FIELD: chemistry.
SUBSTANCE: latent dispersing agents obtained by hydrogenating an alkyl ketene dimer, an alkenyl ketene dimer or a ketene dimer are described, and methods for improvement of the repulpability of paper and cardboard with a wax coating are described.
EFFECT: addition of a latent dispersing agent to paper or cardboard increases its water resistance and resistance to water vapour while maintaining good recycling and repulpability.
28 cl, 5 dwg, 12 tbl, 6 ex
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