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:
Aug. 04, 2015
Filed:
Aug. 29, 2012
Nobuhisa Mikawa, Chiba, JP;
Motoyasu Yasui, Chiba, JP;
Akiyoshi Taguchi, Ichihara, JP;
Kazuto Sugiyama, Ichihara, JP;
Yasuhiro Kai, Otake, JP;
Kenji Sugimura, Iwakuni, JP;
Nobuhisa Mikawa, Chiba, JP;
Motoyasu Yasui, Chiba, JP;
Akiyoshi Taguchi, Ichihara, JP;
Kazuto Sugiyama, Ichihara, JP;
Yasuhiro Kai, Otake, JP;
Kenji Sugimura, Iwakuni, JP;
MITSUI CHEMICALS, INC., Tokyo, JP;
Abstract
There are provided a polyolefin resin composition having excellent mechanical properties and thermal resistance; a film formed of the polyolefin resin composition, which has excellent mechanical properties and thermal resistance and which is less likely to suffer from fisheyes; a microporous membrane having excellent permeability and shutdown properties in addition to the above-mentioned physical properties; and applications thereof. Such objects are accomplished by a polyolefin resin composition containing an ultra-high molecular weight ethylene polymer (A), a 4-methyl-1-pentene polymer or 3-methyl-1-pentene polymer (B), and a polymer of an olefin having 2 to 12 carbon atoms (C) at an intended ratio.