COVER COMPOSITION, METHOD OF COATING COVER, COATED SUBSTRATE, PACKAGING MATERIAL AND PACKAGING FOR LIQUID Russian patent published in 2017 - IPC C09D129/04 B32B27/10 B32B29/06 B32B9/06 B65B3/00 B65B65/00 B05D1/30 D21H19/36 D21H19/54 D21H19/60 D21H19/70 D21H19/80 

FIELD: chemistry.

SUBSTANCE: surfactant is a water-soluble non-ionic ethoxylated alcohol of the formula RO(CH₂CH₂O)_xH, wherein R is iso-C₁₃H₂₇ and x is 8 or R is iso-C¹⁰ and x is 5 or 7. The solids content in the composition is from 4 to 20 wt %. A method for applying a gas impermeable layer to a substrate using a coating composition and a coated substrate having at least one gas impermeable layer obtained by applying a coating composition to the substrate is also described. In addition, the present invention relates to a packaging material comprising a coated cardboard on which a coating composition is applied and a liquid package containing such a packaging material.

EFFECT: ensuring the stability of the coating applied by the irrigation at a value of dynamic surface tension up to 50 mN M and ensuring faultless operation at very low flow rates, high quality protection combined with an acceptable small number of point defects.

14 cl, 8 dwg, 1 tbl