胺类促进剂 meaning in English

amine type accelerator

Peg and superfluous aa reaction by complete concatenation method , the esterify production " esterify water " and acid number were mensurated , it shows that the esterify reaction would be processed under 100 esterify temperature and with amine accelerantthe tide of esterify reaction was substantiated by ir . in the ir spectrum , the characteristic peak of hydroxy of peg and carboxyl of aa were weakened . and the ester link of peg was reinforce . the " esterify water " was increased gradually and the acid number of esterify production was debased gradually along with the extent of esterify time and the augmentation of molecular weight of peg
通过聚乙二醇与过量的丙烯酸采用全连续法进行反应，测定酯化产物“酯化水”和酸值等宏观手段反映出在胺类促进剂、 100的酯化温度等条件下的酯化进程，而利用红外光谱( ir )分析所反映的聚乙二醇的羟基和丙烯酸的羧基特征峰减弱，而pea的酯基特征峰加强等特征进一步证实了宏观手段所表现出来的酯化趋势：随着酯化时间的延长和聚乙二醇分子量的增大，产生的“酯化水”逐渐增加，酯化产物的酸值逐渐降低；从酯化时间看，当反应时间达到300min时，酯化物的酸值达到最小，而从ir分析来看，酯化物pea4的羟基峰在300min时减弱到最小， pea23在120min时羟基峰的表现出酯化基本完全。