21.
    发明专利
    未知

    公开(公告)号:SE422319B

    公开(公告)日:1982-03-01

    申请号:SE7705803

    申请日:1977-05-17

    Applicant: HOECHST AG

    Abstract: 1518665 Stabilized red phosphorus HOECHST AG 2 May 1977 [19 May 1976] 18259/77 Heading C1A [Also in Division C2] Stabilized phosphorus comprises a homogeneous blend of red phosphorus particles of size at most 2 mm with the Al, Mg, Ca or Zn salt of the orthophosphoric acid mono- or di-ester of lauryl alcohol tetraethyleneglycol ether, stearyl alcohol, or phenol hexaethyleneglycol ether or a mixture thereof, the salt being present in amount 0À25-5% by weight. The composition may be prepared by heating a suspension of the P and the ester(s) in water to 60‹-95‹ and adding an aqueous solution of a water-soluble salt of Al, Mg, Ca or Zn, filtering and drying.

    22.
    发明专利
    未知

    公开(公告)号:DK520780A

    公开(公告)日:1981-06-09

    申请号:DK520780

    申请日:1980-12-05

    Applicant: HOECHST AG

    Abstract: The invention relates to a particulate agent based on free-flowing pulverulent ammonium polyphosphates of the general formula H(n-m)+2(NH4)mPnO3n+1 in which n is an integer having an average value of from approximately 20 to 800 and the ratio of m to n is approximately 1, for impeding the combustibility of combustible materials. The agent is comprised of (a) approximately 75 to 99% by weight of ammonium polyphosphate, and (b) approximately 1 to 25% by weight of a hardened water-insoluble polycondensation product of melamine and formaldehyde encasing the individual ammonium polyphosphate particles.

    23.
    发明专利
    未知

    公开(公告)号:SE416539B

    公开(公告)日:1981-01-19

    申请号:SE7708144

    申请日:1977-07-13

    Applicant: HOECHST AG

    Abstract: The invention provides stabilized pulverulent red phosphorus. It comprises a homogeneous blend of red phosphorus particles with a size of at most about 2 mm and a metal compound of the second or third group of the Periodic System as an oxidation stabilizer, wherein the metal compound is the neutral aluminum, magnesium, calcium or zinc salt of orthophosphoric acid, the metal compound being present in the homogeneous blend in a proportion of about 0.5 to 5 weight %.

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