... vinyl chloride fibers氯乙烯纤维 vinyl chloroacetate氯化醋酸乙烯 vinyl chlorodifluoroacetate一氯二氟醋酸乙烯 ...
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采用聚苯乙烯负载三氯化铝为催化剂，对醋酸和苄醇的酯化反应进行了研究。
The direct esterification of acetic acid with benzyl alcohol by use of polystyrene supported aluminium trichloride as the catalyst.
考察含药层促渗聚合物、乳糖用量、助推层聚氧乙烯用量、助推层氯化钠用量及包衣液中含水量、醋酸纤维素浓度对释放度的影响，并对处方进行优化。
Effects of formulation of drug layer, push layer and membrane on the release behavior of controlled release tablets were investigated and the optimal formulation was obtained.
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