中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

712 records (took 0.016 seconds)

    Method and equipment for the preparation of catalytically active bodies
    191.
    发明授权
    Method and equipment for the preparation of catalytically active bodies 失效
    用于制备催化活性物质的方法和设备

    公开(公告)号：US3668149A

    公开(公告)日：1972-06-06

    申请号：US3668149D

    申请日：1969-10-13

    Applicant: STAMICARBON

    Inventor： GEUS JOHN W ,  LEMMENS JAN C

    IPC: B01J21/16 ,  B01D39/06 ,  B01J23/70 ,  B01J23/74 ,  B01J37/00 ,  B01J37/02 ,  B01J37/06 ,  B01J37/08 ,  C04B20/06 ,  B01J11/44

    CPC classification number: C04B20/06 ,  B01D39/06 ,  B01J23/70 ,  B01J37/00 ,  B01J37/0201

    Abstract: Porous catalyst bodies are produced from a thermally stable inorganic carrier material by introducing a suspension of the said carrier material into a liquid immiscible with the suspension medium and heated above the boiling point of the said medium. After evaporation of the suspension medium to an essential extent, the porous catalyst bodies formed are separated from the liquid and subsequently heated to an elevated temperature to improve the strength caracteristics thereof.

    Abstract translation: 通过将所述载体材料的悬浮液引入与所述悬浮介质不混溶的液体中并在所述介质的沸点之上被加热，由热稳定的无机载体材料制备多孔催化剂体。 在将悬浮介质蒸发至必要程度之后，将形成的多孔催化剂体与液体分离，随后加热至升高温度以提高其强度特性。

    Ferromagnetic material
    192.
    发明授权
    Ferromagnetic material 失效
    纤维材料

    公开(公告)号：US3654161A

    公开(公告)日：1972-04-04

    申请号：US3654161D

    申请日：1970-01-05

    Applicant: STAMICARBON

    Inventor： GEUS JOHN W

    IPC: G11B5/706 ,  H01F1/06 ,  C04B35/00

    CPC classification number: G11B5/70631 ,  H01F1/063

    Abstract: THE PRESENT INVENTION CONCERNS A PROCESS FOR THE PREPARATION LOF A FERROMAGNETIC MATERIAL WHICH IS PRECIPITATED IN A FINELY DIVIDED FORM ONTO A CARRIER MATERIAL SUSPENDED IN A SOLUTION CONTAINING THE ELEMENTS TO BE PERCIPITATED. THE CARRIER MATERIAL IS GENERATED IN THE LIQUID IN WHICH THE PRECIPATION OF THE FERROMAGNEITC IN THE MATERIAL WILL BE CARRIED OUT, BY INJECTING A DISSOLVED COMPOUND OF THE CARRIER MATERIAL TO BE FORMED ONTO THE AGITATED LIQUID IN WHICH THE CARRIER MATERIAL IS PRACTICALLY INSLOLUBLE. AN ALKALINE SOLUTION OF SILICA IS INJECTED INTO LIQUID, WHOSE PH VALUE IS LOWER THAN 7, AN ACIDIC SOLUTION OF METAL ION FROM WHICH THE CARRIER MATERIAL MUST BE BUILT UP IS INJECTED INTO THE LIQUID, WHOSE PH VALUE RANGES BETWEEN 4 AND 7, OR A SOLUTION OF THE ELEMENTS FROM WHICH THE CARRIER MATERIAL MUST BE BUILT UP IS INJECTED IN A READILY HYDROLYSABLE FORM IN A WATER-MISCIBLE SOLVENT, INTO WATER AS THE LIQUID. THE METAL IONS USED ARE IONS OF ALUMINIIUM, TITANIUM, TIN OR THORIUM, OR MIXTURES THEREOF, OR USED IS MADE OF HYDROLYSABLE CHLORIDES SUCH AS SICL4, ALCL3, TICL4, SBCL3 RO SNCL4, OR MIXTURES THEREOF, DISSOLVED IN METHYL ALCOHOL, ETHYL ALCOHOL OR ACETONE AND HYDROYSABLE ESTERS OF INORGANIC ACIDS AND ALCOHOLS, SUCH AS AL(OC2H5)3, SB(I-C2H7O)3, DISSOLVED IN METHYL ALCOHOL, ETHYL ALCOHOL OR ACETONE.

    Anionic polymerization of lactams
    193.
    发明授权
    Anionic polymerization of lactams 失效
    LACTAMS的阴离子聚合

    公开(公告)号：US3639359A

    公开(公告)日：1972-02-01

    申请号：US3639359D

    申请日：1969-03-21

    Applicant: STAMICARBON

    Inventor： GARRITSEN JOHAN W ,  KOOIJMAN SEBASTIAAN E M ,  GREGOIRE JOHANNES H C M A ,  VERBRUGGE HENNY

    IPC: C08G69/20 ,  C08G20/18

    CPC classification number: C08G69/20

    Abstract: A PROCESS FOR THE ANIONIC POLYMERIZATION OF LACTAMS IS DISCLOSED, WHEREIN THE LACTAMS ARE POLYMERIZED IN THE PRESENCE OF A CATALYST AND A PROMOTER, WITH THE PROMOTER BEING DI-$-CAPROLACTIM-ETHER-DIHYDROCHLORIDE OR DI-$-CAPROLACTIM-EITHER-MONOHYDROCHLORIDE, WHICH LATTER COMPOUND MAY CONTAIN UP TO 90 MOLE PERCENT OF DI-$-CAPROLACTIM-EITHER. THE PROMOTERS OF THE PRESENT INVENTION ALLOW THE POLYMERIZATION TIME TO BE REDUCED. THE POLYMERIZATION OF LACTAMS PRODUCES USEFUL POLYAMIDES.

