Abstract: The present invention therefore relates to a sol-gel finish layer of a non-stick coating of a household article, said layer forming a cooking surface and being free of silica and of colloidal metal oxide.

Abstract: A culinary item includes a hollow metal cup having a bottom and a sidewall extending up from the bottom, said cup having a concave interior face designed to accept food products and a convex exterior face, said interior face or said bottom being coated with a coating which consists successively, starting from the cup, in a hard sub layer and a sol-gel coating, wherein the hard sub layer takes the form of a discontinuous layer, in that the hard sublayer is porous and in that the hard sublayer is made up of one or more non-fluorinated polymer materials selected from polyetherary I ketones (PEAK) and mixtures thereof, possibly containing hard inorganic fillers, possibly conductive fillers and possibly less than 3 wt % of additives with respect to the weight of the hard sublayer.

Abstract: The present invention relates to a non-stick coating comprising a transparent finishing coat, said finishing coat comprising at least one thermostable resin and fillers whose d50 is greater than the average thickness of said finishing coat.

Abstract: The present invention generally relates to anti-stick coatings for cooking utensils, which exhibit improved properties of hydrophobicity and resistance to high temperature. The present invention also relates to a culinary article comprising a support coated in said coating, and a process for applying on the support such a coating according to the invention.

Abstract: Provided is a primer composition for a non-stick coating which includes a polyamide-amic acid having an acid value of 50 to 200 mg KOH/g, a Lewis base, water and at least 5 wt % of a polar aprotic solvent relative to the total weight of said composition. According to the invention, the weight ratio of PAI/polar aprotic solvent in said composition is at least 1.5. Also provided is a method for preparing such a composition, and a method for manufacturing an item comprising a metal substrate to which such a composition is applied.

Abstract: Provided is an article, particularly culinary, comprising a cast iron support having two opposite sides. The article comprises a vitreous coating in the form of at least a continuous layer of a sol-gel material comprising a matrix formed from at least a metal polyalkoxylate and at least a reactive or unreactive silicone oil, the layer of sol-gel material being deposited directly on one at least of the sides of said support, and the side provided with a vitreous coating has a surface roughness Ra ranging between 3 and 15 ?m with a peak count per centimeter RPc ranging between 50 and 200. A method for manufacturing such an article is also provided.

Abstract: Provided is a vitreous coating comprising at least one layer embodied in the form of a continuous film of sol-gel material comprising a matrix formed from at least one metal polyalkoxylate and wherein anisotropically-shaped particles are dispersed, said layer comprising at least one area wherein the particles are particles predominantly inclined by an angle (?) of between 20° and 90° relative to the median plane of the film. The subject matter of the present invention also comprises a method of manufacturing such a coating, and a culinary article one of the surfaces of which is coated with such a coating.

Abstract: Provided is a ceramic coating intended to be applied on a metal support and having the form of at least a continuous film having a thickness between 2 and 100 ?m, this coating comprising a matrix including at least a metal polyalkoxide and wherein are dispersed particles whereof the diameter ranges between 0.01 and 50 ?m, said particles being from a material having a thermal conductivity equal to or higher than 10 W·m?1·K?1 and a bulk density of at the most 3.9 g/cm3. Also provided is an article, for example culinary, comprising such a coating and its method of manufacture.

Abstract: Provided is a vitreous coating comprising at least one layer embodied in the form of a continuous film of sol-gel material comprising a matrix formed from at least one metal polyalkoxylate and wherein anisotropically-shaped particles are dispersed, said layer comprising at least one area wherein the particles are particles predominantly inclined by an angle (?) of between 20° and 90° relative to the median plane of the film. The subject matter of the present invention also comprises a method of manufacturing such a coating, and a culinary article one of the surfaces of which is coated with such a coating.

Abstract: Provided is a primer composition for a non-stick coating which includes a polyamide-amic acid having an acid value of 50 to 200 mg KOH/g, a Lewis base, water and at least 5 wt % of a polar aprotic solvent relative to the total weight of said composition. According to the invention, the weight ratio of PAI/polar aprotic solvent in said composition is at least 1.5. Also provided is a method for preparing such a composition, and a method for manufacturing an item comprising a metal substrate to which such a composition is applied.

Abstract: Provided is an article, particularly culinary, comprising a cast iron support having two opposite sides. The article comprises a vitreous coating in the form of at least a continuous layer of a sol-gel material comprising a matrix formed from at least a metal polyalkoxylate and at least a reactive or unreactive silicone oil, the layer of sol-gel material being deposited directly on one at least of the sides of said support, and the side provided with a vitreous coating has a surface roughness Ra ranging between 3 and 15 ?m with a peak count per centimeter RPc ranging between 50 and 200. A method for manufacturing such an article is also provided.

Abstract: Provided is a ceramic coating intended to be applied on a metal support and having the form of at least a continuous film having a thickness between 2 and 100 ?m, this coating comprising a matrix including at least a metal polyalkoxide and wherein are dispersed particles whereof the diameter ranges between 0.01 and 50 ?m, said particles being from a material having a thermal conductivity equal to or higher than 10 W·m?1·K?1 and a bulk density of at the most 3.9 g/cm3. Also provided is an article, for example culinary, comprising such a coating and its method of manufacture.

Abstract: This invention relates to an article (1) including a substrate (2) including two opposite faces (21, 22), and a sol-gel coating (3) covering at least one of the faces (21, 22) of said substrate (2), in which said sol-gel coating (3) is in the form of a continuous film of a material including a matrix formed by at least one metal polyalkoxylate and at least 5% by weight with respect to the total weight of the coating (3) of at least one metal oxide dispersed in said matrix. According to the invention, the sol-gel coating (3) is coated with a functional design (4) including at least one optically non-transparent chemical substance. This invention also relates to a process for producing an article.

Abstract: This invention relates to an article (1) including a substrate (2) including two opposite faces (21, 22), and a sol-gel coating (3) covering at least one of the faces (21, 22) of said substrate (2), in which said sol-gel coating (3) is in the form of a continuous film of a material including a matrix formed by at least one metal polyalkoxylate and at least 5% by weight with respect to the total weight of the coating (3) of at least one metal oxide dispersed in said matrix. According to the invention, the sol-gel coating (3) is coated with a functional design (4) including at least one optically non-transparent chemical substance. This invention also relates to a process for producing an article.

Abstract: The present invention generally relates to anti-stick coatings for cooking utensils, which exhibit improved properties of hydrophobicity and resistance to high temperature. The present invention also relates to a culinary article comprising a support coated in said coating, and a process for applying on the support such a coating according to the invention.