FIELD: metallurgy. SUBSTANCE: insulating paste has, wt.-%: boric acid 24.5-25.0; dust-like quartz 3.0-3.5; melted corundum 3.0-3.5; disthene-sillimanite with particle size 30-50 mcm 0.3-0.4; polystyrene 6-7, and solvent of chlorinated hydrocarbon order - the rest. EFFECT: enhanced quality of paste. 1 tbl
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