EP3161074A1 - Article culinaire muni d'un revêtement antiadhésif comprenant une surface mobile a chaud - Google Patents
Article culinaire muni d'un revêtement antiadhésif comprenant une surface mobile a chaudInfo
- Publication number
- EP3161074A1 EP3161074A1 EP15753961.0A EP15753961A EP3161074A1 EP 3161074 A1 EP3161074 A1 EP 3161074A1 EP 15753961 A EP15753961 A EP 15753961A EP 3161074 A1 EP3161074 A1 EP 3161074A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- infusible
- softening temperature
- polymer
- infusible material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
- A47J36/025—Vessels with non-stick features, e.g. coatings
-
- 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
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
-
- 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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
- C09D133/12—Homopolymers or copolymers of methyl methacrylate
-
- 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
-
- 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
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
Definitions
- the invention generally relates to the field of coatings, and more particularly the non-stick coatings for cookware.
- SLIPS Lippery Liquid-Infused Porous Surfaces
- This type of surface comprises a basic microstructure whose cells are filled with a liquid, usually an oil, chosen to be insoluble with respect to a liquid to be repelled.
- a liquid usually an oil
- the resultant leads to a material that is known as the most "slippery" material currently known.
- the anti-sticking is not managed by the contact angles, but by the possibility of one phase to slip on another when they can not mix.
- the first applications of the SLIPS technology came into being for the production of packaging for Ketchup® sauce, allowing the contents of the packaging to be emptied to the last drop or the production of high-performance heat exchangers.
- patent document WO 2014/12080 the Aizenberg team has developed an article comprising a sliding surface comprising a supramolecular polymer and a lubricating liquid having an affinity with the polymer such that the liquid is absorbed within the polymer, so to form a slippery surface.
- this document teaches a self-cleaning coating to prevent the adhesion of proteins, sugar and lipids, or more generally food.
- the surface of this coating is omniphobic, hydrophobic and / or lipophobic / hydrophilic.
- this document does not disclose a non-stick coating that can be subjected, by resisting, to repeated heating cycles whose temperature is between 140 and 250 ° C.
- the SLIPS technology as currently known could be useful in culinary applications by imparting a great non-stickiness to the coatings, but it is ultimately of little practical interest because the temperature requirements required (140 to 250 ° C continuous in use) are far beyond what has been studied so far by Harvard University teams. Indeed, it is difficult to obtain an oil or a lubricant that is both stable enough to withstand repeated heating cycles and that is otherwise food.
- the applications envisaged hitherto do not reflect the diversity of conditions encountered during cooking.
- the cleaning aspects are not mentioned and even if the fouling is very low, for reasons of hygiene and organoleptic neutrality, a cleaning of the culinary article is necessary between each heating cycle. However, this cleaning would likely gradually empty the cells and thus weaken the non-stick nature of the material. Even if a progressive recharging of the coating "lubricating oil" was requested from the user, this operation would be difficult to achieve both by the choice of lubricants than by the method of reloading, which can be traumatic for the user.
- the applicant has therefore developed a non-stick coating that overcomes the disadvantages of the prior art, in which the SLIPS technology is modified to provide a mobile phase only at high temperature (typically above 80 ° C).
- the subject of the present invention is a non-stick coating characterized in that it comprises at least one outer layer comprising at least one infusible domain and at least one fusible domain, the infusible domain comprising at least one infusible material having a temperature of softening above 200 ° C, and the fuse range comprising at least one fusible material having a softening temperature greater than ambient temperature and at least 20 ° C lower than the softening temperature of the infusible material.
- Playing on the thermal transition of a part of the outer layer of the non-stick coating allows to obtain a mobile phase (liquid film) only when it is needed, that is to say when the conditions become truly stressful for the nonstick coating. This keeps a solid surface cold. The presence of this solid cold domain also limits the risk of losses during handling, during washing including in the dishwasher and does not require recharging operation by the user.
- the term "softening temperature” are used with reference to the melting temperature (transition 1 order) of a crystalline material or having at least one crystal phase and with reference to the transition temperature glass (transition from the 2nd order) of a material having no crystals or crystalline phases.
- melting temperature are used with reference to the temperature of deflection under load or TFC (HDT is the corresponding acronym used to denote “heat deflection temperature”) of said compound.
- very slightly soluble in water are used with reference to a compound whose solubility in water is less than 0.01 g / L at ambient temperature.
