Preparation of in situ‐modified cyclohexanone‐formaldehyde and acetophenone‐formaldehyde resins with compounds such as diphenols, melamine, and p‐toluene sulfonamide were studied. Modification of acetophenone‐formaldehyde resins with hydroxylamine, semicarbazide, phenylhydrazine, phthalic anhydride, and acetic anhydride was also studied. Melting points, solubilities in organic solvents, and FTIR and NMR spectra of modified resins were determined.
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Kızılcan et al. (1993) studied this question.
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