Studies on the atom transfer radical copolymerization of vinyl monomer and vinyl monomer containing nitroxide group

乙烯基单体与含氮氧稳定自由 基单体的原子转移自由基共聚合研究

The derivatives of 3-N-substituted and other 3-substituted methyl pyropheophorbide - α were synthesized by modification of vinyl group at 3-position of 2.The structures of all new compounds were characterized by ( ~ 1H NMR ) IR MS and elemental analysis .

通过对2的3- 乙烯 基的修饰，获得了 3-N-取代类衍生物。新化合物的结构均经1HNMR，IR，MS及元素分析确证。

A thermoplastic derived by polymerization from compounds containing the vinyl group .

一种热塑性塑料，由含 乙烯 基的化合物聚合而成。

The silicone-acrylate emulsion and architectural coating were prepared with acrylate and silicone intermediate which was synthesized by vinyl group silicone monomer and cyclo-form silicone monomer .

先将 乙烯 基有机硅单体及环状有机硅单体在碱催化下，合成有机硅预聚体，再与丙烯酸酯进行共聚制得硅丙乳液及其建筑涂料。

In this paper we synthesize a vinyl monomer-Diacetone Acrylamide ( DAAM ) which can introduce keto group into the acrylic polymer .

本文合成了一种含有酮羰基的 乙烯 基单体&双丙酮丙烯酰胺（ DAAM）。

When it was substituted by other heterocyclic groups the anesthetic activity decreased . However some substituted vinyl groups were effective substitutes for 1 - β - phenyl group .

结果表明1-β- 苯基对麻醉活性起重要作用，被杂环基团取代活性下降，但某些取代 乙烯 基是可替代该苯基产生强效活性的一个有效结构。

The vinyl group in the vinyl ester is a typical ABX system in NMR other spectral characteristics are the same as in maleopimaric acid .

马来海松酸乙烯酯上的 乙烯 基在核磁共振谱图中呈现为很好的ABX系统，其他光谱特征与马来海松酸相同。

For samples polymerized from Ni + Mo catalysts systems branching point is formed through the opening of the double bond of 1 vinyl group .

而由Ni+Mo催化体系聚合的试样，可能为1 乙烯 基的双键打开接长支链。

Vinyl group linkage of 0 . 2 % in silicone gum could be determined with good precision .

硅生胶中0.2%的 乙烯 基测定的精密度为 5.5%。

Acrylic resin containing N N-dimethyl amino group and vinyl group applicable for UV-curable and cathodic electrophoretic paint was synthesized via radical polymerization of acrylic monomers followed by modification with methacrylic oxyethyl isocyanate ( MOI ) .

通过自由基共聚合得到丙烯酸树脂，然后用甲基丙烯酸异氰酸乙酯（MOI）对其改性，合成了既带有N，N二甲胺基，又带有 乙烯 基的紫外光固化阴极电泳漆基体树脂。

Study on the radiation crosslinking of silicone rubber ⅲ . the relationship between sol fraction and dose and the enhancement effect of vinyl group

硅橡胶的辐射交联研究Ⅲ.溶胶分数与剂量的关系及 乙烯 基的内强化效应

The results showed that the vinyl ester of disproportionated rosin consisted mainly of vinyl ester of dihydroabietic acid and dehydroabietic acid in 3 : 4 ( wt ) their vinyl group was a typical ABX system in the NMR .

结果表明：国产歧化松香乙烯酯的主要成分是二氢枞酸和脱氢枞酸的 乙烯 酯，二者重量比为 3：4；

The introduction of the vinyl monomer containing polar group into PP macromolecular chain could improve the flame retardance of PP obviously .

在PP大分子链上接枝含极性 基团 的 乙烯 基单体，可显著提高PP的阻燃性能；

It was found that with more dimethacrylate introduced the crosslinking density increased which put more restriction to the diffusion of transition metal complex giving rise to a faster polymerization rate and a higher vinyl group conversion .

研究发现，交联单体用量增加导致交联网络密度增大，过渡金属络合物的扩散受阻严重，从而使聚合速率和 双键转化率都增加；

The modification methods and principle of polyvinyl alcohol ( PVA ) were reviewed before and after vinyl acetate co-polymerization . The pre-modification was to copolymerize vinyl acetate with unsaturated compounds containing amido carboxyl epoxy or sulfonic group .

综述了聚乙烯醇（PVA）在醋酸乙烯共聚前后改性的方法和原理，前期改性是选用带有酰胺基、羧基、环氧基、磺酸 基的不饱和化合物与醋酸 乙烯共聚；

The effects of the type and content of vinyl monomer containing polar group on the flame retardance of PP were studied .

着重探讨了含极性 基团 的 乙烯 基单体种类及用量等因素对PP阻燃性的影响。

The electrophilic reaction of methyl pyropheophorbide-a ( MPP-a ) demonstrates that the electrophilic addition reaction and the electrophilic substitution reaction occur on the vinyl group at 3-position and 20-meso-position respectively .

焦脱镁叶绿酸a甲酯与溴素的亲电反应表明：在3位 乙烯 基上发生亲电加成反应，而与20位的meso氢则发生亲电取代反应。

Glycidyl methacrylate was a vinyl monomer having epoxy group . The polymer poly ( glycidyl methacrylate ) containing epoxy group can be prepared with glycidyl methacrylate by homopolymerization or copolymerization .

甲基丙烯酸缩水甘油酯（GMA）是一种含环氧基的 烯 类单体，通过均聚合或者共聚合可以制备带有环氧 基团的聚合物大分子。

Determination of vinyl group in silicone rubber by coulometry

用库仑法分析硅橡胶中 乙烯 基的含量

MQ resins containing different vinyl group content were synthesized .

合成了不同 乙烯 基含量的MQ树脂；