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. 22, 2002
Filed:
Sep. 18, 1998
Pradeep Jain, Lake Jackson, TX (US);
Lonnie G. Hazlitt, Lake Jackson, TX (US);
Jacquelyn A. deGroot, Lake Jackson, TX (US);
Kenneth W. Anderson, Lake Jackson, TX (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
The present invention pertains to an ethylene interpolymer composition characterized as having a narrow molecular weight distribution (MWD) and optimized compositional uniformity, a process for making such a composition and a fabricated article made from such composition. The novel composition is characterized as having at least two polymer components, the first component having an ATREF peak temperature, T and a viscosity average molecular weight, M , and the second component having an ATREF peak temperature, T , and a viscosity average molecular, M , wherein the temperature differential between T and T decreases with increased composition density and M /M is less than or equal to 1.2. The novel composition is further characterized as having a M /M of less than or equal to 3.3 as determined by gel permeation chromatography, an I /I >6.6, and a composition density less than 0.945 gram/cubic centimeter. The novel composition exhibits high, balanced toughness properties, good processibility and surprisingly improved optical properties and is particularly well-suited for use in applications such as lamination films trash can liners and heavy duty shipping bags, especially as a blown film.