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    2.
    发明专利
    未知

    公开(公告)号：DE2505704A1

    公开(公告)日：1976-08-26

    申请号：DE2505704

    申请日：1975-02-12

    Applicant: DEGUSSA

    Inventor： HASCHKE HEINZ DR ,  SCHREYER GERD DR ,  SCHWARZE WERNER DR ,  SUCHSLAND HELMUT DR

    IPC: C07D251/50 ,  C07D251/44 ,  C07D251/40

    Abstract: There is provided a process, preferably continuous and in a given case successive, substitution of one or two chlorine atoms of cyanuric chloride by one or two amines, which may be the same or different, in the presence of an acid acceptor and in the presence of an organic solvent, particularly for the production of 2-alkylamino-4,6-dichloro and preferably for the production of 2,4-di(alkylamino)-6-chloro-s-triazines wherein there is added 1.00 to 1.05 mole, preferably 1.00 to 1.03 mole of a first amine to a 4.5 to 50 weight % suspension or solution of cyanuric chloride in a mixture of 65 to 85 weight % of xylene, toluene, ethylbenzene, benzene and/or an aliphatic or cycloaliphatic hydrocarbon with 5 to 10 carbon atoms (toluene being preferred) and 35 to 15 weight % of a ketone with 3 to 8 carbon atoms, preferably acetone, while maintaining the temperature between about 0 and about 20 DEG C, preferably about 10 to 18 DEG C., continuously so regulating the pH value of the reaction mixture obtained in accordance with the reaction time by addition of alkali and in a given case, water so that this corresponds to a point within the area bounded by lines ABCD of FIG. 1, which runs through the area beginning with the reaction time t,(step 1)= 0 until reaching a position in the area bounded by the lines BCEF and after reaching a pH of 7.0, preferably 7.2 maintains a temperature of about 10 DEG to about 60 DEG C., preferably about 25 DEG to 40 DEG C., after addition of 0.96 to 1.05, preferably 0.98 to 1.02 equivalents of alkali per mole of cyanuric chloride, adding at least an equimolar amount, preferably 1.00 to 1.02 mole of the second amine per mole of cyanuric chloride and continuously so adjusting the pH value of the reaction mixture obtained depending on the reaction time by addition of alkali that this corresponds to a point within the area which is defined by lines GHIJ in FIG. 3 which passes through the band beginning with the reaction time t(step 2)= 0 of the second reaction step until reaching a position in the area bounded by the lines HIKL and thereby maintaining a temperature of 40 to 70 DEG C., preferably 45 DEG to 55 DEG C. and thereafter working up the product in known manner wherein t1 is a time of 4 to 10 hours, preferably about 7 hours and t2 is a time of 2 to 8 hours, preferably about 6 hours and wherein the B C corresponds to the equation, pH = -(12.6/t1)+ 14.35 and the line H I corresponds to the equation pH = -(24,857/t2)+ 23.9285. There are also disclosed novel, purified mono and bis alkylamino-cyanoalkylalkylamino - s - triazines.

    AN APPARATUS FOR PRODUCING SOLUTIONS OR SUSPENSIONS OF CYANURIC CHLORIDE IN AQUEOUS ORGANIC SOLVENTS
    3.
    发明专利
    AN APPARATUS FOR PRODUCING SOLUTIONS OR SUSPENSIONS OF CYANURIC CHLORIDE IN AQUEOUS ORGANIC SOLVENTS 未知

    公开(公告)号：ZA757296B

    公开(公告)日：1976-11-24

    申请号：ZA757296

    申请日：1975-11-20

    Applicant: DEGUSSA

    Inventor： BITTNER FRIEDRICH DR ,  FRIEDRICH BITTNER DR ,  HASCHKE HEINZ DR ,  HEINZ HASCHKE DR ,  SUCHSLAND HELMUT DR ,  HELMUT SUCHSLAND DR ,  SCHREYER GERD DR ,  GERD SCHREYER DR ,  SCHWARZE WERNER DR ,  WERNER SCHWARZE DR

    IPC: C07D251/28 ,  C07D

    Abstract: There is provided a process for the production of a solution or suspension of cyanuric chloride in a water containing organic solvent wherein the liquid cyanuric chloride and the organic-aqueous solvent are mixed together while being agitated, the liquid cyanuric chloride at a temperature between its melting point and 200 DEG C. is led into the flowing organic-aqueous solvent with a velocity of Vcy (in kg per hour) wherein where P is the desired concentration of cyanuric chloride in the solution or suspension to be produced in weight %, PLM is the concentration of cyanuric chloride in the solvent used which also includes O, VLM is the velocity of the solvent added in kg/h, AND PLM, VLM and TLM, the temperature of the added solvent, are so selected that the expression does not exceed the boiling temperature in DEG C. of the solvent used and wherein Cp(LM) and Cp(Cy) signify the specific heat capacities in cal. x g 1 x ( DEG degree C) 1 of the solvent and cyanuric chloride respectively, whereupon in a given case within at most 3 minutes after bringing the cyanuric chloride and solvent into contact the flowing mixture is cooled to the desired storage temperature.

