Patent ID: 6225412
Filing Date: 2001-05-01
Classification: C08L

Abstract:
A plastic toughened plastic blend having excellent tensile toughness at -10.degree. C., comprising:(a) 65-75 weight percent of iPP; and(b) 25-35 weight percent of a metallocene catalyst produced polyethylene (mPE), said mPE having a CDBI in the range of 55-90%, a Mw/Mn.ltoreq.10, a melt index (MI) in the range of 1-30 dg/min;wherein the total extractables of said blend is less than 1% as determined by (xylene) 21 CFR 177.1520 (d) (4) (i);wherein an article fabricated from said plastic toughened plastic blend has a tensile toughness at -10.degree. C. at least 250% greater than that of a Ziegler-Natta catalyzed polyethylene (Z-N PE) iPP blend of substantially the same proportions as the mPE/iPP blend, and elongation at -10.degree. C. at least 40% greater than said iPP/Z-N PE blend, andwherein the modulus, as measured by ASTM D 368, of the mPE blend is equal to or greater than the modulus of said Z-N PE/iPP blend at -10.degree. C.