中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

325 records (took 0.039 seconds)

    DISTILLATION COLUMN FOR SEPARATING MIXTURE OF LIQUIDS INTO A PLURALITY OF PURE FRACTIONS
    1.
    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 The fraction A having high volatility and the fraction C having low volatility are withdrawn from the distillation column 1 as a overhead product and a bottom product, respectively. The fraction B having intermediate volatility is withdrawn from the side part of the distillation column as a side distillate product.

    PRODUCTION OF HIGHER UNSATURATED KETONE
    2.
    发明专利
    PRODUCTION OF HIGHER UNSATURATED KETONE 失效

    公开(公告)号：JP2000178221A

    公开(公告)日：2000-06-27

    申请号：JP32563599

    申请日：1999-11-16

    Applicant: BASF AG

    Inventor： OOST CARSTEN ,  STROEZEL MANFRED ,  ETZRODT HEINZ ,  DIETMAR WELLER ,  RHEUDE UDO ,  KAIBEL GERD ,  KRUG THOMAS ,  SPISKE LUISE ,  HAGEN IEEDIKKE

    IPC: B01J31/14 ,  C07B61/00 ,  C07C45/67 ,  C07C45/74 ,  C07C49/203

    Abstract: PROBLEM TO BE SOLVED: To produce the subject compound useful as an intermediate capable of producing isophytol of a precursor of an essential vitamin E in higher selectivity and higher space time yield by reacting a corresponding α,β-unsaturated alcohol with an alkyl acetoacetate by Carroll reaction. SOLUTION: (A) A corresponding α,β-unsaturated alcohol of formula II is reacted with (B) an alkyl acetoacetate of formula II (R3 is a 1-4C alkyl) in the presence of (C) 0.1-5 mol% organoaluminum compound as a catalyst in a reactor with a fractionating column while eliminating and continuously removing an alcohol of the formula R3-OH and produced carbon dioxide by distillation, and while introducing the components A and C to the reactor, further a calculated amount of the component B thereto preferably at 175-220 deg.C reaction temperature to provide the objective unsaturated ketone of formula I [a dotted line represents an additional C-C bond; R1 is a 1-4C alkyl; R2 is a 4-30C (un)saturated aliphatic or the like].

    PRODUCTION OF GLYOXAL MONOACETAL
    3.
    发明专利
    PRODUCTION OF GLYOXAL MONOACETAL 失效

    公开(公告)号：JPH10182540A

    公开(公告)日：1998-07-07

    申请号：JP33875297

    申请日：1997-12-09

    Applicant: BASF AG

    Inventor： GROENING CARSTEN ,  THERRE JOERG ,  KAIBEL GERD ,  EBEL KLAUS

    IPC: B01J31/08 ,  C07B61/00 ,  C07C45/39 ,  C07C45/52 ,  C07C45/71 ,  C07C47/198

    Abstract: PROBLEM TO BE SOLVED: To provide a new method for industrially advantageously producing a glyoxal monoacetal, enabling to profitably obtain the glyoxal monoacetal by reacting glyoxal and a glyoxal bisacetal with an alcohol under a specific reaction condition. SOLUTION: This method for producing a glyoxal monoacetal of formula I (R , R are each a 1-4C alkyl, a 2-4C alkenyl) comprises reacting the mixture of glyoxal with a glyoxal bisacetal of formula II with an excessive amount of an alcohol of the formula: R OH or R OH or their mixture in the presence of an acidic catalyst until the equilibrium of the reaction is achieved. The acidic catalyst is preferably an acidic ion exchange material, especially preferably the fixed bed of the acidic ion exchange material. The alcohol is preferably methanol. The glyoxal bisacetal, the acidic catalyst and the alcohol are preferably reutilized for the reaction.

    METHOD FOR SEPARATING AZEOTROPIC MIXTURE
    4.
    发明专利
    METHOD FOR SEPARATING AZEOTROPIC MIXTURE 审中-公开

    公开(公告)号：JP2002239302A

    公开(公告)日：2002-08-27

    申请号：JP2002007719

    申请日：2002-01-16

    Applicant: BASF AG

    Inventor： BURST WOLFRAM ,  KAIBEL GERD ,  KUNTZE THOMAS ,  KOENIG JOSEF

    IPC: B01D3/36 ,  C07C17/386 ,  C07C21/12 ,  C07C29/82 ,  C07C31/12

    Abstract: PROBLEM TO BE SOLVED: To provide a method for separating an azeotropic mixture economical and simple from an aspect of process engineering. SOLUTION: The method for separating a liquid mixture comprising at least two kinds of components A and B, which form the azeotropic mixture mutually or along with other component, includes a process (i) for distilling the mixture to be separated in the presence of an auxiliary H, which forms a two-component azeotropic mixture AH or BH having a boiling point lower than that of the auxiliary H along with two kinds of the components A and B, and a process (ii) for isolating an A, H-containing fraction of which the content of B is reduced as compared with the mixture to be separated and a B, H-containing fraction of which the content of A is reduced as compared with the mixture to be separated.

