COMPOSITION, ITS APPLICATION AND METHOD FOR REMOVING AND PREVENTING CONTAMINATIONS OF PAPER-MAKING EQUIPMENT WITH MOISTURE-RESISTANT RESINS Russian patent published in 2021 - IPC D21C9/00 D21H21/02 D21H21/04 D21H21/20 

FIELD: paper industry.

SUBSTANCE: invention relates to the use of a composition containing an aqueous solution of weak organic acid, a surfactant, a catalyst containing a divalent metal ion, and, optionally, a solvent containing glycol ester for the cleaning of paper-making equipment from contaminations with moisture-resistant resins, wherein these contaminations are formed, when using moisture-resistant resins in the paper making process, where moisture-resistant resin is polyamide-epichlorohydrin (PAE) resin, by a contact of paper-making equipment with the specified composition. The invention also relates to a method for preventing the contamination of paper-making equipment with moisture-resistant resins during the paper making process, where the method includes a stage of a contact of equipment with a composition containing an aqueous solution of weak organic acid, a surfactant, a catalyst containing a divalent metal ion, and, optionally, a solvent containing glycol ester, before, and/or during, and/or after the addition of moisture-resistant resin during the paper making process, where moisture-resistant resin is polyamide-epichlorohydrin (PAE) resin.

EFFECT: obtaining a composition for the cleaning of paper-making equipment.

13 cl, 1 dwg, 6 tbl, 2 ex