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:
Sep. 24, 2002
Filed:
Sep. 11, 2000
Applicant:
Inventors:
Edward Quentin Clutton, Edinburgh, GB;
Philip Stephen Hope, Alva, GB;
Stephen Roy Partington, Walton-on-Thames, GB;
John Norman Reid Samson, Stirling, GB;
Assignee:
BP Chemicals Limited, London, GB;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08F 4/70 ;
U.S. Cl.
CPC ...
C08F / ; C08F 4/70 ;
Abstract
A polyethylene having the following properties: an annealed density D/weight average molecular weight M relationship defined by the equation D>1104.5M , and a Charpy Impact I/High Load Melt Index H relationship defined by the equation I>35.OH . Also, a polyethylene film having the following properties: a density of at least 957 kg/m ; a Dart Impact of at least 130 g; and a polydispersity of less than 12. Both may be made using a tridentate nitrogen-containing transition metal polymerization catalyst.