free anhydride 中文意思是什麼
free anhydride
解釋
游離酐-
A variety of aldehydes were converted into acylals in good yields with anhydride in the presence of a catalytic amount of zinc bromide under solvent - free conditions
以醛和酸酐為原料，溴化鋅為催化劑，無溶劑條件下高產率地合成了偕二酸酯（其中醛與苯甲酸酐的反應是首次報道） 。 -
All of 19 amino acid thiohydantoins were synthesized by using free amino acids as starting materials, acetic anhydride as the carboxyl group activating reagent and tms - itc as the derivatizing reagent. the proiine thiohydantoin was prepared by using ammonium thiocyanate ( n114scn ) as the derivatizing reagent
本文以l -氨基酸為原料，採用乙酸酐作活化試劑， tms - itc作為偶聯試劑，制備了19種th - aa ，另外th - pro的制備是用nh _ 4scn作為偶聯試劑獲得成功的。 -
Determination of free acid in acid anhydride - based hardeners for epoxide resins
環氧樹脂用酸酐基硬化劑中游離酸的測定 -
Plastics - hardeners and accelerators for epoxide resins - determination of free acid in acid anhydride
塑料.環氧樹脂用固化劑和促進劑.酸酐中游離酸測定 -
En iso 7327 plastics. hardeners and accelerators for epoxide resins. determination of free acid in acid anhydride
塑料.環氧樹脂硬化劑和促凝劑.酸酐中游離酸的測定 -
Plastics - hardeners and accelerators for epoxide resins - determination of free acid in acid anhydride iso 7327 : 1994 ; german version en iso 7327 : 1997
塑料.環氧樹脂固化劑和催化劑.酸酐中游離酸測定
分享友人