中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

120 records (took 0.034 seconds)

    METHOD FOR CRYSTALLIZING MATERIAL TO BE ISOLATED BY VAPORIZATION AND VAPOR CONDENSATION
    2.
    发明专利
    METHOD FOR CRYSTALLIZING MATERIAL TO BE ISOLATED BY VAPORIZATION AND VAPOR CONDENSATION 失效

    公开(公告)号：JPH10323502A

    公开(公告)日：1998-12-08

    申请号：JP12137598

    申请日：1998-04-30

    Applicant: BASF AG

    Inventor： ECK BERND ,  HEILEK JOERG

    IPC: B01D9/02 ,  B01D9/00 ,  C01D1/30 ,  C07C29/78 ,  C07C31/20 ,  C07C51/43 ,  C07C53/08

    Abstract: PROBLEM TO BE SOLVED: To increase the application range of crystallization and to obtain an economically advantageous method by controlling the partial pressure of the fluid component which is condensed from a liquid mixture containing a specified material to be isolated, to be lower than the partial pressure of the fluid component on a crystallization soln., and controlling the solidifying temp. of the liquid mixture to be lower than the condensation temp. in the liquid mixture. SOLUTION: The material to be isolated means inorg. salts, salts. of org. compds., solvates of these, and preferably hydrates present in a mixture with water or an org. solvent as a fluid. Or, it means a certain kind of org. component in such a mixture with water or an org. solvent that has a narrow boiling temp. range, however, the gas phase and the liquid phase in an equilibrium state under crystallization pressure and a crystallization temp. show

    Method for purifying mixture obtained through catalytic vapor-phase oxidation of propene and/or acrolein, by separation treatment inducing phase formation
    3.
    发明专利
    Method for purifying mixture obtained through catalytic vapor-phase oxidation of propene and/or acrolein, by separation treatment inducing phase formation 审中-公开
    通过分离处理诱导相形成来净化丙烯和/或丙烯酸的催化蒸气相氧化获得的混合物的方法

    公开(公告)号：JP2007091759A

    公开(公告)日：2007-04-12

    申请号：JP2007003878

    申请日：2007-01-11

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

    Inventor： MACHHAMMER OTTO ,  DAMS ALBRECHT DR ,  ECK BERND ,  PROLL THEO

    IPC: C07C51/43 ,  C07C57/04 ,  C07C51/235 ,  C07C51/25 ,  C07C51/44 ,  C07C57/05 ,  C07C57/07

    CPC classification number: C07C51/43 ,  C07C57/04

    Abstract: PROBLEM TO BE SOLVED: To provide a method for purifying acrylic acid or methacrylic acid, whereby high purity and a high yield of the acid are achieved.
    SOLUTION: (a) A mixture comprising the acrylic acid or methacrylic acid is subjected to a stringently defined separation treatment essentially in the absence of an organic solvent, this phase is then taken off, (b) at least a part of a residual phase from step (a) is subjected to a less stringently defined separation treatment, and (c) one of phases formed in step (b) is fed to the stringently defined separation treatment in step (a). This method offers a possibility that the overall economical efficiency of the treatment is increased through circulation and that the economical efficiency is improved even when static crystallization is omitted.
    COPYRIGHT: (C)2007,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种纯化丙烯酸或甲基丙烯酸的方法，从而实现了高纯度和高收率的酸。 解决方案：（a）包含丙烯酸或甲基丙烯酸的混合物基本上在不存在有机溶剂的情况下进行严格限定的分离处理，然后将该相脱除，（b）至少部分 对步骤（a）的残留相进行较不严格的分离处理，和（c）步骤（b）中形成的一相中的步骤（a）中被严格限定的分离处理。 该方法提供了通过循环增加处理的整体经济效率的可能性，并且即使省略静态结晶也提高了经济效率。 版权所有（C）2007，JPO＆INPIT

    PRODUCTION OF PARTICULATE NEOPENTYL GLYCOL HYDROXYPIVALATE, PARTICLE PRODUCED THEREBY AND GRANULATION OF THE PARTICLE WITH GRANULATOR
    4.
    发明专利
    PRODUCTION OF PARTICULATE NEOPENTYL GLYCOL HYDROXYPIVALATE, PARTICLE PRODUCED THEREBY AND GRANULATION OF THE PARTICLE WITH GRANULATOR 失效

    公开(公告)号：JPH10114709A

    公开(公告)日：1998-05-06

    申请号：JP24895597

    申请日：1997-09-12

    Applicant: BASF AG

    Inventor： WEYER HANS-JUERGEN DR ,  ECK BERND ,  BAUMANN DIETER ,  MALTRY BERNHARD

    IPC: B01J2/00 ,  B01J2/02 ,  B01J2/26 ,  C07C67/52 ,  C07C69/675

    Abstract: PROBLEM TO BE SOLVED: To provide a process for producing particles of neopentyl hydroxypivalate(NHP) free from the defects of conventional process while suppressing the generation of cake, provide a particulate NHP having low cake-generation rate and provide a process for granulating the particle with a granulator. SOLUTION: This process for the production of particulate NHP comprises the supply of a molten NHP containing >=3wt.% of NHP crystal based on the total weight of NHP to a cooling zone to solidify the molten NHP. A particulate NHP having low caking tendency can be produced by this process. The particles can be granulated by a method using a granulator for molten material provided with a precooling device 2, a precrystallizer 3, a liquid droplet forming machine 4 or a planar applicator, a cooling belt 6 and a crusher in the case of using a planar applicator.

    METHOD FOR OBTAINING PURE N-VINYL PYRROLIDONE
    6.
    发明申请
    METHOD FOR OBTAINING PURE N-VINYL PYRROLIDONE 审中-公开
    得到纯N-乙烯基吡咯烷酮

    公开(公告)号：WO0190066A3

    公开(公告)日：2002-08-01

    申请号：PCT/EP0106006

    申请日：2001-05-25

    Applicant: BASF AG ,  ECK BERND ,  HEILEK JOERG ,  SCHMIDT-RADDE MARTIN ,  HELFERT HERBERT

    Inventor： ECK BERND ,  HEILEK JOERG ,  SCHMIDT-RADDE MARTIN ,  HELFERT HERBERT

    IPC: C07D201/16 ,  C07D207/26 ,  C07D207/267

    CPC classification number: C07D207/267 ,  C07D201/16

    Abstract: The invention relates to a method for obtaining pure N-vinyl pyrrolidone from raw materials containing N-vinyl pyrrolidone, said method comprising a single or multiple-stage crystallisation method. The method is characterised in that the mother liquor of the first crystallisation stage is either purified by distillation and/or extraction or is returned to a product stream of the production process, said stream containing an N-vinyl pyrrolidone.

    Abstract translation: 公开了一种用于从含N乙烯基吡咯烷酮的粗产物得到纯的N-乙烯基吡咯烷酮，包括单级或多级结晶方法，其特征在于供给所述母液从所述第一结晶阶段或者是蒸馏和/或萃取纯化或在A N的方法 返回制造过程的含乙烯基吡咯烷酮的产物流。

Patent Agency Ranking