PROCESS FOR IMPROVING THE PROPERTIES OF LIQUIDS AND TAILS OF COAL BY O-ALKYLATION OR O-ACYLATION

摘要

P The invention relates to the treatment of liquids and carbon tails by O-alkylation and / or O-acylation to improve the properties. /P P The process of the invention consists in bringing the coal tails or liquids into contact with: a. at least one quaternary ammonium or phosphonium base, and b. at least one alkylating or acylating agent corresponding to the formula R'X in which R 'is a C1 to C20 alkyl or acyl and X is an eliminable group. /P P Application: improvement of the properties of liquids and carbon tails. /P