Preparation method of secondary alcohol surface active agents

Abstract

This invention relates to the preparation method of secondary alcohol surface active agents, which are obtained through two-step alkoxylation of secondary alcohols with diol content of 0.5%-5%. The said secondary alcohols are prepared by the following method. N-alkanes and boron oxygen compounds are added to a reactor for oxidation reaction, after which they are separated through flash distillation and treated by alkali before distillation process during which the secondary alcohols containing 0.5%-5% diols (formed in the oxidation process) are extracted from the top of the column. Diols accounting for 0.5%-5% of the total amount of secondary alcohols are used in this invention as the raw material to significantly improve pour point, gel range and emulsifying power of the final nonionic surface active agent products without affecting their color and odor.

Dependencies are inferred from the claim text.