Study Of The Fatty Acid Amide Wax

Firstly, In this study, with ethylene diamine and stearic acid as raw material, ethylene bistearamide were prepared by adding antioxidant to solve the problem of yellow color, at normal pressure. Experimental results showed that the optimum technology condition were as follows:n(stearic acid):n(Ethylenediamine)=1:0.56; the temperature and rang of time of ethylenediamine dropping were 100℃and 40 min; the optimum temperature and reaction time were 204℃and 4.5h; phosphoric acid as the catalyst for the dosage of the quality of the stearic acid 0.5%; antioxidant for the dosage of the quality of the stearic acid 0.4%. Antioxidant can significantly improve the color of product.Secondly, with stearic acid and diethylenetrianmine as raw materials, the amide wax was prepared using catalytic synthesis reaction by adding additives, which was used as the surface slow release agent of fertilizer. Experimental results showed that the optimum technology conditions were as follows:n(stearic acid):n(diethylenetriamine)=1:1.05, the reaction temperature 145℃, the reaction time about 2.5h,0.5% of mass percent of the catalyst,0.5% of mass percent of both the additive and antioxidant. In these conditions, the color of product was white, the acid number was 5.13mgKOH/g, the dropping point was 81℃, the penetration degree was 2.2(0.1mm), and the amine value was about 143.42mgKOH/g. The feedback information of users showed that the product can substitute for foreign like products and the price of the product is lower than the prices of foreign like products.Finally, with stearic acid and diethanolamine as raw materials, the alkanolamide wax was prepared according to two steps and catalytic synthesis. Experimental results showed that the optimum technology conditions were as follows:the first step n(stearic acid): n(diethanolamine)=1:0.45 and the second step n(stearic acid):n(diethanolamine)=1:0.65; The first step reaction time was 4.5h and the second step reaction time was 4h also;the first step reaction temperature was 175℃and the second reaction temperature was 105℃;The amount of catalyst is 0.5% of stearic acid, In this condition, the color of the product was light yellow,acid value was 2.16mgKOH/g and amine number was 27.56 mgKOH/g, dropping point was 52℃and the penetration degree was 15.37(0.1mm).