Metalchelating, hydrophilic polymer
Patent 5141966 Issued on August 25, 1992. Estimated Expiration Date: 
December 11, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 11, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3582505 3899472 Polymer bound multidentate complexes Polymer bound multidentate complexes Polymer bound multidentate complexes Ion adsorbent for metals having a coordination number greater than two Patent #: 4423158 InventorAssigneeApplicationNo. 625399 filed on 12/11/1990US Classes:521/32, Treated with nitrogen-containing material521/25, ION-EXCHANGE POLYMER OR PROCESS OF PREPARING521/33, Treated with sulfur-containing material521/34, Solid polymer derived from at least one 1,2-epoxy containing reactant521/35, Solid polymer derived from aldehyde or derivative521/36, Treated with nitrogen-containing material521/37, Treated with sulfur-containing reactant525/61, Chemical modification utilizing a chemical treating agent525/329.4, Polymer derived from acrylamide or methacrylamide monomer525/329.7, Polymer derived from acrylic or methacrylic acids, acid halides or salt monomers525/329.8, Sulfur or phosphorus containing chemical treating agent525/329.9, Nitrogen containing chemical treating agent525/420, Solid polymer derived from an amino carboxylic acid or derivative; from a polyamine and a polycarboxylic acid or derivative; from at least one lactam; or from a polyamine salt of a polycarboxylic acid536/56, Cellulose or derivative536/102, Starch or derivative536/112Dextran or derivativeExaminersPrimary: Schofer, Joseph L.Assistant: Zitomer, Fred Attorney, Agent or FirmInternational ClassesB01J 037/08B01J 039/18 Foreign Application Priority Data1989-12-19 SEAbstractThe invention concerns a polymer product for immobilizing of metal ions, adsorption, and the like, with the structureP--X--A--Qwherein P is a hydrophilic polymer with a molecular weight of more than 3 000 Daltons. X is a heteroatom, O, S or N, A is an atom sequence with at least 3 carbon atoms, and Q is a group with at least two branches with terminal, metal, metal chelate forming substituents, each having at least two hetero atoms, N, O or S, separated by two or at most three carbon atoms in a sequence or Q is a macrocyclic ring with at least 8 and not more than 30 atoms, at least 3 of which are nitrogen atoms, in sequence in the ring, and the preparation thereof which is done by activating a hydrophilic polymer with epoxi or vinylsulfone or inserting of aldehyde groups, couupling with tris-(2-aminoethyl)-amin and treating with reagents chosen from -haloalkanoate, -holoalkanoylhalogenide, o-amino- or hydroxysubstituted aromatic or heteroaromatic aldehyde, dialdehyde or diketone and ring-closing of at least two terminal N with a bridge.Field of SearchION-EXCHANGE POLYMER OR PROCESS OF PREPARINGTreated with nitrogen-containing material Chemically treated solid polymer Solid polymer derived from an amino carboxylic acid or derivative; from a polyamine and a polycarboxylic acid or derivative; from at least one lactam; or from a polyamine salt of a polycarboxylic acid Chemical modification utilizing a chemical treating agent |
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