单体

A kind of new diamine monomer of modified polyimide with piperazine was synthesized, which has been used in the synthesis of modified polyimide by ternary copolymerization .

合成一种含哌嗪的芳香族二胺单体，将其用于聚酰亚胺的三元共聚中，并制成改性聚酰亚胺膜。

Molecularly imprinted polymer using quercetin as template molecules, methacrylic acid as functional monomers, ethylene glycol dimethacrylate as crosslinking agent were prepared, and the binding sites of MIP were selectively modified with diazomethane.The effects of template molecule concentration, solvent and diazomethane usage on modification were discussed.

以槲皮素为模板分子，甲基丙烯酸为功能单体，乙二醇二甲基丙烯酸酯为交联剂，制备了分子印迹聚合物，并以重氮甲烷为修饰剂，对MIP的结合点进行了选择性修饰，探讨了模板分子浓度、溶剂及重氮甲烷用量等对修饰效果的影响。

The production process for vinyl chloride is substituted that based on ethylene dichloride for ethine. It is forecasted that it will quickly increased for the demand of ethylene dichloride.

中国的氯乙烯单体生产方法正由乙炔法转换为二氯乙烷法，预计二氯乙烷的消费将有一个快速发展。

Methods 2-Methacryloyloxyethyl phosphorylcholine was prepared by the reaction of phosphorycholine dichloride with 2-hydroxyethyl methacrylate.

方法以三氯氧磷、氯化胆碱和甲基丙烯酸-2-羟乙基酯为原料，合成含PC基团的聚合单体-2-甲基丙烯酰氧乙基磷酰胆碱。

Product Description: diene propyl phthalate monomer with the development of petrochemical industry and produce new varieties, it has many excellent performance.

产品简介：邻苯二甲酸二烯丙酯单体是随着石油化学工业的发展而产生的新品种，它具有许多优良的性能。

Effective diffusivity of glucose in the polyacrylamide gel decreases with increasing of the total monomer concentration in the gel.

有效扩散系数随凝胶总单体浓度的增加而减小。

In this paper,the synthesis of Talc/PMMA graft copolymer is studied,and the apparent kinetic test conducted by dilatometer. The effects of the initiator's concentration, the monemor's content, the talc's content and the reaction temperature on polymerization rates were investigated,and the apparent activation energy was determined.

文章主要研究了滑石粉／PMMA接枝物的合成和表观动力学测试，采用膨胀计法研究了接枝聚合反应表观动力学，探讨了引发剂浓度、单体用量、无机微粒滑石粉用量及反应温度等对反应速率的影响，并且测定了反应的表观活化能。

The first stage is the elimination of water from two monomer molecules to produce a dimer.

第一步是两个单体分子之间折出水，生成二聚体。

The first stage is the elimination of water two monomer molecules to produce a dimer.

第二步是两个单体分子之间折出水，生成二聚体。

On the basis of the peak absorption values of the visible spectra of MB, the dimerization constants and the molar absorption coefficients of the monomer and the dimer of MB were calculated.

根据MB特征峰处的吸收光谱值，计算了MB的二聚平衡常数和相应单体、二聚体的摩尔消光系数。并用稳态荧光法和无外加探针的循环伏安法进一步论证了计算结果。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。