一击既中
幼苗
共回答了18个问题采纳率:83.3% 举报
When dichloromethane is used as solvent,the softening point of resin is about 50 ℃ higher than using toluene.The highest softening point of the pentadiene resin produced is 139 ℃,Currently,it is the highest reported softening point.The softening point of resin goes up as the reaction temperature increases,and it drops as the amount of catalyst increases.
1年前
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