ANTIICE COMPOSITION AND A METHOD FOR PREPARING THE SAME

摘要

FIELD: icing protection. ^ SUBSTANCE: invention is intended for use in municipal economy and in traffic service for maintaining roads in winter to prevent road ice mound and as well in chemical industry. Composition comprises aqueous solution of sodium chloride (5-12%) and sodium formate and glycolate (12-21% in sum). Composition is prepared by cleaving industrial-grade chloral with sodium hydroxide solution followed by separation of formed chloroform from aqueous solution of salts and unreacted sodium hydroxide, heat treatment of the latter and subsequent neutralization of excess sodium hydroxide with hydrochloric acid and adjusting ingredient ratio by adding water and potassium chloride. ^ EFFECT: reduced corrosive activity of composition and crystallization temperature below -30°C, and reduced expenses due to avoided use of expensive high-purity sodium formate. ^ 2 cl, 1 tbl, 7 ex