Patent application number | Description | Published |
20090131611 | SHORT-CHAIN BRANCHED POLYPROPYLENE - A short-chain-branched polypropylene having xylene solubles of at least 0.5 percent by weight is provided. In certain embodiments the polypropylene has a strain hardening index of at least 0.15 as measured by a deformation rate of 1.00 s | 05-21-2009 |
20090148716 | ELECTRICAL INSULATION FILM - Certain embodiments of the present technology provide a capacitor film comprising a polypropylene material. The capacitor film comprises xylene solubles of at least 0.5 percent by weight. In certain embodiments the xylene solubles are in a range of 0.5 to 1.5 percent by weight. The film also comprises a crystalline fraction melting in the temperature range of 200° C. to 105° C. determined by stepwise isothermal segregation technique. The crystalline fraction comprises a part, the part representing at least 10 percent by weight of said crystalline fraction, and wherein the part melts at a melting rate of 10° C./min. Certain embodiments present a capacitor film where the part melts at or below 140° C. In other embodiments, the said part melts at or below the temperature T=Tm−3° C., wherein Tm is the melting temperature of the capacitor film and/or the polypropylene material, and the part represents at least 45 percent by weight of the crystalline fraction. | 06-11-2009 |
20090149614 | CABLE LAYER ON POLYPROPYLENE BASIS WITH HIGH ELECTRICAL BREAKDOWN STRENGTH - Certain embodiments of the present technology provide a cable layer comprising a polypropylene material, where the cable layer and/or the polypropylene material comprise a crystalline fraction that crystallizes in a temperature range of 200 to 105° C., determined by stepwise isothermal segregation technique. The crystalline fraction comprises a part which during subsequent melting of the crystalline fraction at a melting rate of 10° C./min, the part melts at or below 140° C. and the part represents at least 10 percent by weight of the crystalline fraction. Certain embodiments also provide a process for the preparation of a cable layer, comprising providing the polypropylene material described herein and forming the polypropylene material into a cable layer. | 06-11-2009 |
20090208681 | Propylene Polymer Composition - A polypropylene with a low amount of impurities, in particular a low amount of aluminum and boron residues. | 08-20-2009 |
20100134953 | ELECTRICAL INSULATION FILM - The present invention relates to a capacitor film comprising a biaxially oriented polypropylene wherein a) said polypropylene has a draw ratio in machine direction of at least 4.0 and a draw ratio in transverse direction of at least 4.0, and b) said polypropylene has an electrical breakdown strength EB63% according to IEC 60243-part 1 (1988) of at least 300 kV/mm at a draw ratio in machine direction and in transverse direction of 4.0. | 06-03-2010 |
20110040061 | SHORT-CHAIN BRANCHED POLYPROPYLENE - A short-chain-branched polypropylene having xylene solubles of at least 0.5 percent by weight is provided. In certain embodiments the polypropylene has a strain hardening index of at least 0.15 as measured by a deformation rate of 1.00 s | 02-17-2011 |
20120259076 | Process for Olefin Polymerization - The present application provides a process for polymerizing at least one olefin in the presence of a polymerization catalyst, including: (A) continuously introducing a first liquid with a transition metal compound, an organometallic compound, and a solvent and a second liquid into an emulsification stage, (B) continuously withdrawing the emulsion and directing it into a solidification stage to form a slurry with a solid polymerization catalyst component, (C) continuously recovering the solid polymerization catalyst component, (D) directing the solid polymerization catalyst component into a first prepolymerization stage with a monomer and a second liquid to form a slurry, (E) recovering a prepolymerized solid polymerization catalyst component, (F) continuously introducing the prepolymerized solid polymerization catalyst component into a second prepolymerization stage with an olefin monomer to form a prepolymerized catalyst, and (G) continuously withdrawing the prepolymerized catalyst and directing it into a subsequent polymerization stage with at least one olefin monomer. | 10-11-2012 |
20120277384 | PREPARATION OF POLYPROPYLENE IN THE PRESENCE OF A SINGLE-SITE CATALYST - Process for the preparation of a polypropylene, wherein propylene is polymerised optionally with a comonomer selected from the group consisting of ethylene, a C4-C20 α-olefin and mixtures thereof, in the presence of a catalyst system comprising solid catalyst particles, wherein the solid catalyst particles (a) comprise a transition metal compound of formula (I) L | 11-01-2012 |
20130018156 | CATALYSTSAANM Resconi; LuigiAACI FerrarraAACO ITAAGP Resconi; Luigi Ferrarra ITAANM Castro; PascalAACI HelsinkiAACO FIAAGP Castro; Pascal Helsinki FIAANM Huhtanen; LauriAACI LoviisaAACO FIAAGP Huhtanen; Lauri Loviisa FI - A solid particulate catalyst free from an external carrier comprising: | 01-17-2013 |
20130116394 | SOLID PARTICULATE CATALYSTS COMPRISING BRIDGED METALLOCENES - Solid, particulate catalysts comprising bridged his indenyl n-ligands are disclosed, together with methods for the preparation and use thereat for example, in olefin polymerization. | 05-09-2013 |
20130131291 | SOLID PARTICULATE CATALYSTS COMPRISING BRIDGED METALLOCENES - A polypropylene homopolymer with a melting point of less than 147° C., a percentage of 2.1 errors of at least 1% and a xylene soluble fraction of less than 0.5 wt %. | 05-23-2013 |
20130217845 | PROCESS FOR OLEFIN POLYMERISATION USING GROUP 4 METALLOCENE AS CATALYSTS - A process for the preparation of a random propylene copolymer comprising polymerising propylene and at least one C2-10 alpha olefin (especially ethylene) in the presence of a catalyst; wherein said catalyst comprises: (i) a complex of formula (I): wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′ | 08-22-2013 |
20130289229 | CATALYSTS - A complex of formula (I): wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′ | 10-31-2013 |