    CONTINUOUS PROCESS FOR PREPARING ACETAL
    5.
    发明专利
    CONTINUOUS PROCESS FOR PREPARING ACETAL 审中-公开

    公开(公告)号：JP2002114728A

    公开(公告)日：2002-04-16

    申请号：JP2001272755

    申请日：2001-09-07

    Applicant: BASF AG

    Inventor： THERRE JORG ,  KAIBEL GERD ,  AQUILA WERNER DR ,  WEGNER GUNTER ,  FUCHS HARTWIG

    IPC: C07C41/50 ,  C07B61/00 ,  C07C41/56 ,  C07C41/58 ,  C07C43/303

    Abstract: PROBLEM TO BE SOLVED: To overcome disadvantages of the prior art and to provide a process for preparing an unsaturated acetal which is easy to regulate and can be operated in a stable manner. SOLUTION: This continuous process for preparing the unsaturated acetal of formula I (wherein, R1 to R7 are each independently hydrogen or a straight- chain or a branched, optionally substituted 1-6C alkyl group; R8 is hydrogen or a saturated or a mono- or a polyunsaturated straight-chain or branched, optionally substituted 1-12C alkyl group or a 3- to a 12-membered saturated or a mono- or a polyunsaturated carbocyclic ring) by reacting 1 mol of an aldehyde of formula II (wherein, R1 to R3 are as defined in the following formula I) with at least 1 mol of an alcohol of formula III (wherein, R5 to R8 are as defined by the following formula I) in the presence of a catalytic amount of an acid while removing water formed during the reaction, which comprises only partially reacting the reactants in a reactional column, concentrating the resultant acetal in at least two successive evaporation stages and returning the recovered reactants to the reactional column.

    LIQUID COOLING DEVICE IN INTERNAL COMBUSTION ENGINES AND PROCESS FOR MANUFACTURING SAME
    7.
    发明申请
    LIQUID COOLING DEVICE IN INTERNAL COMBUSTION ENGINES AND PROCESS FOR MANUFACTURING SAME 审中-公开
    装置用于内燃机的液冷和方法及其

    公开(公告)号：WO2007085641A3

    公开(公告)日：2007-09-13

    申请号：PCT/EP2007050757

    申请日：2007-01-26

    Applicant: BASF AG ,  KORMANN CLAUDIUS ,  KAIBEL GERD ,  NEUMANN DIRK

    Inventor： KORMANN CLAUDIUS ,  KAIBEL GERD ,  NEUMANN DIRK

    IPC: F01P3/02 ,  F02F1/16 ,  F02F1/38 ,  F28F13/00

    CPC classification number: F01P3/02 ,  F01P7/165 ,  F01P2003/027 ,  F01P2003/182 ,  F28D2021/0094 ,  F28F13/185 ,  Y10T29/49231

    Abstract: The invention relates to a liquid cooling device in an internal combustion engine (11) and to a process for manufacturing same. The device according to the invention comprises a cooling circuit (13) having at least one cooling duct (23, 24, 41) for a liquid coolant, the duct being in thermal contact with at least one component (12a, 12b, 31) of the internal combustion engine (11). A wall of the cooling duct (23, 24, 41) that comes into contact with the coolant comprises in at least one partial zone a microstructured surface with a certain porosity and roughness. According to the invention, this device is produced by forming a cooling circuit for a liquid coolant, the circuit comprising cooling ducts that can be brought at least in part into thermal contact with the internal combustion engine, and by generating a microstructured surface on at least part of the walls of the cooling ducts that come into contact with the liquid coolant.

    Abstract translation: 本发明涉及一种用于内燃发动机（11）和它们的制备的方法的液体冷却的装置。 本发明的装置包括具有用于液体冷却剂，其设置有所述内燃机的至少一个部件（12A，12B，31）（11）热接触的至少一个冷却通道（23,24,41），其特征在于一个冷却回路（13） 在局部区域具有与所述冷却通道（23,24,41）的至少一个微结构化表面具有一定的孔隙度和粗糙度的冷却剂壁接触一到来。 根据本发明，这样的装置由用于液体冷却剂形成的冷却回路，具有冷却通道。制造，其可以至少部分地与在热接触的内燃机用的至少一个上的液体冷却剂的一部分使进入接触壁 冷却通道产生一个微结构化表面。

    9.
    发明专利
    未知

    公开(公告)号：DE50210198D1

    公开(公告)日：2007-07-05

    申请号：DE50210198

    申请日：2002-02-06

    Applicant: BASF AG

    Inventor： BOHNER GERD ,  KINDLER KLAUS ,  PAHL MELANIE ,  KAIBEL GERD

    IPC: C07C11/167 ,  B01D3/40 ,  C07C7/08

    Abstract: A process for recovering crude 1,3-butadiene from a C 4 fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion (A), a second subregion (B) and a lower common column region (C) and which is preceded by an extractive scrubbing column (K) is proposed.

    10.
    发明专利
    未知

    公开(公告)号：DE50207749D1

    公开(公告)日：2006-09-14

    申请号：DE50207749

    申请日：2002-12-06

    Applicant: BASF AG

    Inventor： SIRCH TILMAN ,  KAIBEL GERD ,  WARTINI ALEXANDER ,  DERNBACH MATTHIAS

    IPC: C07C29/38 ,  C07C29/80 ,  C07B61/00 ,  C07C29/141 ,  C07C31/22

    Abstract: Trimethylolpropane is isolated from a reaction mixture which has been obtained by reaction of n-butyraldehyde with formaldehyde in the presence of a base and, if appropriate, hydrogenation of the resulting mixture by distilling the mixture by means of a dividing wall column or a distillation column with a precolumn or a distillation column with an after-column. The process has low capital costs and a low energy consumption and gives reduced formation of high-boiling by-products.

Patent Agency Ranking