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    STABILIZED HYDROXYLAMINE SOLUTIONS
    12.
    发明专利
    STABILIZED HYDROXYLAMINE SOLUTIONS 未知

    公开(公告)号：CA2239805C

    公开(公告)日：2006-12-19

    申请号：CA2239805

    申请日：1996-12-20

    Applicant: BASF AG

    Inventor： LEUTNER BERND ,  SCHNEIDER HANS-MICHAEL

    IPC: C01B21/14 ,  C07C20060101 ,  C07C215/00 ,  C07D521/00

    Abstract: The present invention relates to stabilised hydroxylamine solutions containi ng as stabilizer at least one compound of general formula (I) R1R2N -A-NR3R4 or salts thereof. In said formula (I): A stands for alkylene, alkenylene, alkinylene, cycloalkylene, cycloalkenylene, arylene, o-, m- or p-xylylene, or a five- or six-member saturated or unsaturated heterocycle with a nitrogen atom, the groups in question can hav e 1, 2 or 3 substituents selected independently of one another from among alkyl, alkoxy or hydroxyl, or stands for the group -X-[-NR-B-]-n- wherein B and X stand for -CH2CH2- or - CH2CH2CH2-, n stands for a number between 10 and 50,000, R stands for H, alkyl, an ethylene or propylene group substituted with OH, NH2, NHCOR5 or COOH, CSSH, CH2CN or CH2PO3H2 or represents a bridge with a nitrogen atom of another polyethyleneimine or polypropyleneimine chain, said bridge being formed by - [- NR-B-]-o- or CH2 CHOH CH2-[-O CH2CH2-]-p-CH2 CHOH CH2-, o and p independently of one another standing for 1-15, R5 stands for H, C1-C18 alkyl or CHR6COR6, R6 standing for a C12-C18 alkyl group, R1, R2, R3, R4 independently of one another stand for H, CH2COO H, CH2PO3H2, alkyl, acyl, CH2CH2OH, CH2CH2NH2 or (a) in which R7 stands for OH, SH, NH2, CN, COOH, alkyl or alkoxy. Excepted from the disclosure are ethylenediamino-tetraacetic acid and N-hydroxyethylenediamino-triacetic acid and the salts thereof.

    14.
    发明专利
    未知

    公开(公告)号：DE59805858D1

    公开(公告)日：2002-11-14

    申请号：DE59805858

    申请日：1998-02-18

    Applicant: BASF AG

    Inventor： LEUTNER BERND ,  FRIEDRICH GABRIELE ,  SCHLEGEL REINHOLD

    IPC: B22F9/16 ,  B22F1/00 ,  B22F9/28 ,  B22F9/30 ,  C22C33/02 ,  C22C38/00

    Abstract: A process for producing finely divided phosphorus-containing iron involves gaseous phase reaction of iron pentacarbonyl with a phosphorus compound, preferably phosphine. Preferably, the reaction is carried out in the presence of ammonia at above 200 degrees C. Also claimed is a finely divided phosphorus-containing iron which consists of spherical particles with 1-10 mu mean particle diameter or of filament aggregates of spheres with 0.2-3 mu diameter. Preferably, the iron contains 0.1-50 wt.% P, less than 1 wt.% C, less than 1 wt.% N, less than 0.5 wt.% H and less than 0.1 wt.% total of other impurity elements and is produced by the above process. Further claimed is apparatus for carrying out the above process, including a heated decomposition tube, devices for producing two different temperature zones, for evaporating liquid iron pentacarbonyl and for gas dosing and mixing, and a separator for finely divided phosphorus-containing iron.

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