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    ALIPHATIC ALKANAL COMPOSITION AND IMPROVEMENT IN STORAGE STABILITY OF THE COMPOUND
    1.
    发明专利
    ALIPHATIC ALKANAL COMPOSITION AND IMPROVEMENT IN STORAGE STABILITY OF THE COMPOUND 失效

    公开(公告)号：JPH11152244A

    公开(公告)日：1999-06-08

    申请号：JP22886698

    申请日：1998-08-13

    Applicant: DEGUSSA

    Inventor： HASSELBACH HANS JOACHIM DR ,  HUTHMACHER KLAUS DR ,  KELM KATJA ,  WEIGEL HORST

    IPC: C07C45/86 ,  C07C47/02 ,  C07C319/26 ,  C07C323/22 ,  C07F9/09

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject composition having improved storage stability by including a specific aromatic alkanal and an organic saturated acid to form a metal complex. SOLUTION: This composition comprises an aliphatic alkanal of the formula (R and R are each H, a 1-3C alkyl or a 1-2C alkylthio; (n) is 0-4) having >300 ppm water content, 0.004-0.1 wt.% based on the alkanal of an organic saturated acid (e.g. hydroxy dicarboxylic acid, chiral or racemic tartaric acid or aminotrimethylenephosphonic acid) to form a metal complex and more preferably 20-80 wt.% based on the organic acid of an alkanolamine or a trialkanolamine. Preferably the alkanal is formulated with 0.04-0.1 wt. % of the organic saturated acid to form the metal complex optionally in the form of an aqueous or an alcohol solution. The composition continues stabilizing action to preferably 60 deg.C.

    PRODUCTION OF ALPHA-TOCOPHEROL ESTER
    5.
    发明专利
    PRODUCTION OF ALPHA-TOCOPHEROL ESTER 失效

    公开(公告)号：JPH11246549A

    公开(公告)日：1999-09-14

    申请号：JP35904798

    申请日：1998-12-17

    Applicant: DEGUSSA

    Inventor： KRILL STEFFEN DR ,  HUEBNER FRANK DR ,  HAHN RAINER DR ,  WEIGEL HORST ,  HUTHMACHER KLAUS DR

    IPC: C07B61/00 ,  C07D311/72

    Abstract: PROBLEM TO BE SOLVED: To industrially obtain an α-tocopherol ester useful as a feed additive, etc., while saving raw materials and reducing the number of processes by reacting a diacetylated substituted hydroquinone with a specific compound in the presence of a catalytic action compound. SOLUTION: This method for producing an α-tocopherol ester of formula I (R1 is a 1-20C alkyl; R3 -R5 are each H or a 1-3C alkyl) comprises reacting (A) a hydroquinone mono- or di-ester of formula II (R2 is a 1-20C alkyl) with (B) an allyl alcohol derivative of formula III [(n) is 0-5; L is a hydroxyl group, a halogen group, an acetoxy group or the like] or (C) an allyl alcohol of formula IV in the presence of (D) a zinc halide (for example, zinc dichloride) and (E) a proton-releasing acid (preferably hydrochloric acid, hydrobromic acid, sulfuric acid, trifluoromethanesulfonic acid, etc.), at a temperature of 25-100 deg.C.

    10.
    发明专利
    未知

    公开(公告)号：DE10316110A1

    公开(公告)日：2004-10-28

    申请号：DE10316110

    申请日：2003-04-09

    Applicant: DEGUSSA

    Inventor： WEIGEL HORST ,  WECKBECKER CHRISTOPH ,  HUTHMACHER KLAUS

    IPC: C07C319/20 ,  C07C323/52 ,  C07C323/60 ,  A23K1/16

    Abstract: A process for preparing 2-hydroxy-4-methylthiobutyric acid ammonium salt involves reacting 3-methylthiopropionaldehyde with hydrogen cyanide to form 2-hydroxy-4-methylthiobutyronitrile, and subsequently hydrolyzing the 2-hydroxy-4-methylthiobutyronitrile by catalytic hydrolysis to form the ammonium salt of the 2-hydroxy-4-methylthiobutyric acid in a single process step. One catalyst may be used in the hydrolysis for the whole reaction. The catalyst is preferably a solid containing a titanium compound such as, e.g., titanium nitride, titanium sulfide or titanium dioxide. The 2-hydroxy-4-methylthiobutyric acid ammonium salt produced by this process is nutritional and can be used as an additive in feedstuffs.

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