摘要:
According to the invention, metal halides are removed from liquid organic water-immiscible substances by treating the liquid organic water-immiscible substances which contain the metal halides with a water-containing anion-exchanger in the OH form.
摘要:
A process for the selective removal of sulfur-containing gases from industrial gases or waste gases by treatment of gases with basic substances, characterized in that the basic substances are carrier materials containing tertiary amino groups corresponding to the following formula: ##STR1## in which m and n individually are 1 or 2,x and y individually are from 0 to 10 and preferably 0 to 2,R and R' individually are hydrogen or alkyl andR" is hydrogen or methyl.
摘要:
The present invention relates to a process for preparing novel, monodisperse anion exchangers by (a) reacting monomer droplets made from monovinylaromatic compounds and polyvinylaromatic compounds, and optional porogens and/or initiators, (b) amidomethylating the resultant monodisperse, crosslinked bead polymers with phthalimide derivatives, (c) converting the amidomethylated bead polymers to aminomethylated bead polymers, and (d) alkylating the aminomethylated bead polymers.
摘要:
The present invention relates to a process for preparing gel-like anion exchangers by aminating crosslinked gel-like styrene divinybenzene bead polymers that contain halogenoalkyl groups in the presence of an inorganic salt and in the absence of organic solvents.
摘要:
The present invention relates to a process for preparing novel, monodisperse anion exchangers having strongly basic functional groups either in the center of the resin particle or in the shell of the resin particle, as well as to their use.
摘要:
Weakly basic anion exchangers of the poly(meth)acrylamide type which have been prepared by aminolysis of poly(meth)acrylonitrile or poly(meth)acrylate with polyamines of defined composition have an improved absorption capacity for sulphate ions and are suitable for selectively removing sulphate ions from aqueous liquids, in particular from sodium chloride brine and from waste waters.
摘要:
The present invention relates to a process for the preparation of storage-stable iminodisuccinate solutions, by subjecting an aqueous solution of iminodisuccinate having an ammonia content of less than 20 ppm to thermal treatment at 40 to 120° C. for 5 hours up to 300 days and subsequent distillation at
摘要:
Thiamine monophosphate is separated from a solution of thiamine phosphates containing thiamine monophosphate and cocarboxylase and having a pH of 2-7 by using a cation exchanger resin having a pK.sub.a of 1.0-4.5.
摘要:
The invention relates to a process for the preparation of iminodisuccinic acid ammonium metal salts, characterized in that, in a first stage, maleic anhydride (MA), alkali metal hydroxide and water are mixed in the molar ratio of 2:0-3:5-30 and then ammonia is metered in in the ratio MA:ammonia 2:1.5-8, in order to obtain iminodisuccinic acid ammonium salts which, in a second stage, are reacted with metal oxides, metal hydroxides (and) or other metal salts or their mixtures to give iminodisuccinic acid ammonium metal salts of the formula 8, IDA(NH4)x(Na)y(K)z(Me)m.(NH3)n Formula 8 in which IDA represents iminodisuccinic acid anion, x=0.1-3.9 y=0-3 z=0-3 m=0.1-2 n=0-6 and Me represents metals of the IInd, IIIrd and IVth main groups and of the Ist to VIIIth subgroups as well as metals of the lanthanide series, of the Periodic Table, which can occur in the oxidation states 1, 2, 3 or 4, the compounds themselves and their intermediates, and the use.
摘要翻译:本发明涉及一种制备亚氨基二琥珀酸铵金属盐的方法,其特征在于,在第一阶段中,马来酸酐(MA),碱金属氢氧化物和水以2:0-3:5的摩尔比混合 -30,然后以MA:氨2:1.5-8的比例计量氨,以获得亚氨基二琥珀酸铵盐,其在第二阶段与金属氧化物反应,金属氢氧化物(和)或其它金属盐 或其混合物,得到式8的亚氨基二琥珀酸铵金属盐,<?in-line-formula description =“In-line Formulas”end =“lead”?> IDA(NH 4) (Na)y(K)z(Me)m(NH 3) 式8其中IDA表示亚氨基二琥珀酸阴离子,x = 0.1-3.9 y = 0,其中,式8是线内式描述=“In-line Formula”end =“tail” -3 z = 0-3 m = 0.1-2 n = 0-6,Me表示IInd,IIIrd和IVth主要和Ist至VIII族亚组的金属以及t 他的镧系元素周期表,其可以发生在氧化态1,2,3或4中,化合物本身及其中间体,以及其用途。