METHOD OF A SELECTIVE IMPROVEMENT OF A COLOUR AND COLOUR FASTNESS OF A HYDROCARBON FRACTION

摘要

use: u043du0435u0444u0442u0435u0445u0438u043cu0438u00a0. essence: u0443u0433u043bu0435u0432u043eu0434u043eu0440u043eu0434u043du0443u044e fraction containing dyes and dyes are selectively u0433u0438u0434u0440u043eu0433u0435u043du0438u0437u0430u0446u0438u0438 predecessors, in the presence of a catalyst, the u0436u0430u0449u0435u0433u043e metal selected from the group: palladium, platinum, ruthenium, nickel, u0434u0438u0441u043fu0435u0440u0433u0438u0440u043eu0432u0430u043du043du044bu0439 on u043fu043eu0440u0438u0441u0442u043eu043c medium, in which capacity using the oxide u0430u043bu044eu043cu0438u043du0438u00a0, cream nij, carbon, clay.u043fu0440u043eu0432u043eu0434u00a0u0442 process in the presence of hydrogen, fully dissolved in the raw materials, at a temperature of 40 to 250 & deg;. pressure 7.8 - 15 u0430u0442u043c., hydrogen concentration 0.1 - 3.0 mol.% (table 2).