Reactions of low molecular weight polypropylene induced by titanium compounds

Autor:	K. Veselý, J. Majer, J. Kresta
Rok vydání:	2007
Předmět:	Polypropylene chemistry.chemical_classification chemistry.chemical_compound Hydrocarbon chemistry Bond strength Polymer chemistry chemistry.chemical_element Redox Oligomer Catalysis Titanium
Zdroj:	Journal of Polymer Science Part C: Polymer Symposia. 22:329-338
ISSN:	1935-3065 0449-2994
DOI:	10.1002/polc.5070220127
Popis:	The thermal and thermooxidative reactions of polypropylene oligomer in the presence of α-TiCl3, TiOCl2, Ti(O-i-Pr)4, and HCl were studied. HCl is formed during the reaction of α-TiCl3 with hydrocarbon; the rate of formation is a function of the C–H bond strength. In the oxidation reactions of the polypropylene oligomer Ti3+ acts as a terminator of the oxidation chain and, if its concentration is higher than that of the hydroperoxides, it inhibits the process. Ti4+ (TiOCl2, Ti(O-i-Pr)4) retards oxidation, and HCl acts as catalyst.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ad1a6efa4c26e7c5ce4661c2c14fd6de https://doi.org/10.1002/polc.5070220127 Zobrazit plný text záznamu