FIELD: chemistry.
SUBSTANCE: invention relates to a method of inhibiting the polymerisation of (meth)acrylic acid and/or esters of (meth(acrylic acid by the introduction of an oxygen-containing gas into (meth)acrylic acid and/or ester of (meth)acrylic acid, and (meth)acrylic acid and/or ester of (meth)acrylic acid has at least a 95% purity degree, contains an anti-polymerisation stabiliser and is in the liquid aggregate state; introduction of the oxygen-containing gas is performed into the pipeline, which contains liquid (meth)acrylic acid and/or liquid ester of (meth)acrylic acid, which is supplied to fill the reservoir through a side output opening as the pure product after the distillation or rectification purification in the column. The content of oxygen, for instance, in liquid acrylic acid can reach 12 ppm.
EFFECT: elaboration of the method for the inhibition of (meth)acrylic acid polymerisation.
8 cl, 4 ex
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