COPOLYMERIZATION OF 1,3-BUTADIENE AND STYRENE WITH A NEODYMIUM CATALYST

Autor(en): OEHME, A
GEBAUER, U
GEHRKE, K
LECHNER, MD
Stichwörter: BUTADIENE; Polymer Science
Erscheinungsdatum: 1995
Herausgeber: HUTHIG & WEPF VERLAG
Journal: MACROMOLECULAR RAPID COMMUNICATIONS
Volumen: 16
Ausgabe: 8
Startseite: 563
Seitenende: 569
Zusammenfassung: 
Homo- and copolymerization of butadiene and styrene in the presence of the catalyst system Nd(octanoate)(3)/CCl4/Al(iBu)(3) (iBu:isobutyl) were investigated at 60 degrees C in heptane as solvent. The initiating catalyst system is very effective in the polymerization of butadiene. However, the presented copolymerization of butadiene and styrene is only practicable when using a special addition order of the catalyst components and a prescribed ageing phase. Copolymers obtained from various monomer feed ratios were characterized by H-1 and C-13 NMR spectroscopy and gel-permeation chromatography (GPC). The copolymer characteristics especially microstructure, molar mass and molar-mass distribution (MMD) are strongly dependent on the composition of the monomer mixture.
ISSN: 10221336
DOI: 10.1002/marc.1995.030160805

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