包含所述双核过渡金属化合物的催化剂组合物对于含有极性官能团的单体活性高。
A catalyst composition including the dinuclear transition metal compound is highly active for a monomer having a polar functional group.
原因应该是由于单体活性不足造成在反应体系中的积累,从而影响了对反应的控制。
The reason is that the reaction control is effected by the accumulation of the less monomer activity in the reaction system.
实验发现乙烯基磺酸酯类单体活性较低,与MMA和MAA单体聚合时不能很好的参与聚合反应。
Vinyl sulfonate monomers were experimentally found of lower reactivity and couldn't effectively copolymerize with MMA and MAA.
对原油及其馏分油中元素硫、硫化氢、硫醇硫、二硫化物、腐蚀性硫、总活性硫以及单体活性硫化合物的分析方法进行了综述。
The testing methods for element sulfur, hydrogen sulfide, mercaptan sulfur, bisulfide, corrosive sulfide, total active sulfur and single active sulfide were reviewed.
本论文首次利用NGF培养的PC12细胞做了H-1和H-2两个神经鞘苷化合物的单体活性试验,发现两个化合物均无明显的促进NGF生长活性、减少细胞凋亡及抗老年痴呆作用。
The trial about the resist senile dementia was carried out with PC12 cell cultured by NGF, results showed H-1 and H-2 have not obvious effects on promoting NGF growth activity and reducing cell death.
皂苷是三七中的主要活性成分,科学家已经从三七中分离得到了超过70种的单体皂苷。
Saponins are the main active ingredient, Modern studies have showed that more than 70 different kinds of saponins have been isolated and identified from Sanqi.
考察了活性单体、预聚体及偶联剂对紫外光固化胶粘剂的粘接强度、体积收缩的影响。
The effect of active monomers, oligomers and couple agent on shear strength and volume shrinkage of UV-curing adhesive was investigated.
引入活性单体和丙烯酸酯来改善聚合物的增稠性能和抗电解质性能。
Active monomer and acrylic esters were introduced to improve the thickening property and electrolyte resistance.
催化聚合活性随反应温度、催化剂用量和单体浓度的提高而提高。
The catalytic activity increased with increasing polymerization temperature, catalyst amount and monomer concentration.
介绍了光固化涂料体系几种重要组分:低聚物、活性稀释剂(单体)、光引发剂的研究进展。
The development of oligomer, active diluent(monomer), photoinitiator as major components of UV curing coatings system were described.
介绍了光引发剂及活性单体的研究进展,最后对光固化技术的发展趋势进行了展望。
Photoinitiator and reactive monomer were introduced and lastly the development directions of UV technology were viewed in this paper.
首先,合成出三种活性单体。
覆盖防氧膜、添加活性稀释性单体及延长曝光时间有利于其光交联反应的进行。
It is shown that overlaying oxygen barrier layer, appending active diluent monomer and prolonging exposure time are in favor of the photopolymerization of the product.
研究了聚合溶剂,单体浓度,反应温度以及配合物中稀土离子性质对催化活性和所得聚苯乙烯分子量的影响。
The effects of the solvent, monomer concentration, temperature and rare earth element on the polymerization and the molecular weight of polymer were investigated.
合成了驱油用接枝型聚丙烯酰胺聚合物,在合成该聚合物时引入了一种自主合成的活性单体。
A novel polymer for EOR was synthesized which was graft polyacrylamide, an active monomer was inserted into the polymer, which was synthesized independently.
结果表明,合适的活性单体和成膜剂以及坚膜剂可以显著的提高印版的耐水性,加热老化对印版的耐水性影响不大。
The results indicated that the suitable monomers and film former can improve this property remarkably, and the effect of heating is not very important.
该聚合物在合成中引入了一种自主合成的活性单体。
An active monomer was inserted into the polymer, which was synthesized independently.
根据这种观点,最活性单体将产生最少的反应激进,等等,因为它们的结构关系。
According to this view, the most reactive monomer will yield the least reactive radical, and so on, because of their structural relationship.
研究目的是分子设计并构建较G-CSF单体分子具有半衰期更长、生物活性更高的新型重组人G-CSF/G-CSF双体分子(简称G-G),并在原核系统进行高效表达。
Molecule design, construction and high level expression in E. coli. of bimolecular G-CSF with longer half life and higher bioactivities than single molecular G-CSF.
农学活性物质的微囊化悬浮液包含由淀粉和至少一种乙烯基单体的接枝共聚物形成的包封剂。
A microencapsulated suspension of agriculturally active material includes an encapsulating agent formed from a graft copolymer of starch and at least one vinyl monomer.
研究了以环氧丙烯酸酯、丙烯酸活性单体、光敏剂以及涂料助剂配制而成的紫外光固化纸张罩光涂料,并分析了影响涂料性能的几种主要因素。
An UV-curing paper finish coatings has been prepared based on epoxy acrylate, acrylic monomers, photosensitizer and additives. Factors influencing the coating properties are discussed.
介绍了耐水型光聚合丝印感光胶的制备方法,讨论了成膜剂、活性单体、阻聚剂等对感光胶感光成像性能的影响。
This article reports the preparation process of the photopolymer emulsion, and the effects of the monomer, film former and inhibitor on the photosensitivity and image forming property of the emulsion.
通过MTT法对单体化合物在犬血管平滑肌细胞模型上进行增殖抑制活性测试。
The purified compounds' inhibition against proliferation of dog vascular smooth muscle cells was also screened by MTT assay.
以环氧丙烯酸酯、活性稀释单体、光引发剂等为原料,制备UV固化涂层,对主要原料及固化后的涂层进行了热失质量分析。
The title UV curing coatings is prepared based on epoxy acrylate, reactive diluents and photoinitiator. The main raw materials and cured film are tested with TGA.
结果表明:光固化膜的力学性能好,表面能低,加入不同的活性单体,可以对膜的表面能进行调节;
The mechanical properties of the UVcuring membrane are good and surface energy is low while it is adjusted by adding different monomers.
研究了低聚物、活性稀释单体以及助剂对玻璃涂膜附着力的影响。
The influence of oligomers, active diluents and additives on the adhesion of UV curing (coatings) on glass has been studied.
该方法简便,产品质量高,一次制备可以得到多种单体,为芦荟成分的测定与药理活性的研究提供了条件。
The method was convenient, and active constituents with high purity could be obtained simultaneously, which provided conditions to investigate the constituents and their activities of Aloe vera.
在两种非离子单体中,其中一种是具有表面活性的非离子大单体,另一种是非离子单体丙烯酰胺。
For the two nonionic monomers, one of which is the nonionic large monomer provided with surface activity, the other one is nonionic monomer acrylamide.
研究了UV固化皮革涂饰剂的光引发剂、光活性单体、助剂与皮革力学性能及表观性能的关系,并对皮革表面微观性能及透气度进行了表征。
The relationship between the photoinitiator composition of the UV curable leather finishing agents, monomer, auxiliary agent and the apparent performances of coating film for leather was studied.
研究了UV固化皮革涂饰剂的光引发剂、光活性单体、助剂与皮革力学性能及表观性能的关系,并对皮革表面微观性能及透气度进行了表征。
The relationship between the photoinitiator composition of the UV curable leather finishing agents, monomer, auxiliary agent and the apparent performances of coating film for leather was studied.
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