公开(公告)号：US10676550B2

公开(公告)日：2020-06-09

申请号：US15742552

申请日：2016-07-07

申请人： INEOS EUROPE AG

发明人： Serge Desportes ,  Imen Ghouila ,  Claudine Lalanne-Magne ,  Eric Osmont

IPC分类号： C08F210/16 ,  C08F4/6592 ,  C08J5/18 ,  C08F4/659

摘要： Novel copolymers having a density (D) in the range 0.895-0.910 g/cm3, a melt index MI2 (2.16 kg, 190° C.) in the range of 0.01-6 g/10 min, a Compositional Distribution Branch Index (CDBI) in the range 55-85%, and a sealing initiation temperature (SIT) and density (D) satisfying the relationship SIT≤(A×D)−B wherein A is 800° C.×cm3/g and B is 650° C., wherein the SIT (° C.) is determined on a 70 μm film at 0.5N/15 mm and D Is in units of g/cm3 are disclosed. The copolymers may be suitably prepared by use of metallocene catalyst systems and may be used in film applications, in particular as sealing layers for packaging applications.