ELECTRODEPOSITED COATING COMPOSITIONS Russian patent published in 2021 - IPC C09D5/44 C09D5/08 C09D133/08 C09D133/10 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to an electrodeposited coating composition, processed substrates and methods for applying coating to substrates. The electrodeposited coating composition includes: (a) acrylic polymer containing a product of polymer dispersant polymerization and composition of ethylene-unsaturated monomer of the second stage, while the composition contains more than 40 wt. % of (meth)acrylate monomer of the second stage with hydroxyl functional groups per the total weight of the composition of ethylene-unsaturated monomer of the second stage, where the specified acrylic polymer is present in the amount from 0.1 wt. % to 5 wt. %, (b) film-forming polymer containing ion salt groups that differs from acrylic polymer and that is present in the amount from 40 wt. % to 80 wt. %, and (c) a curing agent in the amount from 10 wt. % to 50 wt. %, where weight percent is calculated based on the total weight of resin solids in the electrodeposited coating composition, wherein the specified composition additionally contains a dispersion medium containing water. A method for applying coating to substrate and substrate covered with the electrodeposited coating composition are also described.

EFFECT: providing the electrodeposited coating composition allowing for obtaining coatings with improved indicator of corrosion resistance of edges (end areas) of substrate, control of crater formation and edge coating.

24 cl, 16 tbl, 11 ex