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:
Oct. 21, 2008
Filed:
Nov. 23, 2004
Donna Sue Davis, Beaumont, TX (US);
Donna Sue Davis, Beaumont, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
A method of selecting polyethylene components for a polyethylene composition having an improved Vicat softening point comprising blending at least a first polyethylene having a first density and a second polyethylene having a second density to form the polyethylene composition, wherein the first density is greater than the second density, and determining a first Vicat softening point (V) of the composition measured, and calculating a second Vicat softening point (V) of the composition using the formula=[Σ{W(Vicat softening point of the first polyethylene)+W(Vicat softening point of the second polyethylene) . . . W(Vicat softening point of the nth polyethylene)}],wherein Wis the weight fraction of the first polyethylene, Wis the weight fraction of the second polyethylene and Wis the weight fraction of the nth polyethylene, n ranges from 2 to 10 and W+W. . . +W=1.0; comparing Vand V; selecting the polyethylene components such that Vis less than Vfor the polyethylene composition.