WATER-BASED COVERING COMPOSITION, INCLUDING POLYESTER AND SALT OF METAL AND FATTY ACID Russian patent published in 2014 - IPC C09D167/08 C08L67/02 C08L67/08 

FIELD: chemistry.

SUBSTANCE: claimed invention relates to a covering water-based composition. Described is the covering water-based composition, including: (a) from 10 to 50 wt % of a dispersed in water and hydrophobic polyester polymer, including a product of reaction of 30-70 wt % of a terephthalate polymer, 5-40 wt % of a compound with hydroxyl functional groups, containing, at least, two hydroxyl groups, 1-20 wt % of a compound with carboxyl functional groups, containing, at least, two carboxyl groups, and 10-60 wt % of a hydrophobic compound, selected from the group, including linear or branched fatty acids C₆-C₂₄ or their triglycerides, with the compound with hydroxyl functional groups being present in an amount from 1 to 3 equivalents with respect to the hydrophobic part, (b) from 50 to 90 wt % of a salt of metal and fatty acid, with the amounts being given in terms of the total content of solid substances in the covering water-based composition, and (c) base in an amount, constituting from 70% to 130% of the number of carboxyl acidic groups in the polymer. Also described are: a method of obtaining the claimed composition, its application as a coating for a substrate for packing food products, and a substrate, covered with the claimed composition.

EFFECT: obtaining the covering composition for giving the substrate good repelling properties with the simultaneous preservation of good oil-resistant properties.

10 cl, 1 dwg, 5 ex