PROCESS FOR PREPARING A STABLE AQUEOUS DISPERSION OF POLYAMIDE IMIDE WHICH IS FREE OF CARCINOGENIC MUTAGENIC OR REPROTOXIC SUBSTANCES AND APPLICATION TO COATINGS

摘要

The invention concerns a process for preparing an aqueous polyamide imide dispersion characterized in that it comprises at least one step of selecting a polyamide imide powder and a step of producing a dispersion comprising the polyamide imide powder a polar aprotic solvent with a boiling point of more than 180°C at 760 mm Hg and water. The invention also concerns a process for producing a dry polyamide imide film on a substrate.