AQUEOUS SEMI-FINISHED AND PRIMARY NON-STICK COATING COMPOSITIONS COMPRISING AROMATIC POLYMERS

• Main Authors: JOUTANG, Isabelle, GANTILLON, Barbara, TEISSIER, Anne
• Format: Patent
• Language: English; French; German
• Published: 08.11.2023
• Subjects: ADHESIVES; APPARATUS FOR MAKING BEVERAGES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COFFEE MILLS; CORRECTING FLUIDS; DOMESTIC ARTICLES OR APPLIANCES; DYES; FILLING PASTES; FURNITURE; HUMAN NECESSITIES; INKS; KITCHEN EQUIPMENT; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPICE MILLS; SPRAYING OR ATOMISING IN GENERAL; SUCTION CLEANERS IN GENERAL; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

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 μm 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.