【摘要】 本文合成3α-甲基丙烯酸甲酯-二乙烯苯大孔共聚体(MMA-DVB),研完了诸因素对碱性水解反应的影响.结果表明,以10—100％糖醇为溶胀剂,以60％ NaOH热水溶液为水解剂,在150℃反应4—10小时,酯基水解率可达90—95％。制得的弱酸离子交换树脂,其交换容量为9meq/g。树脂机械强度良好。更多还原

【Abstract】 The macroreticular copolymer of α-methyl methacrylatedivinylbenzene with high strength was prepared under various conditions.It was found that the extent of hydrolytic reactions was influenced by the reaction conditions, such as the swelling agents, hydrolytic agents, reaction temperatures, reaction time and structure of the copolymers etc.A weakly acidic cation exchange resin of exchange capacity 9 meq/g was obtained by the hydrolysis of a copolymer of α-methyl methacrylate-divinylbenxene swollen in 10 -100% of furfuryl alcohol with a hot 60% sodium hydroxide solution at 150℃ for 4-10 hours. The copolymer was made by the suspension polymerization of 87.5-79.2% of methyl methacrylate and 6-10% of drvinylbenxene (48% purity) with 40-60% (based on monomers) of # 200 petrol as porogenic agent. The percentage of hydrolysis of the copolymer was 90-95%. The cation exchange resin thus prepared possessed good mechanical property and its principal properties is closed to that of the Amberlite IRC-50 made by Rohm and Haas company of the United States.Weakly acidic cation exchange resin was prepared by the hydrolytic reaction of the MMA-DVB macroreticular copolymer. The extent of hydrolysis of the ester was 90-95% and was influenced by the reaction conditions. The capacity of the resin was about 9 meq/g. The mechanical strength of the beads is good. The principal properties of the resin are closed to that of the Amberlite IRC-50 made by Rohm and Haas company of the United Staites.更多还原