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:
Jan. 30, 2007
Filed:
Jun. 27, 2001
Applicants:
Guy Debras, Frasnes-lez-Gosselies, BE;
Marc Dupire, Mons, BE;
Jacques Michel, Seneffe, BE;
Inventors:
Assignee:
Total Petrochemicals Research Feluy, Feluy, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 3/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing polypropylene having increased melt strength, the process comprising irradiating polypropylene which has been polymerised using a Ziegler-Natta catalyst with an electron beam having an energy of at least 5 MeV and a radiation dose of at least 10 kGray and mechanically processing the irradiated polypropylene to form long chain branches on the polypropylene molecules, whereby the polypropylene has a melt flow index (MFI) of at least 25 dg/min.