Poly(pent-1-ene) Synthesized with the Syndiospecific Catalyst i-Pr(Cp)(9-Flu)ZrCl2/MAO

Types of polyolefin fibres

“…The main advantage of this polyolefin is a combination of high melting point of 250°C with high crystallinity which gives it potential for strength and makes it suitable for high temperature usage where, for example, medical sterilisation is required (van der Ven, 1990c). In addition, a syndiotactic version of poly (pent-1-ene) has been reported (Grumel et al, 2002).…”

Effect of Different Aluminum Alkyls on the Metallocene/Methylaluminoxane Catalyzed Polymerization of Higher α‐Olefins and Styrene

“…The reason of such increase in M n with increasing the chain length of the monomer is unclear for us now, although several authors also observed similar effects, [40,41] while others reported that M n is independent of the chain length of the monomer. [37,42] It should be also noted that molecular weights of higher poly(a-olefin)s synthesized, determined by NMR spectroscopy, were typically higher than M n s calculated from SEC data [43] (M n was calculated based only on the olefinic chain end structures, for detail see Experimental Part and Figure 3). It can be attributed to Effect of Different Aluminum Alkyls on the Metallocene/Methylaluminoxane .…”

“…To examine the influence of a catalyst type and TIBA content in the cocatalyst on the end group structure, the obtained polymers were analyzed by 1 1,2-disubstituted vinylene end groups, respectively, in the spectrum [34,37,43,46,47] (Figure 3).…”

Syndiospecific Homopolymerisation of Higher 1‐Alkenes with Two Different Bridged [(RPh)2C(Cp)(2,7‐tert‐BuFlu)]ZrCl2 Catalysts

“…As a result, the homopolymers of higher 1-alkenes obtained with catalyst (1) or (2) and MAO have very high molar masses compared to the products obtained with other metallocene catalysts. [8][9][10][11][12][13] Taking into account the experimental error margins, all polymers show a polydispersity of nearly two.…”

“…[8] Asanuma [9] reported the syndiotactic polymerisation of alkenes from 1-butene to 1-octene while Wahner et al [10,11] investigated the polymerisation of alkenes from 1-pentene to 1-decene with different catalysts. Kinetics and the influence of different solvent polarities on hexene polymerisation were analysed by Odian [12] as well as Deffieux, [13] while Yamaguchi [14] polymerised hexene under high pressures.…”