WATER-DISPERSIBLE POLYISOCYANATES Russian patent published in 2018 - IPC C08G18/70 C08G18/72 C09D175/04 C08L75/04 C09J175/04 C08K5/17 C08K5/521 

FIELD: chemistry.

SUBSTANCE: present invention relates to a water-dispersible polyisocyanate, a coating material, an aqueous coating composition and use thereof for coating wood, paper, textiles, cardboard, parts of buildings, vehicles, etc. Said water-dispersible polyisocyanate comprises at least one di- or polyisocyanate (a), at least one surfactant (b), at least one monofunctional polyalkylene glycol (c), optionally, at least one diol or a high molecular weight polyol (d) and, optionally, at least one diol or polyol with a low molecular weight (e). Surfactant (b) comprises an amine of formula , where R³, R⁴, R⁵ independently of one another are cycloalkyl or C₁-C₁₈-alkyl, and a mixture of compounds based on formulae (I) and (II) , in which R¹ and R² independently of one another, are an unsubstituted alkyl. Molar ratio of compound (II) to compound (I) ranges from 5:95 to 45:55.

EFFECT: resulting water-dispersible polyisocyanates have easier incorporation, and the coatings obtained with their use have good gloss.

14 cl, 1 tbl, 1 ex