Abstract: A high moisturizing silicone wax was synthesized with hydrogen-terminated silicone oil and 1-octadecene as starting materials.Effects of molar ratio of the reactants,reaction temperature and reaction time on conversion were examined by single factor test and orthogonal test.Structure of the product was characterized by infrared spectrum,and its moisturizing capacity were studied.The experimental results show that reaction temperature displays great influence on the reaction conversion,and the optimum reaction conditions are as follows:n(terminal hydrogen containing silicone oil)∶n(1-octadecene)=1∶24;reaction temperature,125 ℃;reaction time,5 h.Under such optimum reaction conditions,the conversion rate reaches 92.87%.Then the infrared spectrum shows that the synthetic compound produced is the targeted product.Comparison with respect to the moisturizing capacity between the targeted product and traditional silicone wax product purchased from the market was made.Result shows that the targeted product displays better moisturizing efficacy.

Key words: cosmetic additives, silicone wax, synthesis, moisturizing