Syndiospecific Polymerization of Styrene Catalyzed by IndTiCl_2(OR)/Methylaluminoxane System

来源 :催化学报 | 被引量 : 0次 | 上传用户:jingbao0804
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
SinceIshiharaetal[1 ] reportedthatanewmacromoleculesyndiotactic polystyrene (s PS )couldbeproducedwithhighstereoregularitybyus ing (η5 ? Since Ishihara et al [1] reportedthatanewmacromoleculesyndiotactic polystyrene (s PS) could not be produced withhighstereoregularitybyus ing (η5?
其他文献
In the presence of metallic samariumcobalt (II) chloride hexahydrate, the nitrones can be reduced to the corresponding imines in moderate to high yields under m
目的研究分析双联抗血小板加质子泵抑制剂泮托拉唑对急性心肌梗死患者预后的影响。方法选择2014年4月—2017年3月接受经皮冠状动脉介入(percutaneous coronary intervention,
The two channels of the CH3OH+Cl hydrogen abstraction reaction, leading to the final products CH2OH+HCl (i) and CH3O+HCl (ii), have been studied by performing a
目的探讨心脉隆对急性心肌梗死介入术后心力衰竭患者BNP、IL-6、cTnI指标的影响。方法选取2014年7月—2017年7月行PCI术后出现心力衰竭的AMI患者100例,随机分为对照组和观察
2000年石油价格走势研讨会于1999年12月8日至10日在北京西域石油宾馆召开,国家计委、国家经贸委、中国国际经济关系学会、中油集团、中国石化、中国海洋石油总公司、中国新
A method for labeling polypeptide (insulin) with technetium- 99(99mTc) was established without marked loss of biological activity. Following reduction of intri
A diamond single crystal, which was synthesized at a high temperature of 1570 K and a high pressure of 5.5 GPa in a Fe-Ni-C system, was directly and systematica
Nanostructured columns with a length about several tens of micrometer and a diameter of about 80 nm were obtained by molecular recognition directed self-assemb
随着尺寸不断缩减,串扰对单粒子效应的影响越来越重要.为了量化串扰效应对单粒子瞬态(SET)的影响,基于SET等效电路和互连线的6结点模型,利用所定义的导纳的四种规则,简化计算
JD-1075H/4联合收割机起动、喇叭、喷油泵、输油泵、后轮驱动及拨禾轮无级变速电路见电路图。 1.起动电路起动电路主要由起动开关A29、安全开 JD-1075H / 4 combine harves