COPOLYMERIZATION OF ETHYLENE WITH 1-OCTENE CATALYZED BY HAFNOCENE DIAMIDE

ZHOU Jiamin; SHENG Jing

doi:null

您当前的位置：

首页 >

文章列表页 >

COPOLYMERIZATION OF ETHYLENE WITH 1-OCTENE CATALYZED BY HAFNOCENE DIAMIDE

Research Article | 更新时间：2021-03-19

- COPOLYMERIZATION OF ETHYLENE WITH 1-OCTENE CATALYZED BY HAFNOCENE DIAMIDE
- Acta Polymerica Sinica Issue 1, Pages: 79-84(2000)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：20 February 2000，
扫描看全文
ZHOU Jiamin, SHENG Jing. COPOLYMERIZATION OF ETHYLENE WITH 1-OCTENE CATALYZED BY HAFNOCENE DIAMIDE. [J]. Acta Polymerica Sinica (1):79-84(2000)
DOI：

ZHOU Jiamin, SHENG Jing. COPOLYMERIZATION OF ETHYLENE WITH 1-OCTENE CATALYZED BY HAFNOCENE DIAMIDE. [J]. Acta Polymerica Sinica (1):79-84(2000) DOI：

摘要

在亚乙基双（茚基）二胺化茂铪（ｒａｃ-Ｃ２Ｈ４(Ｉｎｄ）２Ｈｆ（ＮＭｅ２）２

简称１

Ｉｎｄ＝茚基

Ｍｅ＝甲基）催化作用下

对乙烯（Ｅ）与１-辛烯（Ｏ）无规共聚合进行了研究．作为比较

利用异亚丙基（环戊二烯基）（１-芴基）二甲基锆茂催化体系（（ＣＨ３）２Ｃ（Ｆｌｕｏ）（Ｃｐ）ＺｒＭｅ２

简称２

Ｆｌｕｏ＝芴基

Ｃｐ＝环戊二烯基）对乙烯／１-辛烯在相同共聚合条件下进行了共聚合．结果表明

在单体浓度比［Ｏ］／［Ｅ］较小时共聚合速率随单体浓度比增加而增加

进一步增加单体浓度比则导致共聚合速率降低．催化体系１／Ａｌ（ｉＢｕ）２Ｈ／［Ｐｈ３Ｃ］［Ｂ（Ｃ６Ｆ５）４］（３）催化共聚活性比２／ＭＡＯ高得多．共聚物中辛烯含量随反应单体１-辛烯含量的增加而增加

两单体竞聚率乘积（ｒＥ×ｒｏ）小于１

表明聚合物为无规共聚物．相同共聚单体浓度比下１／Ａｌ（ｉＢｕ）２Ｈ／３催化共聚物中辛烯含量比２／ＭＡＯ共聚物中辛烯含量高

表明前者具有更强的共聚合能力．所得无规共聚物熔点温度、结晶度、本体粘度及密度随共聚物中辛烯含量的增加而显著降低．辛烯含量较高时共聚物呈现明显无结晶行为．差示扫描量热分析显示

同乙烯均聚物相比

共聚物具有较宽的熔融峰

甚至出现双熔点．同催化体系２／ＭＡＯ相比

１／Ａｌ（ｉＢｕ）２Ｈ／３催化共聚物具有更宽的密度变化范围

从０.９６５到０.８４０ｇ／ｃｍ３．

Abstract

Copolymerization of ethylene with 1 octene is reported based on metallocene

rac-C2H4(Ind)2Hf(NMe2)2 (1) (Ind=η5-indenyl) and (CH3)2C(Fluo)(Cp)ZrMe2 (2) (Cp=η5-cyclopentadienyl

Fluo=η5-fluorienyl).The result shows that the copolymerization rate increases with the increase of comonomer molar ratio ([O]/[E]).Further increase of [O]/[E] reduces copolymerization rate.The activity of 1/Al(iBu)2/[Ph3C][B(C6F5)4](3) is much higher than that of 2/MAO.System 1/Al(iBu)2/[Ph3C][B(C6F5)4](3) is much higher than that of 2/MAO.System 1/Al(iBu)2/3 also shows higher incorporation ability of 1-octene into copolymer than that of 2/MAO.The values of the product rE×rOare below 1for all the resulting copolymer

which correspond to random copolymer structures with a more alternating structure.The melting point(Tm)

crystallinity (Xc)

intrinsic viscosity ([η]) and density (D) of the type of catalytic system. High comonomer contents of the products show clearly amorphous behavior.All the copolymers show melting within a broad temperature range

duplicate peaks or with shoulder.The copolymers produced by 1/Al(iBu)2H/3 have much higher molecular weight than that of 2/MAO

and have a wider range of density rfom 0.965 to 0.84g/cm3.

关键词

金属茂胺基金属茂共聚合乙烯1-辛烯聚烯烃

Keywords

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

COPOLYMERIZATION OF ETHYLENE/1 OCTENE WITH ANSA ZIRCONOCENE CATALYSTS

ETHYLENE-1-HEXENE COPOLYMERIZATION WITH A 2,6-DIISOPROPYLPHENOL MODIFIED SUPPORTED ZIEGLER-NATTA CATALYST

COPOLYMERIZATION OF ETHYLENE/PROPYLENE AND ETHYLENE/1-BUTENE WITH ZIRCONOCENE CATALYSTS

STUDY ON TIlE COPOLYMERIZATION OF ETHYLENE AND NORBORNENE WITH ZIRCONCENES/METHYLALUMINOXANE CATALYST SYSTEMS

STUDY ON THE SUPPORTED CATALYST OF n-BUTOXYL TITANIUM CHLORIDE FOR COPOLYMERIZATION OF ETHYLENE AND BUTENE-1

Related Author

No data

Related Institution

No data

Postal code：100190
Tel：010-62588927 Email：gfzxb@iccas.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备05002797号-8 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