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    3.
    发明专利
    未知

    公开(公告)号：DK1092700T3

    公开(公告)日：2004-02-16

    申请号：DK00121161

    申请日：2000-09-29

    Applicant: DEGUSSA

    Inventor： NONGYUAN SHI DR ,  HUEBNER FRANK DR ,  DRAPAL BERND ,  PETER RAINER ,  KRILL STEFFEN DR ,  HUTHMACHER KLAUS DR ,  WECKBECKER CHRISTOPH DR

    IPC: B01J31/02 ,  C07B61/00 ,  C07C45/51 ,  C07C45/62 ,  C07C45/69 ,  C07C49/04 ,  C07C49/203

    Abstract: A process for the preparation of unsaturated 4,5-alleneketones comprises reaction of a tertiary propargylalcohol with an alkenylalkylether or a ketal in the presence of an aliphatic sulfonic acid or salt. A process for the preparation of unsaturated 4,5-alleneketones (I) of formula (1) comprises reaction of a tertiary propargylalcohol of formula (2) with an alkenylalkylether of formula (3) or a ketal of formula (4) in the presence of an aliphatic sulfonic acid of formula (5) or sulfonic acid salt of formula (6). An Independent claim is included for a process for the preparation of unsaturated 3,5-dieneketones and their corresponding saturated ketones by isomerization or hydrogenation of 4,5-alleneketones (I) of formula (1). R -O-C(R )=CH-R (3), R SO3H (5), R SO3M (6) R , R = H, 1-20C alkyl, aryl or alkylaryl or R and R may combine to form a 5-6 membered ring; R , R = 1-4C alkyl; R ,R = 1-4C alkyl; R , R = halogen, 1-20C alkyl or cycloalkyl optionally substituted with halogen, R is additionally an optionally substituted aryl; and M = cation of an organic or inorganic base.

    PROCESS FOR THE PREPARATION OF METHIONINE
    4.
    发明专利
    PROCESS FOR THE PREPARATION OF METHIONINE 未知

    公开(公告)号：MY167899A

    公开(公告)日：2018-09-26

    申请号：MYPI2014002674

    申请日：2013-02-26

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： KÖRFER MARTIN ,  HASSELBACH HANS JOACHIM ,  REICHERT STEFAN ,  JAKOB HARALD ,  WECKBECKER CHRISTOPH ,  HUTHMACHER KLAUS ,  KRULL HORST ,  DRAPAL BERND ,  PETER RAINER

    IPC: C07C319/20 ,  C07C319/26 ,  C07C319/28

    Abstract: The invention relates to a process for the preparation of D,L-methionine, in which carbon dioxide is fed to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified, where, for the purposes of purification, an aqueous solution of the separated-off crude methionine is prepared and subjected to a recrystallization, characterized in that the solution from which the recrystallization takes place contains potassium ions and also a crystallization additive, where the crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants, and that the recrystallization takes place by introducing a 60 to 110°C-hot methionine solution into a 35 to 80°C- warm methionine suspension, the temperature of which is lower than that of the introduced solution, the temperature of the: methionine suspension being maintained between 35 and 80°C during the addition.

    7.
    发明专利
    未知

    公开(公告)号：DE50004140D1

    公开(公告)日：2003-11-27

    申请号：DE50004140

    申请日：2000-09-29

    Applicant: DEGUSSA

    Inventor： NONGYUAN DR ,  HUEBNER DR ,  DRAPAL BERND ,  PETER RAINER ,  KRILL DR ,  HUTHMACHER DR ,  WECKBECKER DR

    IPC: B01J31/02 ,  C07B61/00 ,  C07C45/51 ,  C07C45/62 ,  C07C45/69 ,  C07C49/04 ,  C07C49/203

    Abstract: A process for the preparation of unsaturated 4,5-alleneketones comprises reaction of a tertiary propargylalcohol with an alkenylalkylether or a ketal in the presence of an aliphatic sulfonic acid or salt. A process for the preparation of unsaturated 4,5-alleneketones (I) of formula (1) comprises reaction of a tertiary propargylalcohol of formula (2) with an alkenylalkylether of formula (3) or a ketal of formula (4) in the presence of an aliphatic sulfonic acid of formula (5) or sulfonic acid salt of formula (6). An Independent claim is included for a process for the preparation of unsaturated 3,5-dieneketones and their corresponding saturated ketones by isomerization or hydrogenation of 4,5-alleneketones (I) of formula (1). R -O-C(R )=CH-R (3), R SO3H (5), R SO3M (6) R , R = H, 1-20C alkyl, aryl or alkylaryl or R and R may combine to form a 5-6 membered ring; R , R = 1-4C alkyl; R ,R = 1-4C alkyl; R , R = halogen, 1-20C alkyl or cycloalkyl optionally substituted with halogen, R is additionally an optionally substituted aryl; and M = cation of an organic or inorganic base.

