StearaMide CAS 124-26-5 Octadecanamide

The prep work of stearic acid amide, the structure of raw materials by weight: 45 parts of stearic acid amide; 6 parts of emulsifier A; 14 parts of emulsifier B; 0.8 parts of defoamer; 0.5 parts of preservative; 60 parts of water. Explained defoamer selects polyoxyethylene polyoxypropanolamine ether for use; Described preservative chooses sodium dehydroacetate for use; Explained emulsifier A is chosen from sorbitan monolaurate; Defined emulsifier B is prepared by the following approach: (1) including thionyl chloride dropwise to 11-trans-octadecenoic acid, managing the reaction temperature to 55 ° C., and also mixing for 4 hours to obtain 11-trans-octadecenoic acid chloride; (2) Include sinapyl alcohol to acetone solution, after that add 11-trans-octadecenoic acid chloride, react at 35 ° C for 2h, as well as clean the item to obtain the emulsifier B; the 11-trans- The molar ratio of octadecenoic acid to thionyl chloride is 1:1.8; the molar proportion of sinapyl alcohol to 11-trans-octadecenoic acid chloride in step (2) is 1:10.

The preparation technique of water-based stearic acid amide: first add stearic acid amide as well as emulsifiers An and B right into water and mix for 60min (mixing rate is 2500r/min), then add defoamer and preservative as well as stir for 40min (mixing rate is 2500r/min)/ minutes) to obtain the defined aqueous stearic acid amide solution. The strong material of the ready liquid stearic acid amide emulsion was 41.7 wt%, and the thickness was 146mPa · S; the aqueous stearic acid amide solution was positioned under the condition of 20000r/min as well as centrifuged for 30min, no delamination sensation was seen; the liquid stearic acid amide solution When the stearic acid amide solution was placed at 20-35 ° C for 3 months, no flocculation as well as stratification happened.