The ring-opening polymerization mechanism of lactide in the presence of hydroxyl compounds was studied by using ferric ethoxide and ferric n-butoxide as catalysts respectively.

这表明在含羟基化合物的丙交/醇铁聚合体系中,羟基化合物作为共引发剂参与了丙交的环聚合。

Synthesis of isoamyl formate, isoamyl acetate, isoamyl propionate, isoamyl butyrate, isoamyl isobutyrate and isoamyl isovalerate by catalysis of hydrated ferric chloride are reported.

研究了氯化铁催化合成甲酸戊、乙酸戊、丙酸戊、丁酸戊、丁酸戊戊酸戊。

The results shows that polyphosphate ferric sulfate is suitable to decontamination for sulfate, COD turbidness etc. in the wastewater.

表明,聚合磷硫酸铁对废水中硫化物、COD、悬浮物及浊度等均具有较佳的去除效率。

At present cultivates the first batch breast milk ferric albuminate iron albuminate transgene cow entered the lactation period.

目前培育的首批人乳铁蛋白转基因奶牛已进入泌乳期。