中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

48 records (took 0.039 seconds)

    Method for producing secondary amine
    1.
    发明专利
    Method for producing secondary amine 有权
    生产二级胺的方法

    公开(公告)号：JP2003055319A

    公开(公告)日：2003-02-26

    申请号：JP2002179034

    申请日：2002-06-19

    Applicant: Basf Ag ,  ビーエーエスエフ アクチェンゲゼルシャフト

    Inventor： NEUMANN PETER ,  MELDER JOHANN-PETER DR ,  BENISCH CHRISTOPH ,  HOEHN ARTHUR ,  PFEFFINGER JOACHIM

    IPC: C07C209/60 ,  C07B61/00 ,  C07C209/64 ,  C07C211/13 ,  C07C211/14

    CPC classification number: C07C209/64 ,  C07C211/13

    Abstract: PROBLEM TO BE SOLVED: To provide a preferable method for producing a secondary amine by which a high yield and a high selectivity are achieved.
    SOLUTION: The secondary amine of formula (I) (R
    1 , R
    2 and A are each shown in the specification) is obtained by reacting a primary amine of formula (II): R
    1 R
    2 N-A-NH
    2 [R
    1 , R
    2 and A are each as previously defined] in the presence of a catalyst containing hydrogen and at least one compound of an atom or an element of groups VIII or IB in the periodic table.
    COPYRIGHT: (C)2003,JPO

    Abstract translation: 要解决的问题：提供一种制备可以实现高产率和高选择性的仲胺的优选方法。 解决方案：式（I）的仲胺（R 1，R 2和A各自在说明书中示出）通过使式（II）的伯胺：R 1 R 2 在含有氢和至少一种元素周期表中VIII或VIII族元素的化合物的催化剂存在下，将NA-NH 2 [R 1，R 2和A各自如前所定义]。

    SIMULTANEOUS PRODUCTION OF PLURAL KINDS OF POLYISOCYANATES
    2.
    发明专利
    SIMULTANEOUS PRODUCTION OF PLURAL KINDS OF POLYISOCYANATES 失效

    公开(公告)号：JP2000026397A

    公开(公告)日：2000-01-25

    申请号：JP17928199

    申请日：1999-06-25

    Applicant: BASF AG

    Inventor： STROEFER ECKHARD ,  PFEFFINGER JOACHIM

    IPC: B01J19/18 ,  C07C263/10 ,  C07C265/08 ,  C07C265/14

    Abstract: PROBLEM TO BE SOLVED: To produce plural kinds of isocyanates at the same time in high yield while suppressing the formation of by-products by reacting the corresponding plural kinds of amines with phosgene in a mixing means and a downstream retention time reactor, separating the reaction mixture and fractionating the products. SOLUTION: Plural kinds of isocyanates (e.g. diphenylmethane diisocyanate and toluylene diisocyanate) are produced at the same time by reacting the corresponding plural kinds of amines (e.g. hexamethylenediamine and diphenylmethanediamine) with phosgene in a mixing means (e.g. a static or dynamic mixer) and a downstream retention time reactor, separating the reaction mixture from excess phosgene and hydrogen chloride and fractionating the reaction mixture into individual isocyanate fractions.

    DISTILLATION COLUMN FOR SEPARATING MIXTURE OF LIQUIDS INTO A PLURALITY OF PURE FRACTIONS
    3.
    发明专利
    DISTILLATION COLUMN FOR SEPARATING MIXTURE OF LIQUIDS INTO A PLURALITY OF PURE FRACTIONS 失效

    公开(公告)号：JPH0780201A

    公开(公告)日：1995-03-28

    申请号：JP19702394

    申请日：1994-08-22

    Applicant: BASF AG

    Inventor： KAIBEL GERD ,  STROEZEL MANFRED ,  PFEFFINGER JOACHIM

    IPC: B01D3/14 ,  B01D3/32

    Abstract: PURPOSE: To prevent heat flow passing through a separation device and to improve the separation efficiency of a distillation column by providing a gas chamber between two walls of the separation device, which functions in the longitudinal direction at the central zone of the distillation column and setting the space between the both walls to a specified value. CONSTITUTION: The distillation column 1 is divided by a separation device 5 into a feeding part 2 and a withdrawing part 3, which separation device 5 functions in the longitudinal direction at the central zone of the distillation column 1. The separation device 5 is constituted of two walls 4 and has a gas chamber between the walls. The distance between the walls is 1 to 50 mm. An inert gas is charged from an inert gas inlet 6 provided at the upper terminal part of the gas chamber and is introduced into a distillation chamber from an inert gas outlet 7 provided at the lower terminal part. A mixture of plural substances A, B, C is fed into a feeding part 2 and the substances are separated according to the order of the volatility of each substance into each pure fraction. The fraction A having high volatility and the fraction C having low volatility are withdrawn from the distillation column 1 as a overhead product and a bottom product, respectively. The fraction B having intermediate volatility is withdrawn from the side part of the distillation column as a side distillate product.

