| 摘要 |
1536042 Hydrophilic ion-exchange resins CESKOSLOVENSKA AKADEMIE VED 27 May 1976 [5 June 1975] 22159/76 Heading C3P Ion-exchange resins are prepared by reaction between (A) a macroporous copolymer prepared by suspension copolymerization of (i) a hydroxy C 1-18 -alkyl acrylate or methacrylate, or an oligoglycol acrylate or methacrylate, with (ii) a divinyl cross-linking monomer such as ethylene glycol dimethacrylate, and (B) an addition compound of sulphuric acid, chlorosulphuric acid or metaphosphoric acid with pyridine or an alcohol. |
