申请人:Benckiser-Knapsack GmbH
公开号:US04216163A1
公开(公告)日:1980-08-05
Novel and highly advantageous N-sulfo alkane amino alkane phosphonic acids and their alkali metal salts are provided. Said phosphonic acids are produced by reacting an alkali metal salt of an amino phosphonic acid with a halo, preferably chloro, or hydroxy alkane sulfonic acid or their alkali metal salts in an alkaline medium, while heating. In place of the halo and especially chloro or hydroxy alkane sulfonic acid reactants, there can also be used compounds which are capable of producing hydroxy alkane sulfonates such as carbylsulfate or aldehydes or, respectively, ethylene oxide with alkali metal bisulfites or metasulfites. The reaction is preferably carried out in a molar proportion of about 1:1 to about 1:2. The novel compounds are excellent complexing or sequestering agents especially with respect to polyvalent metal ions. They are highly resistant against hydrolysis and high temperatures and are of a very high water solubility.
提供了新颖且高效的N-磺酸烷基氨基磷酸和其碱金属盐。所述磷酸是通过将氨基磷酸的碱金属盐与卤素(优选氯)或羟基烷基磺酸或它们的碱金属盐在碱性介质中反应,并加热而制备的。在卤素,特别是氯或羟基烷基磺酸的反应物的位置,也可以使用能够产生羟基烷基磺酸盐的化合物,如羧酸酯或醛类,或分别与碱金属亚硫酸氢盐或亚硫酸盐反应的乙烯氧化物。反应最好在摩尔比约为1:1至约为1:2的比例下进行。这些新颖的化合物是优秀的络合或螯合剂,特别是对于多价金属离子。它们对水解和高温具有很高的抵抗力,并且具有非常高的水溶性。