    METHOD FOR PRODUCING SECONDARY AMINE FROM NITRILE
    4.
    发明专利
    METHOD FOR PRODUCING SECONDARY AMINE FROM NITRILE 审中-公开

    公开(公告)号：JP2002241351A

    公开(公告)日：2002-08-28

    申请号：JP2002000179

    申请日：2002-01-04

    Applicant: BASF AG

    Inventor： PFEFFINGER JOACHIM ,  HULLMANN MICHAEL ,  HOEHN ARTHUR ,  FUNKE FRANK DR ,  OHLBACH FRANK ,  GERLACH TILL

    IPC: C07B61/00 ,  C07C209/48 ,  C07C211/05 ,  C07C211/11 ,  C07C211/14

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a secondary amine in a high yield and selectivity by selecting nitrile using hydrogen in the presence of a catalyst. SOLUTION: In this method for producing a secondary amine represented by general formula (II) (X-CH2-)2NH (II) [X is an alkyl, an alkenyl or a cycloalkyl group] (II), a nitrile represented by general formula (III) X-CN (III) is reacted with hydrogen at 20-250 deg.C under 60-350 bar in the presence of 0.1-5 mass % based on the total amount of Rh and a catalyst on a carrier of a RH-containing catalyst to form a mixture of a primary amine represented by general formula (I) X-CH2-NH2 (I) and the secondary amine represented by general formula (II) (X-CH2-)2NH (II) and at least a part of the primary amine separated from the obtained mixture is returned to the reaction.

    PRODUCTION OF PENTANEDIOL FROM ALKOXYDIHYDROPYRAN
    6.
    发明专利
    PRODUCTION OF PENTANEDIOL FROM ALKOXYDIHYDROPYRAN 失效

    公开(公告)号：JP2001064219A

    公开(公告)日：2001-03-13

    申请号：JP2000229528

    申请日：2000-07-28

    Applicant: BASF AG

    Inventor： PFEFFINGER JOACHIM ,  WAHL PETER ,  NOUWEN JAN ,  ELLER KARSTEN DR ,  HOEHN ARTHUR ,  HUNGER JUERGEN

    IPC: B01J23/88 ,  B01J23/755 ,  C07B61/00 ,  C07C29/10 ,  C07C29/132 ,  C07C29/141 ,  C07C31/20

    Abstract: PROBLEM TO BE SOLVED: To directly convert an alkoxydihydropyran to the subject compound by one-stage reaction by using a specific catalyst without using a Raney catalyst. SOLUTION: An alkoxydihydropyran of formula I (R, R', R" and R''' are each a 1-20C saturated hydrocarbon which contains H, O, S and N as hetero atoms and may be substituted with hydroxy, thiol, or the like) [preferably an alkoxydihydropyran of formula II (R is a 1-4C alkyl) is subjected to one-stage reaction with (B) water and (C) hydrogen in the presence of (D) a catalyst containing nickel oxide, zirconium oxide and copper oxide to give (E) 1,5- pentanediol of formula III. The composition of the catalyst component D has preferably 10-75 mass % of NiO, 10-75 mass % or ZrO2, 0-5 mass % of CuO and 0-5 mass % of MoO3 in 100% of the total of prescribed oxides. The reaction is preferably carried out at 50-250 deg.C under 10-30 bar pressure (absolute).

    9.
    发明专利
    未知

    公开(公告)号：DE19809420A1

    公开(公告)日：1999-09-09

    申请号：DE19809420

    申请日：1998-03-05

    Applicant: BASF AG

    Inventor： FRIEDRICH HOLGER ,  PFEFFINGER JOACHIM ,  LEUTNER BERND

    IPC: C01B25/30 ,  B01J39/04 ,  C01D15/04 ,  C01D15/08 ,  C01D15/10 ,  C01D3/14

    Abstract: The invention relates to a method for producing a highly pure lithium salt using lithium carbonate. Said method comprises the following steps: A: treating a mixture comprising lithium carbonate and water with CO2 to produce an aqueous mixture containing lithium hydrogencarbonate; B: passing the aqueous mixture containing lithium hydrogencarbonate through an ion-exchange module; C: precipitating out the lithium carbonate from the aqueous mixture containing lithium hydrogencarbonate obtained in step B after treatment with the ion-exchange module and D: reprocessing the precipitated lithium carbonate or converting the precipitated lithium carbonate into another highly pure lithium salt.

Patent Agency Ranking