    A process for the preparation of ammonium 2-hydroxy-4-methylthio-n-butyrate
    5.
    发明专利
    A process for the preparation of ammonium 2-hydroxy-4-methylthio-n-butyrate 未知

    公开(公告)号：IN187983B

    公开(公告)日：2002-08-03

    申请号：IN781CA1995

    申请日：1995-07-10

    Applicant: DEGUSSA

    Inventor： SUCHSLAND HELMUT DR ,  KOHL HEINZ

    IPC: A23K1/16 ,  C07C319/20 ,  C07C319/28 ,  C07C323/52 ,  C07C323/60 ,  G07C67/00

    Abstract: PCT No. PCT/EP95/02515 Sec. 371 Date Jan. 13, 1997 Sec. 102(e) Date Jan. 13, 1997 PCT Filed Jun. 28, 1995 PCT Pub. No. WO96/01809 PCT Pub. Date Jan. 25, 1996It is known to isolate MHA from a reaction mixture obtained by the addition of hydrocyanic acid (HCN) to methyl mercaptopropionic aldehyde (MMP) and the hydrolysis of the methyl mercapto propionic aldehyde cyanohydrine (MMP-CH) obtained thereby with sulphuric acid, in which the reaction mixture is brought into contact with a substantially non-water-miscible organic solvent, in order to form an extraction solution having the solvent and MHA transferred from the reaction mixture, and the MHA is obtained as an extract from this extraction solution by concentration. The simplest and most economical process of the invention concerning the processing of the reaction product which facilitates the production of a highly concentrated product with an extremely low dimer, oligomer and by-product content, is characterised in that the concentration is conducted in such a way that the remaining extract contains less than 4 wt % and preferably less than 2 wt % of water. Animal feed supplement, mixtures for supplementing animal feed, e.g. with methionine or ammonium-MHA.

    7.
    发明专利
    未知

    公开(公告)号：DE2505703A1

    公开(公告)日：1976-08-26

    申请号：DE2505703

    申请日：1975-02-12

    Applicant: DEGUSSA

    Inventor： HASCHKE HEINZ DR ,  SCHREYER GERD DR ,  SCHWARZE WERNER DR ,  SUCHSLAND HELMUT DR

    IPC: C07D251/42 ,  C07D251/44 ,  C07D251/50 ,  C07D251/40

    Abstract: There is provided a process for the substitution of one or for the successive substitution of two chlorine atoms of cyanuric chloride by one or two amines whch may be the same or different in the presence of an acid binding agent and in the presence of an organic solvent, particularly for the production of 2-alkylamino-4,6-dichloro-, s-triazines and more preferably for the production of 2,4-di-(alkylamino)-6-chloro-s-triazines wherein there is used a 4 to 60 weight % solution or suspension of cyanuric chloride in a mixture of 65 to 85 weight % of one or more aliphatic hydrocarbons or cycloaliphatic hydrocarbons hving 5 to 10 carbon atoms and/or one or more aromatic hydrocarbons and 35 to 15 weight % of one or more ketones having 3 to 8 carbon atoms.

    Verfahren zur Herstellung von Triallylcyanurat
    8.
    发明专利
    Verfahren zur Herstellung von Triallylcyanurat 未知

    公开(公告)号：DE102006034257B4

    公开(公告)日：2014-11-27

    申请号：DE102006034257

    申请日：2006-07-21

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： HÄFNER VOLKER ,  SUCHSLAND HELMUT DR ,  WERLE PETER DR

    IPC: C07D251/34

    Abstract: Verfahren zur Herstellung von Triallylcyanurat (TAC) mit einer APHA-Zahl von gleich oder kleiner 10 durch Umsetzung von Cyanurchlorid mit Allylalkohol in Gegenwart eines Alkalimetall-Säureakzeptors und in Abwesenheit eines anderen organischen Lösungsmittels als Allylalkohol, Abtrennung des gebildeten Salzes durch Zugabe von Wasser und nachfolgende Phasentrennung, Auswaschen der organischen Phase mit Wasser und destillative Abtrennung von Wasser und Allylalkohol aus der TAC enthaltenden organischen Phase, dadurch gekennzeichnet, dass man pro Mol Cyanurchlorid 3,9 bis 5,0 Mol Allylalkohol und 3,0 bis 3,2 Äquivalente Säureakzeptor einsetzt, Cyanurchlorid und Säureakzeptor gleichzeitig oder hintereinander zu wasserfreiem oder mindestens 50 Gew.-%igem wasserhaltigen Allylalkohol gibt und die Umsetzung ein- oder mehrstufig bei einer Temperatur im Bereich von –50 C bis +50°C durchführt.

    9.
    发明专利
    未知

    公开(公告)号：DE4428608C1

    公开(公告)日：1996-02-29

    申请号：DE4428608

    申请日：1994-08-12

    Applicant: DEGUSSA

    Inventor： SUCHSLAND HELMUT DR ,  HAEFNER VOLKER

    IPC: A23K1/16 ,  C07C319/20 ,  C07C319/28 ,  C07C323/52 ,  C07C323/60 ,  C07C323/25

    Abstract: Known processes for producing 2-hydroxy-4-methylthiobutyric acid (MHA) use a liquid-liquid extraction or a combined liquid/liquid and solid/liquid phase separation to isolate MHA from a reaction mixture produced by hydrolysing MMP-cyanhydrine. These processes are either costly or produce waste that is difficult to dispose of. These disadvantages are eliminated by isolating MHA by solid/liquid separation. The reaction mixture is evaporated until a MHA-containing salt residue with little or no residual water is obtained, the MHA-containing salt residue is treated with an organic solvent to produce a suspension, solid components are separated from the thus obtained suspension until a MHA-containing solution is obtained, the organic solvent is removed from the MHA-containing solution until a MHA residue is obtained and if required the MHA residue is then conditioned by water admixture. Besides high quality MHA, this process produces marketable crystalline ammonium sulphate and/or hydrogenated ammonium sulphate. This process is useful for producing feedstuff supplements.

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