WATER-BASED POLYURETHANE COATINGS Russian patent published in 2013 - IPC C08G18/10 C08G18/42 C08G18/79 C09D175/04 

FIELD: chemistry.

SUBSTANCE: present invention relates to versions of a water-based coating composition which is suitable for use particularly in the aerospace field. The water-based coating composition contains: (a) an essentially anhydrous basic component containing at least one hydrophilic polyol resin and at least one hydrophobic polyol resin, (b) an activating component containing at least one hydrophobic polyisocyanate and (c) water, wherein said composition contains 1-3 wt % of an organic solvent of the total weight of the water-based coating composition and component (a), (b) and (c) are mixed shortly before applying the water-based coating composition. In one version of the composition, the hydrophilic polyol resin can be selected from a group consisting of polyesters, polyethers, polyurethanes, caprolactones, alkyde resins and combinations thereof. Described also is a coating made using the polyurethane compositions disclosed herein.

EFFECT: obtaining water-based coating compositions which are stable during storage and have significantly low content of volatile organic compounds, coatings from which have improved technical characteristics such as impact resistance, specular gloss and longevity.

15 cl, 17 tbl, 7 ex