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    PRODUCTION OF SODIUM DIFORMATE
    41.
    发明专利
    PRODUCTION OF SODIUM DIFORMATE 未知

    公开(公告)号：CA2632846A1

    公开(公告)日：2007-07-05

    申请号：CA2632846

    申请日：2006-12-28

    Applicant: BASF AG

    Inventor： GROPP STEFAN ,  LOHMANN ANNA VALESKA ,  HAUK ALEXANDER ,  HEINZ ROBERT

    IPC: C07C51/41 ,  A23K1/16 ,  A23K1/175 ,  A23K1/18 ,  C07C51/44 ,  C07C53/06

    Abstract: Preparation of a solid sodium formate preparation comprises (i) preparing an aqueous solution, which exhibits formic acid, sodium formate and water; (ii) subjecting the aqueous solution to crystallization and separating a solid phase from mother liquor; (iii) supplying the mother liquor during the production of the aqueous solution, to a distilling device; (iv) mixing the mother liquor with a sodium-containing base to form a mixture containing sodium formate and formic acid; (v) mixing the mixture with formic acid; and (vi) removing the water by withdrawing from the distilling device. Preparation of a solid sodium formate preparation with a content of at least 35 wt.% of formic acid, comprises: (i) at increased temperature, preparing an aqueous solution, which exhibits a molar ratio of formic acid and sodium formate of more than 1.5:1 and a molar ratio of formic acid and water of at least 1.1:1; (ii) subjecting the aqueous solution to crystallization and separating a solid phase from mother liquor; (iii) supplying the mother liquor, optionally after removal of a partial quantity of the mother liquor, during the production of the aqueous solution, to a distilling device; (iv) mixing the mother liquor with a sodium-containing base to form a mixture containing sodium formate and formic acid; (v) mixing the mixture with formic acid under receipt of the aqueous solution; and (vi) removing the water that is not needed for the production of the aqueous solution, by withdrawing from the distilling device.

    43.
    发明专利
    未知

    公开(公告)号：BRPI0416179A

    公开(公告)日：2007-01-09

    申请号：BRPI0416179

    申请日：2004-11-05

    Applicant: BASF AG

    Inventor： HAUK ALEXANDRE ,  KARL J RN ,  PASCHOLD JUERGEN ,  GROPP STEFAN ,  LOHMANN ANNA VALESKA ,  LENZ ROBERT ,  LETZELTER THOMAS ,  HEINZ ROBERT

    IPC: C07C51/09 ,  C07C51/41 ,  C07C53/02 ,  C07C53/06

    Abstract: A process is proposed for preparing acid formates in which a liquid stream I comprising formic acid and a liquid stream II comprising a metal formate are prepared, the liquid streams I and II are fed to a rectification column in such a manner that a higher or identical feed point to the rectification column is chosen for the liquid stream II than for the liquid stream I, the liquid streams I and II are mixed in the rectification column, with water being removed overhead from the rectification column and a bottoms stream comprising the acid formate is taken off from the rectification column, which comprises the bottoms stream being produced as melt comprising less than 0.5% by weight of water.

    47.
    发明专利
    未知

    公开(公告)号：DE3447422A1

    公开(公告)日：1986-06-26

    申请号：DE3447422

    申请日：1984-12-24

    Applicant: BASF AG

    Inventor： BUEHLER VOLKER DR ,  HOFMANN FRIEDBERT DR ,  HEINZ ROBERT

    IPC: A61K9/14 ,  A61K9/16 ,  A61K31/375 ,  B01J2/22 ,  B01J2/00 ,  C07D307/62

    Abstract: Ascorbic acid granules for direct tableting are prepared by the compacting method, wherein the ascorbic acid in the form of crystals or crystal fragments, of which not more than 40% by weight have a longest particle diameter of less than 50 mu m and not more than 15% by weight have a longest particle diameter greater than 500 mu m, and as a mixture with from 0.8 to 8% by weight of soluble polyvinylpyrrolidone having a water content of from 0.3 to 5% is compacted in a conventional manner, and the product is comminuted.

    48.
    发明专利
    未知

    公开(公告)号：DK602085A

    公开(公告)日：1986-06-25

    申请号：DK602085

    申请日：1985-12-23

    Applicant: BASF AG

    Inventor： BUEHLER VOLKER ,  HOFMANN FRIEDBERT ,  HEINZ ROBERT

    IPC: A61K9/14 ,  A61K9/16 ,  A61K31/375 ,  B01J2/22 ,  A61K

    Abstract: Ascorbic acid granules for direct tableting are prepared by the compacting method, wherein the ascorbic acid in the form of crystals or crystal fragments, of which not more than 40% by weight have a longest particle diameter of less than 50 mu m and not more than 15% by weight have a longest particle diameter greater than 500 mu m, and as a mixture with from 0.8 to 8% by weight of soluble polyvinylpyrrolidone having a water content of from 0.3 to 5% is compacted in a conventional manner, and the product is comminuted.

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