FIELD: chemistry.
SUBSTANCE: invention relates to water varnish composition for application of coverings on polymers. Varnish composition includes water basic varnish and water dispersion at least partially neutralised wax based on ethylene copolymer. Said wax is selected from the group, which includes waxes based on gradient or statistic ethylene copolymers, which contain units of comonomers: (A) from 12 to 40 wt % of ethylene-unsaturated carboxylic acid of formula (I), where R1 and R2 are hydrogen or alkyl with 1-10 carbon atoms, (B) from 60 to 88 wt % of ethylene units; or (A') from 5 to 50 wt % of units of formula (II) comonomer, where R1 and R2 are hydrogen or cycloalkyl with 3-12 carbon atoms, X is oxygen, A1 is alkylene with 1-10 carbon atoms or cycloalkylene with 4-10 carbon atoms, (B') from 50 to 95 wt % of ethylene units. Wax on ethylene copolymer base, which contains (A) and (B), has Mw from 10000 to 150000 g/mole; pH of its water dispersion is from 1 to 7. Content of water wax dispersion based on ethylene copolymer counted per water basic varnish is from 0.1 to 10 wt %.
EFFECT: claimed composition possesses increased adhesion to polymer bases.
5 cl, 1 dwg, 2 tbl, 3 ex
