A macroreticular resin (YCH2CHAC2)** containing acetylacetone group can be prepared from macroporous polystyrene (crosslinked with 6% divinylenzene) by first chloromethylation followed by reaction with acetylacetonate salt of nickel, or sodium or tetrabutylammonium ion. The use of nickel acetylaoetonate was found to be the method of choice, according to analyses of the resin with chelation tests, elemental analyses and infrared spectra. The resin YCH2CHAc2 can chelate with Fe3+ in the 58% to 87% range (from 4 mmol Fe3+/mL aqueous or acetone solution respectively) or with Ni2+ up to 0.072 mmol Ni/g resin (from 0.1 mmol Ni2+/mL aqueous solution). Factors such as pH, concentration, stirring etc. on chelation were investigated. Specific surfaces, thermal stability and swell capacity of resins have been measured. ** Y = PS-DVB resin.

Key words: APPLICATION, EXTRACTIVE AGENT, POLYSTYRENE, PENTANEDIONE P, CHELATE COMPLEX EXTRACTION, COORDINATION POLYMER