FIELD: chemistry.
SUBSTANCE: invention relates to a painting canvas based on glass fibre intended to be applied on the inner surface of a building, which contains an agent capable of trapping formaldehyde, as well as a method of making said painting canvas. The painting canvas contains an impregnating agent and an agent capable of trapping formaldehyde which is selected from compounds with active methylene groups, hydrazides, tannins, amides, amino acids, peptides and proteins. The method of making the canvas involves feeding the canvas into a padding machine or device having two rollers, each having a centre tube for feeding the impregnating agent under pressure, followed by drying and collecting the canvas. The method includes a step of treating with an agent which is capable of trapping formaldehyde.
EFFECT: use of the canvas reduces the amount of formaldehyde inside buildings.
19 cl, 2 dwg, 2 tbl, 6 ex
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