Method for dispersing higher fatty alcohol mixture

Abstract

The invention discloses a method for dispersing a higher fatty alcohol mixture, which provides a method for dispersing a mixture of natural fatty alcohol and synthol into water, and belongs to the technical field of fine chemical preparations. A higher fatty alcohol emulsion prepared by the method contains the following components: (1) 1 to 30 percent of synthesized higher fatty alcohol with carbon number of between 14 and 30; (2) 1 to 15 percent of C12-18 saturated natural higher fatty alcohol; (3) 1 to 15 percent of paraffin; (4) 0.1 to 5 percent of non-ionic surfactant with MO(EO)m(PO)nH as a general formula; (5) 0.1 to 5 percent of one or more anionic surfactants selected from sulfonated ricinate, sulfonated fatty glyceride, alkyl sulfate, alkoxy sulfate, alkylaryl sulfonate and sodium polyoxyethylene alkyl ether sulfate; (6) 0.1 to 5 percent of thickening agent; and (7) 60 to 95 percent of dispersant (water), wherein M is an initiator group of the non-ionic surfactant, alkyl or an benzene ring. The method comprises the following realization steps that: (1) the synthesized higher fatty alcohol, the natural higher fatty alcohol, the paraffin, the non-ionic surfactant, and the anionic surfactants are mixed according to the proportion, and then the temperature is increased to be between 80 and 95 DEG C; (2) then the water with a temperature of between 60 and 80 DEG C is slowly added into the mixture to begin to emulsify, and the emulsification temperature is kept higher than 60 DEG C during the emulsification; (3) the obtained product passes through a colloid mill after the adding of hot water; and (4) finally the obtained product is cooled to be between 30 and 40 DEG C, then the thickening agent is added into the obtained product to be mixed evenly, thus the higher fatty alcohol emulsion is obtained.

Description

technical field [0001] A method for dispersing a mixture of higher fatty alcohols relates to a method for preparing a higher fatty alcohol emulsion, more precisely, a method for preparing a stable emulsion of a mixture of natural fatty alcohols and synthetic alcohols, which reduces the cost of preparing emulsions with synthetic fatty alcohols. Since the preparation of the mixture emulsion belongs to fine chemical additives, it belongs to the technical field of fine chemical preparations. technical background [0002] The invention introduces the preparation of a water-based fatty alcohol emulsion, which can be used as a defoamer and applied in papermaking, waste water treatment, construction industry, water-based paint, gypsum and other industrial fields. [0003] In some industrial processes, the presence or use of surface active substances has many positive effects, but also brings serious foaming problems. In the production process of coatings and paints, the high-speed ...

AI Technical Summary

Problems solved by technology

US5807502 introduces C 6-18 The reaction product of 1,2-diol and ethylene oxide addition is used as an emulsifier for emulsifying fatty alcohols. It is introduced that natural alcohols can be emulsified, but C in this method 6 -18 The price of 1,2-diol is very high, it is not easy to buy, and it is not suitable for industrial production

Therefore, the higher fatty alcohol emulsion prepared by these methods either involves too high raw material price, or the obtained emulsion is still unstable, and there is no fundamental solution to how to reduce the use cost of higher fatty alcohol and improve the stability of the emulsion

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