US 9,809,516 B2
Method for storing tetrafluoropropene and container for storing tetrafluoropropene
Masato Fukushima, Tokyo (JP); Masaaki Tsuzaki, Tokyo (JP); and Maki Shigematsu, Tokyo (JP)
Assigned to ASAHI GLASS COMPANY, LIMITED, Tokyo (JP)
Filed by ASAHI GLASS COMPANY, LIMITED, Tokyo (JP)
Filed on Apr. 5, 2017, as Appl. No. 15/480,024.
Application 15/185,584 is a division of application No. 14/524,629, filed on Oct. 27, 2014, granted, now 9,428,430.
Application 15/480,024 is a continuation of application No. 15/185,584, filed on Jun. 17, 2016.
Application 14/524,629 is a continuation of application No. PCT/JP2013/061678, filed on Apr. 19, 2013.
Claims priority of application No. 2012-103184 (JP), filed on Apr. 27, 2012.
Prior Publication US 2017/0204029 A1, Jul. 20, 2017
This patent is subject to a terminal disclaimer.
Int. Cl. F17C 5/00 (2006.01); F17C 5/02 (2006.01); F17C 5/04 (2006.01); F17C 5/06 (2006.01); C07C 21/18 (2006.01); C07C 17/38 (2006.01); F17C 1/00 (2006.01)
CPC C07C 21/18 (2013.01) [C07C 17/38 (2013.01); F17C 1/00 (2013.01); F17C 2203/0643 (2013.01); F17C 2203/0646 (2013.01); F17C 2203/0648 (2013.01); F17C 2221/03 (2013.01)] 4 Claims
 
1. A closed container, containing tetrafluoropropene in a gaseous-liquid state comprising a gas phase and a liquid phase,
wherein
an oxygen concentration in the gas phase is at least 3 vol ppm and less than 3,000 vol ppm at a temperature of 25° C., and
the tetrafluoropropene comprises at least one compound selected from the group consisting of trans-1,3,3,3-tetrafluoropropene, cis-1,3,3,3-tetrafluoropropene, trans-1,2,3,3-tetrafluoropropene, cis-1,2,3,3-tetrafluoropropene, 1, 1,3,3-tetrafluoropropene, 1, 1,2,3-tetrafluoropropene, and 2,3,3,3-tetrafluoropropene.