-
公开(公告)号:US10253115B2
公开(公告)日:2019-04-09
申请号:US14240696
申请日:2012-08-29
申请人: Peter Denifl , Pirjo Jaaskelainen , Timo Leinonen , Bo Malm , Anders E. Nymark , Torvald Vestberg
发明人: Peter Denifl , Pirjo Jaaskelainen , Timo Leinonen , Bo Malm , Anders E. Nymark , Torvald Vestberg
摘要: Process for producing of a capacitor film comprising the steps of (a) polymerizing propylene in the presence of a catalyst comprising a solid catalyst system obtaining a polypropylene, (b) subjecting said polypropylene to a film forming process obtaining a capacitor film, wherein during the polymerization step (a) said catalyst comprising the solid catalyst system fragments into nanosized catalyst fragments being distributed in said polypropylene, said solid catalyst system comprises a transition metal, a metal which is selected from one of the groups 1 to 3 of the periodic table (IUPAC), and an internal electron donor.