Metal complexes of hydroxyquinoline and polymeric porous granules
Patent 3985540 Issued on October 12, 1976. Estimated Expiration Date: 
October 12, 1993. 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.
October 12, 1993. 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 3167473 3316173 3328256 3451801 InventorsAssigneeApplicationNo. 025290 filed on 04/02/1970US Classes:504/152, Heavy metal or aluminum containing active ingredient424/78.18, Polymer derived from ethylenic monomers only424/78.24, N-Vinyl-2-pyrrolidone427/400, Resin or rubber base428/402, Particulate matter (e.g., sphere, flake, etc.)504/155, Hetero ring includes nitrogen504/361, The resin is derived from ethylenically unsaturated monomer only (e.g., addition resins, natural rubbers, etc.)514/187, Quinolines or isoquinolines (including hydrogenated)521/142, Cellular product derived from ethylenically unsaturated reactants only521/150, From reactant containing two or more ethylenic unsaturated groups521/56, Particle which is expandible, process of preparing an expandible particle, or process of expanding a particle to form a cellular product521/921, PREPARING A NONPOLYURETHANE CELLULAR PARTICLE FROM A NONPARTICULATE MATERIAL525/279, Ethylenic reactant contains nitrogen heterocycle, e.g., pyridine, diazines, etc.525/283, Lactam525/296, Nitrogen atom is part of a carboxylic acid amide group525/326.9, Lactam monomer, e.g., vinyl pyrrolidone, etc.525/328.2, Polymer derived from monomer containing nitrogen other than: unsubstituted ammonium, acrylonitrile, acrylamide, methylolacrylamide and the corresponding methacryl materials525/329.4, Polymer derived from acrylamide or methacrylamide monomer525/360, Chemical treating agent contains elemental metal or metal-containing compound525/370, Contains Group IB (Cu, Ag, Au), IIB (Zn, Cd, Hg), IIIA (Al, Ga, In, Tl), IV (Ti, Zr, Hf, Ge, Sn, Pb), and VIII (Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Pt) elemental metal or compound thereof525/375, Contains nitrogen atom in a heterocyclic ring525/377, Nitrogen-containing compound contains at least one nitrile or isonitrile group; or a nitrogen-to-oxygen bond which is other than as an amine or ammonium salt526/264, Lactam monomer526/307.1N- substituted unsaturated hydrocarbon groupExaminersPrimary: Hollrah, Glennon H.Attorney, Agent or FirmAbstractMetal complexes of 8-hydroxyquinoline and polymeric water-insoluble but water-swellable cross-linked N-vinyllactam or N-alkyl-N-vinylamide polymers in the form of porous beads or granules and a process for preparing same. Such complexes are particularly suited for use as algicides, fungicides, slimicides, and bacteriocides in the treatment of water such as in gravity filtration systems, canisters or packed columns having the advantage of rapid throughput. The complexes may be prepared by adsorbing the hydroxyquinoline onto the cross-linked N-vinyllactam or N-alkyl-N-vinylamide in the form of porous beads or porous granules and subsequently forming the metallic complex in solution.Other References
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