01-05-2014 дата публикации
Номер: US20140121349A1
A hydrogel composition is formed by conveying separate first and second liquid components subject to a selectively applied application pressure P(A) into an outlet path for mixing and discharge. A liquid flushing agent is automatically conveyed into the outlet path subject to a substantially constantly applied purge pressure P(P) when the application of P(A) is interrupted, to continuously flush residual hydrogel composition from the outlet path. 1. A monomer compound ligand comprising:{'sup': 1', '2', '3', '4, 'four pyridyl groups defined as pyridyl group Py, pyridyl group Py, pyridyl group Py, and pyridyl group Py; and'}a central linker portion; wherein:{'sup': 1', '2', '3', '4, 'pyridyl group Pyis covalently bonded to the central linker portion, pyridyl group Pyis covalently bonded to the central linker portion, pyridyl group Pyis covalently bonded to the central linker portion, and pyridyl group Pyis covalently bonded to the central linker portion; and'}{'sub': '2', 'the central linker portion includes at least one of a phenylenediamine group, a phenyl group, a terphenyl group, a biphenyl group, poly-aromatic hydrocarbon (PAH) group, or a (methylbenzene)group.'}2. The monomer compound of claim 1 , wherein the central linker portion comprises a phenylenediamine group and the phenylenediamine group has a 1 claim 1 ,4 (para) orientation of the first amine group and second amine group.3. The monomer compound of claim 1 , having the structure (PyPy)N—CH—N (PyPy).4. The monomer compound of claim 1 , wherein Pyand Pyare the same claim 1 , and Pyand Pyare the same.5. The monomer compound of claim 1 , wherein Py claim 1 , Py claim 1 , Py claim 1 , Pyare the same.6. The monomer compound of claim 1 , wherein the monomer compound is N claim 1 ,N claim 1 ,N′ claim 1 ,N′-tetra(4-pyridyl)-1 claim 1 ,4-phenylenediamine.7. The monomer compound of claim 1 , wherein the monomer compound is N claim 1 ,N-di(2-pyridyl)-N′ claim 1 ,N′-di(4-pyridyl)-1 claim 1 ,4-phenylenediamine.815-. ...
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