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:
Dec. 20, 2011
Filed:
Sep. 29, 2008
Giampaolo Pellegatti, Boara, IT;
Paolo Goberti, Vigarano Mainarda, IT;
Letizia Baraldi, S. Bartolomeo in Bosco, IT;
Kazuhiko Minowa, Kawasaki, JP;
Yukihiro Hisanaga, Kawasaki, JP;
Giampaolo Pellegatti, Boara, IT;
Paolo Goberti, Vigarano Mainarda, IT;
Letizia Baraldi, S. Bartolomeo in Bosco, IT;
Kazuhiko Minowa, Kawasaki, JP;
Yukihiro Hisanaga, Kawasaki, JP;
Basell Poliolefine Italia s.r.l., Milan, IT;
Abstract
Polyolefin composition comprising, in percent by weight: A) 50-75% of a blend of polymers (PP) and (EC), wherein (PP) is selected from the group consisting of: (i) propylene homopolymers; (ii) copolymers of propylene; (iii) combinations of said homopolymers (i) and copolymers (ii); (EC) is a copolymer of ethylene and propylene or CH═CHR alpha-olefin(s), where R is a 2-8 carbon alkyl radical, or a copolymer of ethylene, propylene and the said CH═CHR alpha-olefin(s), containing from 20 to 35%, of ethylene; and B) 25-50% of a copolymer (EC) of ethylene and propylene or CH═CHR alpha-olefin(s), where R is a 2-8 carbon alkyl radical, or a copolymer of ethylene, propylene and the said CH═CHR alpha-olefin(s), containing from 40 to 60% of ethylene; in which composition the copolymer component (EC) is present in amounts from 23 to 45% with respect to the total weight of (A), and the intrinsic viscosity [η] of the fraction XS soluble in xylene at room temperature, referred to the total weight of (A)+(B), is of 3.5 dl/g or more.