In this paper，n-octanol was used as raw material to synthesize isomeric cetylalcohol by the Guerbet reaction，with hydroxyl value 222 mgKOH/g，which was adducted with 7 molecules of ethylene oxides at the presence of alkali，forming the isomeric cetyl polyoxyeth. ylene ether（C16H33O（CH2CH2O）7 H），which was then reacted with sulfamic acid to prepare anisomeric cetyl polyoxyethylene ether sulfate. The optimum process conditions were：the mol ratio of alcohol ether and sulfamic acid is 1∶1. 35；the reaction temperature is 100 ℃；the reaction time is 3 h；the content of urea is 3% based on the total weight. The surface tension in the aqueous solu.tion was measured to be 28. 17 mN/m，CMC 0. 35 g/L，and the time required for the lower layerto separate 10 mL of water from the product after mixing with the liquid paraffin was 330 s. Thesurface tension of similar imported product in the market was 31. 79 mN / m and CMC 0. 31 g/L，and the emulsifying performance is 184 s. Finally，the emulsifier was used in the sty.rene-acrylic emulsion polymerization.The experiment results showed that the emulsifier with16 carbon chain and 7 ethoxy groups was most suitable for emulsion polymerization.The emul.sifier dosage was 0.45%，and the particle size was 208.8nm.The water absorption rate was10.09%.The styrene-acrylic emulsion particle size of the imported product was 208.8 nm and its water absorption rate of 10.77%.The results showed that the performance of the homemadeemulsifier was better than imported products.
CHEN De-Qi
,
HUANG Wan-Zhu
,
JI Yong-Xin
. Preparation and Application of Isomeric Cetyl Alcohol Ether Ammonium Sulfate[J]. Paint & Coatings Industry, 2019
, 49(10)
: 8
-14
.
DOI: 10.12020/j.issn.0253-4312.2019.10.8
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