聚合的

Withbimetallic μ-oxo alkoxide as initiator, the homopolymerization of MG follows atypical living process.

以双金属烷氧化合物为引发剂，MG单体的聚合遵循经典的活性聚合过程。

The results showed that in this system, the relatively low temperature(70℃) was required in order to avoid the side reaction and to carry out the living anionic polymerization of MMA.

结果表明，本实验体系中，在较低温度下(-70℃以下)才能有效地避免聚合过程中发生的副反应，实现MMA的活性阴离子聚合。

An acrylic resin was synthesized by the radical copolymerization with methyl methacrylate, butyl acrylate and methacrylic acid monomers in solution using benzoperoxide as initiator. Appropriate parameters of monomer ratio, monomer concentration, solvent, and reaction temperature were found by experiment.

以过氧化二苯甲酰为引发剂，采用溶液聚合合成了甲基丙烯酸甲酯-丙烯酸丁酯-甲基丙烯酸树脂，通过实验确定了自由基共聚合适宜的单体配比、单体浓度、引发剂浓度、溶剂以及反应的升温速度。

The experimental results show that using the feed technique of "starved state" can raise the conversion ratio of monomers, shorten the reactive time and get polymers with much more even distribution of molecular weight; the technique of adding azobisisobutyronitrile as an initiator first and then benzoperoxide as another initiator at later Stage of experiment can get higher initiating efficiency than using one initiator only.

结果表明：采用&饥饿态&聚合工艺可提高单体转化率，缩短反应时间，且所得到聚合物相对分子质量分布均匀；选用偶氮二异丁腈和过氧化笨甲酰两种引发剂进行复配，比选用单一引发剂的引发效果好；选用酯酸丁酯、正丁醇和丙二醇甲醚丙酸酯作混合溶剂，当配比为2：1：1时聚合体系稳定，聚合物的固体质量分数可达70%，且粘度适中。

In combination with Ni_2 as phosphate scavenger, binuclear nickel complex displayed high catalytic activity for the polymerization of ethylene.

以Ni_2为瞵攫取剂，该双核中性水杨醛亚胺镍化合物对乙烯聚合显示出较高的催化活性，并考察了聚合反应条件对其催化性能的影响。

According to the study on the polymerization catalyst,analysis of XRD and bromic bond,the condition of the polymerization process was further studied.

并根据新型聚合催化剂的研究和XRD、溴价分析，对聚合反应的工艺条件进行了考察。

The explanation for this is that ethylene oligomerized in the Ni catalyst active site and the oligomers containing vinyl end group served as comonomers to in situ copolymerize with the growing polyethylene chain in the active site of titanium catalyst.

催化剂的摩尔比、Al/摩尔比和聚合温度等聚合条件对催化活性及聚合物的结构与性能有明显影响。

The curing process of the resin system was analyzed by FTIR. The result of study was showed that BMI auto polymerization, BCE since auto polymerization, BCE copolymerizing with BMI, BCE with EP copolymerize reacting etc. existing in the curing process.

用FTIR对树脂的固化进行跟踪分析，研究结果表明，体系的固化反应中包含BMI自聚合反应、BCE自聚合反应、BCE与BMI共聚反应、BCE与EP共聚反应等。

Butadiene was polymerized to some extent in the presence of binary catalyst system NdCl33iPrOHAlEt3 in toluene and the allylchloride was then added to the solution in order to cyclize the formed polybutadiene and cyclopolymerize the unreacted butadiene monomers.

采用NdCl3·3i－PrOH－AlEt3稀土催化剂进行丁二烯的顺式聚合，在聚合过程中引入烯丙基氯，进行分子内环化反应以及单体的环聚反应。

Two monomers,bispmpargyl ether of bisphenol-Aand 4,4'-biphenyl dibenzyl azide were synthesized and characterized with FT-IR,1H-NMR and elementary analysis.

合成了两种单体双酚A二炔丙基醚与4，4′-联苯二苄叠氮，研究了一种新的低温聚合体系——双酚A二炔丙基醚与4，4′-联苯二苄叠氮在烘箱中的本体聚合行为。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