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    Production of dialkylphosphines
    1.
    发明授权
    Production of dialkylphosphines 失效
    二氯磷酸盐的生产

    公开(公告)号：US3855311A

    公开(公告)日：1974-12-17

    申请号：US41385073

    申请日：1973-11-08

    Applicant: HOECHST AG

    Inventor： STAENDEKE H

    IPC: C07F9/50

    CPC classification number: C07F9/5004

    Abstract: Production of dialkylphosphines. In a first step, a mixture of phosphorus and an alkyl halide is passed at 300 - 450*C over active carbon and the resulting gaseous reaction mixture is initially freed from trialkylphosphonium halide and unreacted phosphorus, and then freed from a homogeneous mixture comprised of a dialkylhalaogenophosphine/hydrogen halide-addition product and dialkylphosphonium halide. In a second step, the mixture is solvolyzed with an alcohol, a pH of at least 2 is established in the solvolyzed material, and dialkylphosphine is separated from the solution obtained.

    Abstract translation: 生产二烷基膦。 在第一步中，磷和烷基卤化物的混合物在300-450℃下通过活性炭，所得气态反应混合物最初从三烷基卤化鏻和未反应的磷中除去，然后从均匀混合物中脱除 二烷基镓基膦/卤化氢加成产物和二烷基卤化鏻。 在第二步中，将混合物用醇溶剂化，在溶剂分解的材料中建立至少为2的pH，并将二烷基膦与所得溶液分离。

    2.
    发明专利
    未知

    公开(公告)号：SE416540B

    公开(公告)日：1981-01-19

    申请号：SE7708205

    申请日：1977-07-14

    Applicant: HOECHST AG

    Inventor： STAENDEKE H ,  OANY F-J ,  KANDLER J ,  AUEL T ,  KLOSE W

    IPC: C01B25/023 ,  C01B25/00

    Abstract: 1519929 Red phosphorus HOECHST AG 27 May 1977 [17 July 1976] 22500/77 Heading C1A Stabilized pulverulent red phosphorus comprises a homogeneous blend of red phosphorus particles with a size of at most about 2mm and as an oxidation stabilizer a metal compound of the second or third group of the Periodic System, the metal compound being the aluminium, magnesium, calcium or zinc salt of an alkyl-, cycloalkyl-, aryl- or aralkyl-phosphonic acid having 1 to 20 carbon atoms, the metal compound being present in the homogeneous blend in a proportion of 0À5 to 5 weight per cent. Red phosphorus particles may-be intimately blended with 0À5 to 5 weight per cent, based on red phosphorus, of an alkyl-, cycloalkyl-, aryl- or aralkyl-phosphonic acid having 1 to 20 carbon atoms; the blend suspended in water and the suspension heated to 60 to 95‹ C.; the suspension gradually admixed with at least stoichiometric proportions of an aqueous solution of a water-soluble aluminium, magnesium, calcium or zinc salt to cause precipitation of the respective phosphoric acid salt from the aqueous suspension at a pH of 3À0 to 6À0 and preferably at a temperature of from 80 to 90‹ C.; the resulting mixture filtered, and the filter residue dried at elevated temperature, suitably at 80 to 130‹ C., and if desired, under reduced pressure. Preferred water-soluble salts are Al 2 (SO 4 ) 3 .18H 2 O, Ca(NO 3 ) 2 .4H 2 O, ZnSO 4 .7H 2 O and MgSO 4 .7H 2 O, which may be used in the form of 5 to 20 weight per cent aqueous solutions. The aluminium salt is suitably precipitated at pH 3À0 to 3À5 and the salts of the other metals at pH 5À0 to 6À0.

    6.
    发明专利
    未知

    公开(公告)号：SE7708205L

    公开(公告)日：1978-01-18

    申请号：SE7708205

    申请日：1977-07-14

    Applicant: HOECHST AG

    Inventor： STAENDEKE H ,  DANY F-J ,  KANDLER J ,  AUEL T ,  KLOSE W

    IPC: C01B25/023 ,  C01B25/00 ,  C01B25/043

    Abstract: 1519929 Red phosphorus HOECHST AG 27 May 1977 [17 July 1976] 22500/77 Heading C1A Stabilized pulverulent red phosphorus comprises a homogeneous blend of red phosphorus particles with a size of at most about 2mm and as an oxidation stabilizer a metal compound of the second or third group of the Periodic System, the metal compound being the aluminium, magnesium, calcium or zinc salt of an alkyl-, cycloalkyl-, aryl- or aralkyl-phosphonic acid having 1 to 20 carbon atoms, the metal compound being present in the homogeneous blend in a proportion of 0À5 to 5 weight per cent. Red phosphorus particles may-be intimately blended with 0À5 to 5 weight per cent, based on red phosphorus, of an alkyl-, cycloalkyl-, aryl- or aralkyl-phosphonic acid having 1 to 20 carbon atoms; the blend suspended in water and the suspension heated to 60 to 95‹ C.; the suspension gradually admixed with at least stoichiometric proportions of an aqueous solution of a water-soluble aluminium, magnesium, calcium or zinc salt to cause precipitation of the respective phosphoric acid salt from the aqueous suspension at a pH of 3À0 to 6À0 and preferably at a temperature of from 80 to 90‹ C.; the resulting mixture filtered, and the filter residue dried at elevated temperature, suitably at 80 to 130‹ C., and if desired, under reduced pressure. Preferred water-soluble salts are Al 2 (SO 4 ) 3 .18H 2 O, Ca(NO 3 ) 2 .4H 2 O, ZnSO 4 .7H 2 O and MgSO 4 .7H 2 O, which may be used in the form of 5 to 20 weight per cent aqueous solutions. The aluminium salt is suitably precipitated at pH 3À0 to 3À5 and the salts of the other metals at pH 5À0 to 6À0.

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