| 摘要 |
Oil-resin weld for production of cores, characterised in that it contains 2-22 weight percent of oxidized low-viscose linseed oil of conventional viscosity 30 seconds measured with Ford viscosity cup, 6-55 weight percent of oxidized high-viscose rapeseed oil of conventional viscosity 90-120 seconds measured with Frenkel viscosity cup, 1-10 weight percent of low-melting coumarone-indene resin, 0.04-0.4 weight percent of lead white siccative, containing 20% Pb, 0.02-0.5 weight percent of manganous siccative, containing 6% Mn, 0.01-0.3 weight percent of zinc siccative, containing 6% zinc, 5-20 weight percent of carbon hydrate solvent in form of kerosene or 30-70 weight percent of dextrin, 1-1.5 weight percent of rotanin, 30-32 weight percent water or 30-70 weight percent whitened rapeseed oil and alternatively may contain 10-43 weight percent mixture of resin acids esters, alcohols, higher phenols and oxyacids, derived from processing of thallium oil, 15-17 weight percent saturated and unsaturated fatty acids and higher boiling point alcohols and terpenes carbohydrates, derived from processing of thallium oil and 20-30 weight percent fish oil.
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