申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0340975A1
公开(公告)日:1989-11-08
A copolymer is prepared, by high pressure radical polymerisation, of, by wt, 40-95 % of ethylene, 5 -60 % of at least one aminoalkyl acrylate of the formula:
where R, is H or methyl, R2 and R3 each are C1 -4. alkyl and n is 1, 2, 3 or 4, and optionally also up to 20 % of another copolymerizable monomer, the copolymer having a number average molecular weight of 5000 to 50,000.
The copolymer is molded to pellets, beads, sheets, mats, cloth or cartridges and used as a filter to sorb metal ions, other than Fe or Co, from waste industrial aqueous solution containing metal ions, e.g. ions of Pd, Cr or U, the solution being adjusted to appropriate pH. The copolymer can be washed with water of different pH to recover the metal; or it can be burnt and the metal recovered from the ash.
通过高压自由基聚合法制备一种共聚物,按重量百分比计,由 40-95% 的乙烯、5-60% 的至少一种式中的氨基烷基丙烯酸酯组成:
式中 R 为 H 或甲基,R2 和 R3 分别为 C1 -4. 烷基,n 为 1、2、3 或 4,还可选择加入不超过 20% 的另一种可共聚单体,共聚物的平均分子量为 5000 至 50000。
将共聚物模塑成颗粒、珠子、薄片、垫子、布或滤芯,用作过滤器,从含有金属离子(如钯、铬或铀离子)的工业废水溶液中吸附除铁或钴以外的金属离子,溶液的 pH 值应调节到适当的水平。共聚物可以用不同 pH 值的水清洗,以回收金属;也可以焚烧,从灰烬中回收金属。