RADIATION CURABLE WATER-DISPERSIBLE POLYURETHANE(METH)ACRYLATES Russian patent published in 2018 - IPC C08G18/67 C08G18/32 C08G18/28 C08G18/30 C08G18/34 C08G18/38 C08G18/66 C08G18/75 C09D175/04 C09D175/14 

FIELD: chemistry.

SUBSTANCE: present invention relates to radiation curable, water-dispersible urethane(meth)acrylates, to aqueous coating compositions containing them, to their use and to a process for their preparation. Said urethane(meth)acrylate is formed from (a) at least one (cyclic)aliphatic di- and/or polyisocyanate, (b1) of at least one aliphatic diol with a molar mass of less than 700 g/mol, (b2) of at least one polyester diol with a weight average molar mass of 700 to 2,000 and an acid number of not more than 20 mg KOH/g, (c) at least one compound having at least one hydroxyl group and at least one free-radical polymerizable unsaturated group, (d) at least one compound having at least one isocyanate-reactive group and at least one acid group, (e) at least one alkali metal base, (f) optionally at least one mono- and di-C₁-C₄-alkylamine and (g) at least one monofunctional polyalkylene oxide polyether alcohol.

EFFECT: resulting urethane(meth)acrylates exhibit good stability and good pigmentation properties in dispersion and can be used as coatings for wood, paper, leather, plastic and other surfaces, including as an ink.

14 cl, 1 tbl, 1 ex