Aqueous surfactant mixture useful for solubilizing harmful organic substances in a solid matrix such as contaminated soils, comprises a selected anionic surfactant and a selected nonionic surfactant

    公开(公告)号:DE19954070A1

    公开(公告)日:2000-05-11

    申请号:DE19954070

    申请日:1999-11-10

    Applicant: BASF AG

    Abstract: Aqueous surfactant mixtures comprising at least one selected anionic surfactant and at least one selected nonionic surfactant useful for solubilizing harmful organic substances in a solid matrix such as contaminated soil. Aqueous surfactant formulations comprising (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 alkyl 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 polyalkylene oxide block copolymers with at least one terminal polyethylene oxide block and at least one block of propylene oxide and/or butylene oxide and having an average molecular weight of 500-20000.

    50.
    发明专利
    未知

    公开(公告)号:DE59701320D1

    公开(公告)日:2000-04-27

    申请号:DE59701320

    申请日:1997-05-21

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP97/02590 Sec. 371 Date Nov. 19, 1998 Sec. 102(e) Date Nov. 19, 1998 PCT Filed May 21, 1997 PCT Pub. No. WO97/44426 PCT Pub. Date Nov. 27, 1997The use of at least trihydric alcohols and their reaction products with ethylene oxide and/or propylene oxide as additive to particulate detergent formulations, especially compact detergents, to increase their rate of dissolving in water in amounts of from 0.1 to 5% by weight based on the detergent formulations.

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