公开(公告)号：US4774004A

公开(公告)日：1988-09-27

申请号：US879713

申请日：1986-06-27

申请人： Werner Gruenewaelder ,  Margarete Schaefer ,  Winfried Wichelhaus ,  Wolfgang von Rybinski

发明人： Werner Gruenewaelder ,  Margarete Schaefer ,  Winfried Wichelhaus ,  Wolfgang von Rybinski

IPC分类号： B01J20/20 ,  B01D37/02 ,  D06L1/10

CPC分类号： D06L1/10

摘要： This invention relates to a process for the filtration of liquors containing organic solvents in dry cleaning using natural and/or synthetic layered silicates prepared with one or more ammonium compounds corresponding to the following general formulaR.sup.1 R.sup.2 R.sup.3 R.sup.4 N.sup.+ X.sup.- (I)wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 represent hydrogen, alkyl or alkenyl groups which may optionally be substituted and X.sup.- represents anions of water-soluble, highly dissociated acids, in a quantity of from 2 to 60% by weight.Settling filters or cartridge filters are charged with the layered silicates thus prepared either alone or in combination with kieselguhr and/or active carbon, and solvent mixtures used in dry cleaning are filtered through the prepared filters.The invention also relates to filtration aids for use in the filtration of cleaning liquors from dry cleaning systems which are characterized in that they comprise natural and/or synthetic layered silicates prepared with quaternary ammonium compounds corresponding to general formula (I) above in a quantity of from 2 to 60% by weight, in combination with kieselguhr and/or active carbon.

摘要翻译： 本发明涉及使用天然的和/或合成的层状硅酸盐过滤含有有机溶剂的液体的方法，所述层状硅酸盐由一种或多种对应于以下通式的其它铵化合物制备：R1R2R3R4N + X-（Ⅰ）其中R1，R2， R 3和R 4表示氢，可任选被取代的烷基或烯基，X代表水溶性，高离解酸的阴离子，其量为2-60重量％。 沉淀过滤器或筒式过滤器装有单独或与硅藻土和/或活性炭组合制备的层状硅酸盐，并且通过制备的过滤器过滤干洗中使用的溶剂混合物。 本发明还涉及用于从干洗系统过滤清洁液的过滤助剂，其特征在于它们包含用对应于上述通式（I）的季铵化合物制备的天然和/或合成的层状硅酸盐，其量为 2至60重量％，与硅藻土和/或活性炭组合。