US 12,222,310 B2
Magnesium ion selective membranes
John Benco, Holliston, MA (US); and Robert Bergquist, Middleboro, MA (US)
Assigned to Siemens Healthcare Diagnostics Inc., Tarrytown, NY (US)
Filed by Siemens Healthcare Diagnostics Inc., Tarrytown, NY (US)
Filed on Oct. 10, 2023, as Appl. No. 18/484,011.
Application 17/174,482 is a division of application No. 15/547,951, filed on Aug. 1, 2017, abandoned.
Application 18/484,011 is a continuation of application No. 17/174,482, filed on Feb. 12, 2021, granted, now 11,821,867.
Application 15/547,951 is a continuation of application No. PCT/US2016/015929, filed on Feb. 1, 2016.
Claims priority of provisional application 62/239,492, filed on Oct. 9, 2015.
Claims priority of provisional application 62/111,293, filed on Feb. 3, 2015.
Prior Publication US 2024/0068984 A1, Feb. 29, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 27/333 (2006.01)
CPC G01N 27/3335 (2013.01) 19 Claims
OG exemplary drawing
 
1. A magnesium ion selective membrane that has magnesium selectivity over calcium, the magnesium ion selective membrane comprising:
a polymer material;
a magnesium-selective material comprising a single ionophore, wherein the ionophore comprises a triamide compound; and
a blend of two or more plasticizers, wherein at least one plasticizer comprises a measured log P value of greater than about 5.8 and less than about 12.8, wherein each plasticizer comprises a nitrophenyl group and hydrophobic chain extending therefrom with a structure of:

OG Complex Work Unit Chemistry
wherein R1 comprises a straight-chain alkyl group having 10 to 14 carbons or comprises a 12-(4-ethyl-phenyl)-dodecyl group.