Two magnetic triphase catalysts of comb-like polyethers supported by γ-Fe2O3 were synthesized, and their catalytic behaviors in the iodo-substitution, etherization and the addition reaction of dichlo-rocarbene to styrene were also investigated.
以表面经偶联剂修饰的γ-Fe2O3为载体,通过聚[β-氯乙基缩水甘油醚]分别与乙二醇单甲醚和一缩二乙二醇单甲醚的醇钠盐反应,合成了两种磁性梳状聚醚三相相转移催化剂,研究了它们在碘代、二氯卡宾对双键加成和混合醚制备反应中的催化活性。
Two triphase catalysts of comb-like polyethers supported by silicas were synthesized,and their catalytic behavior in the iodo-substitution,etherization and the addition reaction of dichlorocarbene to styrene were also studied.
以表面经偶联剂修饰的二氧化硅为载体 ,通过聚 (β-氯乙基缩水甘油醚 )和醇钠反应 ,合成了两种梳状聚醚三相转移催化剂 ,研究了它们在碘代、二氯卡宾对双键加成和混合醚制备反应中的催化活性。
An effective method to detect the size and shape of the pectination object is introduced.
通过公式可以快速地计算出梳状体的齿宽和齿间距。
Biocompatible and multifunctional comblike polymer(PMAO-PEGME) was synthesized by(using) poly(ethylene glycol)methyl ether as the side chain,poly(maleic anhydride-alt-1-octadecene) as the backbone.
以聚乙二醇单甲醚(PEGME)为侧链,马来酸酐/1-十八碳烯交替共聚物(PMAO)为骨架,制备出具有生物相容性的多功能梳状聚合物(PMAO-PEGME)。
Refined product was amorphous comblike polymer.
结果表明 :反应严格按照反应方程进行 ,精制产物是非晶的梳状聚合物。
The comblike polymers based on ethylenemaleamic anhydride copolymer backbone and oligooxyethylene were synthesized according to our method.
产物的成膜性能好，比较柔软，是研究梳状聚合物的离子运动和导电性的理想材料。