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    VERFAHREN ZUR HERSTELLUNG VON MONOETHYLENGLYKOL
    1.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON MONOETHYLENGLYKOL 审中-公开

    公开(公告)号：EP3328820A1

    公开(公告)日：2018-06-06

    申请号：EP16744365.4

    申请日：2016-07-26

    Applicant: BASF SE

    Inventor： DUEFERT, Alexander ,  PINKOS, Rolf ,  REISER, Michael ,  BRUEGGEMANN, Philipp ,  THEIS, Gerhard

    IPC: C07C29/149 ,  C07C31/20

    Abstract: The invention relates to a method for producing monoethylene glycol (MEG) via the metal-catalysed reaction of an oxalic acid dialkyl ester of formula (I), in which R
    1 and R
    2 each independently of one another represent methyl, ethyl, n-propyl or iso-propyl groups, with hydrogen (H
    2 ), wherein the oxalic acid dialkyl ester (I) is used in the form of a melt or dissolved in a solvent, oxalic acid dialkyl ester (I) and H
    2 are used in a molar ratio of H
    2 :oxalic acid dialkyl ester (I) in the region of 4.0 to 30, and the reaction is carried out continuously in a reactor at a sectional density of ≥ 10 m/s, a temperature in the region of 150 to 270°C, a pressure in the region of 150 to 390 bar and in the presence of a chrome-free, heterogeneous, copper-containing catalyst.

    ESTERS AND ETHERS OF 2,2,4,4-TETRAMETHYLCYCLOBUTANE-1,3-DIOL FOR USE AS AROMA CHEMICALS
    5.
    发明公开
    ESTERS AND ETHERS OF 2,2,4,4-TETRAMETHYLCYCLOBUTANE-1,3-DIOL FOR USE AS AROMA CHEMICALS 审中-公开

    公开(公告)号：EP3453750A1

    公开(公告)日：2019-03-13

    申请号：EP17189719.2

    申请日：2017-09-06

    Applicant: BASF SE

    Inventor： GARLICHS, Florian ,  PINKOS, Rolf ,  DUEFERT, Alexander ,  BRU ROIG, Miriam

    IPC: C11B9/00 ,  C07C69/16 ,  C07C69/28 ,  C07C43/184 ,  C07C43/196

    Abstract: The present invention relates to the use of a compound of the general formula (I)

    wherein R 1 is C 1 -C 4 -alkyl or -(C=O)-R 3 , R 2 is hydrogen, C 1 -C 4 -alkyl or -(C=O)-R a , and R 3 and R 4 , independently of one another, are selected from the group consisting of hydrogen and C 1 -C 4 -alkyl, a stereoisomer thereof or a mixture of stereoisomers thereof, as an aroma chemical, to aroma chemical compositions comprising at least one compound of the general formula (I), a stereoisomer thereof or a mixture of stereoisomers thereof, and to a method for preparing a fragranced ready-to-use composition, which comprises incorporating at least one compound of the general formula (I), a stereoisomer thereof or a mixture of stereoisomers thereof, into a ready-to-use composition. The present invention further relates to specific ethers and specific esters of the compounds of the general formula (I) and a method for their preparation.

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