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:
Jul. 01, 2003
Filed:
Sep. 27, 2001
Junichiro Washiyama, Yokohama, JP;
Kazuhiko Minowa, Yokohama, JP;
Hiroshi Takenouchi, Kanagawa, JP;
Takeshi Nakajima, Tokyo, JP;
Masamitsu Yamauchi, Kawasaki, JP;
Yutaka Yokoyama, Ferrara, IT;
Anteo Pelliconi, Rovigo, IT;
Basell Poliolefine Italia S.p.A., Milan, IT;
Abstract
A masterbatch composition, a polyolefin composition prepared from the masterbatch and articles prepared from the polyolefin composition. The masterbatch contains (percent by weight) from 20% to 90% of A) a crystalline polypropylene containing from 25% to 75% of a fraction A having a melt flow rate MFR of from 0.5 to 10 g/10 min., and from 75% to 25% of a fraction A having a melt flow rate MFR such that MFR /MFR is from 30 to 2000; and from 10% to 80% of B) a copolymer of ethylene and at least one C -C &agr;-olefin, the copolymer containing from 10 to 70% of ethylene, the copolymer being soluble in xylene at room temperature, and having an intrinsic viscosity [&eegr;] of from 4 to 9 dl/g. Articles prepared from the polyolefin composition exhibit a good balance of physical properties and reduced surface defects such as tiger striping.