METHOD OF MAKING MACROPOROUS CATION EXCHANGE RESINS

• Main Authors: HEMBRE, JAMES I, RASMUSSEN, JERALD K, FITZSIMONS, ROBERT T. JR, SESHADRI, KANNAN, SHANNON, SIMON K, WICKERT, PETER D
• Format: Patent
• Language: English; French
• Published: 31.01.2008
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING; WORKING-UP

Methods of making macroporous cation exchange resins are described. The macroporous cation exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. The macroporous cation exchange resins are prepared using an inverse suspension polymerization process in the presence of a water soluble, organic, aliphatic porogen having at least three hydroxy groups. La présente invention concerne des procédés de fabrication de résines échangeuses de cations macroporeuses. Les résines échangeuses de cations macroporeuses sont sous la forme de particules telles que des billes qui contiennent un matériau polymérique de type (méth)acrylique, réticulé hydrophile. Les résines échangeuses de cations macroporeuses sont préparées au moyen d'un procédé de polymérisation en suspension inverse en présence d'un agent porogène aliphatique organique hydrosoluble ayant au moins trois groupes hydroxy.