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公开(公告)号：BR9711014A
公开(公告)日：1999-08-17
申请号：BR9711014
申请日：1997-08-04
Applicant: BASF AG
Inventor： HEIDA BERND , THIESSEN FRITZ , HAMMON ULRICH
Abstract: Mixing device for the blending of at least two liquid phases, containing a housing (1) with an inside diameter D, in which at least one agitator (2) is equipped with two to five segment shaped blades presenting a radius of curvature K, in which the circular area inside the housing (1), covered by the rotating agitators, has a diameter E, and in which K ranges from 0.10*D to 0.30*D, preferably from 0.125*D to 0.25*D, and E ranges from 0.35*D to 0.65*D, preferably from 0.45*D to 0.55*D.
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公开(公告)号：DE3445288A1
公开(公告)日：1986-06-19
申请号：DE3445288
申请日：1984-12-12
Applicant: BASF AG
Inventor： BIEG WALTER , HEIDA BERND
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公开(公告)号：FR2540105B1
公开(公告)日：1986-02-14
申请号：FR8400782
申请日：1984-01-19
Applicant: BASF AG
Inventor： WICKENHAEUSER GERHARD , HEIDA BERND , GRAF FRITZ , HUPFER LEOPOLD
IPC: C07C47/127 , C07C45/00 , C07C45/80 , C07C45/85 , C07C67/00
Abstract: Aqueous solutions of glyoxal which contain acids are purified by treatment with a solution which contains from 20 to 60% by weight of a tertiary amine and from 80 to 40% by weight of an alcohol which is not infinitely miscible with water, the treatment being carried out by mixing the two solutions during a residence time of less than 5 minutes.
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公开(公告)号：DE3334863A1
公开(公告)日：1985-04-11
申请号：DE3334863
申请日：1983-09-27
Applicant: BASF AG
Inventor： WICKENHAEUSER GERHARD DR , HEIDA BERND , GRAF FRITZ DR , HUPFER LEOPOLD DR
IPC: C07C59/153 , C07C51/00 , C07C51/48 , C07C67/00
Abstract: Process for obtaining aqueous glyoxylic acid solutions which are essentially free from other acids, from aqueous solutions which furthermore contain other acids, by mixing the aqueous solution with an organic nitrogen compound at temperatures of up to 50 DEG C, separating the phases and extracting the glyoxylic acid from the organic phase at a higher temperature using water.
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