AMINO ALCOHOL TREATMENT FOR SOL-GEL CONVERSION COATINGS, SUBSTRATES INCLUDING SAME, AND METHODS OF MAKING SUCH SUBSTRATES Russian patent published in 2018 - IPC B05D3/00 B05D5/10 B05D7/14 C09D5/08 C23C18/00 

FIELD: chemistry.

SUBSTANCE: invention relates to the field of conversion coatings intended for the protection of metal substrates against corrosion, as well as coatings ensuring high adhesion of surface coatings and paints to the substrate. Article includes a substrate, a sol-gel conversion coating on the substrate, and a sol-gel conversion coating layer, the treatment layer comprising an amino alcohol. Another embodiment of the article includes a substrate, a sol-gel conversion coating on the substrate, and a sol-gel conversion coating layer, the treatment layer comprising an amino alcohol as well as a coating layer on the treatment layer, the coating layer being a polyurethane-based coating. Methods for manufacturing articles of the invention include applying a partially cured sol-gel composition to a substrate, partially drying the partially cured sol-gel composition to obtain a sol-gel conversion coating, applying a solution comprising an amino alcohol to the sol-gel conversion coating, followed by partially drying the solution containing the amino alcohol and, optionally, applying a surface coating based on polyurethane. Articles of the invention may be used as parts of aerospace vehicles.

EFFECT: technical result consists in improving the adhesion of the polyurethane coating to the substrate by applying a treatment layer comprising an amino alcohol.

20 cl, 4 dwg, 4 tbl