FIELD: protective compositions. SUBSTANCE: composition comprises phosphoric acid, carbamide, water, nonionic type surfactant and alkyl resins, ratio of components being as follows, wt.%: orthophosphoric acid, 9.1-10.2; carbamide, 11.4-18.4; water, 56.3-68.4; nonionic surfactant and alkyl resins at 1: (60-150) ratio, the balance. EFFECT: time-stable wood materials with high fungitoxicity to wood destructive fungi. 3 cl, 18 ex, 2 tbl
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