WATER BASE COATING MATERIAL FOR OBTAINING A COATING LAYER Russian patent published in 2019 - IPC C09D175/04 B05D7/00 C09D11/23 C08G18/70 

FIELD: technological processes; chemistry.

SUBSTANCE: present invention relates to an aqueous two-component basecoat material, as well as to a method for producing such a coating. Aqueous two-component basecoat material contains the main component, which includes a polyurethane resin, which has a hydroxyl number of 15–100 mg KOH/g, and an acid number of 10–50 mg KOH/g, an aqueous dispersion containing water and a polyurethane resin fraction consisting of at least one polyurethane resin, while the fraction of the polyurethane resin contains a gel fraction of at least 50 %, and has a transition to a glassy state at a temperature of less than -20 °C, and has a transition to the molten state at a temperature of less than 100 °C, color or effective pigment, with at least one pigment used in the form of at least one pigment paste, which contains at least one polyurethane resin as a paste paste; as well as a curing component containing a hydrophilic modified polyisocyanate, which has a mass content of isocyanates of 8–18 %.

EFFECT: use of the aqueous two-component material of the above composition for the production of base coatings provides high flexibility and elasticity, as well as effective resistance to external mechanical effects of these coatings.

15 cl, 6 tbl