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:
May. 04, 2010
Filed:
Dec. 12, 2001
Frank-olaf Mähling, Mannheim, DE;
Andreas Deckers, Flomborn, DE;
Gernot Köhler, Meckenheim, DE;
Axel Schmitz, Wesseling, DE;
Lars Wittkowski, Mannheim, DE;
Michael Hoppach, Büttelborn/Worfelden, DE;
Frank-Olaf Mähling, Mannheim, DE;
Andreas Deckers, Flomborn, DE;
Gernot Köhler, Meckenheim, DE;
Axel Schmitz, Wesseling, DE;
Lars Wittkowski, Mannheim, DE;
Michael Hoppach, Büttelborn/Worfelden, DE;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
A process for preparing ethylene homopolymers and copolymers in a tubular reactor having two or more polymerization zones at temperatures of between 150° C. and 350° C. and pressures in the range from 500 to 5000 bar, using oxygen as initiator, which comprises using, as molar mass regulator, one or more aliphatic ketones of the formula I, where the variable Ris a C-C-alkyl or C-C-cycloalkyl, ethylene homopolymers and copolymers obtainable therefrom and their user for producing injection-molded products in the cosmetics, medical and food sectors are described.