RAW MIX FOR MAKING HEAT-INSULATING PRODUCTS Russian patent published in 1999 - IPC

FIELD: construction of buildings and structures. SUBSTANCE: raw mix comprises organic filler as mixture of crushed unfeeding straw of cereals, wood sawdust and/or crushed plastic foam waste, carbamide-formaldehyde resin modified by hydrophobic additive which is spent mother liquor of styrene suspension polymerization. Ratios of components are as follows, wt %: organic filler, 80-88; carbamidoformaldehyde resin, 9-15; hydrophobic additive, 3-5. EFFECT: reduced water absorption and swelling capacity, greater hardness of products, and utilization of waste. 4 cl, 2 tbl