33.
    发明专利
    未知

    公开(公告)号:DK163172B

    公开(公告)日:1992-02-03

    申请号:DK602085

    申请日:1985-12-23

    Applicant: BASF AG

    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.

    PROCESS FOR THE PREPARATION OF AN ASCORBIC-ACID GRANULATE

    公开(公告)号:DE3572590D1

    公开(公告)日:1989-10-05

    申请号:DE3572590

    申请日:1985-12-16

    Applicant: BASF AG

    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.

    40.
    发明专利
    未知

    公开(公告)号:DK1682476T3

    公开(公告)日:2007-08-20

    申请号:DK04797653

    申请日:2004-11-05

    Applicant: BASF AG

    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.

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