NOVEL CATALYST SYSTEMS AND POLYMER RESINS HAVING IMPROVED BARRIER PROPERTIES

摘要

A catalyst system comprising a half-sandwich chromium complex, an activator support and an optional cocatalyst. A compound of formula Cp'Cr(C1)2(Ln), where Cp' is ?5- C5H4CH2CH2CH=CH2 and Ln is pyridine, THF or diethylether. A compound of formula Cp"Cr(C1)2(Ln), where Cp" is ?5-C5H4C(Me)2CH2CH2CH=CH2 and Ln is pyridine, THF or diethylether.