FIELD: foundry. SUBSTANCE: mixture was composed of 3.0 to 6.0 % by weight soluble phenol formaldehyde resin, 0.9 to 1.7 % by weight of 33-percent aqueous solution of urotropine, 0.01 to 0.1 % by weight of emulsion based on silicon-organic product, refractory filler making up the remainder. EFFECT: emulsion made mixture harder, reduced its adherence to pattern auxiliaries and improved sanitary-hygienic working conditions. 2 tbl
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