Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Olof Sudmeijer"'
Publikováno v:
Macromolecular Chemistry and Physics. 201:1846-1852
13C and 1H NMR analysis of polypropylene prepared using various MgCl2-supported catalysts at different polymerization temperatures at different hydrogen concentrations has revealed that chain transfer with monomer, yielding vinylidene-terminated chai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4609df75190748d5def686d98e85a44
https://doi.org/10.1002/1521-3935(20000901)201:14<1846::aid-macp1846>3.0.co
https://doi.org/10.1002/1521-3935(20000901)201:14<1846::aid-macp1846>3.0.co
Autor:
Roberta Cipullo, Vincenzo Busico, Giovanni Talarico, Guglielmo Monaco, Michele Vacatello, John C. Chadwick, Anna Laura Segre, Olof Sudmeijer
Publikováno v:
Macromolecules. 32:4173-4182
The stereosequence distribution of the “atactic” and “isotactic” fractions of a polypropylene sample made with a MgCl2-supported catalyst was determined by means of high-resolution 13C NMR and analyzed in terms of statistical models of increa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e3da65a4b94f01a8db72597ebd17bfb
https://doi.org/10.1021/ma981941n
https://doi.org/10.1021/ma981941n
Publikováno v:
Topics In Catalysis. 7:145-163
The chemical structures of end groups of medium-low molecular weight atactic and isotactic polypropylenes (a-PP and i-PP), produced with zirconocene/methylalumoxane catalysts, have been analyzed and used to infer the chain-transfer reaction mechanism
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f861e5cdb6c833f0a7bbe16ded574d0
https://doi.org/10.1023/a:1019115801193
https://doi.org/10.1023/a:1019115801193
Publikováno v:
Macromolecular Chemistry and Physics. 199:1873-1878
A study of the effect of polymerization temperature on the microtacticity of poly(propylene) prepared using various MgCl 2 -supported catalysts has shown that, in almost all cases, an increase in temperature leads not only to higher proportions of is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d13a4941098b33023c281a6488cb4e74
https://doi.org/10.1002/(sici)1521-3935(19980901)199:9<1873::aid-macp1873>3.0.co
https://doi.org/10.1002/(sici)1521-3935(19980901)199:9<1873::aid-macp1873>3.0.co
Autor:
Giulio Balbontin, John C. Chadwick, Enrico Albizzati, Olof Sudmeijer, Giampiero Morini, Ines Mingozzi
Publikováno v:
Macromolecular Chemistry and Physics. 198:1181-1188
13C NMR analysis of poly(propylene) fractions of different tacticity, obtained using a catalyst system of type MgCl 2 /TiCl 4 /diisobutyl phthalate - AlEt 3 - diether, has provided further evidence that the active species in this system are similar t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef7c50710664dd409381d91d6066e65a
https://doi.org/10.1002/macp.1997.021980419
https://doi.org/10.1002/macp.1997.021980419
Publikováno v:
Macromolecular Chemistry and Physics. 196:1431-1437
Investigation of the effects of hydrogen and different external donors on the stereoregularity and chain-end distribution of polypropylene prepared using MgCl2/TiCl4/phthalate ester-AlEt3-alkoxysilane catalyst systems has not only confirmed the impor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9eebc9c595230eba5bcdfcdcf1cd8c1d
https://doi.org/10.1002/macp.1995.021960506
https://doi.org/10.1002/macp.1995.021960506
Publikováno v:
Macromolecular Chemistry and Physics. 195:167-172
13 C NMR analysis of relatively low-molecular-weight polypropylenes prepared using the catalyst system MgCl 2 /TiCl 4 /phthalate ester-AlEt 3 -external Lewis base has revealed the presence of up to around 20% butyl (n-Bu) chain ends, indicative of re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4d76906db5d96219b04ecfe070b7696
https://doi.org/10.1002/macp.1994.021950114
https://doi.org/10.1002/macp.1994.021950114
Publikováno v:
Die Makromolekulare Chemie, Theory and Simulations. 2:385-398
A new method is presented for data reconciliation in the 13C NMR determination of the pentad distribution in regioregular poly(propylene). Deviations of experimentally measured data from mathematically derived conservation laws are corrected by a max
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::591610f7f2b795b1aa5ec50407028c3c
https://doi.org/10.1002/mats.1993.040020309
https://doi.org/10.1002/mats.1993.040020309
Publikováno v:
Die Makromolekulare Chemie. 193:1463-1468
In propylene polymerization with MgCl2/TiCl4/phthalate ester catalysts, using 2,2,6,6-tetramethylpiperidine as external donor, it has been found that the fraction of atactic polymer formed increased with decreasing ester content in the catalyst. At t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99653a43f0d9d8d61d730a50aa185dcc
https://doi.org/10.1002/macp.1992.021930622
https://doi.org/10.1002/macp.1992.021930622
Autor:
John C. Chadwick, Giampiero Morini, Vincenzo Busico, Olof Sudmeijer, Giovanni Talarico, Giulio Balbontin
Publikováno v:
ACS Symposium Series ISBN: 9780841236141
Olefin Polymerization: Emerging Frontiers
Olefin Polymerization: Emerging Frontiers
Studies on the effects of hydrogen, monomer concentration and temperature in propene polymerization using high-activity MgCl2-supported catalysts have revealed that the effects of the catalyst on polymer yield, isotacticity and molecular weight are i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d4cb879e5f74a3d4c4479d2cbe6e6ad
https://doi.org/10.1021/bk-2000-0749.ch004
https://doi.org/10.1021/bk-2000-0749.ch004
