NON-AQUEOUS LIQUID COMPOSITION FOR COATING Russian patent published in 2017 - IPC C08G18/10 C08G18/22 C08G18/38 C08G18/40 C09D175/04 C08G18/24 C08G18/62 

FIELD: chemistry.

SUBSTANCE: composition comprises a) a polyol, b) a polyisocyanate curing agent, c) one or more thiol-containing compounds, d) a metal-containing curing catalyst to accelerate the addition reaction of isocyanate groups and hydroxyl groups, e) a base having a pKa of, at least, 7 and non-interacting with isocyanate groups with a decrease in basicity, and f) one or more acid-containing compounds. The amount of thiol-containing compounds is such that the molar ratio of the thiol groups to the metal atoms of the metal-containing curing catalyst is 1 or higher. The content of the base groups is lower in molar amount than the molar amount of the thiol groups. The molar ratio of the acid groups to the base groups is 1:1 or higher. Coatings produced using this composition have a good balance of properties, such as good stiffness, excellent film appearance, durability and resistance to environmental conditions, are cured at ambient temperature or low heating temperature without the use of equipment for generating ultraviolet light.

EFFECT: composition is suitable for producing compositions with a low content of volatile organic compounds and for a long time remains functional after mixing the components.

10 cl,1 tbl, 3 ex