caa a22 4500 465788106 CHVBK 20180323112015.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF01032450 doi (NATIONALLICENCE)springer-10.1007/BF01032450 Investigation of 1,3,5-tris(2-metoxypropane)benzene/BCl3 initiated living isobutylene polymerization by C13 and B11 NMR spectroscopy [Elektronische Daten] [Miklós Zsuga, Lajos Balogh, Tibor Kelen, János Borbély] Summary: The living carbocationic polymerization of isobutylene initiated by 1,3,5-tris(2-methoxypropane) benzene (TriCumOMe)/BCl3 system was investigated by C13 and B11 NMR spectroscopy. The reaction between the TriCumOMe and BCl3 at-30°C in CH2Cl2 after 15 mins reaction time resulted in 1,3,5-tris(2-chloropropane) benzene (TriCumCl) and methyl-dichloroboronite (BCl2OMe). The same system in the presence of isobutylene yielded three-arm star, chlorine terminated telechelic polyisobutylene and BCl2OMe. No counterions, i.e., BCl3OMe⊝, BCl 4 ⊝ , or neutral boron complexes, e.g., TriCumOMe, 3BCl3 could be detected. The simultaneous measurement of static permittivity (direct monitoring method) showed different reaction rate patterns in the case of AMI method, and when the TriCumOMe+BCl3 mixture was aged and the polymerization was started by isobutylene. Springer-Verlag, 1990 Zsuga Miklós Department of Applied Chemistry, Kossuth Lajos University, H-4010, Debrecen, Hungary aut Balogh Lajos Department of Applied Chemistry, Kossuth Lajos University, H-4010, Debrecen, Hungary aut Kelen Tibor Department of Applied Chemistry, Kossuth Lajos University, H-4010, Debrecen, Hungary aut Borbély János Department of Applied Chemistry, Kossuth Lajos University, H-4010, Debrecen, Hungary aut Polymer Bulletin Springer-Verlag 23/3(1990-03-01), 335-340 0170-0839 23:3<335 1990 23 289 https://doi.org/10.1007/BF01032450 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01032450 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zsuga Miklós Department of Applied Chemistry, Kossuth Lajos University, H-4010, Debrecen, Hungary aut NATIONALLICENCE 700 1- Balogh Lajos Department of Applied Chemistry, Kossuth Lajos University, H-4010, Debrecen, Hungary aut NATIONALLICENCE 700 1- Kelen Tibor Department of Applied Chemistry, Kossuth Lajos University, H-4010, Debrecen, Hungary aut NATIONALLICENCE 700 1- Borbély János Department of Applied Chemistry, Kossuth Lajos University, H-4010, Debrecen, Hungary aut NATIONALLICENCE 773 0- Polymer Bulletin Springer-Verlag 23/3(1990-03-01), 335-340 0170-0839 23:3<335 1990 23 289 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer