Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Reexamination Certificate
2010-11-01
2011-11-22
Bernshteyn, Michael M (Department: 1762)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
C521S027000, C528S167000, C528S168000, C528S169000, C528S373000, C528S397000, C528S398000, C528S399000
Reexamination Certificate
active
08063111
ABSTRACT:
Anion-conducing polymers and membranes with enhanced stability to aqueous alkali include a polymer backbone with attached sulfonium, phosphazenium, phosphazene, and guanidinium residues. Compositions also with enhanced stability to aqueous alkali include a support embedded with sulfonium, phosphazenium, and guanidinium salts.
REFERENCES:
Schwesinger et al. “Extremely Strong, Uncharged Auxiliary Bases; Monomeric and Polymer-Supported Polyaminophosphazenes (P-2-P-5),” Liebigs Annalen, 1996, vol. 7, p. 1055-1081.
Neagu et al., “Ionic Polymers VI. Chemical Stability of Strong Base Anion Exchangers in Aggressive Media,” Polymer Degradation and Stability, vol. 70. (Dec. 2000) pp. 463-468.
Varcoe et al., “Prospects for Alkaline Anion-Exchange Membranes in Low Temperature Fuel Cells,” Fuel Cells, vol. 4, No. 4 (Dec. 2004) pp. 1-14.
Becker et al., “New Organic Electrolytes: Tris(dialkylamino)sulfonium Salts: (R2N)3S+X-,” Journal of Electroanalytical Chemistry, vol. 248 (Jul. 1988) pp. 364-368.
Hartmann et al., “Chrystal Chemistry of Uncharged Phosphazene Bases, I. Structures of Two Hydrates and Acetate of Tris(dimethylamino)methyliminophosphorane,” Zeitschrift Fur Naturforschung, Section B, 51b (Oct. 1996) pp. 1369-1374.
Hartmann et al., “Chrystal Chemistry of Uncharged Phosphazene Bases, II. Structures of the Anhydrous Form and Two Hydrates of the Diphosphazene (Me(2)N)(3)P=N-(Me(2)N)(2)P=NH,” Zeitschrift Fur Naturforschung, Section B, 51b (Oct. 1996) pp. 1375-1380.
Zhou et al., “High Temperature Transport Properties of Polyphosphazene Membranes for Direct Methanol Fuel Cells,” Electrochemica Acta, vol. 48 (Jun. 2003) pp. 2173-2180.
Schwesinger et al., “Extremely Strong, Uncharged Auxiliary Bases; Monomeric and Polymer-Supported Polyaminophosphazenes (P-2-P-5),” Liebigs Annalen, vol. 7 (Jul. 1996) pp. 1055-1081.
Baskaran, et al., “Anionic polymerization of methylacrylate using tetrakis[tris(dimethylamino) phosphoranylidenamino]phosphonium (P5+) as counterion in tetrahydrofuran,” Macromol. Rapid Commun., 2000, pp. 390-395, vol. 21, No. 7.
Memeger, et al., “Poly(aminophosphazene)s and Protophosphatranes Mimic Classical Strong Anionic Base Catalysts in the Anionic Ring-Opening Polymerization of Lactams,” Macromelocules, 1996, pp. 6475-6480, vol. 29.
Pivovar Bryan S.
Thorn David L.
Bernshteyn Michael M
Borkowsky Samuel L.
Los Alamos National Security LLC
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