- the fusible material is present on at least 30% of the outer surface of the outer layer, at a coating use temperature between the softening temperature of the fusible material and the softening temperature of the infusible material.
- the fusible material may be bonded to the infusible material by at least one of a mechanical anchor, a covalent bond, an ionic bond and a Van der Waals bond.
- the fusible material may have a softening temperature greater than 65 ° C., and preferably greater than 80 ° C.
- the fusible material may have a softening temperature at least 50 ° C lower than the softening temperature of the infusible material.
- the infusible material may in this case have a glass transition temperature greater than 200 ° C and the fusible material may have a glass transition temperature greater than room temperature and less than 50 ° C at the glass transition temperature of the infusible material.
- the infusible material may in this case have a melting temperature greater than 200 ° C. and the fusible material has a glass transition temperature greater than ambient temperature and at least 50 ° C. lower than the ambient temperature. melting temperature of the infusible material.
- the outer layer may have a thickness of between 200 nm and 50 ⁇ m.
- the infusible material may comprise at least one polymer or polymer segment having a softening temperature greater than 200 ° C.
- the polymer or polymer segment may advantageously be chosen from the group consisting of fluorinated polymers and copolymers, polyamide-imides (PAI), polyimides (PI), phenolic polymers, polyether-polyphenols and polyamide-imides.
- PAI polyamide-imides
- PI polyimides
- phenolic polymers polyether-polyphenols and polyamide-imides.
- PEEK polyether ketone ketones
- PES polyether sulphones
- PPS phenylene polysulfides
- the polymer or segment may be a fluorinated polymer or polymer segment selected from the group consisting of polytetrafluoroethylene (PTFE), perfluoroalkoxy (PFA), perfluoroethylenepropylene (FEP), poly (ethylene-co-tetrafluoroethylene) (ETFE), polychlorotrifluoroethylene (PCTFE) and chlorotrifluoroethylene ethylene (ECTFE), as well as mixtures thereof.
- PTFE polytetrafluoroethylene
- PFA perfluoroalkoxy
- FEP perfluoroethylenepropylene
- ETFE poly (ethylene-co-tetrafluoroethylene)
- PCTFE polychlorotrifluoroethylene
- ECTFE chlorotrifluoroethylene ethylene
- a class of polymers of particular interest is that of polymers having a mixed structure associating a chain having a high melting point to one or more chains having a melting point in the range under consideration (ie between 80 ° C. and 250 ° C). These polymers generally have a comb structure (usually referred to as "comb-like polymers").
- non-fusible chain that is to say with a melting or softening point greater than 200 ° C.
- the "fusible” chain may be of the perfluorinated type or of the PEEK type
- the "fusible” chain may be of alkyl type (as in waxes), acrylic, or methacrylic, or PVDF or perfluorinated provided that its melting point or softening point is above 80 ° C and below 200 ° C.
- the surface material is macroscopically homogeneous, in particular when cold and reveals its heterogeneity only when hot.
- Another advantage is that the mobile phase (the fuse portion) remains fixed to the main chain which significantly reduces the risk of loss by evaporation, or during handling and washing.
- a preferred material has a PTFE-based infusible main chain and poly-HFPO side chains.
- the average molar mass of the main chain is between 50 000 g / mol and 10 8 g / mol and the average molar mass of the side chain (s) is between 200 and 50 000 g / mol.
- Lateral chains of lower average molar mass do not generate enough mobile phase; side chains of average molar mass too high lead to too viscous products for which the liquid lubricating effect is insufficient.
- the infusible material may comprise at least one metal having a softening temperature greater than 200 ° C.
- the metal may advantageously be selected from the group consisting of iron, aluminum, copper, tungsten, tin and titanium, as well as metal salts and alloys thereof.
- the infusible material may comprise at least one metal salt chosen from the group consisting of nitride or aluminum carbide, copper nitride, tungsten carbide and nitride or titanium carbide. .
- the infusible material may comprise at least one of a stainless steel and an aluminum alloy.
- the infusible material may comprise at least one of a ceramic, an enamel or a glass, having a softening temperature greater than 200 ° C.
- the ceramic, enamel or glass may be free of heavy metals, and preferably at least one of lead, cadmium and vanadium.
- the infusible material may comprise at least one ceramic comprising at least one of silica, alumina, titanium dioxide and zirconia.
- the infusible material may comprise at least one sol-gel-obtained ceramic, which may preferably be obtained from at least one metal polyalkoxylate.
