Copolymerization of Propylene with 1-Hexene and 4-Methyl-1-Pentene in Liquid Propylene Medium. Synthesis and Characterization of Random Metallocene Copolymers with Isotactic Propylene Sequences

Autor:	Anton A. Koval’chuk, A. N. Klyamkina, P. M. Nedorezova, Eugeniy M. Antipov, A. M. Aladyshev
Rok vydání:	2005
Předmět:	Materials science Polymers and Plastics Comonomer Kinetics 4-Methyl-1-pentene General Chemistry Condensed Matter Physics 1-Hexene chemistry.chemical_compound chemistry Tacticity Polymer chemistry Materials Chemistry Copolymer Organic chemistry Reactivity (chemistry) Metallocene
Zdroj:	Polymer Bulletin. 56:145-153
ISSN:	1436-2449 0170-0839
DOI:	10.1007/s00289-005-0483-1
Popis:	Propylene copolymerization with 1-hexene and 4-methyl-1-pentene in liquid propylene medium in presence of MAO-activated C2-symmetry ansa-zirconocene rac-Me2Si(4-Ph-2-MeInd)2ZrCl2 was studied. Random copolymers of propylene with 1-hexene and 4-methyl-1-pentene content up to 7 mol % were obtained at 60 °C. General kinetic characteristics of propylene/higher α-olefin copolymerization were evaluated. The distinct feature of propylene copolymerization with 1-hexene and 4-methyl-1-pentene in liquid propylene medium – the proximity of comonomer relative reactivity ratios (r1∼r2∼1) that indicates azeotropic nature of copolymerization processes in studied conditions. Synthesized copolymers were characterized with the use of IR, 13C NMR, GPC, WAXD, DSC techniques, and uniaxial tensile testing.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c478eb381732a50323d305bee4c34143 https://doi.org/10.1007/s00289-005-0483-1 Zobrazit plný text záznamu Full text from SpringerLink