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    11.
    发明专利
    未知

    公开(公告)号：SE7803632L

    公开(公告)日：1978-10-01

    申请号：SE7803632

    申请日：1978-03-30

    Applicant: HOECHST AG

    Inventor： SCHUIERER E ,  BATHELT H ,  BROLL R

    IPC: A62C3/06 ,  A62D1/02 ,  C07F9/141 ,  A62D1/00

    Abstract: New aqueous concentrates containing a fluorinated surfactant and a further foam producing component are disclosed. They contain of from 0.5 to 2.5% by weight a fluorinated phosphorous acid ester having the formula (I) In this formula means Rf a perfluoroalkyl radical with from 3 to 16 carbon atoms, m zero or 1, p an integer of from 1 to 4, R1 a hydrogen atom, a C1-4 alkyl radical, a cylcohexyl radical or a 2-hydroxyalkyl radical with from 2 to 6 carbon atoms, R2 a C1-4 alkyl radical, a cyclohexyl radical or a 2-hydroxyalkyl radical with 2 to 6 carbon atoms, or a radical of the formula Rf-(CF=CH)m-(CH2)p, Q an alkylene radical with 2 to 4 carbon atoms, which may be substituted by phenyl groups. The aqueous concentrate when diluted with about 16 parts by volume of water gives a solution which can be foamed. The foam it capable of extinguishing liquid hydrocarbon fires.

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