COATING COMPOSITIONS, ELASTIC IMPERMEABLE COATINGS OBTAINED THEREFROM, AND METHODS OF APPLYING SUCH COATINGS Russian patent published in 2019 - IPC C09D7/00 C09D175/04 B05D3/02 C08G18/08 C08G18/10 C09D133/00 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to coating compositions, elastic impermeable (protective) coatings, a method of applying said coatings, to a multilayer coating and a coated substrate. Coating composition includes an aqueous carrier medium, at least a first polymer and polymer particles with a core-shell structure dispersed in an aqueous carrier medium. First polymer contains: (I) an impermeable segment containing aromatic groups and urethane connecting links, urea connection links or a combination thereof; and (II) an elastomeric segment characterized by glass transition temperature of less than 0 °C. Impermeable segment can make at least 30 wt% of the first polymer with respect to the total weight of the solid substance of the first polymer.

EFFECT: invention enables to obtain impermeable coatings for reducing penetration of steam, gas and/or chemical compounds at ambient temperatures, high temperatures, as well as at substantially low temperatures and with good elasticity characteristics.

24 cl, 21 tbl, 24 ex