- the metal polyalkoxylate can be a metal polyalkoxylate based on silicon or aluminum based.
- the infusible material may comprise inorganic particles and / or organic particles and / or hybrid particles, having a softening temperature greater than 200 ° C.
- the infusible material may comprise inorganic particles comprising at least one metal and one oxide.
- the inorganic particles may comprise at least one of gold and silver.
- the inorganic particles may be chosen from the group consisting of silica, alumina, titanium dioxide and zirconia, and mixtures thereof.
- the infusible material may comprise organic particles comprising at least one thermoset polymer, and preferably at least one polyurethane and a phenolic resin.
- the infusible material may comprise hybrid particles comprising at least one silsesquioxane, and preferably at least polyhedral oligomeric silsesquioxane (POSS).
- PES polyhedral oligomeric silsesquioxane
- the fuse material may in a first advantageous variant be dispersed in the infusible material.
- the infusible material may be dispersed in the fusible material.
- the infusible domain may be in the form of a structured film, the structuring of the infusible domain having a relief comprising protuberances and cavities.
- the average pitch Ar of the relief of the structure of the infusible domain is advantageously less than 30 ⁇ m.
- the average roughness depth Ra of the structure of the infusible domain is less than 20 ⁇ m.
- the fusible material may be disposed in at least a portion of the cavities of the relief of the structure of the infusible domain.
- the structured film can be made from various materials such as metals, glass, ceramics, crosslinked sol-gel material, enamels, terra cotta, or other polymer such as PEEK or PTFE.
- the nanostructure of the film can be achieved by various techniques known as selective material degradation, chemical etching or energetic etching, nanolithography, electrolytic deposition, self-organization and phase separation mechanisms. .
- the structured surface will have to be mechanically heat resistant.
- the fusible material may comprise at least one organic salt or ester or an organometallic salt or ester, having a softening temperature greater than room temperature and at least 20 ° C at the softening temperature of the infusible material.
- the salt or ester may be insoluble or very slightly soluble in water.
- the salt or ester may be chosen from fatty acid type monoacid salts or esters and salts or esters of organic polyacids.
- the salt or the fatty acid monoacid ester may be chosen:
- the fusible material comprises at least one salt or organic ester or salt or organometallic ester, having a softening temperature greater than room temperature and at least 20 ° C lower than the softening temperature of the infusible material
- the fusible material may advantageously comprise at least one polymer or polymer segment, having a softening temperature higher than the ambient temperature and at least 20 ° C lower than the softening temperature of the infusible material .
- the polymer or polymer segment has a molecular mass greater than 500 Da, and preferably between 1000 and 50000 Da.
- the polymer or polymer segment may be chosen from the group consisting of alkyl chains having 12 or more carbon atoms, fluorinated or perfluorinated waxes, polyolefin waxes, silicone waxes, acrylic polymers or copolymers, methacrylic polymers or copolymers, polyethers or the like, and fluoropolymers or copolymers, and mixtures thereof.
- the polymer or polymer segment may be selected from the group consisting of polyethylene waxes, poly (hexafluoropropene oxide) (poly-HFPO), copolymers of tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride (THV), perfluoroalkoxy (PFA), perfluoroethylenepropylene (FEP), polyvinylidene fluoride (PVDF), polyvinylfluoride (PVF), and poly (ethylene-co-tetrafluoroethylene) (ETFE), as well as mixtures thereof.
- polyethylene waxes poly (hexafluoropropene oxide) (poly-HFPO)
- poly-HFPO poly (hexafluoropropene oxide)
- TSV vinylidene fluoride
- PFA perfluoroalkoxy
- FEP perfluoroethylenepropylene
- PVDF polyvinylidene fluoride
- PVF polyvinylflu
- the fusible material may comprise at least one polymer segment and the infusible material comprises at least one different polymer segment, the polymer segments forming between them a block copolymer.
- the fusible material comprises at least one polyether segment and the infusible material comprises at least one polyamide segment.
- the fusible material may comprise at least one polymer segment and is grafted onto the infusible material.
- At least one end of the polymer segment is grafted onto the infusible material, and preferably at least two ends of the polymer segment are grafted onto the infusible material.
- the fusible material comprises at least one polymer segment and is grafted onto inorganic particles and / or organic particles and / or hybrid particles, and the infusible material further comprises at least one polymer or polymer segment or a sol gel, having a softening temperature above 200 ° C, wherein the graft particles are dispersed.
