stannous oxalate的意思|示意

It is found that in the presence of butyl titanate or stannous oxalate as a polycondensation catalyst the carboxyl content is not always on the increase in all high vacuum stage.

发现，钛酸四丁酯或草酸亚锡作为缩聚催化剂时，在整个高真空阶段羧基含量并不是一直增加的。

A comparison has been made between systems of stannous oxalate and antimony trioxide, the result shows the former has a bright future as a polycondensation catalyst in practical production.

与酚类抗氧剂一起作为复合稳定剂，效果更佳。较好的草酸亚锡体系与实用的三氧化二锑体系的比较，表明在实际生产中草酸亚锡作为缩聚催化剂是很有前途的。