1)oligomerization低聚
1.Study of Isoprene Oligomerization in TiCl_4-Al (C_2H_5)_2Cl-Al(C_2H_5)Cl_2 Catalyst System;钛系复合催化体系中异戊二烯低聚的研究
2.A novel solvent-controlled chemoselective palladium-catalyzed oligomerization of tert-butyl acetylene was reported in this paper.报道了溶剂对钯催化的叔丁基乙炔低聚反应化学选择性的调控作用。
3.Catalyzed by palladium complex, the oligomerization processes of acetylenes occured to give the corresponding polysubstituted benzene derivatives or coupling compounds.报道了不同取代炔在钯络合物催化下发生低聚反应生成芳环衍生物或偶联产物,探讨了反应立体选择性及收率,反应催化、溶剂体系,炔化合物取代因素,反应时间、温度及可能机理。
英文短句/例句
1.Studies on the Preparation of Polyvinyl Alcohol with Low Degree of Polymerization and Low Degree of Alcoholysis;低聚合度低醇解度聚乙烯醇的制备研究
2.Study of Soy Oligosaccharides and Soy Oligopeptides on Blood Lipid Regulation in Rats;大豆低聚糖和低聚肽调节大鼠血脂作用的研究
3.polymeric glycol聚合二醇、低聚（物）二醇、大分子二醇
4.Study on Preparation of Chitooligosaccharide by Photocatalysis and Cellulase;光催化和酶法制备低聚壳聚糖的研究
5.Studies on Production of Xylooligosaccharides from Corncob with Xylanase;酶法水解玉米芯木聚糖制备低聚木糖
6.Preparation and performance of low-molecular weight N, O-carboxymethyl-chitosan低聚N,O-羧甲基壳聚糖的制备与性能
7.Isolation of galacto-oligosaccharide by filtration葡聚糖凝胶过滤层析分离低聚半乳糖
8.The Research on Effects of Polymerization Conditions on the Content of PET Oligomer Using Orthogonal Method正交法研究聚合工艺对聚酯低聚物含量的影响
9.A myriad of co-oligomers is possible: epoxy, urethane, polyester, polyether, amine and combinations are available.它具有多种改性低聚体：环氧类、聚氨酯类、聚酯类、聚醚类和胺改性的。
10.Studies on the function characteristics of modified soybean oligosaccharides and the applications of soybean oligosaccharides in Foods;改性大豆低聚糖功能性的研究及大豆低聚糖在食品中的应用
11.Effects of Chitosan Treatment on Thylakoid Membrane Characters Characteristics in Rice Seedling Under Low Temperature低聚壳聚糖处理对低温胁迫下水稻幼苗类囊体膜特性的影响
12.A polymer that consists of two, three, or four monomers.低聚体由二个、三个或四个单体构成的聚体
13.The low-molecular-weight water-soluble chitosans exhibit many unique biological activities.低聚水溶性壳聚糖具有许多独特的生理活性。
14.Study on Oligomers Problem during Dyeing and Processing Polyester Textile Material;聚酯纤维染整加工中低聚物问题的研究
15.An Experimental Study on Lowing the Cost of Polymer Flodding by Applying High-hydrolysis-Polymer;利用高水解聚合物降低聚驱成本试验研究
16.Theoretical Investigations on the Optoelectronic Properties of Organic Oligomer Complexes and Polymer;有机低聚物和高聚物光电性质的理论研究
17.Synthesis of Low Polymerization Degree PVAc and the Rheologic Features of Reaction Liquid;低聚合度聚醋酸乙烯合成与反应液流变特性
18.Progress in the production methods of chitosan and oligo-chitosan;壳聚糖及其低聚物制备方法的研究进展
相关短句/例句
oligochitosan低聚壳聚糖
1.Progress of study on preparation of oligochitosan and chitobiose by degrading chitosan;壳聚糖降解制备低聚壳聚糖和壳寡糖的研究进展
2.The use of element analysis、infrared spectroscopy and x-ray diffraction for characterization of oligochitosan are examined,it was found that,comparing with raw material,both the degree of deacetylation and nitrogen content of oligochitosan prepared by radiation degradation were remarkably increased.采用元素分析法、红外光谱法和X射线衍射法对制备的辐解低聚壳聚糖和外购的酶解低聚壳聚糖进行了分析,发现采用液态辐解法所制备寡糖样品的氮元素含量和脱乙酰度与原料相比都有明显增加。
3.The oligochitosan with molecular mass about 5000 was obtained by cellulase depolymerization with membrane technology within 5 h and the recovery rate .研究纤维素酶降解结合膜法制备低聚壳聚糖。
3)chitooligosaccharide低聚壳聚糖
1.Preparation and anticancer activity of chitooligosaccharide porphyrins metallic complexes;低聚壳聚糖金属卟啉络合物的制备及抗肿瘤细胞活性研究
2.Study on Preparation of Chitooligosaccharide by Photocatalysis and Cellulase;光催化和酶法制备低聚壳聚糖的研究
3.Study on the Chitooligosaccharide on Rice低聚壳聚糖在水稻上的应用研究
4)low molecular weight chitosan低聚壳聚糖
1.Effect of Mn (Ⅱ) on the degradation preparation of low molecular weight chitosan from chitosan;Mn(Ⅱ)对壳聚糖降解制备低聚壳聚糖的影响
2.The O ·- 2 scavenging activity of low molecular weight chitosan(LMC) and its complexes with Cu(Ⅱ), Co(Ⅱ), La(Ⅲ) was investigated.以 NBT/VB2 /蛋氨酸为 O· - 2 产生、检测体系 ,对自制低聚壳聚糖及其金属配合物进行了抗 O· - 2 活性研究 ,结果显示低聚壳聚糖及其金属配合物对 O· - 2 均具有明显的清除活性 。
3.Molecular weight of water soluble low molecular weight chitosan was determinated by GFC.红外光谱测试和理化实验结果表明，Ｃａ２＋与水溶性低聚壳聚糖发生了络合，络合反应的最佳条件是：温度２５℃，ｐＨ值９～１１，反应时间１５分钟。
5)low-molecular-weight chitosan低聚壳聚糖
1.The motivation for intending low-molecular-weight chitosan,the molecular of viscosity average was 1.00×104的低聚壳聚糖,模型优化所得的较优工艺参数:质量分数为4。
6)oligomer polysulfone聚砜低聚物
延伸阅读
低聚分子式：CAS号：性质：制取分子量低于1万的聚合物的方法。该方法的特点是要严格控制反应物的配比、温度、催化利用量以及反应时间等因素。如低发泡聚氨酯中的聚酯或聚醚，未固化前的环氧树脂、不饱和聚酯、甲阶段的酚醛树脂都是采用低聚法制造的。
