| 摘要 |
FIELD: organic chemistry, detergents. ^ SUBSTANCE: invention relates to a novel mixture of alkoxylates possessing surface-active, moistening and cleansing properties of the formula: wherein PO means propyleneoxy link; means ethyleneoxy link; n has an average value in the range 1.6-3.3 per 2-ethylhexyl group; m has an average value in the range 3.0-5.5 per 2-ethylhexyl group and comprises less 1.5 wt.-% of unreacted 2-ethylhexanol. Indicated mixture is prepared by interaction of 2-ethylhexanol with propylene oxide at the first step, and at the second step propoxylated mixture is subjected for interaction with ethylene oxide, and amount of 2-ethylhexyl propoxylate is from 2 to 20 wt.-%. Also, invention relates to a method for preparing indicated mixture of alkoxylates wherein 2-ethylhexanol reacts with 1.6-3.3 mole of propylene oxide per a mole of 2-ethylhexanol in the presence of the propoxylation reaction catalyst at temperature from 110°C to 130°C at the first step wherein all amount of propylene oxide reacts. Then prepared mixture of propoxylates or mixture of propoxylates prepared after removal of unreacted 2-ethylhexanol is subjected for interaction at the second step with 3.0-5.5 moles of ethylene oxide per mole of 2-ethylhexanol in the presence of the ethoxylation reaction catalyst at temperature from 60°C to 180°C. Mixture of alkoxylates represents a good cleansing, surface-active substance and a moistening agent and can be easily biodegraded. ^ EFFECT: improved and valuable properties of mixture. ^ 9 cl, 3 tbl, 5 ex |
