TERPOLYMERIZATION OF ETHYLENE,PROPYLENE AND 1-BUTENE WITH HIGHLY ACTIVE SUPPORTED TITANIUM CATALYST II.Characterizations of the Terpolymers

SUN Li-xin; LIN Shang-an

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TERPOLYMERIZATION OF ETHYLENE,PROPYLENE AND 1-BUTENE WITH HIGHLY ACTIVE SUPPORTED TITANIUM CATALYST II.Characterizations of the Terpolymers

Research Article | 更新时间：2021-03-19

- TERPOLYMERIZATION OF ETHYLENE,PROPYLENE AND 1-BUTENE WITH HIGHLY ACTIVE SUPPORTED TITANIUM CATALYST II.Characterizations of the Terpolymers
- Acta Polymerica Sinica Issue 2, Pages: 205-212(1990)
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- Published：20 April 1990，
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SUN Li-xin, LIN Shang-an. TERPOLYMERIZATION OF ETHYLENE,PROPYLENE AND 1-BUTENE WITH HIGHLY ACTIVE SUPPORTED TITANIUM CATALYST II.Characterizations of the Terpolymers. [J]. Acta Polymerica Sinica (2):205-212(1990)
DOI：

SUN Li-xin, LIN Shang-an. TERPOLYMERIZATION OF ETHYLENE,PROPYLENE AND 1-BUTENE WITH HIGHLY ACTIVE SUPPORTED TITANIUM CATALYST II.Characterizations of the Terpolymers. [J]. Acta Polymerica Sinica (2):205-212(1990) DOI：

摘要

通过各种表征手段对用TiCl4

Ti(OBu)4/MgCl2/EB/φSiCl2/AlEt3催化剂合成的乙丙丁三元共聚物进行了剖析。发现在一定组成范围内

三元共聚物不含庚烷不溶物。DSC和WAXD分析检测不到结晶相。用13C-NMR技术表征了在相同条件下合成的乙丙、乙丁及丙丁三组二元共聚物的序列分布。结果表明

乙丙和乙丁共聚物的序列结构可用一级Markov分布描述。丙丁共聚物则服从Bernoulli分布

用13C-NMR方法计算了乙丙丁三元共聚物的化学组成

并初步考察了共聚物硫化胶的力学性能。

Abstract

The characterization of ethylene-propylene-1-butene terpolymers synthesized by TiCl4

Ti (OBu)4/MgCl2/ethylbenzoate/2SiCl2/AlEt3 catalyst is described. DSC

WAXD analysis and solvent extraction show that the EPB terpolymers in a certain range of composition are elastomers without detectable crystallinity

which demonstrates a rather random structure and makes them promising for quality rubber. The comonomer sequence distributions are

by 13C-NMR analysis of binary copolymers

first-order Markovian for EP and EB copolymers but Bernoul-lian for PB copolymer. Three pairs of monomer reactivity ratios were evaluated. The assign-memts of the chemical shifts in the 13C-NMR spectra of EPB terpolymer was made and a method was proposed to determine the chemical composition of the EPB terpolymers.

关键词

钛催化剂负载型催化剂乙烯-丙烯-1-丁烯三元共聚合表征

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