POLYMERS FROM RENEWABLE RESOURCES .5. SYNTHESIS AND CHARACTERIZATION OF THERMOSETTING RESINS DERIVED FROM CASHEW NUT SHELL LIQUID (CNSL)-FURFURAL-SUBSTITUTED AROMATIC-COMPOUNDS

A number of resins were synthesized by reacting cardanol, a byproduct of the cashew industry, with furfural and substituted aromatic compoun ds in the presence of acid and basic catalysts. The resins were charac terized by IR and NMR spectra and shown to be selective ion exchangers for certain metal ions. A batch equilibrium method was used for study ing the selectivity of the metal ions. The thermal behavior of the res ins was also studied. A plausible degradation mechanism is suggested. (C) 1994 John Wiley and Sons, Inc.