COMPOSITION FOR MANUFACTURING LAMINATED DIFFICULTLY COMBUSTIBLE MATERIALS Russian patent published in 2001 - IPC

FIELD: wood-industry, more particularly manufacture of laminated materials. SUBSTANCE: composition comprises filler in the form of wood fiber, shavings or finally divided waste of annals, carbamidoformaldehyde of phenol-formaldehyde resin, ammonium polyphosphates and paraffin, artificial fir production waste and ammonium chloride, ratios of components being as follows, wt % b dry matter: ammonium polyphosphates, 9-18.0; carbamidoformaldehyde or phenol-formaldehyde resin, 7.0-17.0; paraffin, 0.5-1.5; ammonium chloride, 0.5-3.5; artificial fir production waste, 32.0- 39.0; and filler, the balance. EFFECT: greater strength of laminated materials and higher water resistance thereof fireproof properties remaining unchanged, wider range of raw materials used, due to using artificial fir production waste, and lower cost of laminations due to reduced consumption of chemicals. 2 cl, 2 tbl