- the present invention also relates to an article characterized in that it comprises a support having two opposite faces, at least one of which is covered with a non-stick coating according to any one of the preceding claims.
- the support may be a material selected from metals, glass, ceramics and plastics, and preferably an anodized or non-anodized aluminum support, a polished, brushed, microblasted, sandblasted or chemically treated aluminum support, a polished, brushed or micro-blasted stainless steel stand, cast iron stand, or hammered or polished brass stand.
- the support may constitute a culinary article in which the support has a concave inner face intended to be placed on the food side. may be introduced into said article, and a convex outer face to be disposed towards a heat source.
- the present invention also relates to a method for producing a coating as defined above, characterized in that it comprises the following steps:
- the present invention also relates to a method for producing a coating as defined above, characterized in that it comprises the production of the outer layer according to the following steps:
- step d) can be done, for example, by dipping coating (or "dip-coating” in English) or by impregnation by capillarity.
- the present invention also relates to a method for producing a coating as defined above, characterized in that it comprises the following steps:
- step c) making the outer layer hot from the mixture of step b).
- the present invention also relates to a method for producing a coating as defined above, characterized in that it comprises the following steps:
- step a) preparing a suspension, a dispersion, a solution or a powder of the polymer or modified polymer segment of step a);
- step c) making the outer layer hot from the product of step b).
- the present invention also relates to a method for producing a coating as defined above, characterized in that it comprises the following steps:
- step b) preparing a sol-gel, having a softening temperature above 200 ° C, from the modified silane of step a);
- the grafting may advantageously be a "graft from" grafting or graft onto grafting.
- the present invention also relates to a method for producing a coating as defined above, characterized in that it comprises the following steps:
- step a) preparing a suspension, a dispersion, a solution or a powder of the copolymer of step a);
- step c) making the outer layer hot from the product of step b).
- the production of the outer layer can be carried out on at least one undercoating layer.
- the present invention also relates to a method for producing a coating as defined above, characterized in that it comprises the following steps:
- step b) can be done, for example, by dipping coating (or "dip-coating” in English) or by impregnation by capillarity.
- the present invention also relates to a method of manufacturing an article as defined above, comprising the application on at least one of the two opposite faces of the support of the coating prepared by a method as defined above.
- the present invention also relates to a method of manufacturing an article as defined above, comprising the following steps: a) hot application of a film of the infusible material on at least one of the two opposite faces of the support, wherein the face of the support is structured; and
- step b) can be done, for example, by dipping coating (or "dip-coating” in English) or by impregnation by capillarity.
- the support whose surface is to be tested is positioned on an inclined plane equipped with a heating mat.
- the support is brought to a temperature of 170 ° C.
- a drop of olive oil is deposited on this surface and the angle of inclination is gradually increased until the drop of oil is detached from the surface.
- This measurement is also performed after aging of the surface at 170 ° C for one hour, and after 30 minutes of washing in a dishwasher.
- EXAMPLE 1 Support in stainless steel structured with laser + SAM (self-assembled monolayer - "self assembly, monolayer”) fluorinated + coating based on pure fluorinated wax
- a previously degreased stainless steel support is structured by laser etching.
- the laser used is a femtosecond laser of power 5W; the engraved patterns, of the stud type, have a height of 20 ⁇ m, a width of 20 ⁇ m and are spaced apart by 20 ⁇ m.
- the thus structured laser support is treated in the vapor phase with 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane, to be silanized.
- the structured and silanized support is impregnated by slow dipping (or dip-coating) in a pure fluorinated wax (Dyneon THV 500GZ) brought to the liquid state at 170 ° C.
- the tilt angle needed to pick up a drop of olive oil placed on the surface raised to 170 ° C is less than 2 °, which shows that the force of the tilt angle adhesion of the liquid to the hot moving surface is particularly low: the surface has good non-stick properties at high temperatures.
- EXAMPLE 2 Engraved Glass Support + SAM (Self-Assembled Monolayer - "self assembly") + Fluorinated coating obtained from fluorinated wax in solution
- a borosilicate-type glass support is structured by optical lithography (coating by dipping in a resin, specific masking during the insolation of the resin, opening of the patterns), followed by etching oxygen plasma.
- the etched patterns, of the stud type have a height of 20 ⁇ m, a width of 20 ⁇ m and are spaced apart by 20 ⁇ m.
- the etched glass is activated by plasma air and treated in the vapor phase with 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane, to be silanized.
