MBTOMalignant Biliary Tract Obstruction
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Figure 10 shows the correlation between extent of reaction and time at various concentration of MBTO and DBTO as a catalyst in the direct-esterification.
The results of direct-esterification of SA and BD at 170-190 [degrees] C in the presence of MBTO as a catalyst are shown in Fig.
An appropriate mixture of SA and BD and MBTO as a catalyst was introduced into the reaction vessel in order to obtain bis(4-hydroxybutyl) succinate (BHBS) oligomer.