Abstract: The present invention relates to a semicrystalline propylene polymer composition prepared by polymerizing propylene, ethylene and/or C4-C18-1-alkenes, where at least 50 mol % of the monomer units present stem from the polymerization of propylene and at least 20% by weight of the propylene polymer composition is the result of a polymerization using metallocene catalysts, with a melting point TM of from 65 to 170° C., where the semicrystalline propylene polymer composition can be broken down into from 65 to 85% by weight of a principal component A, from 10 to 35% by weight of an ancillary component B and from 0 to 25% by weight of an ancillary component C.

Abstract: A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.

Abstract: A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.

Abstract: The present invention relates to a semicrystalline propylene polymer composition prepared by polymerizing propylene, ethylene and/or C4-C18-1-alkenes, where at least 50 mol % of the monomer units present stem from the polymerization of propylene and at least 20% by weight of the propylene polymer composition is the result of a polymerization using metallocene catalysts, with a melting point TM of from 65 to 170° C., where the semicrystalline propylene polymer composition can be broken down into from 65 to 85% by weight of a principal component A, from 10 to 35% by weight of an ancillary component B and from 0 to 25% by weight of an ancillary component C, and where the proportions of components A, B and C are determined by carrying out TREF (temperature rising elution fractionation) in which that fraction of the propylene polymer composition which is soluble in xylene at (TM/2)+7.5° C. is firstly dissolved and separated off and then, as the temperature rises, at all of the higher temperatures 70° C., 75° C.

Abstract: Novel metallocene monohalides can be used in the polymerization of olefins.

Abstract: A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.

Abstract: A semicrystalline propylene polymer composition with good suitability for producing biaxially oriented films and prepared by polymerizing propylene, ethylene and/or C4-C18-1-alkenes, where at least 50 mol % of the monomer units present arise from the polymerization of propylene. Also described is the use of the semicrystalline propylene polymer composition for producing films, fibers or moldings, the films, fibers and moldings made from these compositions, biaxially stretched films made from the semicrystalline propylene polymer compositions, and also a method for characterizing the semicrystalline propylene polymer compositions.

Abstract: A semicrystalline propylene polymer composition with good suitability for producing biaxially oriented films and prepared by polymerizing propylene, ethylene and/or C4-C18-1-alkenes, where at least 50 mol % of the monomer units present arise from the polymerization of propylene,

Abstract: A continuous microwave furnace (10) with furnace modules (12) is described, which modules, in a series of sequential placement, one after the other, form a heated zone. On the respective housing casing (14) is provided at least one microwave radiating source (30) located at a corresponding radiation window (31). In each respective furnace module (12) a sheet steel bottom (26) is furnished, this being adjustable as to height and is constructed with secondary radiating openings (28). In the continuous microwave furnace (10) is provided a transport apparatus (33), which is constructed of a conveyor belt or transport rollers. Air openings (35) can be supplied, neighboring the radiation window (31) of the respective microwave radiation source (30). The respective radiation source (30) is then combined with an air regulating apparatus (45).