- a fluorinated wax (Dyneon THV 500GZ), dissolved in a volatile halogenated solvent (Forane® 113 from Atofina), is deposited by dip coating (or "dip-coating" in English) on the surface. of the previously etched and silanized glass support. This is then baked at 200 ° C. to remove the solvent residues and impregnate the porosities of the glass with the fluorinated wax.
- EXAMPLE 3 Aluminum Support + PTFE Dispersion + Post Impregnation of Fluorinated Wax in Solution
- a PTFE-type PTFE-type bonded primer composition containing a PTFE resin is applied to a pre-degreased aluminum wafer.
- PAI hanging resin, silica and carbon black After drying of this layer at 70 ° C., a second fluorinated layer composed of PTFE and 5% of acrylic resin in emulsion is applied. The whole is baked at a temperature of 430 ° C for 11 minutes.
- the PTFE layer obtained is impregnated by slow dipping (or dip-coating) in a fluorinated wax (Dyneon THV 500GZ), dissolved in a volatile halogenated solvent (Forane® 113 d 'Atofina).
- a fluorinated wax Dist THV 500GZ
- a volatile halogenated solvent Formane® 113 d 'Atofina
- the angle of tilt required to pick up a drop of olive oil placed on the surface brought to 170 ° C is less than 2 °, which shows that the adhesive force of the liquid on the hot moving surface is particularly low: the surface has good non-stick properties at high temperatures.
- the PTFE primer layer is rendered porous using sacrificial particles degrading during high temperature baking.
- the characterization test is also carried out.
- the tilt angle needed to pick up a drop of olive oil placed on the surface raised to 170 ° C is less than 2 °.
- EXAMPLE 4 Aluminum support + sol-gel coating, in which fluorinated wax dispersion is added in postaddition
- a sol-gel coating is prepared in the form of a bicomponent (having a portion A and a portion B). Fluorinated wax dispersion is added to the set post-additivation. Part A makes it possible to bring the pigmentation and / or mineral fillers so as to obtain a thick and cohesive film, while part B comprises the reactive silanes which will constitute the sol-gel matrix. An acidic catalyst is introduced into part B.
- the silanes used are precursors of chemical formula R n -M (OR ') 4-n, in which R and R' are alkyl chains, and n is between 0 and 3
- MTES methyltriethoxysilane
- Part A is prepared by successively introducing the colloidal silica filler, water, alcohol (intended to improve the compatibility of parts A and B), the pigment and alumina. Then, grinding of the part A in a sun gear is carried out.
- Part B is prepared separately by mixing the silane with the organic acid in order to limit the reactivity of the silane. The parts A and B are then combined in a mixer to create an intimate mixture and to allow the hydrolysis reaction. The mixing operation can be rapid in itself but it is necessary to allow at least 12 hours to react this mixture before application as a coating.
- a hydrolysed sol-gel solution is obtained, to which is added a surfactant of fluorinated polyether type (Polyfox 151N) in a proportion of 1% by weight relative to the wet sol-gel solution (before addition of the fluorinated wax).
- a surfactant of fluorinated polyether type Polyfox 151N
- the fluorinated wax in dispersion (Dyneon THV 340Z - melting point 145 ° C.) is then added, with stirring, at a content of 1% by weight relative to the total formulation of wet sol-gel.
- the assembly (hydrolysed sol-gel solution + fluorinated wax) is applied by spraying onto a previously degreased aluminum support. Baking for 30 minutes at 200 ° C. finalizes the crosslinking of the inorganic sol-gel network.
- Variant 1 of Example 4 The sol-gel layer used is made porous by using sacrificial particles that degrade during high temperature cooking.
- the characterization test is also carried out.
- the tilt angle needed to pick up a drop of olive oil placed on the surface raised to 170 ° C is less than 2 °.
- Variant 2 of Example 4 The sol-gel layer used is made mesoporous by using micellar particles creating voids after firing at high temperature.
- the characterization test is also carried out.
- the tilt angle needed to pick up a drop of olive oil placed on the surface raised to 170 ° C is less than 2 °.
- a sol-gel composition is prepared in the same manner as in Example 4, in the form of a two-component (with a part A and a part B).
- Part A of this two-component is prepared by successively introducing the colloidal silica filler, water, alcohol (intended to improve the compatibility of parts A and B), the pigment, the alumina and the stearate powder. of calcium. Then, grinding of the part A in a sun gear is carried out.
