NEW HIGHLY ACTIVE CATALYSTS Cp'Ti(O-C6H4-X)3 FOR BULK SYNDIOSPECIFIC POLYMERIZATION OF STYRENE

SHEN Zhigang; ZHOU Wenle; ZHU Fangming; LIN Shangan

doi:null

您当前的位置：

首页 >

文章列表页 >

NEW HIGHLY ACTIVE CATALYSTS Cp'Ti(O-C6H4-X)3 FOR BULK SYNDIOSPECIFIC POLYMERIZATION OF STYRENE

Research Article | 更新时间：2021-03-19

- NEW HIGHLY ACTIVE CATALYSTS Cp'Ti(O-C6H4-X)3 FOR BULK SYNDIOSPECIFIC POLYMERIZATION OF STYRENE
- Acta Polymerica Sinica Issue 1, Pages: 45-49(2004)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：20 February 2004，
扫描看全文
SHEN Zhigang, ZHOU Wenle, ZHU Fangming, LIN Shangan. NEW HIGHLY ACTIVE CATALYSTS Cp'Ti(O-C6H4-X)3 FOR BULK SYNDIOSPECIFIC POLYMERIZATION OF STYRENE. [J]. Acta Polymerica Sinica (1):45-49(2004)
DOI：

SHEN Zhigang, ZHOU Wenle, ZHU Fangming, LIN Shangan. NEW HIGHLY ACTIVE CATALYSTS Cp'Ti(O-C6H4-X)3 FOR BULK SYNDIOSPECIFIC POLYMERIZATION OF STYRENE. [J]. Acta Polymerica Sinica (1):45-49(2004) DOI：

摘要

对位卤代的苯酚与五甲基茂三氯化钛在三乙胺存在下进行酯化反应

制得五甲基茂基三(对-卤代苯氧基 )钛的 4种新型化合物Cp*Ti(O-C6H4-X)3(X =F

I) .用作主催化剂经甲基铝氧烷 (MAO)和三异丁基铝 (TIBA)活化

对苯乙烯间规聚合显示出极高的催化活性

催化剂热稳定性好

制得的聚苯乙烯间规度、分子量和熔点均高

在MAO/TIBA/Ti=400/200/1(摩尔比)

温度60℃时

10min催化效率可达3.47×106gPS/mol·Ti

MAO/TIBA/Ti=400/200/1时茂钛化合物的催化活性几乎是MAO/Ti=600时的10倍以上 ;4种茂钛催化剂的活性次序Cp*Ti(O C6H4F)3 >Cp*Ti(O-C6H4Cl)3 >Cp*Ti(O-C6H4Br)3 >Cp*Ti(O-C6H4 I)3 .

Abstract

Four kinds of ancillary ligands-O-C6 H4-X[X(P)=F

I] were introduced in the design of novel monotitanocene catalysts

Cp*Ti(O-C6H4-X)3．All of the new catalysts show high activity for styrene syndiotactic polymerization．The catalytic activity of the four monotitanocene increased in the order：Cp*Ti(O-C6H4-I)3*-Ti-(O-C6H4-Br)3*Ti(O-C6H4-Cl)3*Ti(O-C6H4-F)3.The addition of triisobutylaluminium(TIBA)to the catalyst system caused a dramatic increase of s-PS yield．At 90℃

MAO/TIBA/Ti=400/200/1(molar ratio)

the catalytic efficiency of Cp*Ti(O-C6H4-F)3 is up to 3.46×106g polymer/mol·Ti·10min The polymerization activity of Cp*Ti(O-C6H4-X)3 at MAO/TIBA/Ti=400/200/1(molar ratio) is about 10 times higher than that at MAO/Ti=600(in the absence of TIBA)．The catalytic efficiency of the catalyst and the molecular weight were affected by catalyst composition

monomer concentration and polymerization temperature．The kinetics of styrene syndiotactic polymerization in toluene was also studied．

关键词

配体茂钛催化剂苯乙烯间规聚合

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 FLUORESCENE LABELED PEPTIDE/POLY(ETHER-AMIDE)WITH TARGETING FUNCTION TO LIVER CANCER CELLS

SYNTHESIS AND PROPERTIES OF POLY(IMINO KETONE)S

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

SYNTHESIS OF POLYBUTADIENE WITH TITANOCENE CATALYST

SYNTHESIS OF 1-POLYBUTENE WITH TITANOCENE CATALYST

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