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US 8,026,305 B2Granted
Articles formed from nucleated polyethylene
AssigneeFina Technology, Inc.
InventorsMichael McLeod, John Ashbaugh, Cyril Chevillard, Gerhard Guenther, Ruby L. Curtis, Jay Nguyen, Juan Aguirre, Raleigh McBride, Ben Hicks
Life of this patent
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Abstract
Polymer articles and processes of forming the same are described herein. The processes generally include providing an ethylene based polymer, blending the ethylene based polymer with a modifier to form modified polyethylene and forming the modified polyethylene into a polymer article, wherein the polymer article exhibits a haze that is at least about 10% less than a polymer article prepared with a similarly modified polyethylene.
Claims20
A process of forming a polymer article comprising:
- providing an ethylene based polymer, wherein the ethylene based polymer exhibits a density of from about 0.920 g/cc to about 0.970 g/cc and wherein the ethylene based polymer is formed from a catalyst system selected from a metallocene catalyst comprising tetrahydroindenyl ligands and a Ziegler-Natta catalyst formed by contacting a magnesium dialkoxide compound with successively stronger chlorinating agents;
- blending the ethylene based polymer with a modifier to foam modified polyethylene, wherein the modifier is a nucleator comprising zinc stearate and a cyclohexane dicarboxylic acid calcium salt;
- and
- forming the modified polyethylene into a polymer article.
1 more element
Dependencies are inferred from the claim text.