US 12,344,713 B2
Crosslinked polyphosphazene blends for gas separation membranes
David Hopkinson, Morgantown, WV (US); Victor Armanda Kusuma, Pittsburgh, PA (US); Surendar R. Venna, Pittsburgh, TX (US); Joshua S. McNally, Idaho Falls, ID (US); Christopher J. Orme, Firth, ID (US); and Frederick F. Stewart, Idaho Falls, ID (US)
Assigned to Energy, United States Department of, Washington, DC (US)
Filed by Energy, United States Department of, Washington, DC (US)
Filed on Jul. 27, 2023, as Appl. No. 18/227,072.
Application 18/227,072 is a division of application No. 16/543,928, filed on Aug. 19, 2019, granted, now 11,866,555.
Prior Publication US 2023/0383063 A1, Nov. 30, 2023
Int. Cl. B01D 53/58 (2006.01); B01D 53/14 (2006.01); B01D 71/58 (2006.01); C08G 79/025 (2016.01); C08K 5/37 (2006.01); C08K 5/548 (2006.01); C08L 71/08 (2006.01); C08L 79/08 (2006.01); C08L 81/06 (2006.01); C08L 85/02 (2006.01); C09B 47/04 (2006.01)
CPC C08G 79/025 (2013.01) [B01D 53/1475 (2013.01); B01D 71/58 (2013.01); C08K 5/37 (2013.01); C08K 5/548 (2013.01); C08L 71/08 (2013.01); C08L 79/08 (2013.01); C08L 81/06 (2013.01); C08L 85/02 (2013.01); C09B 47/04 (2013.01); B01D 2256/24 (2013.01); B01D 2257/504 (2013.01); C08L 2312/00 (2013.01)] 16 Claims
 
1. A composition comprising at least a first polyphosphazene and a second polyphosphazene,
wherein the first polyphosphazene has the formula

OG Complex Work Unit Chemistry
where R comprises 50% to 95% ethoxylate and 5% to 50% aryloxy, and
where at least a portion of R comprises a crosslinked functional group;
wherein the second polyphosphazene has the formula

OG Complex Work Unit Chemistry
where R′ are aryloxy groups, and where at least a portion of R′ comprises a crosslinked functional group; and
wherein the first polyphosphazene and the second polyphosphazene are bound by a crosslinking agent where the crosslinking agent comprised two or more thiol groups prior to undergoing crosslinking.