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Percarboxylic acid solutions with improved stability when in contact with stainless steel and process for producing said percarboxylic acid solutions
Percarboxylic acid solutions with improved stability when in contact with stainless steel and process for producing said percarboxylic acid solutions
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机译:与不锈钢接触时具有改善的稳定性的过羧酸溶液及其生产方法
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摘要
Percarboxylic acid solutions, in particular aqueous equilibrium percarboxylic acid solutions, with improved stability when in contact with stainless steel and also a process for the production thereof. The percarboxylic acid solutions contain a percarboxylic acid having 1 to 12 C atoms and one or two peroxycarboxyl groups and are characterized by a content of polyphosphoric acid of the formula H.sub.n+ 2 P.sub.n O.sub.3n+ 1, in which n is greater than or equal to 2.3, in a quantity of 0.2 to 10 wt. %. These solutions are distinguished in comparison with known solutions by reduced corrosive action and reduced decomposition in the presence of stainless steel. The solutions are obtainable by reacting a carboxylic acid with hydrogen peroxide in the presence of polyphosphoric acid of the above-stated type and quantity as the catalyst.
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机译:与不锈钢接触时具有改善的稳定性的过羧酸溶液,特别是含水平衡过羧酸溶液,及其制备方法。过羧酸溶液包含具有1至12个C原子的过羧酸和一个或两个过氧羧基,并且其特征在于,式Hn + 2 Pn O 3n + 1的多磷酸含量高其中n大于或等于2.3,其量为0.2至10重量%。 %。与已知的解决方案相比,这些解决方案的区别在于在不锈钢存在下减少的腐蚀作用和减少的分解。该溶液可通过在上述类型和数量的多磷酸作为催化剂的存在下使羧酸与过氧化氢反应而获得。
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