- Part B is prepared separately by mixing the silane with the organic acid in order to limit the reactivity of the silane. Then, we meet, in a mixer, parts A and B to create an intimate mixture and allow the hydrolysis reaction. The mixing operation can be rapid in itself but it is necessary to allow at least 12 hours to react this mixture before application as a coating.
- the assembly is applied by spraying on a previously degreased aluminum support. Baking for 60 minutes at 150 ° C. completes the crosslinking of the inorganic sol-gel network.
- the tilt angle needed to pick up a drop of olive oil placed on the surface raised to 170 ° C is less than 2 °, which shows that the force of the tilt angle adhesion of the liquid to the hot moving surface is particularly low: the surface has good non-stick properties at high temperatures.
- a sol-gel composition is prepared in the same manner as in Examples 4 and 5, in the form of a two-component (with part A and part B).
- Part A of this bi-component is prepared by successively introducing the colloidal silica filler, water, alcohol (intended to improve the compatibility of parts A and B), the pigment, and alumina. Then, grinding of the part A in a sun gear is carried out.
- Part B is prepared separately by mixing the silane with the organic acid in order to limit the reactivity of the silane. Then, in a mixer, the parts A and B are combined to create an intimate mixture and to allow the hydrolysis reaction.
- the mixing operation may be rapid in itself but it is necessary to allow the mixture to react for at least 12 hours prior to application as a coating.
- the CRAYVALLAC® WW-1001 polyethylene wax (in dispersion) is then added, with stirring, to a content of 1% by weight relative to the total formulation of wet sol-gel.
- the assembly is applied by spraying on a previously degreased aluminum support. Baking for 60 minutes at 150 ° C. completes the crosslinking of the inorganic sol-gel network.
- EXAMPLE 7 Aluminum support + PTFE dispersion, in which grafted silica particles of fluorinated branches are introduced Grafting of fluorinated branches onto silica particles:
- a silanized oligomer of poly-HFPO of formulation is prepared separately:
- reaction medium is filtered and the residue rinsed with the reaction solvent and then dried under vacuum.
- the particles obtained are silica particles grafted with HFPO. These particles are analyzed by differential scanning calorimetry (DSC): a first-order transition is observed at around 85 ° C. Inclusion in a formulation based on PTFE resin:
- silica particles grafted with HFPO are introduced into a formulation based on a PTFE dispersion, the composition of which is given in Table 4 below:
- This composition is applied to a previously prepared aluminum support. After baking (at 380 ° C) to ensure the filming of the whole, a dry film with a thickness of 5 ⁇ m is obtained.
- the angle of tilt required to pick up a drop of olive oil placed on the surface brought to 170 ° C is less than 2 °, which shows that the adhesive force of the liquid on the hot moving surface is particularly low: the surface has good non-stick properties at high temperatures.
- EXAMPLE 8 Stainless steel support + sol-gel coating, into which grafted silica particles of fluorinated branches are introduced
- HFPO-grafted silica particles were prepared in the same manner as in Example 7.
- grafted silica particles are introduced into a sol-gel-based formulation, the composition of which is given in Table 5 below:
- TOTAL 100.0 This composition is prepared in the form of a bicomponent (with part A and part B).
- the compounds of parts A and B are mixed separately and then combined in a mixer which is stirred vigorously to obtain an intimate mixture and allow the hydrolysis reaction. Allowed to stand for 12 hours then the mixture is applied to a previously prepared stainless steel support. After drying at 260 ° C. for 30 minutes to ensure the filming of the whole, a dry film with a thickness of 5 ⁇ m is obtained.
- the angle of tilt required to pick up a drop of olive oil placed on the surface brought to 170 ° C is less than 2 °, which shows that the adhesive force of the liquid on the hot moving surface is particularly low: the surface has good non-stick properties at high temperatures.
- a fluorinated POSS is prepared by simply reacting a fluorinated vinyl derivative with a polyhydridisilsesquioxane (using a palladium-derived catalyst) which is entirely substituted so as to fix a fluorinated chain on each of the SiH groups, according to the structural formula shown in FIG.
- R 1, 2 , 3 , 4, 5, 6, 8, 8 F (CF (CF 3 ) CF 2 0) n CF (CF 3 ) CH 2 CH 2 - for which the molecular weight Mn is greater than 6000 Da and the softening point is above 85 ° C.
- This composition is prepared in the form of a bicomponent (with part A and part B).
