CATALYST COMPOSITIONS, METHODS OF PREPARATION AND METHODS FOR ALKOXYLATION OF ALCOHOLS USING SAID CATALYSTS Russian patent published in 2019 - IPC B01J31/02 C07C41/03 C07C43/13 

FIELD: chemistry.

SUBSTANCE: invention relates to compositions of alkoxylation catalysts, a method for preparing them and alkoxylation methods using said catalysts. Described is a method of producing an alkoxylation catalyst in which: catalyst precursor is prepared in the form of a suspension formed by reaction of an alkoxylated alcohol mixture having the general formula: R₁-O-(C_nH_2nO)_pH, where R₁ denotes an organic radical containing from about 1 to about 30 carbon atoms, n is equal to 1–3 and p is integer of 1–50, with calcium hydroxide, carboxylic acid, wherein said carboxylic acid has more miscibility in hydrocarbon solvents than in water and has from about 5 to about 15 carbon atoms, an inorganic acid and propylene oxide under such conditions to propoxylate at least a portion of the alkoxylated alcohols; and adding an antioxidant to said catalyst precursor to obtain an alkoxylation catalyst, wherein said antioxidant is butylated hydroxytoluene. Method of alkoxylation involves preparing said alkoxylation catalyst and carrying out, in the presence of said alkoxylation of a reagent reaction catalyst containing a compound having an active hydrogen atom and alkylene oxide under alkoxylation conditions to obtain an alkoxylated derivative of said reagent.

EFFECT: preventing oxidation of alkoxylated alcohols, improving the efficiency of the method by lowering temperature, eliminating the need to remove water and increasing reaction speed, preventing isomerization of terminal double bonds in certain alcohols and improved transportation of the end product.

18 cl, 6 dwg, 3 ex