Abstract: Provided is an aqueous amine-free coating composition including at least one aromatic polymer, wherein the aromatic polymer is in the form of powder having a d90 less than or equal to 20 ?m and in that the aqueous coating composition further includes polar aprotic solvent at a content greater than 0% by weight and less than or equal to 25% by weight. Also provided is an aqueous amine-free non-stick coating composition including such an aqueous composition for a coating, and the respective methods for producing same. Further provided is a method for producing an item on one of the faces of a metal substrate, from at least one layer of the coating composition or one layer of the non-stick coating composition.

Abstract: Provided are non-stick coating hybrid primer compositions based on polyimide resin and/or polyamide-imide resin. Also provided are processes for preparing such compositions. Finally, non-stick coatings incorporating such compositions and a process for manufacturing articles comprising such non-stick coatings are provided.

Abstract: Provided is a non-stick coating primer composition, comprising an aqueous composition and a fluorocarbon resin dispersion, wherein the aqueous composition comprises a polyimide or a polyamide imide or a polyamide-amic acid; a Lewis base; a polar aprotic solvent; and at least 15% water compared to the total weight of the composition, wherein the Lewis base is one of an aminosilane or a silazane. Methods for preparing a non-stick coating primer composition are also provided.

Abstract: Provided is an aqueous amine-free coating composition including at least one heterocyclic polymer, wherein the heterocyclic polymer is in the form of powder having a d90 less than or equal to 20 ?m. Also provided is an aqueous amine-free non-stick coating composition including such an aqueous composition for a coating, and the respective methods for producing same. Further provided is a method for producing an item on one of the faces of a metal substrate, from at least one layer of coating composition or one layer of non-stick coating composition 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 are non-stick coating hybrid primer compositions based on polyimide resin and/or polyamide-imide resin. Also provided are processes for preparing such compositions. Finally, non-stick coatings incorporating such compositions and a process for manufacturing articles comprising such non-stick coatings are provided.

Abstract: Provided is a metal-dioxide nanofiller including at least two graft chains, at least one of the chains being a hydrophilic and the other being a hydrophobic chain compatible with fluorinated polymers. The hydrophobic chain is an oligomer, the weight-average molar mass Mw of which is between 300 and 20, 000 g/mol-1 · Also provided is a non-stick coating comprising such a filler, as well as to a culinary article provided with such a coating.

Abstract: Provided is a metal-oxide nanofiller including at least two graft chains, at least one of the chains being hydrophilic and the other being a hydrophobic chain compatible with fluorinated polymers. The hydrophobic chain is an oligomer, the weight-average molar mass Mw of which is between 300 and 20,000 g/mol?1. Also provided is a non-stick coating comprising such a filler, as well as to a culinary article provided with such a coating.

Abstract: Provided is an aqueous amine-free coating composition including at least one aromatic polymer, wherein the aromatic polymer is in the form of powder having a d90 less than or equal to 20 ?m and in that the aqueous coating composition further includes polar aprotic solvent at a content greater than 0% by weight and less than or equal to 25% by weight. Also provided is an aqueous amine-free non-stick coating composition including such an aqueous composition for a coating, and the respective methods for producing same. Further provided is a method for producing an item on one of the faces of a metal substrate, from at least one layer of the coating composition or one layer of the non-stick coating composition.

Abstract: Provided is an aqueous amine-free coating composition including at least one heterocyclic polymer, wherein the heterocyclic polymer is in the form of powder having a d90 less than or equal to 20 ?m. Also provided is an aqueous amine-free non-stick coating composition including such an aqueous composition for a coating, and the respective methods for producing same. Further provided is a method for producing an item on one of the faces of a metal substrate, from at least one layer of coating composition or one layer of non-stick coating composition according to the invention.

Abstract: Provided is an aqueous composition including a polyimide or a polyamide-imide or a polyamide-amidic acid, as well as a Lewis base, a polar aprotic solvent, and at least 15% water compared to the total weight of said composition, wherein the Lewis base is an aminosilane or a silazane.

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: The present invention relates to a cooking article a substrate having a contact surface at least partially made of metal and coated with a non-stick coating comprising at least one layer including at least one fluorocarbon resin alone or mixed with a thermostable coupling binder that is heat-resistant up to at least 200° C., the fluorocarbon resin and, if necessary, the thermostable coupling binder forming a sintered network. According to the invention, the contact surface comprises an interface layer consisting of a polymer layer formed by plasma polymerization from a precursor selected from among unsaturated carboxylic acids, the salts or esters thereof, saturated carboxylic acid vinyl esters, unsaturated dicarboxylic acids, the salts, esters, hemiesters or anhydride esters thereof, and unsaturated epoxides. The present invention also relates to a method for manufacturing such an article.

Abstract: Provided is a metal-oxide nanofiller including at least two graft chains, at least one of the chains being hydrophilic and the other being a hydrophobic chain compatible with fluorinated polymers. The hydrophobic chain is an oligomer, the weight-average molar mass Mw of which is between 300 and 20,000 g/mol?1. Also provided is a non-stick coating comprising such a filler, as well as to a culinary article provided with such a coating.

Abstract: The present invention refers to the production of a polyester-type polymer and more particularly to the solid phase condensation of a polyester. The invention presents a process for manufacturing polyester which comprises at least the following steps: a) esterifying of transesterifying a carboxylic diacid or a carboxylic acid diester with a diol, b) prepolymerizing the esterification or transesterification product in liquid phase until an average degree of polymerization between 10 and 50, preferably between 20 and 45, c) preparing a dispersion of the prepolymer in a non-solvent of diol and non-swelling of the prepolymer liquid, the prepolymer being present in the dispersion in the form of solid particles having diameters under 2 mm and crystallized, with a crystalline lamella thickness under 17 nm, d) polymerizing in dispersed solid phase, e) recovering solid particles. The accomplishment of a dispersed solid phase polymerization permits improving the reaction kinetics.