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With toluene two isocyanogen diethylene glycol dinitrate, the polyester or the polyether dihydroxy alcohol, two methylol propionic acid, the triethylamine, the ethylene diamine and so on are raw materials, uses the prepolymer dispersion method, has prepared a series of anion river character polyurethane emulsion.

用甲苯二异氰酸酯、聚酯或聚醚二元醇、二羟甲基丙酸、三乙胺、乙二胺等为原料,采用预聚物分散法,制备了一系列的阴离子水性聚氨酯乳液。

A series of polyether based polyurethaneurea aqueous dispersions with well-defined hard segments were prepared by fractional steps with polyether polyol, 4,4'-diphenylmethane diisocyanate, dimethylolpropionic acid, 1,4-butanediol, isophorone diisocyanate and ethylenediamine.

以二苯基甲烷二异氰酸酯、二羟甲基丙酸、1,4-丁二醇、异佛尔酮二异氰酸酯和乙二胺为硬段,聚醚多元醇为软段,通过分子设计采用分步合成法,制备了具有规整硬段和良好分散性能的聚醚型聚氨酯脲水分散液。

A series of polyether based polyurethaneurea aqueous dispersions with well-defined hard segment s were prepared by fractional steps with polyether polyol, 4,4′-diphenylmethane diisocyanate,dimethylolpropionic acid,1,4-butanediol,isophorone diisocyanate and ethylenediamine.

以二苯基甲烷二异氰酸酯、二羟甲基丙酸、1,4-丁二醇、异佛尔酮二异氰酸酯和乙二胺为硬段,聚醚多元醇为软段,通过分子设计采用分步合成法,制备了具有规整硬段和良好分散性能的聚醚型聚氨酯脲水分散液。

The structural classes included diterpene, sesquiterpenes, steroids, steroidal glycosides, ceramides and so on.

这些化合物的结构类型包括二萜、倍半萜、甾醇、甾醇糖苷及神经酰胺等。

To further extend the scope of this type Cannizzaro disproportionation reaction and the reactivity of enolate ligand in complex with aldehyde,we designed to synthesis new rare earth complexes containing arylamido and.enolate mixed ligands,studied their reactivity with aromatic aldehydes for the disproportionation reaction.

为了进一步探索这种歧化反应的应用范围及配合物中作为配体的乙烯醇基与醛的反应性,我们设计合成了含胺基、乙烯醇基混合配体的新型稀土配合物,并研究了其与芳香醛的反应。

Thirdly,in the view of some different results between the reaction of complexes(2)、(3)and[(Me_3Si)_2N]_3LnLi_3 with aromatic aldehydes, the reaction of 2 equiv of aromatic aldehydes with 1 equiv of lithium amide(1) catalyzed by the YCl_3 was subsequently studied,and better yields of the corresponding amides and alcohols can be isolated.These results indicated that the enolate ligand in complexes(2)、(3)may have impact on the Cannizzaro disproportionation reaction.

第三,鉴于上述配合物2、3和[(Me_3Si_2)2_N]_3LnLi_3与芳香醛反应结果上的一些差别,我们又以三氯化钇为催化剂,将两当量的芳香醛与一当量化合物1的锂盐直接进行反应,结果以较好的产率得到了相应的酰胺和醇,这说明配合物2、3中所含的乙烯醇基可能对此Cannizzaro-型歧化反应存在一定的影响。

The pegylated polylactide-poly glycolide nanoparticle, whose surface was co-modified withmaleimide-polyethylene glycol and methoxy-polyethylene glycol, was made by double-emulsion and solvent evaporation method andcovalently conjugated with thiolated lactoferrin via its maleimide functionalgroup.

第一章首先由复乳/溶媒蒸发法制备马来酰亚胺—聚乙二醇(Maleimide-PEG,MAL-PEG)和甲氧基聚乙二醇表面共修饰的聚乳酸-聚羟基乙酸纳米粒,然后通过其表面MAL-PEG与巯基化Lf共价连接而制备Lf-NP_。

Examples of monomers which have on average not less than 3 cross-linking groups per molecule include for example tri, tetra, penta and hexa functional isocyanates, alcohols, amines, epoxys,acrylates, siloxanes and imines.

其中的单体平均不超过3交叉连接不到每分子团体有例子包括,例如三,四,五溴和六功能异氰酸酯,醇,胺,epoxys,丙烯酸酯,硅氧烷和亚胺。

In the polymerization procedure,S--α-phenyl ethylamine was used as target template molecules,methacrylic acid was selected as functional monomers, ethylene glycol dimethacrylate or divinylbenzene as crosslinker, azobisisobutyronitrile or benzophenone was used as irritator.

以S--α-苯乙胺为模板,甲基丙烯酸为功能单体,分别以二甲基丙烯酸乙二醇酯、二乙烯基苯为交联剂,偶氮二异丁睛或二苯甲酮为引发剂,采用了本体聚合法、悬浮聚合法合成了一系列的S--α-苯乙胺印迹聚合物。

The organic template N, N'-diisopropylethylenediamine is believed to be formed through a reaction between isopropylamine and the solvent ethylene glycol.

结构中的有机模板剂N,N'-二异丙基乙二胺被认为是在合成过程中由异丙胺和溶剂乙二醇分子通过脱水生成。

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