Polymeric resins functional groups

Ion-exchange resins are categorized by the nature of functional groups attached to a polymeric matrix, by the chemistry of the particular polymer in the matrix, and by the porosity of the polymeric matrix. There are four primary types of functionaHty strong acid, weak acid, strong base, and weak base. Another type consists of less common stmctures in specialty resins such as those which have chelating characteristics. 

Material produced by the reaction of relatively simple molecules with functional groups that allow their combination to proceed to high-molecular weights under suitable conditions formed by polymerization or polycondensation. Chemical reaction that takes place when a resin is activated. 

Can be used in variety of ways such as ion exchange resin, polymeric fire-retardants etc. depending on the functional group... 

Polymerization screening mns using porphyrin catalysts with different linker groups between the 700 Da polyethylene tail and the porphyrin core showed little variability. The catalytic activity for the 4 x 700 PE porphyrin catalysts with ether (5), ester (7) or polyether (8) linkers was nearly identical, with only small differences in the resin colors being noted (Figures 36.3 and 36.4). These results are consistent with literature findings that porphyrin CCT catalysts are relatively insensitive to functional groups on the equatorial plane. ... 

The group of Janda has presented a microwave-mediated oxazole synthesis utilizing /3-ketoestcrs bound to a novel polymeric resin [57]. The desired polymer support was prepared by transesterification reactions of tert-butyl /f-ketoesters and hydroxy-butyl-functionalized JandaJel resin and subsequent standard diazo transfer. The resulting a-diazo /f-ketoesters were employed for the synthesis of an array of oxa-zoles (Scheme 7.41). 

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