✦ LIBER ✦

Copolymerization of ethylene and 1,5-hexadiene under high pressure catalyzed by a metallocene

✍ Scribed by Ch Bergemann; R Cropp; G Luft

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 192 KB
Volume: 116
Category: Article
ISSN: 1381-1169
DOI: 10.1016/s1381-1169(96)00366-4

No coin nor oath required. For personal study only.

✦ Synopsis

The copolymerization of ethylene and 1,5-hexadiene was investigated under high pressure of 1500 bar using a zirconocene catalyst in the presence of methylaluminoxane. The concentration of the diene was varied over a wide range including the homopolymerization of both ethylene and 1,5-hexadiene. From the amount of polymer formed per unit of time and the catalyst feed the productivity was determined. The resulting polymers were analyzed by DSC, GPC, IR-and 13 C-NMR-spectroscopy to evaluate the average molecular weights together with the polydispersity, the crystallinity, the melting point and the structure. The catalyst exhibits a good ability for copolymerization and cyclopolymerization of 1,5-hexadiene in which a predominance of trans ring formation was observed.

📜 SIMILAR VOLUMES

Cyclopolymerization of 1,5-hexadiene cat

Cyclopolymerization of 1,5-hexadiene catalyzed by various stereospecific metallocene compounds

✍ Il Kim; Young Shu Shin; Jin Kook Lee; Mi-Sook Won 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 155 KB

Cyclopolymerization of 1,5-hexadiene has been carried out at various temperatures in toluene by using three different stereospecific metallocene catalystsisospecific rac-(EBI)Zr(NMe 2 ) 2 [EBI: ethylenebis(1-indenyl), Cat 1], syndiospecific Me 2 C(Cp)(Flu)ZrMe 2 (Cp ϭ 1-cyclopentadienyl, Flu ϭ 1-flu

Copolymerization of ethylene and linear

Copolymerization of ethylene and linear 1-olefins with a metallocene catalyst system under high pressure. Part I. Copolymerization of ethylene and propene

✍ C. Bergemann; R. Cropp; G. Luft 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 447 KB

Application of a cationic activated meta

Application of a cationic activated metallocene catalyst system in the copolymerization of ethylene and 1-butene under high pressure

✍ Ch. Bergemann; G. Luft 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 171 KB

Study on copolymerization of ethylene/1-

Study on copolymerization of ethylene/1-hexene catalyzed by a novel polystyrene-supported metallocene catalyst

✍ Wenqin Wang; Li Wang; Xiaochen Dong; Tianxu Sun; Jianfeng Wang 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 319 KB 👁 2 views

## Abstract Ethylene/1‐hexene copolymerization was carried out with polystyrene‐supported metallocene catalyst. It was found that the kinetic of the copolymerization was strongly influenced by the steric hindrance of carrier. The influences of 1‐hexene concentration in the feed on catalyst producti

Stereospecific polymerization of 1-hexen

Stereospecific polymerization of 1-hexene catalyzed by ansa-metallocene/methylaluminoxane systems under high pressures

✍ Yoshitaka Yamaguchi; Noriyuki Suzuki; Arno Fries; Takaya Mise; Hiroyuki Koshino; 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 198 KB 👁 2 views

Stereospecific polymerization of 1-hexene under high pressures (up to 1,000 MPa ϭ ca. 10,000 atm) using metallocene/methylaluminoxane (MAO) catalysts was investigated. Several C 2 -symmetric ansa-metallocenes, their meso-isomers, and two C s -symmetric ansa-metallocenes were employed as catalyst pre

Kinetic Investigations of the Metallocen

Kinetic Investigations of the Metallocene – Catalyzed Polymerization of Ethylene at High Pressure

✍ A. Rau; S. Schmitz; G. Luft 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 283 KB 👁 2 views