长期处理丙烷基硫尿嘧啶大鼠血浆皮质固酮及肾上腺皮质促素的浓度均偏低。
The concentrations of plasma corticosterone and ACTH were decreased by chronic administration of PTU.
本课题以蜜糖和十二烷基二甲基叔胺为原料，选择环氧氯丙烷作为季铵化反应的烷化剂。
This new synthesis method of humectants used honey and di-methyl-dodecyl amine as material to produce a quaternary surfactant.
本发明提供一种使双酚类和芳烷基酚醛树脂的混合物与环氧卤丙烷反 应得到的低粘度且高性能的变性液性环氧树脂。
Disclosed is a modified liquid epoxy resin having low viscosity and high performance, which is obtained by reacting a mixture of a bisphenol and a phenol aralkyl resin with an epihalohydrin.
以烷基酚、甲醛、环氧乙烷和环氧丙烷为原料，合成海洋原油用破乳剂。
以烷基酚、甲醛、环氧乙烷和环氧丙烷为原料，合成海洋原油用破乳剂。
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