- the compounds of parts A and B are mixed separately and then combined in a mixer which is stirred vigorously to obtain an intimate mixture and allow the hydrolysis reaction. Allowed to stand for 12 hours, then the mixture is applied to a previously prepared stainless steel support. After drying at 260 ° C. for 30 minutes to ensure the filming of the whole, a dry film with a thickness of 5 ⁇ m is obtained. Result of tilt angle measurement test
- the angle of tilt required to pick up a drop of olive oil placed on the surface brought to 170 ° C is less than 2 °, which shows that the adhesive force of the liquid on the hot moving surface is particularly low: the surface has good non-stick properties at high temperatures. These properties are preserved after aging of the surface at 170 ° C for one hour, which shows that this surface is resistant to high temperature and is therefore compatible with use as a culinary article.
- a fluorinated copolymer is prepared by reacting under the usual conditions the following three monomers in the following proportions:
- a polymer in the form of a latex dispersion in water at a concentration of 55% by weight is obtained.
- the polymer has the structure of a comb with softening of the main chain at 285 ° C and softening of the pendant chains at 85 ° C.
- the latex dispersion is spray-applied onto a previously degreased aluminum support. Then, the coated support is baked at 370 ° C for 10 minutes. A finishing film in the form of a dry film with a thickness of 5 ⁇ m is obtained. Result of tilt angle measurement test
- the angle of tilt required to pick up a drop of olive oil placed on the surface brought to 170 ° C is less than 2 °, which shows that the adhesive strength of the liquid on the hot moving surface is particularly weak: the surface has good high temperature non-stick properties.
- a functional methacrylic copolymer is prepared by copolymerizing the following two monomers in a solvent medium in the following mass proportions:
- a hydroxyl fluorinated oligomer of F (CF (CF 3 ) CF 2 O) n CF (CF 3 ) CH 2 CH 2 -OH for which the molecular weight is added is grafted onto the polymer in stoichiometric amount relative to the available acidic functions. greater than 4500 Da.
- the resulting polymer has the structure of a comb, with a main chain having a softening temperature of 140 ° C and pendant chains having a softening temperature of 85 ° C.
- the polymer obtained is dissolved in the solvent phase and then applied to a previously degreased aluminum support. Then, the coated support is baked at 200 ° C. for 1 hour and a dry film with a thickness of 5 ⁇ m is obtained. Result of tilt angle measurement test
- the angle of tilt required to pick up a drop of olive oil placed on the surface brought to 170 ° C is less than 2 °, which shows that the adhesive force of the liquid on the hot moving surface is particularly low: the surface has good non-stick properties at high temperatures.
- a functional methacrylic copolymer is prepared by copolymerizing the following two monomers in a solvent medium in the following mass proportions:
- the polymer is grafted, in stoichiometric amount relative to the available acid functional groups, a silicone oligomer monohydroxy (R) 3 S1O- (Si (CH 3) 2) n _ Si (CH 3) 2 OH for which the molecular weight is greater at 1000 Da and R is a nonpolar alkyl group.
- the polymer obtained has the structure of a comb with softening of the main chain at 140 ° C and softening of the pendant chains at 85 ° C.
- the polymer obtained is dissolved in the solvent phase and then applied to a previously degreased aluminum support. Then, the coated support is baked at 200 ° C. for 15 minutes and a dry film with a thickness of 5 ⁇ m is obtained.
- the angle of tilt required to pick up a drop of olive oil placed on the surface brought to 170 ° C is less than 2 °, which shows that the adhesive force of the liquid on the hot moving surface is particularly low: the surface has good non-stick properties at high temperatures.
- a functional methacrylic copolymer is prepared by copolymerizing the following two monomers in a solvent medium in the following mass proportions:
- a liquid crystal polymer is obtained which is dissolved in the solvent phase and then applied to a previously degreased aluminum support. Then, we proceed to baking the coated support at 200 ° C. for 15 minutes and a dry film with a thickness of 5 ⁇ m is obtained.
- the angle of tilt required to pick up a drop of olive oil placed on the surface brought to 170 ° C is less than 2 °, which shows that the adhesive force of the liquid on the hot moving surface is particularly low: the surface has good non-stick properties at high temperatures.
