, sealed and placed on a roll mill overnight to allow uniform mixing of the fluoropolymer.
• the samples are then drawn down uniformly on a black Leneta Mylar® card (5.5′′ ⁇ 10′′) or Aluminium Q-panel (4′′ ⁇ 12′′) via a BYK-Gardner drawdown apparatus using 5 mL bird-applicator, to yield a wet paint film with a film thickness of 5 mils.
• the paint films are then allowed to dry at room temperature for 7 days to yield dry paint films with a film thickness of about 2.5 mils.
• Water and oil contact angle measurements are used to test for the migration of fluoroadditive to the surface of the paint film. Testing is performed by goniometer on 1 inch strips of Leneta panel coated with dried paint film. A Ramé-Hart Standard Automated Goniometer Model 200 employing DROPimage standard software and equipped with an automated dispensing system, 250 ⁇ l syringe, and illuminated specimen stage assembly is used. The goniometer camera is connected through an interface to a computer, allowing the droplet to be visualized on a computer screen. The horizontal axis line and the cross line can both be independently adjusted on the computer screen using the software.
• the sample Prior to contact angle measurement, the sample is placed on the sample stage and the vertical vernier is adjusted to align the horizontal line (axis) of the eye piece coincident to the horizontal plane of the sample.
• the horizontal position of the stage relative to the eye piece is positioned so as to view one side of the test fluid droplet interface region at the sample interface.
• test fluid approximately one drop of test fluid is dispensed onto the sample using a 30 ⁇ L pipette tip and an automated dispensing system to displace a calibrated amount of the test fluid.
• hexadecane is suitably employed, and deionized water is used for water contact angle measurements.
• Horizontal and cross lines are adjusted via the software in case of the Model 200 after leveling the sample via stage adjustment, and the computer calculates the contact angle based upon modeling the drop appearance.
• the initial contact angle is the angle determined immediately after dispensing the test fluid to the sample surface. Initial contact angles above 30 degrees are indicators of effective oil repellency.
• a modified version of ASTMD3450 is used to determine the oil stain cleanability of painted panels.
• the test material dosed in interior flat paint is applied to a black Leneta card as described in the application method.
• the dried samples are cut into a 4′′ ⁇ 3′′ size for testing.
• a thin, evenly laid layer of Leneta staining medium (5 wt. % dispersion of Leneta carbon black in Vaseline®) is placed on half of the film, and left for 1 hour. The excess stain is gently scrapped off and wiped with a clean paper towel until no visible stain can be wiped off.
• the panel is then moved to an Gardco abrasion tester covered with 8 layers of cheese cloth at the washing block.
• Paint was tested without any hydrophobic additive, according to the test methods above.
• a 100-g paint sample was blended with 0.59 g of CAPSTONE FS-81 according to the dosing procedure above and tested according to the test methods above.
• a 100-g paint sample was blended with 0.1 g of CAPSTONE FS-87 according to the dosing procedure above and tested according to the test methods above.
• a 100-g paint sample was blended with 0.13 g of CAPSTONE 1470 according to the dosing procedure above and tested according to the test methods above.
• sorbitan tristearate 111 g
• MIBK 4-methyl-2-pentanone
• An aqueous dispersion is then prepared by adding warm water (512 g), CHEMIDEX S (2.4 g), ETHAL LA-4 (3.2 g) and acetic acid (1.6 g) at 65° C.
• the mixture is immersion blended (2 min), homogenized at 6000 psi, and the resulting dispersion is distilled under reduced pressure to remove the solvent and yield a non-flammable dispersion at 13.15% solids after cooling and filtering.
• the product is dosed into paint such that the sorbitan tristearate composes 1% by weight of the sample and tested according to the test methods above.
• Example 1 is repeated, except 0.59 g of CAPSTONE FS-81 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.
• sorbitan tristearate 80 g
• MIBK 200 g
• An aqueous dispersion is then prepared by adding warm water (225 g), CHEMIDEX S (1.7 g), ETHAL LA-4 (2.3 g), acetic acid (1.2 g), and dipropylene glycol (19.7 g) at 65° C.
• the mixture is immersion blended (2 min), homogenized at 6000 psi, and the resulting dispersion is distilled under reduced pressure to remove the solvent and yield a non-flammable dispersion at 10.73% solids after cooling and filtering.
• the product is dosed into paint such that the sorbitan tristearate composes 1% by weight of the sample and tested according to the test methods above.
• Example 2 is repeated, except 0.59 g of CAPSTONE FS-81 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.
• Example 1 is repeated, except 0.1 g of CAPSTONE FS-87 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.
• Example 1 is repeated, except 0.13 g of CAPSTONE 1470 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.
