Table 1.4 compares the boiling points of several alkyl ether that have permanent dipoles with those of hydrocarbons, which have no permanent dipoles.
表1.4对若干有永久偶极的烷基醚和没有永久偶极的烷烃的沸点作了比较。
The results showed that the terminated prepolymer was prepared by introducing ethylene glycol alkyl ether as a capping agent into the reaction system of castor oil and tolylene diisocyanate (TDI).
结果表明，采用蓖麻油与甲苯二异氰酸酯（TDI）反应，加入封端剂乙二醇烷基醚类，得到封端型聚氨酯预聚体。
The results showed that the terminated prepolymer was prepared by introducing ethylene glycol alkyl ether as a capping agent into the reaction system of castor oil and tolylene diisocyanate (TDI).
结果表明，采用蓖麻油与甲苯二异氰酸酯（TDI）反应，加入封端剂乙二醇烷基醚类，得到封端型聚氨酯预聚体。
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