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:
May. 27, 2014
Filed:
Jun. 28, 2012
Naomi Urakawa, Tokyo, JP;
Makoto Nakano, Chiba, JP;
Yasuhiro Kitahara, Kawasaki, JP;
Ryosuke Aburaki, Ichihara, JP;
Akihiro Matsuda, Yokohama, JP;
Naomi Urakawa, Tokyo, JP;
Makoto Nakano, Chiba, JP;
Yasuhiro Kitahara, Kawasaki, JP;
Ryosuke Aburaki, Ichihara, JP;
Akihiro Matsuda, Yokohama, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
The propylene-based polymer composition includes a specific amount of a propylene-based polymer (A) having a syndiotactic pentad fraction (rrrr fraction) of 85% or more and containing 90 to 100 mol % of a structural unit derived from propylene; a specific amount of a propylene-based copolymer (B) containing 40 to 89 mol % of a structural unit derived from propylene and 11 to 60 mol % of a structural unit derived from an α-olefin and satisfying a specific equation of intrinsic viscosity [η] and MFR; and specific amount(s) of at least one polymer of an olefin-based thermoplastic elastomer (C), a styrene-based elastomer (D), a propylene/ethylene/α-olefin copolymer (E) and an isotactic propylene-based polymer (F), and optionally an ethylene/vinyl acetate copolymer (G) and/or an ethylene-based polymer (H).