    8.
    发明专利
    未知

    公开(公告)号：AT252533T

    公开(公告)日：2003-11-15

    申请号：AT00121161

    申请日：2000-09-29

    Applicant: DEGUSSA

    Inventor： NONGYUAN SHI DR ,  HUEBNER FRANK DR ,  DRAPAL BERND ,  PETER RAINER ,  KRILL STEFFEN DR ,  HUTHMACHER KLAUS DR ,  WECKBECKER CHRISTOPH DR

    IPC: B01J31/02 ,  C07B61/00 ,  C07C45/51 ,  C07C45/62 ,  C07C45/69 ,  C07C49/04 ,  C07C49/203

    Abstract: A process for the preparation of unsaturated 4,5-alleneketones comprises reaction of a tertiary propargylalcohol with an alkenylalkylether or a ketal in the presence of an aliphatic sulfonic acid or salt. A process for the preparation of unsaturated 4,5-alleneketones (I) of formula (1) comprises reaction of a tertiary propargylalcohol of formula (2) with an alkenylalkylether of formula (3) or a ketal of formula (4) in the presence of an aliphatic sulfonic acid of formula (5) or sulfonic acid salt of formula (6). An Independent claim is included for a process for the preparation of unsaturated 3,5-dieneketones and their corresponding saturated ketones by isomerization or hydrogenation of 4,5-alleneketones (I) of formula (1). R -O-C(R )=CH-R (3), R SO3H (5), R SO3M (6) R , R = H, 1-20C alkyl, aryl or alkylaryl or R and R may combine to form a 5-6 membered ring; R , R = 1-4C alkyl; R ,R = 1-4C alkyl; R , R = halogen, 1-20C alkyl or cycloalkyl optionally substituted with halogen, R is additionally an optionally substituted aryl; and M = cation of an organic or inorganic base.

    9.
    发明专利
    未知

    公开(公告)号：DE19949796A1

    公开(公告)日：2001-04-19

    申请号：DE19949796

    申请日：1999-10-15

    Applicant: DEGUSSA

    Inventor： SHI NONGYAN ,  HUEBNER FRANK ,  DRAPAL BERND ,  PETER RAINER ,  KRILL STEFFEN ,  HUTHMACHER KLAUS ,  WECKBECKER CHRISTOPH

    IPC: B01J31/02 ,  C07B61/00 ,  C07C45/51 ,  C07C45/62 ,  C07C45/69 ,  C07C49/04 ,  C07C49/203 ,  C07C45/45 ,  C07C49/20

    Abstract: A process for the preparation of unsaturated 4,5-alleneketones comprises reaction of a tertiary propargylalcohol with an alkenylalkylether or a ketal in the presence of an aliphatic sulfonic acid or salt. A process for the preparation of unsaturated 4,5-alleneketones (I) of formula (1) comprises reaction of a tertiary propargylalcohol of formula (2) with an alkenylalkylether of formula (3) or a ketal of formula (4) in the presence of an aliphatic sulfonic acid of formula (5) or sulfonic acid salt of formula (6). An Independent claim is included for a process for the preparation of unsaturated 3,5-dieneketones and their corresponding saturated ketones by isomerization or hydrogenation of 4,5-alleneketones (I) of formula (1). R -O-C(R )=CH-R (3), R SO3H (5), R SO3M (6) R , R = H, 1-20C alkyl, aryl or alkylaryl or R and R may combine to form a 5-6 membered ring; R , R = 1-4C alkyl; R ,R = 1-4C alkyl; R , R = halogen, 1-20C alkyl or cycloalkyl optionally substituted with halogen, R is additionally an optionally substituted aryl; and M = cation of an organic or inorganic base.

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