中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

40 records (took 0.017 seconds)

    VERFAHREN ZUR HERSTELLUNG EINES AROMATISCHEN POLYAMINGEMISCHES
    35.
    发明公开
    VERFAHREN ZUR HERSTELLUNG EINES AROMATISCHEN POLYAMINGEMISCHES 审中-公开

    公开(公告)号：EP3405451A1

    公开(公告)日：2018-11-28

    申请号：EP17701642.5

    申请日：2017-01-12

    Applicant: BASF SE

    Inventor： LADNAK, Viktor ,  TAURO, Silvia ,  HEINEN, Kerstin ,  THIELE, Kai ,  METZNER, Klaus-Peter ,  MATTKE, Torsten

    IPC: C07C209/78 ,  C07C211/50

    Abstract: The invention relates to a method for producing an aromatic polyamine mixture that contains 4,4'-methylene diphenyl amine and higher homologues of MDA, by (i) reacting aniline with formaldehyde using an acid catalyst to form a raw-product mixture (I), (ii) neutralising the raw-product mixture (I) and separating the resulting salts; (iii) separating aniline; (iv) distilling the obtained raw-product mixture by separating (iv-1) a mixture (II) consisting of MDA isomers (II-1) having 8 to 20 wt.% 4,4'-methylene diphenyl amine and a maximum of 0.3 wt.% of secondary components (II-2), and (iv-2) a low boiling mixture consisting of at least 55 wt.% secondary components (II-2) and MDA isomers (II-1); and (v) recirculating the mixture (II).

    VERFAHREN ZUR TRENNUNG EINES PHOSGEN UND CHLORWASSERSTOFF ENTHALTENDEN STOFFSTROMS
    36.
    发明公开
    VERFAHREN ZUR TRENNUNG EINES PHOSGEN UND CHLORWASSERSTOFF ENTHALTENDEN STOFFSTROMS 审中-公开
    一种分离含磷和氯化物的流体流的方法

    公开(公告)号：EP3268349A1

    公开(公告)日：2018-01-17

    申请号：EP16709414.3

    申请日：2016-03-10

    Applicant: BASF SE

    Inventor： SCHELLING, Heiner ,  MATTKE, Torsten ,  PALLASCH, Hans-Juergen ,  THIELE, Kai

    IPC: C07C263/10 ,  C07C263/20 ,  C01B31/28

    Abstract: The invention relates to a method for separating a phosgene- and hydrogen chloride-containing material flow (5), wherein the hydrogen chloride- and phosgene-containing material flow (5) is supplied to a distillation column (1), a phosgene-containing flow (7) being removed at the base of the distillation column (1) and a substantially hydrogen chloride-containing material flow (9) being removed at the top of the column. At least one portion of the material flow (9) removed at the top is compressed and at least partially condensed, and at least one portion of the fluid and compressed substantially hydrogen chloride-containing material flow is depressurised and returned as a return flow into the distillation column (1) at the top.

    VERFAHREN ZUR AUFREINIGUNG VON 4,4'-METHYLENDIPHENYLDIISOCYANAT ENTHALTENDEN MISCHUNGEN
    37.
    发明公开
    VERFAHREN ZUR AUFREINIGUNG VON 4,4'-METHYLENDIPHENYLDIISOCYANAT ENTHALTENDEN MISCHUNGEN 有权
    法提纯4,4-含有异氰酸酯混合工

    公开(公告)号：EP2640695A1

    公开(公告)日：2013-09-25

    申请号：EP11782619.8

    申请日：2011-11-15

    Applicant: BASF SE

    Inventor： BOCK, Michael ,  JACOBS, Johannes ,  THIELE, Kai ,  MERTEN, Anne-Kathrin

    IPC: C07C263/20 ,  C07C265/14

    CPC classification number: C07C263/20 ,  C07C265/14

    Abstract: The invention relates to a process for purifying mixtures comprising 4,4'-methylene diphenyl diisocyanate, comprising the distillative purification of a mixture I comprising 4,4'-methylene diphenyl diisocyanate having a content of hydrolysable chlorine to ASTM D4663-10 of more than 100 ppm by means of a column K1, wherein the gaseous stream consisting of mixture I is contacted in column K1 with at least one liquid compound A which has a boiling point which is the same as or higher than 4,4'-methylene diphenyl diisocyanate and which has a content of hydrolysable chlorine to ASTM D4663-10 of at most 100 ppm, and wherein the gaseous stream O which is obtained at the top of the column and comprises 4,4'-methylene diphenyl diisocyanate has a content of hydrolysable chlorine to ASTM D4663-10 of at most 100 ppm.

    VERFAHREN ZUR HERSTELLUNG VON AROMATISCHEN ISOCYANATEN
    38.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON AROMATISCHEN ISOCYANATEN 有权
    用于生产芳族异氰酸

    公开(公告)号：EP2323973B1

    公开(公告)日：2012-03-21

    申请号：EP09781542.7

    申请日：2009-08-06

    Applicant: BASF SE

    Inventor： PENZEL, Ulrich ,  MATTKE, Torsten ,  WÖLFERT, Andreas ,  JACOBS, Johannes ,  CHENG, Tsung-Chieh ,  HEINEN, Kerstin ,  STROEFER, Eckhard ,  MAIXNER, Stefan ,  MACKENROTH, Wolfgang ,  TRAGUT, Christian ,  THIELE, Kai ,  WON, Myung Un

    IPC: C07C263/10

    CPC classification number: C07C263/10 ,  C07C265/14

    Abstract: The invention relates to a method for producing isocyanates through reaction of the corresponding amines with phosgene in the liquid phase, optionally in the presence of at least one inert medium, in which first the amine and the phosgene are mixed in a mixing chamber (1) to form a reaction mixture and the reaction mixture is fed to a reactor, wherein the amine is added through an opening (3) that is disposed coaxially to the mixing chamber (1) and wherein the phosgene is added through feed openings (5) in at least two planes (7, 9) disposed perpendicular to the axis (11) of the mixing chamber (1), or the phosgene is added through the opening (3) that is coaxial to the mixing chamber and the amine is added through the feed openings (5) in at least two planes (7, 9) disposed perpendicular to the axis (11) of the mixing chamber (1). At least one plane (9) is disposed upstream in the main flow direction of the reaction mixture and at least one plane (7) is disposed downstream relative to the opening (3) disposed coaxially to the mixing chamber (1). The average residence time of the reaction mixture in the mixing chamber (1) is no more than 20 ms.

Patent Agency Ranking