Direct esterification will take long reaction time with low yield.
直接酯化法反应时间长，产率低。
This test proved that preparation of phosphoric ester is feasible by phosphoric acid direct esterification.
实验表明，磷酸直接酯化法制取磷酸辛酯是可行的。
The second part, synthesized L-AS by a direct esterification from L-ascorbic acid and stearic acid by lipase-catalyzed.
第二部分，用脂肪酶催化l -抗坏血酸与硬脂酸直接酯化合成L -AS。
The direct esterification of acetic acid with benzyl alcohol by use of polystyrene supported aluminium trichloride as the catalyst.
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 first part, synthesized L-AP by a direct esterification from L-ascorbic acid and palmitic acid by lipase-catalyzed int-butyl alcohol.
第一部分，脂肪酶在叔丁醇中催化l -抗坏血酸与棕榈酸直接酯化合成L - AP。
The factors effecting the melt direct esterification and normal solvent direct esterification of acrylic acid and octadecyl alcohol were investigated.
采用两种酯化方法制备了丙烯酸十八酯，研究了影响酯化反应的因素。
Experiment results indicated that HZ-type solid acids were ideal catalysts for direct esterification of straight chain carboxylic acids and primary alcohols.
试验表明HZ型固体酸是饱和直链羧酸和伯醇直接酯化的特效催化剂。
By using the direct esterification polycondensation method synthesized polytrimethylene terephthalate with higher characteristic viscosity and nucleating agent.
采用直接酯化缩聚路线合成了具有较高特性黏度、含成核剂的聚对苯二甲酸丙二醇酯（ PTT） 材料。
The direct application of recovered EG generated in polymerization plant stop running to esterification start-up was introduced.
介绍了聚酯装置停车所回收的EG在酯化开车中的直接应用。
A saturated hydroxy polyester resin has been prepared with polycarboxylic acid and polyol at the presence of catalyst and chain transfer agent by the direct melt esterification process.
在催化剂、链支化剂存在下多元酸和多元醇直接熔融酯化、常压缩聚合成饱和羟基聚酯。
A saturated hydroxy polyester resin has been prepared with polycarboxylic acid and polyol at the presence of catalyst and chain transfer agent by the direct melt esterification process.
在催化剂、链支化剂存在下多元酸和多元醇直接熔融酯化、常压缩聚合成饱和羟基聚酯。
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