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:
Apr. 12, 2005
Filed:
Feb. 09, 2004
Hoon Sik Kim, Seoul, KR;
Yong Soo Kang, Seoul, KR;
Byung Gwon Lee, Seoul, KR;
Hyun Joo Lee, Seoul, KR;
Jae Hee Ryu, Seoul, KR;
Hoon Sik Kim, Seoul, KR;
Yong Soo Kang, Seoul, KR;
Byung Gwon Lee, Seoul, KR;
Hyun Joo Lee, Seoul, KR;
Jae Hee Ryu, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
The present invention relates to polymer membranes for separating olefins from paraffins which have the similar molecular size and close boiling point. More particularly, it relates to a silver salt-containing facilitated transport membrane for olefin separation, and also a method for producing the same. An object of the present invention is to provide a silver salt-containing facilitated transport membrane for olefin separation having improved stability, and also a method for preparing the same, which exhibits no deterioration in membrane performance even when operated for an extended period of time. The facilitated transport membrane for olefin/paraffin separation of the present invention comprises a polymer, a silver salt, and a phthalate compound represented by the following formula (1)wherein R denotes an alkyl group of 2 to 8 carbon atoms or a phenyl group.