直接酯化法反应时间长，产率低。
Direct esterification will take long reaction time with low yield.
对酯化用气相热载体系统进行了改造。
The gas phase heat carrier system used in esterification process was modified.
多数情况下水解速度较酯化速度低得多。
The rate of hydrolysis. is. for the most part significantly lower than the esterification rate.
本发明涉及内酯化合物、合成方法及用途。
The present invention relates to lactone compound, synthesis method and application.
采用E10低温开环酯化合成低酸值树脂。
Low acid value resins were synthesized by E10 with low temperature ring opening.
十二（碳）酸乙酯酯化产率可达到90.1%。
当采用釜式间歇甲酯化反应时，浓硫酸为适宜的催化剂。
When a stirred tank batch process is used, the appropriate catalyst is sulphuric acid.
探讨了PET酯化、聚合生产过程对熔体直接纺丝的影响。
The effect of PET production on melt direct-spinning is discussed .
选择了最佳反应条件，重复反应酯化率达到95 %以上。
The best reaction condition was selected and repeated. The best conversion is over 95%.
利用固定床反应器，以固体酸为催化剂催化桐油预酯化反应。
Pre-esterification of China wood oil catalyzed by solid acid in fixed bed reactor was researched.
通过正交实验考察了反应时间、反应温度对聚乙烯醇酯化程度的影响。
The influence of reaction temperature and reaction time on degree of esterification were investigated.
该工艺合成的蔗糖多酯平均酯化度为6．5以上，产品得率达90％ 以上。
The average ester degree is 6.5 and yields are greater than 90%.
该工艺合成的蔗糖多酯平均酯化度为6．5以上，产品得率达90％ 以上。
The average ester degree is 6.5 and yields are greater than 90%.
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