## Abstract 1,4‐Polybutadien wurde mit Dicumylperoxid vernetzt. Proben mit unterschiedlichem Vernetzungsgrad wurden zu Teilchen mit einem Durchmesser von < 0,1 mm gemahlen und in einer Metathese‐Reaktion mit kleinen Mengen 4‐Octen und dem Katalysator WCl~6~/(CH~3~)~4~Sn bei 20°C abgebaut. Die Frakt
Bildung von Cyclopentenylverbindungen beim Metathese-Abbau von modifiziertem 1,4-Polybutadien
✍ Scribed by Hummel, Klaus ;Heiling, Peter ;Karaoulis, Christos ;Kathan, Wolfgang ;Stelzer, Franz
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1980
- Weight
- 621 KB
- Volume
- 181
- Category
- Article
- ISSN
- 0025-116X
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✦ Synopsis
Abstract
This investigation deals with metathesis degradation products of modified 1,4‐polybutadiene (poly(1‐butenylene)) which have not been taken into consideration as yet, e.g. substituted cyclopentene and linear isomerization products. Substituents were introduced into 1,4‐poly‐butadiene either by partial bromination with N‐bromosuccinimide followed by a Grignard‐Wurtz reaction or by reaction with the corresponding methyl compound and dicumyl peroxide. Polymers with 2‐methylbenzyl, 4‐methylbenzyl, 4‐chlorobenzyl, 4‐methoxybenzyl, 2‐naphthylmethyl, 2,4,6‐trimethylphenyl, 1‐naphthyl, 9‐anthryl, and 9‐phenanthryl substituents were degraded by metathesis with 4‐octene using WCl~6~/(CH~3~)~4~Sn as a catalyst and were analyzed by gas chromatography/mass spectrometry and by liquid chromatography.
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## Abstract Partially hydrogenated 1,4‐polybutadiene is degraded into GC‐detectable reaction products after olefin‐metathesis with 4‐octene in the presence of WCI~6~/(CH~3~)~4~Sn. 1,4‐polybutadiene is homogeneously hydrogenated with __p__‐toluenesulfonohydrazide and serves as copolymer with non‐hyd
## Abstract Die Metathese‐Reaktion von Polybutadien mit 4‐Octen wurde in Anwesenheit eines C~2~H~5~AlCl~2~/WCl~6~‐Katalysators untersucht. Die Kettenlängenverteilung der Produkte wurde gaschromatographisch bestimmt und entsprach unter optimalen Reaktionsbedingungen einer statistischen Kombination d
## Abstract 1,4‐Polybutadiene was partially aralkylated with halogenated alkylbenzenes (4‐fluorotoluene, 2‐, 3‐, and 4‐chlorotoluene, 4‐bromotoluene, 2‐chloro‐__p__‐xylene, 2,4‐dichlorotoluene, 3,4‐dichlorotoluene) and dicumyl peroxide. The modified polymers were investigated by IR‐spectroscopy and