A novel polyester thioure microcapsule was prepared using interracial polymerization with 1, 4 - benzenedicarbonyl diisothiocyanate and o - phenylenediamine. the influence of emulsifying agent, stirring speed and drug content on microcapsule performance were investigated
摘要以對
苯二甲酰異硫
氰酸酯與鄰
苯二胺為原料,通過界面聚合法合成了一種新型聚硫脲微膠囊,考察了攪拌速率、乳
化劑用量、投藥量等因素對微膠囊粒徑及釋放性能的影響。
Methods for chemical analysis of molybdenum - the tetraphenyl arsonium chloride hydrochloride - thiocyanate photometric method for the determination of tungsten content
鉬
化學分析方法四
苯砷氯鹽酸鹽-硫
氰酸鹽光度法測定鎢量
( iso ) thiocyanate method is also called schlack - kumpf degradation. we spend much time on the derivatizing reagent which is extremely crucial to this method. four derivatizing reagents that seemed theoretically practical have been introduced, after thoroughly invest igation of them, two of which are practical and can derivatizing the amino acids to their corresponding thiohydantoins : ( 1 ) tributylsilyl isothiocyanate ( tbus - itc ) ; ( 2 ) triphenylgermanium isothiocyanate ( tpge - itc )
(異)硫氰酸法又稱為schlack - kumpf降解,本文在關鍵的偶聯試劑方面進行了不懈的努力,先後對理論上有可能成為偶聯試劑的四種化學試劑進行了摸索,最後確定了其中兩種是可行的: ( 1 )三丁基硅異硫氰酸酯( tbus - itc ) ; ( 2 )三苯基鍺異硫氰酸酯( tpge - itc ) 。