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 %.

    PROCESS FOR MAKING CHLOROPHOSPHINES AND THIOPHOSPHINIC ACID CHLORIDES, AND NOVEL 9-CHLORO-9- THIOXO-9-PHOSPHABICYCLONONANES

    公开(公告)号:CA1283664C

    公开(公告)日:1991-04-30

    申请号:CA518448

    申请日:1986-09-18

    Applicant: HOECHST AG

    Abstract: PROCESS FOR MAKING CHLOROPHOSPHINES AND THIOPHOSPHINIC ACID CHLORIDES, AND NOVEL 9-CHLORO-9-THIOXO-9-PHOSPHABI- CYCLONONANES Chlorophosphines or thiophosphinic acid chlorides of the general formulae RPCl2, R2PCl or R2P(=S)Cl are made from feed materials selected from hydrogen-functional primary or secondary phosphines or secondary phosphine sulfides, where R stands for identical or different, linear or branched, substituted or unsubstituted alkyl radicals having from 1 - 16 carbon atoms, aryl radicals, aralkyl radicals or alkylaryl radicals having from 6 - 9 carbon atoms or cycloalkyl radicals having from 5 - 10 carbon atoms. To this end, the feed materials are reacted with phosphorus pentachloride, or with chlorine gas in the presence of phosphorus trichloride at temperatures within the range -78 to +145.degree.C. It is possible for two radicals R to be linked together by one or two substituted or unsubstituted hydrocarbon chains having from 1 - 4 carbon atoms.

    STABILIZED RED PHOSPHORUS AND PROCESS FOR MAKING IT

    公开(公告)号:CA1075439A

    公开(公告)日:1980-04-15

    申请号:CA277968

    申请日:1977-05-09

    Applicant: HOECHST AG

    Abstract: STABILIZED RED PHOSPHORUS AND PROCESS FOR MAKING IT 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 aluminum, magnesium, calcium or zinc salt of an acid orthophosphoric acid ester of a long chain aliphatic alcohol, which may be ethoxylated, or phenol, the metal compound being present in the homogeneous blend in a proportion of about 0.25 to 5 weight %.

    7.
    发明专利
    未知

    公开(公告)号:DD131925A5

    公开(公告)日:1978-08-09

    申请号:DD20155177

    申请日:1977-10-17

    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 %.

    8.
    发明专利
    未知

    公开(公告)号:DD131742A5

    公开(公告)日:1978-07-19

    申请号:DD19950677

    申请日:1977-06-15

    Applicant: HOECHST AG

    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.

    9.
    发明专利
    未知

    公开(公告)号:DK166086C

    公开(公告)日:1993-08-23

    申请号:DK126281

    申请日:1981-03-20

    Applicant: HOECHST AG

    Abstract: The invention relates to a process wherein an alcohol and/or phenol is reacted with phosphorus pentasulfide in the presence of a catalyst which is selected from (a) phosphonium salts of the general formula: I (b) ammonium salts of the general formula: II (c) phosphine oxides of the general formula: III (d) phosphine sulfides of the general formula: IV (e) phosphinic acid derivatives of the general formula: V In formulae I through V, the substituents R1, R2, R3 and R4 each stand for identical or different alkyl-, aryl-, alkaryl- or aralkyl- groups having from 1 to 22 carbon atoms. A stands for an inorganic or organic acid, and X and Y, respectively, stand for both oxygen and sulfur, and M stands for a monovalent metal or oxygen.

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