METHOD OF PURIFYING DIMETHYLFORMAMIDE OR ACETONE FROM VARNISHES AND ENAMELS

摘要

the invention u043au0430u0441u0430u0435u0442u0441u00a0 u0437u0430u043cu0435u0449u0435u043du043du044bu0445 amides series of acids or u043au0435u0442u043eu043du043eu0432, in particular cleaning u0434u0438u043cu0435u0442u0438u043bu0444u043eu0440u043cu0430u043cu0438u0434u0430 or acetone for lacquers and enamels, and may be used in u0445u0438u043cu0438u0447u0435 by the industry. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 - improving the quality of the product. u0434u043bu00a0 this source u0434u0438u043cu0435u0442u0438u043bu0444u043eu0440u043cu0430u043cu0438u0434 or acetone mix modern u043au0430u043bu044cu0446u0438u00a0 (u043au043eu0430u0433u0443u043bu00a0u043du0442) at room temperature, followed by filtering.in this case, the degree of purification of the target product u0434u043eu0441u0442u0438u0433u0430u0435u0442u0441u00a0 from 50 to 95 to 99%. 1, table 2).