• sorbitan tristearate (60.1 g) and MIBK (150 g). After the solution was heated to 55° C. An aqueous dispersion was then prepared by adding warm water (299 g), Witco C-6094 (7.6 g) and dipropylene glycol (14.8 g) at 65° C. The mixture was immersion blended (2 min), homogenized at 6000 psi, and the resulting dispersion was distilled under reduced pressure to remove the solvent and yield a non-flammable urethane dispersion at 12.56% solids after cooling and filtering. The product is dosed into paint such that the sorbitan tristearate composes 1% by weight of the sample and tested according to the test methods above.
• Example 7 is repeated, except 0.59 g of CAPSTONE FS-81 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.
• Example 7 is repeated, except 0.1 g of CAPSTONE FS-87 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.
• Example 7 is repeated, except 0.13 g of CAPSTONE 1470 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.
• a 100-g paint sample was dosed with CAPSTONE FS-81 to form a composition at 0.2% by weight of CAPSTONE FS-81.
• the dosed paint was tested according to the test methods above.
• Example 1 is repeated, using the percentage of sorbitan tristearate shown in Table 2.
• Examples 12 and 14 also contain 0.59 g of CAPSTONE FS-81 added to the 100-g paint sample. The resulting paints are tested according to the test methods above.
• Example 7 is repeated, using the percentage of sorbitan tristearate shown in Table 2.
• Example 16 and 18 also contain 0.59 g of CAPSTONE FS-81 added to the 100-g paint sample. The resulting paints are tested according to the test methods above.
• sorbitan tristearate (60.1 g) and MIBK (150 g). The solution was heated to 55° C. An aqueous dispersion was then prepared by adding warm water (383 g), WAQE (11.4 g) and dipropylene glycol (14.8 g) at 65° C. The mixture was immersion blended, homogenized at 6000 psi, and the resulting dispersion was distilled under reduced pressure to remove the solvent and yield a non-flammable urethane dispersion at 12.91% solids after cooling and filtering. The product is dosed into paint such that the sorbitan tristearate composes 1 by weight of the sample and tested according to the test methods above.
• Example 19 is repeated, except 0.59 g of CAPSTONE FS-81 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.
• a 4-neck 500 mL round bottom flask was set-up with an additional funnel, thermocouple, mechanical stirrer, nitrogen inlet, condenser, and gas outlet.
• the flask was charged with Behenyl 50 (30 g) and MIBK (75 g).
• the mixture was heated to 75° C. and Behenyl 50 dissolved.
• hot DI water (280.5 g), WAQE (5.69 g) and dipropylene glycol (7.33 g) were mixed and added to the flask with Behenyl 50.
• the mixture was stirred for 30 minutes at 75° C. and then homogenized at 6000 psi.
• the final product was distilled to remove MIBK and filtered through a sock filter to yield a product at 13% solids.
• the product is dosed into paint such that the Behenyl 50 composes 1% by weight of the sample and tested according to the test methods above.
• Example 21 is repeated, except 0.59 g of CAPSTONE FS-81 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.
• a 4-neck round bottom flask was set-up with an additional funnel, thermocouple, mechanical stirrer, nitrogen inlet, condenser, and gas outlet.
• the flask was charged with lauryl sorbitan (30 g) and MIBK (75 g).
• the mixture was heated to 75° C.
• hot DI water (280.5 g), WAQE (5.69 g) and dipropylene glycol (7.33 g) were mixed and added to the flask with lauryl sorbitan.
• the mixture was stirred for 30 minutes at 75° C. and then homogenized at 6000 psi.
• the final product was distilled to remove MIBK and filtered through a sock filter to yield a product at 20% solids.
• the product is dosed into paint such that the lauryl sorbitan composes 1% by weight of the sample and tested according to the test methods above.
• Example 23 is repeated, except 0.59 g of CAPSTONE FS-81 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.
• sorbitan trioleate (60.3 g) and MIBK (150 g). The solution was heated to 55° C. An aqueous dispersion was then prepared by adding warm water (429 g), WAQE (11.4 g) and dipropylene glycol (14.8 g) at 65° C. The mixture was immersion blended (2 min), homogenized at 6000 psi, and the resulting dispersion was distilled under reduced pressure to remove the solvent and yield a non-flammable urethane dispersion at 14.44% solids after cooling and filtering. The product is dosed into paint such that the sorbitan trioleate composes 1% by weight of the sample and tested according to the test methods above.
• Example 25 is repeated, except 0.59 g of CAPSTONE FS-81 is added to the 100-g paint sample and mixed according to the dosing procedure above. The resulting paint is tested according to the test methods above.

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• 2016
  • 2016-09-30 WO PCT/US2016/054591 patent/WO2017059161A1/en active Application Filing
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