51.
    发明专利
    未知

    公开(公告)号:NO802974L

    公开(公告)日:1981-04-09

    申请号:NO802974

    申请日:1980-10-07

    Applicant: HOECHST AG

    Abstract: The invention relates to a corrosion-inhibiting active pigment for use in the surface protection of iron and iron alloys. The pigment consists of a mixture of calcium hydrogen phosphate dihydrate, magnesium hydrogen phosphate trihydrate and zinc oxide. More specifically, the mixture contains 2 to 98 weight % of ZnO and 98 to 2 weight % of phosphate components. These in turn contain 3 to 97 weight % of CaHPO4x2 H2O and 97 to 3 weight % of MgHPO4x3 H2O. The active pigment is suitable for use in painting compositions or lacquers.

    STABILIZATION OF CALCIUM PHOSPHATE DIHYDRATE

    公开(公告)号:CA1090531A

    公开(公告)日:1980-12-02

    申请号:CA288991

    申请日:1977-10-19

    Applicant: HOECHST AG

    Abstract: STABILIZATION OF CALCIUM HYDROGEN PHOSPHATE DIHYDRATE. Dicalcium phosphate dihydrate is stabilized with the use of dimagnesium phosphate trihydrate, the dicalcium phosphate dihydrate being precipitated by reacting a calcium compound with an aqueous solution of orthophosphoric acid or a phosphoric acid salt. More specifically, 1 to 50 weight% based on dicalcium phosphate dihydrate, of dimagnesium phosphate trihydrate is co-precipitated with the dicalcium phosphate dihydrate, or subsequently on precipitated dicalcium phosphate dihydrate by reacting a magnesium salt with a solution of orthophosphoric acid or of a phosphoric acid salt in the presence of a basic compound.

    STABILIZED RED PHOSPHORUS AND PROCESS FOR MAKING IT

    公开(公告)号:CA1081430A

    公开(公告)日:1980-07-15

    申请号:CA288551

    申请日:1977-10-12

    Applicant: HOECHST AG

    Abstract: STABILIZED RED PHOSPHORUS AND PROCESS FOR MAKING IT Production of stabilized pulverulent red phosphorus. The phosphorus so stabilized 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 aluminum, calcium or zinc salt of a phosphinic acid of the general formula in which R1 and R2 each stand for an alkyl, cycloalkyl, aryl or aralkyl group having 1 to 20 carbon atoms, the metal compound being present in the homogeneous blend in a proportion of about 0.5 to 5 weight %.

    FLAMEPROOF POLYURETHANES
    56.
    发明专利

    公开(公告)号:CA1050698A

    公开(公告)日:1979-03-13

    申请号:CA214137

    申请日:1974-11-19

    Applicant: HOECHST AG

    Abstract: Production of flameproof polyurethanes or polyurethane foams containing an ammonium polyphosphate of the general formula: H(n-m)+2(NH4)mPnO3n+1 in which n stands for a whole number averaging a value of more than 400 up to about 1000, and the ratio of m:n is approximately 1:1, as a flameproofing agent, if desired in combination with a further flameproofing substance.

    INTUMESCENT FLAME-RETARDANT COATING COMPOSITIONS

    公开(公告)号:CA1041685A

    公开(公告)日:1978-10-31

    申请号:CA214621

    申请日:1974-11-26

    Applicant: HOECHST AG

    Abstract: Production of intumescent flame-retardant coating compositions which substantially contain a film-forming binder, an ammonium polyphosphate, one or more substances carbonizing under the action of heat, dispersing agents and fillers, if desired. The compositions contain more particularly an ammonium polyphosphate of the general formula: H(n-m)+2(NH4)mPnO3n+1 in which n stands for a whole number averaging a value of more than 400 up to about 800 and the ratio of m:n is about 1.

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