SYNTHESIS OF A TITANIUM COMPLEX CONTAINING β-DIKETONE LIGAND AND ITS CATALYSIS FOR SYNDIOTATIC POLYMERIZATION OF STYRENE

XU Xuexiang; SUN Min; YU Peng; JING Zhenhua

doi:null

您当前的位置：

首页 >

文章列表页 >

SYNTHESIS OF A TITANIUM COMPLEX CONTAINING β-DIKETONE LIGAND AND ITS CATALYSIS FOR SYNDIOTATIC POLYMERIZATION OF STYRENE

Research Article | 更新时间：2021-03-19

- SYNTHESIS OF A TITANIUM COMPLEX CONTAINING β-DIKETONE LIGAND AND ITS CATALYSIS FOR SYNDIOTATIC POLYMERIZATION OF STYRENE
- Acta Polymerica Sinica Issue 5, Pages: 667-671(2002)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：20 October 2002，
扫描看全文
XU Xuexiang, SUN Min, YU Peng, JING Zhenhua. SYNTHESIS OF A TITANIUM COMPLEX CONTAINING β-DIKETONE LIGAND AND ITS CATALYSIS FOR SYNDIOTATIC POLYMERIZATION OF STYRENE. [J]. Acta Polymerica Sinica (5):667-671(2002)
DOI：

XU Xuexiang, SUN Min, YU Peng, JING Zhenhua. SYNTHESIS OF A TITANIUM COMPLEX CONTAINING β-DIKETONE LIGAND AND ITS CATALYSIS FOR SYNDIOTATIC POLYMERIZATION OF STYRENE. [J]. Acta Polymerica Sinica (5):667-671(2002) DOI：

摘要

制备了 β-二酮类配体[O

O]的茂基二氯化钛配合物CpTi(dbm)Cl<>sub2.实验证明

这类配合物在助催化剂甲基铝氧烷MAO作用下

可催化苯乙烯间规聚合 .显示较高的活性 (10.7×105gPS/molTi·h).所得聚合物具有较高的间规度 .CpTi(dbm)Cl2/MAO体系催化活性随铝钛比的增加呈上升而后衰减

当铝钛比为500左右时活性最高 ;聚合温度较高时会导致催化活性下降 .对聚合物进行了13C-NMR表征.

Abstract

Syndiotactic polystyrene (sPS) is a new class of thermoplastics and is unusual among polystyrenes for its properties．Since Ishihara reported on the titanium complexes with mono-cyclopentadienyl ligand for production of sPS

a lot of catalysis for styrene syndiotactic polymerization has been reported in the literature．A series of half-metallocene complexes have been reported in our studies

these catalysts have high stability and activity for olefin polymerization with low molar ratio of aluminium／titanium and produce polymers with different chain microstructures．In the paper

synthesis of half-metallocene complexes [CpTi(dbm)Cl2] and [CpTi(dbm)2Cl] containing β/i>-diketone ligand are discribed．It is proved by the experiments that [CpTi(dbm)Cl2] is active for styrene polymerization at 40℃ with MAO activation

and exhibits higher activity than CpTiCl3．Giving the polymers with high syndiotacticity.For the [CpTi(dbm)Cl2]／MAO system

the activity is “up and down” type with increase in the Al／Ti molar ratio

and up to the highest when the Al／Ti molar ratio is about 500

10.7×l05 gPS／molTi·h or so；also the active decreases when the polymerization time is too high．The polymers prepared by [CpTi(dbm)Cl2] were extracted with boiling n-butanone and characterized by 13C-NMR．

关键词

二苯甲酰甲烷茂配合物钛配合物苯乙烯间规聚合催化剂

Keywords

references

更多指标>

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

SYNTHESIS OF NOVEL HALF-METALLOCENE COMPLEXES ([O,O]CpTiCl) CONTAINING BISPHENOXY LIGANDS AND THEIR CATALYTIC PROPERTIES FOR ETHYLENE POLYMERIZATION

SYNTHESIS OF THE NOVEL TITANIUM COMPLEX ([O,N]CpTiCl2) CONTAINING 8-HYDROXY-QUINOLINE LIGAND AND ITS CATALYSIS FOR ETHYLENE POLYMERIZATION

CATALYSIS OF THE METALLOCENE ANALOGIC COMPLEX (NpCpTiCl2) CONTAINING THE AZOLE LIGAND (Np) FOR ETHYLENE POLYMERIZATION

HIGH EFFICIENT POLYMERIZATION OF β-PINENE CATALYZED BY 2-AMINOPYRIDINE NICKEL(Ⅱ) COMPLEXES/MAO

SYNTHESIS OF POLY(ETHYLENE TEREPHTHALATE-co-ETHYLENE ADIPATE) CATALYZED BY RARE EARTH ACETATES

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