    Ethylene polymerization with reduction or interruption of polymerization
    194.
    发明授权
    Ethylene polymerization with reduction or interruption of polymerization 失效
    乙烯聚合与缩聚或中断聚合反应

    公开(公告)号：US3634375A

    公开(公告)日：1972-01-11

    申请号：US3634375D

    申请日：1968-02-26

    Applicant: STAMICARBON

    Inventor： LINDE WIM VAN DER ,  SMIT JACOB M

    IPC: C08F2/00 ,  C08F10/00 ,  C08F1/06

    CPC classification number: C08F10/00 ,  C08F4/28

    Abstract: A PROCESS FOR PREPARING ETHYLENE POLYMERS BY PASSING ETHYLENE THROUGH A REACTOR UNDER POLYMERIZATION CONDITIONS IS DISCLOSED, WHEREIN PERIODICALLY THE POLYMERIZATION IS REDUCED OR INTERRUPTED, WHILE PASSSAGE OF ETHYLENE GAS THROUGH THE REACTOR IS MAINTAINED, WHEREBY POLYETHYLENE DEPOSITED ON THE REACTOR WALLS IS DISSOLVED. HIGHER ETHYLENE CONVERSION IS OBTAINED AND THE RISK OF AN EXPLOSIVE DECOMPOSITION OF ETHYLENE IS REDUCED.

    Process for the recovery of cyclohexanone oxime by plural stage, vacuum distillation per a
    195.
    发明授权
    Process for the recovery of cyclohexanone oxime by plural stage, vacuum distillation per a 失效
    通过一级循环恢复环己酮氧化酶的方法，每次真空蒸馏

    公开(公告)号：US3625835A

    公开(公告)日：1971-12-07

    申请号：US3625835D

    申请日：1970-06-15

    Applicant: STAMICARBON

    Inventor： TERVOORT ADRIANUS ,  BALG THEODORUS

    IPC: B01D3/10

    CPC classification number: C07C29/80

    Abstract: There is disclosed a continuous process for preparing cyclohexanone oxime by reacting cyclohexanone with a solution of a hydroxylammonium salt derived from a weak acid, e.g. phosphoric acid. The reaction takes place in counterflow contact, and in the presence of a water-immiscible or poorly water-miscible organic solvent for the oxime formed. An improved process for accomplishing separation of the resulting oxime from the solvent by rectification and apparatus suited for realizing this process.

    Method for the separation of melamine from a gaseous reaction mixture of melamine,ammonia and carbon dioxide
    196.
    发明授权
    Method for the separation of melamine from a gaseous reaction mixture of melamine,ammonia and carbon dioxide 失效
    用于从甲醇，氨和二氧化碳的气体反应混合物中分离出甲苯的方法

    公开(公告)号：US3598818A

    公开(公告)日：1971-08-10

    申请号：US3598818D

    申请日：1969-11-17

    Applicant: STAMICARBON

    Inventor： KREKELS JACOBUS T C

    IPC: C07D251/60 ,  H01R39/36 ,  C07D55/24

    CPC classification number: C07D251/60 ,  H01R39/36

    Abstract: A PROCESS IS DISCLOSED FOR THE SEPARATION AND RECOVERY OF MELAMINE FROM GASEOUS MIXTURES OF MELAMINE, AMMONIA AND CARBON DIOXIDE OBTAINED IN THE MANUFACTURE OF MELAMINE FROM UREA AND UNDER SUPERATMOPHERIC PRESSURE. THE PROCESS INVOLVES FEEDING A DILUTE SUSPENSION OF MELAMINE CRYSTALS IN A SOLUTION SATURATED WITH AMMONIUM AND CARBON DIOXIDE INTO AT LEAST ONE HYDROCYCLONE AND OBTAINING BY SEPARATION THEREIN (A) A CONCENTRATED AQUEOUS MELAMINE SOLUTION AND (B) A DILUTE MELAMINE SOLUTION; AND RECIRCULATING THIS DILUTE MELAMINE SOLUTION CONTAINING MOST OF THE AMMONIA AND CARBON DIOXIDE COMPONENTS OF THE AFORESAID GASEOUS MIXTURE, TO THE INITIAL COOLING ZONE WHEREIN MELAMINE CRYSTALS ARE FIRST OBTAINED IN THE FORM OF A SUSPENSION IN AN AQUEOUS SOLUTION CONTAINING AMMONIA AND CARBON DIOXIDE.

    Apparatus for discharging liquid fertilizer in large drops
    199.
    发明授权
    Apparatus for discharging liquid fertilizer in large drops 失效
    用于排放大量液体肥料的装置

    公开(公告)号：US3570724A

    公开(公告)日：1971-03-16

    申请号：US3570724D

    申请日：1968-07-08

    Applicant: STAMICARBON

    Inventor： FONTEIN FREERK J ,  PLOEG MARTINUS

    IPC: A01C23/00 ,  A01C23/04 ,  A01M7/00 ,  B67D3/00

    CPC classification number: A01C23/047 ,  A01C23/006 ,  A01M7/0089

    Abstract: Apparatus for discharging liquid fertilizer in the form of large drops, includes a catch vessel having in its sectoral channels bottom a plurality of drain openings through which liquid fertilizer delivered thereto from a liquid fertilizer distributor flows under gravity through drip tubes connected to the drain openings onto the ground. The distributor located centrally above the bottom of the catch vessel can be a vortex chamber or a combination of feed pipe and target plate.

Patent Agency Ranking