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. 04, 2014
Filed:
Dec. 13, 2008
Joachim Berthold, Grassau, DE;
Diana (Nee Boos) Doetsch, Mainz, DE;
Gerhardus Meier, Frankfurt, DE;
Albert Weber, Cervello, ES;
Joachim Berthold, Grassau, DE;
Diana (nee Boos) Doetsch, Mainz, DE;
Gerhardus Meier, Frankfurt, DE;
Albert Weber, Cervello, ES;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
The invention relates to a polyethylene molding composition having a multimodal molecular mass distribution and comprising a first ethylene homopolymer fraction (I), a second ethylene copolymer fraction (II) and a third ethylene copolymer fraction (III). The molding composition has a density at a temperature of 23° C. in the range from 0.945 to 0.953 g/cm, an MFR (190° C./5 kg) in the range from 2 to 7 g/10 min and a viscosity number VNof the total mix of ethylene homopolymer fraction (I), copolymer fraction (II) and ethylene copolymer fraction (III), measured in accordance with ISO/R 1191 in decalin at a temperature of 135° C., in the range from 200 to 250 cm/g. The invention further relates to the use of such a molding composition for producing high-strength injection-molded screw cap closures for bottles comprising beverages, especially carbonated beverages.