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Class Information
Number: 521/32
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Ion-exchange polymer or process of preparing > Chemically treated solid polymer > Solid polymer derived from ethylenically unsaturated reactant only > Treated with nitrogen-containing material
Description: Subject matter wherein the solid polymer is chemically treated with a nitrogen-containing material.

Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8686054 Filled nanoporous polymer membrane composites for protective clothing and methods for making them Apr. 1, 2014
8673988 Graft copolymers for ion exchange chromatography Mar. 18, 2014
8664282 Process to prepare crosslinkable trifluorostyrene polymers and membranes Mar. 4, 2014
8623928 Polymers of intrinsic microporosity containing tetrazole groups Jan. 7, 2014
8592493 Solid support with a grafted chain Nov. 26, 2013
8506818 Method for producing chelate resins Aug. 13, 2013
8476324 Method for manufacturing anion exchange resin, anion exchange resin, method for manufacturing cation exchange resin, cation exchange resin, mixed bed resin, and method for manufacturing ultrap Jul. 2, 2013
8470896 Acid block anion membrane Jun. 25, 2013
8440730 Method for improved removal of cations by means of chelating resins May. 14, 2013
8436057 Anion exchange membrane May. 7, 2013
8399528 Method for improved removal of cations by means of chelating resins Mar. 19, 2013
8273799 Amination of vinyl aromatic polymers with tertiary amines Sep. 25, 2012
8211950 Amphoteric ion exchangers Jul. 3, 2012
8177982 Method of producing monodisperse chelate resins May. 15, 2012
8173713 Filled nanoporous polymer membrane composites for protective clothing and methods for making them May. 8, 2012
8124660 Polymer electrolyte membrane comprising coordination polymer Feb. 28, 2012
7989514 Strong-acid cation exchange resins Aug. 2, 2011
7964651 Sulfonyl grafted heterocycle materials for proton conducting electrolytes Jun. 21, 2011
7829603 Stable trifluorostyrene containing compounds grafted to base polymers, and their use as polymer electrolyte membranes Nov. 9, 2010
7811694 Polymer electrolyte for a direct oxidation fuel cell, method of preparing the same, and direct oxidation fuel cell comprising the same Oct. 12, 2010
7803846 Highly durable polymer electrolytic membrane for a fuel cell having a cross-linked structure Sep. 28, 2010
7754084 Heat-stable anion exchangers Jul. 13, 2010
7737190 Process to prepare stable trifluorostyrene containing compounds grafted to base polymers using a solvent/water mixture Jun. 15, 2010
7625955 Porous polymeric article Dec. 1, 2009
7435498 Polymer electrolyte membranes crosslinked by nitrile trimerization Oct. 14, 2008
7416845 pH dependent ion exchange material, solid substrate having the material immobilized on its surface, and method of isolating a nucleic acid using the material or the solid substrate Aug. 26, 2008
7323109 Composition comprising metal-ion sequestrant Jan. 29, 2008
7320754 Method of preparing multi-modal anion-exchange ligands Jan. 22, 2008
7265159 Monodisperse anion exchangers Sep. 4, 2007
7232520 Ion exchange porous resins for solid phase extraction and chromatography Jun. 19, 2007
7169822 Polymeric actuator Jan. 30, 2007
7098252 Preparation of macroreticular polymers Aug. 29, 2006
7094469 Porous or non-porous substrate coated with an immobilized polymeric composition having sulfonyl groups and hydrophilic functional groups and process Aug. 22, 2006
7081484 Anion exchange membrane, process for its production and solution treating apparatus Jul. 25, 2006
7077964 Process for preparing monodisperse ion exchangers having chelating functional Jul. 18, 2006
7067059 Generation of ion exchanger media Jun. 27, 2006
7053129 Process for preparing monodisperse anion exchangers May. 30, 2006
6919382 Preparation and uses of conjugated solid supports for boronic acids Jul. 19, 2005
6911483 Ion exchangers Jun. 28, 2005
6881761 Porous polymer particle, anion exchanger, producing method thereof, column for ion chromatography, and method for measuring anions Apr. 19, 2005
6864314 Block polymers, compositions and methods of use for foams, laundry detergents, shower rinses and coagulants Mar. 8, 2005
6844371 Material having separating function Jan. 18, 2005
6841285 Impregnation of ion-exchange membranes to improve electrochemical fuel cell performance Jan. 11, 2005
6825386 Catalyst for bisphenol compound production and process for producing bisphenol compound with the catalyst Nov. 30, 2004
6759442 Packing material for solid phase extraction and solid phase extraction method Jul. 6, 2004
6740684 Process for producing a strong-acid cation exchange resin May. 25, 2004
6723758 Graft polymeric membranes and ion-exchange membranes formed therefrom Apr. 20, 2004
6699913 Process for preparing monodisperse anion exchangers having strongly basic functional groups Mar. 2, 2004
6696385 Method of preserving sulfonic acid-type cation-exchange resin modified with thiol-containing amine compound Feb. 24, 2004
6667349 Method for producing osmotically and mechanically stable gel-like anion exchangers Dec. 23, 2003

1 2 3 4 5 6 7

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