摘要:
The present invention relates to a process for preparing crosslinked ion exchangers with a homogeneous network structure based on unsaturated aliphatic nitriles in the presence of film-forming protective colloids.
摘要:
The present invention relates to a method of producing novel monodisperse chelate resins based on crosslinked polymer beads containing aminomethyl groups and/or aminomethyl nitrogen heterocyclic groups that have a high uptake capacity for heavy metals and rapid kinetics.
摘要:
The present invention relates to novel ion exchangers comprising carboxyl groups and also —(CH2)mNR1R2 groups having improved exchange kinetics and selectivity, a method for their production and also use thereof for the adsorption of metals, in particular arsenic, when these are additionally loaded with iron oxide/iron oxyhydroxide.
摘要翻译:本发明涉及包含羧基的新型离子交换剂以及具有改进的交换动力学和选择性的 - (CH 2)m N R 1 R 2基团,其生产方法以及它们用于吸附金属,特别是砷时,当这些还附加时 与氧化铁/羟基氧化铁。
摘要:
The present invention relates to novel ion exchangers comprising carboxyl groups and also —(CH2)mNR1R2 groups having improved exchange kinetics and selectivity, a method for their production and also use thereof for the adsorption of metals, in particular arsenic, when these are additionally loaded with iron oxide/iron oxyhydroxide.
摘要翻译:本发明涉及包含羧基的新型离子交换剂,并且还涉及 - (CH 2)2 NR 1 R 2 R 2 具有改进的交换动力学和选择性的组,其制备方法,并且还用于当这些还附加氧化铁/羟基氧化铁时金属的吸附,特别是砷。
摘要:
The present invention relates to a method of producing novel monodisperse chelate resins based on crosslinked polymer beads containing aminomethyl groups and/or aminomethyl nitrogen heterocyclic groups that have a high uptake capacity for heavy metals and rapid kinetics.
摘要:
The present invention relates to a process for producing weakly acidic cation exchangers of the polymethacrylic acid type by alkaline saponification of a crosslinked copolymer of alkyl methacrylate and methacrylic acid.
摘要:
The present application relates to novel chelate resins which contain, as a functional group, quaternary nitrogen atoms in structures of the general formula (I) in which at least one of the radicals R1 to R3 represents an optionally substituted radical of the series consisting of picolyl, methylquinoline or methylpiperidine, m represents an integer from 1 to 4 and M represents the polymer matrix and X represents a counterion of the series consisting of hydroxide OH−, halide, preferably Cl−, Br−, or sulphate SO42−, a process for their preparation and the use thereof, in particular the use of the novel chelate resins in hydrometallurgy and electroplating.
摘要:
The present invention relates to a process for the preparation of iron oxide/iron oxyhydroxide-containing weakly basic anion exchangers prepared according to the phthalimide process and their use for removing oxo anions and their thio analogues, preferably of arsenic, from water and aqueous solutions and to a regeneration process.
摘要:
The present invention relates to the use of amphoteric ion exchangers for adsorbing oxo anions, preferably to the use of iron oxide/iron oxyhydroxide-containing amphoteric ion exchangers for removing oxo anions from water and aqueous solutions, and to the preparation of these amphoteric iron oxide/iron oxyhydroxide-containing ion exchangers.
摘要:
The present invention relates to a process for producing weakly acidic cation exchangers of the polymethacrylic acid type by alkaline saponification of a crosslinked copolymer of alkyl methacrylate and methacrylic acid.