Synthesis of chloromethylstyrene‐tetraethyleneglycol dimethacrylate copolymer beads having various phenolic derivatives immobilized via amide bond and their antioxidation activity
2005
Resins having phenolic derivatives were prepared by treating a resin (RAS-4G), having benzylamino groups, with
benzoic acidscontaining phenolic hydroxyl groups. The RAS-4G was prepared by treating macroreticular chloromethylstyrene-tetraethyleneglycol dimethacrylate (4G) copolymer beads with
potassium phthalimidein N,N-dimethylformamide, followed by reflux in an ethanol/hydrazine monohydrate mixture. 4-Hydroxy
benzoic acid, (2,4-, 3,4-, and 3,5-)dihydroxy
benzoic acids, 3,4,5-trihydroxy
benzoic acid, etc., were used as
benzoic acidswith phenolic hydroxyl groups. The antioxidation ability of the resins having phenolic derivatives was investigated against the generation of
1,4-dioxanehydroperoxide. The resins showed high inhibition ability against the generation of hydroperoxide. In particular, the resin (RAS-4G-3,4-DHBA) having two phenolic hydroxyl groups had the highest inhibition ability. The resins were found to act as radical scavengers during the generation of
1,4-dioxanehydroperoxide by UV irradiation in the presence of oxygen. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 97: 2097–2104, 2005
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