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Class Information
Number: 521/30
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
Description: Subject matter wherein a solid polymer is ionically modified by using a reactive chemical agent so as to form an ion-exchange polymer.

Sub-classes under this class:

Class Number Class Name Patents
521/35 Solid polymer derived from aldehyde or derivative 16
521/34 Solid polymer derived from at least one 1,2-epoxy containing reactant 37
521/31 Solid polymer derived from ethylenically unsaturated reactant only 254

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8686054 Filled nanoporous polymer membrane composites for protective clothing and methods for making them Apr. 1, 2014
8641949 Highly basic ionomers and membranes and anion/hydroxide exchange fuel cells comprising the ionomers and membranes Feb. 4, 2014
8629216 Ionomers with ionic groups in the side chain Jan. 14, 2014
8530530 Non-agglomerating mixed bed ion exchangers Sep. 10, 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
8440730 Method for improved removal of cations by means of chelating resins May. 14, 2013
8436055 Modified acidic ion-exchange resin and method for preparing bisphenol May. 7, 2013
8436057 Anion exchange membrane May. 7, 2013
8426479 Modified ion exchange resin and process for producing bisphenols Apr. 23, 2013
8399528 Method for improved removal of cations by means of chelating resins Mar. 19, 2013
8389639 Modified hyper-branched polymer and proton exchange membrane applied with the same, and method for manufacturing the proton exchange membrane Mar. 5, 2013
8357398 Benzonatate compositions and methods of use Jan. 22, 2013
8329766 Functional membrane and production method thereof, and electrolyte membrane for use in fuel cell and production method thereof Dec. 11, 2012
8304133 Method for producing a polymer electrolyte membrane Nov. 6, 2012
8273799 Amination of vinyl aromatic polymers with tertiary amines Sep. 25, 2012
8242042 OH-type anion-exchange hydrocarbon-based elastomer, use and production method thereof Aug. 14, 2012
8232324 Electrolyte membrane-forming curable resin composition, and preparation of electrolyte membrane and electrolyte membrane/electrode assembly Jul. 31, 2012
8222367 Polymers for use in fuel cell components Jul. 17, 2012
8211558 Crosslinked polymer electrolyte and method for producing same Jul. 3, 2012
8173713 Filled nanoporous polymer membrane composites for protective clothing and methods for making them May. 8, 2012
8163864 Sulfonated polyarylene compounds, membrane material made therefrom, method for the production thereof and use Apr. 24, 2012
8133928 Method for decanting preconditioned ion-exchange resin suspensions Mar. 13, 2012
8124660 Polymer electrolyte membrane comprising coordination polymer Feb. 28, 2012
8076379 Proton-conducting membrane and the use thereof Dec. 13, 2011
8058383 Arylene-fluorinated-sulfonimide ionomers and membranes for fuel cells Nov. 15, 2011
7968612 Modified ion exchange resin and process for producing bisphenols Jun. 28, 2011
7947748 Method for producing polymer beads of uniform size May. 24, 2011
7872084 Support for solid-phase synthesis and process for producing the same Jan. 18, 2011
7846982 Proton conducting electrolyte membrane having reduced methanol permeability and the use thereof in fuel cells Dec. 7, 2010
7846983 Proton conducting electrolyte membrane for use in high temperatures and the use thereof in fuel cells Dec. 7, 2010
7842733 Aromatic polyether copolymers and polymer blends and fuel cells comprising same Nov. 30, 2010
7842734 Poly(arylene ether) copolymers containing pyridine units as proton exchange membranes Nov. 30, 2010
7838167 Electrolyte polymer for fuel cells, process for its production, electrolyte membrane and membrane/electrode assembly Nov. 23, 2010
7834137 Process for producing aqueous fluorinated polymer dispersion having reduced content of fluorinated emulsifier Nov. 16, 2010
7803847 Fuel cell membrane electrode assembly Sep. 28, 2010
7771857 Proton-conducting polymer membrane Aug. 10, 2010
7765698 Method of making electret articles based on zeta potential Aug. 3, 2010
7754084 Heat-stable anion exchangers Jul. 13, 2010
7745030 Proton-conducting polymer membrane comprising sulfonic acid-containing polyazoles, and use thereof in fuel cells Jun. 29, 2010
7736778 Proton conducting polymer membrane comprising phosphonic acid groups containing polyazoles and the use thereof in fuel cells Jun. 15, 2010
7705061 Method for preparing an ion exchange media Apr. 27, 2010
7678863 Proton exchange membrane materials based on sulfonated poly (phthalazinones) Mar. 16, 2010
7659319 Sulfonated poly(phenylene sulfide) films as polyelectrolyte membranes Feb. 9, 2010
7625955 Porous polymeric article Dec. 1, 2009
7563828 Solid state proton conductor system derived from hybrid composite inorganic-organic multicomponent material Jul. 21, 2009
7547395 Macroporous gel, its preparation and its use Jun. 16, 2009
7544278 Ion exchange membranes, methods and processes for production thereof and uses in specific applications Jun. 9, 2009
7504036 Method of making and using modified anion exchange materials with metal inside the materials Mar. 17, 2009
7435498 Polymer electrolyte membranes crosslinked by nitrile trimerization Oct. 14, 2008
7399792 Solid reagents Jul. 15, 2008

1 2 3 4 5

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