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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 14
521/34 Solid polymer derived from at least one 1,2-epoxy containing reactant 35
521/31 Solid polymer derived from ethylenically unsaturated reactant only 228


Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
7435498 Polymer electrolyte membranes crosslinked by nitrile trimerization Oct. 14, 2008
7399792 Solid reagents Jul. 15, 2008
7390853 Solid reagents Jun. 24, 2008
7368505 Graft copolymers May. 6, 2008
7332530 Proton-conducting polymer membrane comprising a polymer with sulphonic acid groups and use thereof in fuel cells Feb. 19, 2008
7323109 Composition comprising metal-ion sequestrant Jan. 29, 2008
7291312 Ozone removing material and method for preparing the same Nov. 6, 2007
7279244 Fuel cell, polyelectrolyte and ion-exchange resin use for same Oct. 9, 2007
7265159 Monodisperse anion exchangers Sep. 4, 2007
7261879 Iodinated anion exchange resin and process for preparing same Aug. 28, 2007
7169822 Polymeric actuator Jan. 30, 2007
7163964 Method for preparing an ion exchange media Jan. 16, 2007
7112614 Crosslinked polymer Sep. 26, 2006
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
7077964 Process for preparing monodisperse ion exchangers having chelating functional Jul. 18, 2006
7037949 Ion-exchange resin membrane and method for producing the same May. 2, 2006
7022744 Ion exchanger for lipoproteins separation and lipoproteins separation method using the same Apr. 4, 2006
7022743 Fuel cell, polyelectrolyte and ion-exchange resin used for same Apr. 4, 2006
7001929 Proton conductive membrane having improved thermal stability Feb. 21, 2006
6986960 Poly (arylene ether sulfone) having sulfoalkoxy group, process of producing the same, and polymer electrolyte membrane comprising the same Jan. 17, 2006
6962968 Purification of macrocyclic oligoesters Nov. 8, 2005
6930133 Low density polymer beads Aug. 16, 2005
6919382 Preparation and uses of conjugated solid supports for boronic acids Jul. 19, 2005
6911483 Ion exchangers Jun. 28, 2005
6875415 Resin preconditioning methods using carbon dioxide and methods for purifying hydrogen peroxide Apr. 5, 2005
6869652 Porous polymer/carrier solid phase reactants, method for producing same and the use thereof Mar. 22, 2005
6864314 Block polymers, compositions and methods of use for foams, laundry detergents, shower rinses and coagulants Mar. 8, 2005
6828353 Ion-exchange polymers Dec. 7, 2004
6790553 Method for producing bridged polymer membrane and fuel cell Sep. 14, 2004
6780893 Anion exchanger and process for producing anion exchange membrane Aug. 24, 2004
6699913 Process for preparing monodisperse anion exchangers having strongly basic functional groups Mar. 2, 2004
6696503 Process for preparing crosslinked ion exchangers based on unsaturated aliphatic nitriles Feb. 24, 2004
6689820 Anion exchanger, process for producing same, and its use Feb. 10, 2004
6680346 Phosphorus atom-containing fluorinated cation exchange membrane and proton conduction type fuel cell using the same Jan. 20, 2004
6649663 Process for preparing monodisperse ion exchangers having chelating functional groups and the use thereof Nov. 18, 2003
6602497 Strictly alternating poly(alkylene oxide ether) copolymers Aug. 5, 2003
6582811 Method of and material for purification of physical liquids of organism, and method of producing the material Jun. 24, 2003
6569911 Manufacturing method and article produced by the method May. 27, 2003
6569910 Ion exchange resins and methods of making the same May. 27, 2003
6521340 Sulfur-containing aliphatic polymer for the selective absorption of dissolved metal species Feb. 18, 2003
6504021 Ion exchange method for DNA purification Jan. 7, 2003
6403177 Use of tetraphenylborate for extraction of ammonium ions and amines from water Jun. 11, 2002
6359019 Graft polymeric membranes and ion-exchange membranes formed therefrom Mar. 19, 2002
6329435 Process for preparing monodisperse, crosslinked bead polymers having thiourea groups and their use for adsorbing metal compounds Dec. 11, 2001
6221923 Cross-linking of modified engineering thermoplastics Apr. 24, 2001
6136424 Method of and material for purification of physiological liquids of organism, and method of producing the material Oct. 24, 2000
6090288 Process for chromatographic separation of peptides and nucleic acid, and new high affinity ion exchange matrix Jul. 18, 2000
6060526 Mixed bed ion exchange resin system and method of preparation May. 9, 2000
6059975 Bifunctional anion-exchange resins with improved selectivity and exchange kinetics May. 9, 2000

1 2 3 4


 
 
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