Abstract: The invention includes a system for fastening a planar element, which has a cut-out to a component, which has a borehole having a screw thread 5, including a fastening clip, which has a contact section having at least one contact plane for contacting a first side of the planar element facing away from the borehole, the fastening clip having an elastic first retaining element in a connection section, which first retaining element is connected to the contact section and is designed in such a way that, after the planar element 10 has been fastened, the first retaining element reaches through the cut-out of the planar element into the borehole when the contact plane lies on the first side of the planar element.

Abstract: The invention relates to a system for fastening a planar element (19), which has a cut-out (22), to a component (20), which has a borehole (18) having a screw thread (21), comprising a fastening dip (1), which has a contact section (2) having at least one contact plane (3) for contacting a first side of the planar element (19) facing away from the borehole (18), the fastening clip (1) having an elastic first retaining element (6) in a connection section (5), which first retaining element is connected to the contact section (2) and is designed in such a way that, after the planar element (19) has been fastened, the first retaining element reaches through the cut-out (22) of the planar element (19) into the borehole (18) when the contact plane (3) lies on the first side (24) of the planar element (19).

Abstract: Copolymers of ethylene with C3-C12 ?-olefin have a polydispersity Mw/Mn of ?10, a density of from 0.85 to 0.95 g/cm3, a proportion of from 1 to 40% by weight of comonomer and a molar mass Mn above 150,000 g/mol and a comonomer composition distribution breadth index above 70%. A process for their preparation is described, as are their use and fibers, moldings, films and polymer mixtures comprising these copolymers.