FIELD: chemistry.
SUBSTANCE: method for reducing or removing scale in an industrial process is disclosed, comprising adding of the composition to the process, comprising polymeric reaction product of polyamine and two compounds chemically active in relation to nitrogen, one of which contains a group -Si(OR")3, where R" is hydrogen, C1-C20 alkyl or phenyl, wherein the polymeric reaction product has a weight-average molecular weight of at least 500.
EFFECT: usage of hydrophobically modified polyamines in the disclosed method increases the efficiency of aluminosilicate scale removal indifficult-to-treat industrial process streams.
19 cl, 14 tbl, 156 ex
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