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. 09, 2001
Filed:
Dec. 04, 1998
Harilaos Mavridis, Cincinnati, OH (US);
Mark K. Reinking, Mason, OH (US);
Ramesh N. Shroff, Cincinnati, OH (US);
Joel A. Mutchler, Morris, IL (US);
Charles S. Holland, Coal City, IL (US);
Keta M. Lindstrom, Channahon, IL (US);
Kiran M. Gupte, Naperville, IL (US);
Michael H. Treptau, Channahon, IL (US);
Francis M. Mirabella, Mason, OH (US);
Equistar Chemicals, LP, Houston, TX (US);
Abstract
The present invention provides an ethylene copolymer resin that has unique melt elastic properties not observed in ethylene copolymers heretofore known. Specifically, the ethylene copolymer resin of the present invention when in pelletized form has a reduction in melt elasticity (ER) of 10% or more to a final value of 1.0 or less upon rheometric low shear modification or solution dissolution. Moreover, the resin of the present invention when in reactor-made form exhibits at least a partially reversible increase of 10% or more in ER when pelletizing the same. An ethylene polymerization catalyst, a process of preparing the ethylene copolymer resin and a high-impact film are also provided herein.