FIELD: chemistry.
SUBSTANCE: aqueous medium contains A) one or more water-diluted polyester polyols with hydroxyl number ranging from 20 to 300 mg KOH/g and acid number from 20 to 80 mg KOH/g B) one or more cross linking agents which are active towards OH groups, C) water, D) neutralising agent, and can also contain solvents, auxiliary agents and additives.
EFFECT: good adhesion to metals and high resistance to aggressive media.
13 cl, 4 ex, 2 tbl
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