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阳离子聚合     
相关语句
  cationic polymerization
     The Mechanism of Chain Termination in the Cationic Polymerization of IBVE Initiated by Cl_2/TiCl_4/CH_2Cl_2 System
     IBVE/Cl_2/TiCl_4/CH_2Cl_2体系阳离子聚合链转移终止机理的研究
短句来源
     Living Cationic Polymerization of β -Pinene with 1-Phenylethyl Chloride/TiCl_4/Ti(OiPr)_4
     〆-氯代乙苯/TiCl_4/Ti(OiPr)_4引发β-蒎烯活性阳离子聚合
短句来源
     Me_3SiCl/EtAlCl_2 INITIATING SYSTEM FOR CATIONIC POLYMERIZATION OF 1,3-PENTADIENE
     1,3-戊二烯阳离子聚合引发体系(CH_3)_3SiCl/EtAlCl_2的研究
短句来源
     The Cationic Polymerization of α-Pinene with AlEt_2Cl/t-BuCl Catalyst
     AlEt_2Cl/t-BuCl引发α-蒎烯阳离子聚合
短句来源
     Cationic Polymerization of α Pinene Initiated by AlCl 3/SbCl 3 at Ambient Temperature
     常温下AlCl_3/SbCl_3引发α-蒎烯阳离子聚合
短句来源
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  cation polymerization
     Study on Cation Polymerization of Light Fraction from Destructive Distillation of Pine Roots
     松根轻油的阳离子聚合研究
短句来源
  “阳离子聚合”译为未确定词的双语例句
     Complex in Carbocationic Polymerization of BA/TiCl_4/IB/CH_2Cl_2 System
     BA/TiCl_4/IB/CH_2Cl_2阳离子聚合体系络合作用的研究
短句来源
     Complex in Carbocationic Polymerization of t-BuOAc/TiCl_4/IB/CH_2Cl_2 System
     t—BuOAc/TiCl_4/IB/CH_2Cl_2阳离子聚合体系络合作用的研究
短句来源
     The polymerization of p-methylstyrene was investigated in the PECl/SnCl 4/CH 2Cl 2/Bu 4N +Br - system.
     采用 PECl/ Sn Cl4 / CH2 Cl2 / Bu4 N+Br-/ - 15℃体系进行了对甲基苯乙烯阳离子聚合
短句来源
     Cationic polymerizations of 1,3-pentadiene (PD) were initiated by various Lewis acids such as AlCl_3 , BF_3 .OEt_2,AIBr_33 and TiCl_4 at 30℃ in n-hexane,methylene chloride and toluene respectively.
     以AlCl_3、BF_3·OEt_2、TiCl_4和AlBr_3等Lewis酸为引发剂,在不同溶剂中(正己烷、二氯甲烷、甲苯)于30℃引发1,3-戊二烯阳离子聚合
短句来源
     The role of E801 in the carbocationic polymerization of styrene is obtained through researches on the polymerization rule of E801 in the three different initiate system (TMPCl/TiCl4, DMTP/TiCl4 and H2O/TiCl4).
     研究了第三组分E801在苯乙烯可控阳离子聚合中的作用。 通过E801在TMPCl/TiCl_4,DMTP/TiCl_4,H_2O/TiCl_4三个不同引发体系中聚合规律的研究,得出了E801在苯乙烯阳离子聚合中的作用规律。
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  cationic polymerization
Synthesis of Petroleum Polymeric Resin by Cationic Polymerization of the C9 Fraction
      
Cationic polymerization of redox monomers derived from monoethanolamine vinyl ether and various quinones
      
Cationic polymerization of redox monomers derived from monoethanolamine vinyl ether and various chlorinated quinones in aqueous-organic solutions in the presence of HCl was studied.
      
Cationic polymerization of a derivative of allylamine and 1,2-naphthoquinone
      
Cationic polymerization of a monomer derived from allylamine and 1,2-naphthoquinone was studied by polarography.
      
更多          
  cation polymerization
The higher polymerizability of monomer 1 was discussed based on a radical-cation polymerization mechanism.
      
  cationic oligomerization
Cationic oligomerization and co-oligomerization of cholesteryl vinyl ether
      
Then, the eliminated hydrogen chloride initiates cationic oligomerization of 1-vinyl-4,5,6,7-tetrahydroindole, enriching the copolymer with units of this monomer.
      
Cationic oligomerization of disubstituted oxetanes promoted by trifluoroboron etherate in the presence of ethylene glycol was studied.
      
The cationic oligomerization of p-isopropyl-α-methylstyrene by CF3SO3H in dichloromethane has been investigated.
      
