Coating processes – With post-treatment of coating or coating material – Heating or drying
Reexamination Certificate
2005-04-12
2005-04-12
Pezzuto, Helen L. (Department: 1713)
Coating processes
With post-treatment of coating or coating material
Heating or drying
C521S027000, C521S031000, C210S638000, C210S651000, C427S384000, C427S385500
Reexamination Certificate
active
06878409
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.
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Kang Yong Soo
Kim Hoon Sik
Lee Byung Gwon
Lee Hyun Joo
Ryu Jae Hee
Finnegan Henderson Farabow Garrett & Dunner LLP
Korea Institute of Science and Technology
Pezzuto Helen L.
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