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1455941A FR3022757A1 (fr) | 2014-06-25 | 2014-06-25 | Article culinaire muni d'un revetement antiadhesif comprenant une surface mobile a chaud |
| PCT/FR2015/051718 WO2015197985A1 (fr) | 2014-06-25 | 2015-06-25 | Article culinaire muni d'un revêtement antiadhésif comprenant une surface mobile a chaud |
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| Publication Number | Publication Date |
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| EP3161074A1 true EP3161074A1 (fr) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| EP15753961.0A Pending EP3161074A1 (fr) | 2014-06-25 | 2015-06-25 | Article culinaire muni d'un revêtement antiadhésif comprenant une surface mobile a chaud |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20170158863A1 (fr) |
| EP (1) | EP3161074A1 (fr) |
| FR (2) | FR3022757A1 (fr) |
| WO (1) | WO2015197985A1 (fr) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3146008A4 (fr) * | 2014-05-20 | 2018-01-24 | Whitford Corporation | Compositions sol-gel à dureté et résistance aux chocs améliorées |
| US9656239B2 (en) | 2014-06-16 | 2017-05-23 | International Business Machines Corporation | Apparatus for controlling metals in liquids |
| CN112426046B (zh) * | 2020-10-29 | 2021-08-03 | 苏州加益不锈钢制品有限公司 | 一种底部具有环型凹凸纹理的导热新材料不粘锅 |
| CN113354969A (zh) * | 2021-06-21 | 2021-09-07 | 江苏诺米新材料科技有限公司 | 一种耐久铝单板及其制备方法 |
| CN116005097B (zh) * | 2022-12-29 | 2024-12-27 | 武汉苏泊尔炊具有限公司 | 不粘炊具及其制造方法 |
| CN115926502B (zh) * | 2022-12-29 | 2024-09-06 | 武汉苏泊尔炊具有限公司 | 不粘材料及其制备方法和不粘涂料 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1459995A (en) * | 1972-11-20 | 1976-12-31 | British Gas Corp | Vitreous enamel coatings |
| JPS6021193B2 (ja) * | 1976-12-14 | 1985-05-25 | ダイキン工業株式会社 | フツ素樹脂被覆用組成物 |
| US4293339A (en) * | 1980-02-28 | 1981-10-06 | The United States Of America As Represented By The Secretary Of The Navy | Underwater wax formulation and method |
| EP0837901A1 (fr) * | 1995-06-28 | 1998-04-29 | E.I. Du Pont De Nemours And Company | Nanocomposites de fluoropolymere |
| US6228915B1 (en) * | 1999-04-15 | 2001-05-08 | General Electric Company | Compositions and methods for reduced food adhesion |
| DE60020964T2 (de) * | 1999-04-28 | 2006-05-11 | General Electric Co. | Zusammensetzungen und verfahren zur verminderten nahrungsmittelhaftung |
| DE102004062739A1 (de) * | 2004-12-27 | 2006-07-06 | Degussa Ag | Selbstreinigende Oberflächen mit durch hydrophobe Partikel gebildeten Erhebungen, mit verbesserter mechanischer Festigkeit |
| US20100028604A1 (en) * | 2008-08-01 | 2010-02-04 | The Ohio State University | Hierarchical structures for superhydrophobic surfaces and methods of making |
| CN103649240B (zh) * | 2011-01-19 | 2016-09-14 | 哈佛学院院长等 | 具有高压稳定性、光学透明性以及自修复特征的光滑表面 |
| WO2013115868A2 (fr) * | 2011-11-04 | 2013-08-08 | President And Fellows Of Harvard College | Surfaces glissantes dynamiques et commutables |
| WO2013184559A1 (fr) * | 2012-06-03 | 2013-12-12 | Massachusetts Institute Of Technology | Surfaces superhydrophobes |
| US9963597B2 (en) | 2012-07-12 | 2018-05-08 | President And Fellows Of Harvard College | Slippery self-lubricating polymer surfaces |
-
2014
- 2014-06-25 FR FR1455941A patent/FR3022757A1/fr active Pending
-
2015
- 2015-06-25 US US15/321,454 patent/US20170158863A1/en not_active Abandoned
- 2015-06-25 FR FR1555871A patent/FR3022835A1/fr not_active Withdrawn
- 2015-06-25 WO PCT/FR2015/051718 patent/WO2015197985A1/fr not_active Ceased
- 2015-06-25 EP EP15753961.0A patent/EP3161074A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3022835A1 (fr) | 2016-01-01 |
| WO2015197985A1 (fr) | 2015-12-30 |
| US20170158863A1 (en) | 2017-06-08 |
| FR3022757A1 (fr) | 2016-01-01 |
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