The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2011
Filed:
Jan. 08, 2009
Manfred Stadlbauer, Linz, AT;
Eberhard Ernst, Unterweitersdorf, AT;
Lauri Huhtanen, Loviisa, FI;
Yvo Daniels, Zonhofen, BE;
Franck Jacobs, Evergem, BE;
Manfred Stadlbauer, Linz, AT;
Eberhard Ernst, Unterweitersdorf, AT;
Lauri Huhtanen, Loviisa, FI;
Yvo Daniels, Zonhofen, BE;
Franck Jacobs, Evergem, BE;
Borealis Technology Oy, Porvoo, FI;
Abstract
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.