FIELD: chemistry.
SUBSTANCE: branched amorphous macro-polyols are obtained by reacting at least one carbonic acid component and at least one alcohol component consisting of 10-25 mol % alcohol with at least three functional groups, and 75-90 mol % additional alcohol containing linear and/or branched aliphatic and/or cycloaliphatic and/or aromatic diols and/or polyols, in the presence of a cross-linking agent selected from a group comprising polyisocyanate and/or melamine resin and/or derivative thereof. The polyester is characterised by molecular weight of 2500-4500 g/mol, hydroxyl number of 0-200 mg KOH/g and acid number of 0-10 mg KOH/g. Described is a method of coating metal bands and coated metal bands obtained using said method.
EFFECT: sufficient flexibility of coating of metal bands combined with sufficient reactivity of cross linkage.
12 cl, 8 tbl, 6 ex
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