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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.:

US 11642621 B1

PDFFull Text
Date of Patent:
May. 09, 2023

Filed:

Oct. 29, 2018

Acidic gas separation membrane sheet and manufacturing method therefor

Applicant:

Sumitomo Chemical Company, Limited, Tokyo, JP;

Inventors:

Hironori Takemoto, Osaka, JP;

Kohei Yamamoto, Niihama, JP;

Shohei Kasahara, Osaka, JP;

Osamu Hirose, Niihama, JP;

Assignee:

SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;

Attorney:

McDermott Will & Emery LLP

Primary Examiner:

Michael M Bernshteyn

Int. Cl.
CPC ...
B01D 53/22 (2006.01); C08J 7/04 (2020.01); B01D 63/10 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 69/12 (2006.01); B01D 69/14 (2006.01); B01D 71/36 (2006.01); B01D 71/40 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B32B 37/20 (2006.01); B32B 38/16 (2006.01); C08J 5/18 (2006.01); B32B 38/00 (2006.01);
U.S. Cl.
CPC ...
B01D 53/228 (2013.01); B01D 63/10 (2013.01); B01D 67/0095 (2013.01); B01D 69/02 (2013.01); B01D 69/12 (2013.01); B01D 69/142 (2013.01); B01D 71/36 (2013.01); B01D 71/40 (2013.01); B32B 27/08 (2013.01); B32B 27/322 (2013.01); B32B 37/203 (2013.01); B32B 38/164 (2013.01); C08J 5/18 (2013.01); C08J 7/0427 (2020.01); B01D 2323/50 (2013.01); B01D 2325/36 (2013.01); B01D 2325/38 (2013.01); B32B 2038/166 (2013.01); B32B 2250/02 (2013.01); B32B 2250/24 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2305/026 (2013.01); B32B 2307/724 (2013.01); B32B 2307/728 (2013.01); B32B 2307/73 (2013.01); B32B 2309/60 (2013.01); B32B 2327/18 (2013.01); B32B 2333/04 (2013.01); C08J 2327/18 (2013.01); C08J 2333/02 (2013.01);
Abstract

An acidic gas separation membrane sheet causes an acidic gas to selectively permeate therethrough. The acidic gas separation membrane sheet includes a first porous layer, a hydrophilic resin composition layer, and a second porous layer in this order. A second peel strength between the second porous layer and the hydrophilic resin composition layer is less than a first peel strength between the first porous layer and the hydrophilic resin composition layer. An average value of the second peel strength is within a range of greater than or equal to 5 N/m and less than or equal to 500 N/m.

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