公开(公告)号：DE19954069A1

公开(公告)日：2000-05-11

申请号：DE19954069

申请日：1999-11-10

Applicant: BASF AG

Inventor： OETTER GUENTER ,  EHLE MICHAEL ,  SWAID ISSAM ,  BARCZEWSKI BALDUR

IPC: B09C1/02 ,  C11D1/12 ,  C11D1/22 ,  C11D1/52 ,  C11D1/66 ,  C11D1/72 ,  C11D1/722 ,  C11D1/83 ,  B09C1/08 ,  A62D3/00

Abstract: An aqueous surfactant mixture comprises at least one anionic surfactant and at least one nonionic surfactant for solubilizing harmful organic substances in a solid matrix such as contaminated soil. An aqueous surfactant formulations comprises (a) at least one anionic surfactant selected from alkylaryl sulfonates of formula (I); R = 6-24 C linear or branched alkyl R = Na, K, Ca or NR 3 R (same or different) = H or 1-8 C alkyl m = 1, 2 or 3 and sulfosuccinates of formula (II); R = as above R and R independently = H or linear or branched 2-22 C alkyl with the proviso that R and R are not both H simultaneously; and (b) at least one nonionic surfactant selected from alkoxylated alcohols of formula (III); R = 6-32 C linear or branched alkyl or alkenyl residue R (same or different) = linear or branched 1-6 C alkyl n = 1-80 R = H, linear or branched 1-6 C alkyl or -CO-R R = linear or branched 1-6 C alkyl; carboxylic acid amidoalkoxylates of formula (IV); R = linear or branched 5-30 C alky or alkenyl residue R = H or linear or branched 1-6 C alkyl R (same or different) = linear or branched 1-6 C alkyl n = 1-50 R = H or linear or branched 1-6 C alkyl. Alkylglycosides in which at least one linear or branched 4-30 C alcohol is linked to a mono-, di-, oligo- or polysaccharide by way of an ether link; and Polyalkyleneoxide block copolymers with at least one terminal polyethyleneoxide block and at least one block of propylene oxide and/or butylene oxide and having an average molecular weight of 500-20000, for the ex-situ-, in-situ- and especially the hydraulic in-situ removal of organic substances in a solid matrix.