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. 25, 2012
Filed:
Jan. 07, 2008
Takahisa Konishi, Osaka, JP;
Takuji Shintani, Osaka, JP;
Yushu Matsushita, Aichi, JP;
Atsushi Takano, Aichi, JP;
Takeshi Asari, Chiba, JP;
Takahisa Konishi, Osaka, JP;
Takuji Shintani, Osaka, JP;
Yushu Matsushita, Aichi, JP;
Atsushi Takano, Aichi, JP;
Takeshi Asari, Chiba, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
A process for producing a microporous polymeric object to improve the degree of freedom for its various properties, compared to conventional processes, includes: mixing a block copolymer made of three or more kinds of segments with a polymer, wherein one or more of the segments are made of monomer units having a first functional group forming ionic and/or hydrogen bond, the segments constitute a co-continuous structure having mutually-independent and continuous regions due to a phase separation based on incompatibility between the segments, and the polymer has, at other than polymer chain terminals, a second functional group forming such bond with the first functional group, thereby allowing the segments to associate with the polymer at many points; forming a co-continuous structure including a region composed of the polymer and the segments due to the phase separation; and removing the polymer from the region by weakening the bond between the functional groups.