Cationic oligomerization of 3-methyl-1-butene catalyzed by BF3-protonic donor complexes
      
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  其他


1. In a wide pH range, the rate of gelation of silicic acid formed by the reaction of water glass with various acids was determined. The curve which expresses the relation between pH and log. of time of setting of silicic acid solution is N-shaped, having a maximum and a minimum, no matter what kind of acid was used to react with water glass. However, with different acids, the positions of the maximum and minimum points are different.

1.在较广的pH范围内,测定了硅酸胶凝的速度。表示pH和胶凝时间对数关系的曲线,其形状常为N字形,有一最高点和一最低点,不论所用酸的种类如何。不同的酸使曲线的最高点和最低点以及两者之间线段的部位显有区别。 2.硅酸离子随着溶液中外加酸浓度的增高而逐步与氢离子结合:H_2SiO_4→H_3SiO_4→H_4SiO_4→H_5SiO_4~+。硅酸由聚合而形成凝胶的作用,在酸方和在硷方的机构不同。在硷方是原硅酸与其一价阴离子的缩合作用,而在酸方则是原硅酸和其一价阳离子的聚合作用。 3.根据以上的机构,我们提出一个关系式可以说明硅酸的胶疑时间和pH的关系。

In the present paper the copolymerization of styrene and methyl-metha- crylate under γ-irradiation was investigated; the influence of temperature and solvent on the mechanism of copolymerization was also discussed. In bulk polymerization, free radical mechanism proceeds from-35℃ up to the room temperature; when copolymerization is carried out in ethyl bromide solution at-20℃ to-78℃, cationic and free radical mechanisms exist simultaneou- sly; by further lowering reaction temperature, cationic mechanism becomes...

In the present paper the copolymerization of styrene and methyl-metha- crylate under γ-irradiation was investigated; the influence of temperature and solvent on the mechanism of copolymerization was also discussed. In bulk polymerization, free radical mechanism proceeds from-35℃ up to the room temperature; when copolymerization is carried out in ethyl bromide solution at-20℃ to-78℃, cationic and free radical mechanisms exist simultaneou- sly; by further lowering reaction temperature, cationic mechanism becomes predominant. The reactivity ratios at different temperature were calculated both in bulk and in solution polymerization. The activation energy with respect to both bulk and solution polymerization and the difference in value of activation energy between homopolymerization and copolymerization were determined.

本文研究了苯乙烯与甲基丙烯酸甲酯γ辐射共聚合,探讨温度及溶剂对共聚历程的影响。得到在本体聚合时。在室温到 -35℃范围内按自由基历程共聚;在溴乙烷中,-20℃到-78℃温度范围内共聚时,阳离子、自由基历程并存,并随着温度降低阳离子聚合逐渐占优势。测定了该对单体在本体和溶液中共聚时不同温度下的竞聚率,求得了本体及溶液聚合时的活化能及自聚与共聚活化能之差值。

Poly (p-N, N-dimethylamino azobenzol glycidyl ether), a polyether-aromatic azo polymeric dye, was synthesized from p-N, N-dimethylamino aniline (Ⅰ) following the reactions as given:The characterization of the intermediate (Ⅱ), monomer (Ⅲ) and polymer dye (Ⅳ) were performed by elemental analysis, IR, 13C NMR, VIS-spectroscopy, laser light scattering and DSC. The polymer dye studied in this paper is soluble in stronger polar solvents (such as DMF) with Mw = 2.2×104 and soft point 90-95℃. The photosensitive image...

Poly (p-N, N-dimethylamino azobenzol glycidyl ether), a polyether-aromatic azo polymeric dye, was synthesized from p-N, N-dimethylamino aniline (Ⅰ) following the reactions as given:The characterization of the intermediate (Ⅱ), monomer (Ⅲ) and polymer dye (Ⅳ) were performed by elemental analysis, IR, 13C NMR, VIS-spectroscopy, laser light scattering and DSC. The polymer dye studied in this paper is soluble in stronger polar solvents (such as DMF) with Mw = 2.2×104 and soft point 90-95℃. The photosensitive image recording materials, which were made from the polymer dye with vinylidene chloride/methyl acrylate copolymers, were shown to have the image-forming behaviour under UV-irradiation. It is of particular interest that the polymer dyes can be fixed more strongly in the photosensitive layer.

芳香偶氮聚合物是一类新型的高分子染料。本工作从对-N,N-二甲基苯胺出发,经重氮化和偶联反应,再与环氧氯丙烷缩合制备单体,最后用阳离子聚合方法得到了聚醚型芳香偶氮高分子染料——聚(对-N,N-二甲氨基偶氮苯基)缩水甘油醚。用元素分析,红外光谱和~(13)C核磁共振确定了聚合物的结构,并测定了它的熔点,分子量等物理化学常数。 上述染料高分子与偏氯乙烯-丙烯酸甲酯共聚物组成光敏材料,测定了它的紫外感光特性。结果表明,高分子染料具有光敏成象性能,并能稳定地结合在光敏层内。

 
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