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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 9957285 B1

PDFFull Text
Date of Patent:
May. 01, 2018

Filed:

Jul. 01, 2014

Metal complex, adsorbent, separating material, and 1, 3-butadiene separation method

Applicant:

Showa Denko K.k., Tokyo, JP;

Inventors:

Keisuke Kishida, Oita, JP;

Yoshihiro Watanabe, Oita, JP;

Yoshikuni Okumura, Oita, JP;

Assignee:

SHOWA DENKO K.K., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Jason M Greene

Int. Cl.
CPC ...
B01D 53/02 (2006.01); B01D 53/22 (2006.01); B01D 69/14 (2006.01); C07F 3/06 (2006.01); B01J 20/22 (2006.01); B01J 20/28 (2006.01); C07C 7/12 (2006.01); C07C 201/12 (2006.01); C07D 213/06 (2006.01); C07D 213/68 (2006.01); C07D 213/70 (2006.01); B01J 20/34 (2006.01); B01D 53/04 (2006.01); B01D 53/047 (2006.01);
U.S. Cl.
CPC ...
C07F 3/06 (2013.01); B01D 53/02 (2013.01); B01D 53/228 (2013.01); B01D 69/14 (2013.01); B01J 20/226 (2013.01); B01J 20/28035 (2013.01); B01J 20/3483 (2013.01); C07C 7/12 (2013.01); C07C 201/12 (2013.01); C07D 213/06 (2013.01); C07D 213/68 (2013.01); C07D 213/70 (2013.01); B01D 53/047 (2013.01); B01D 53/0462 (2013.01); B01D 2253/112 (2013.01); B01D 2253/20 (2013.01); B01D 2256/24 (2013.01); B01D 2257/7022 (2013.01); B01D 2325/12 (2013.01); Y02C 10/08 (2013.01);
Abstract

A separating material superior to conventional separating materials, and a separation method are provided, with which 1,3-butadiene is selectively separated and recovered from a mixed gas including 1,3-butadiene and C4 hydrocarbons other than 1,3-butadiene. A metal complex, which comprises a dicarboxylic acid compound (I) (see (I) below) represented by general formula (I), an ion of a metal such as beryllium, and a dipyridyl compound (II) represented by general formula (II), namely L-Z-L (II) (see L below), is characterized by including, as the dipyridyl compound (II), at least two different dipyridyl compounds (II). The metal complex is used as a 1,3-butadiene separating material. Formula (I) L is represented by any of the compounds below.

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