中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

38 records (took 0.019 seconds)

    PROCESS FOR PRODUCING OF CATALYST FOR ALPHA-OLEFIN POLYMERIZATION AND FOR POLYMERIZATION OF ALPHA-OLEFIN
    36.
    发明专利
    PROCESS FOR PRODUCING OF CATALYST FOR ALPHA-OLEFIN POLYMERIZATION AND FOR POLYMERIZATION OF ALPHA-OLEFIN 未知

    公开(公告)号：HUT65998A

    公开(公告)日：1994-08-29

    申请号：HU9302677

    申请日：1993-09-22

    Applicant: BASF AG

    Inventor： SAIVE ROLAND ,  FUNK GUIDO ,  FOLLMER GODOFREDO ,  MUELLER HANS-JOACHIM ,  KONRAD RAINER ,  LUX MARTIN ,  GOERTZ HANS-HELMUT

    IPC: C08F4/02 ,  C08F4/22 ,  C08F4/24 ,  C08F10/00

    Abstract: Process for the preparation of a supported catalyst for the polymerisation of alpha -olefins, in which (1) a support gel containing silicon dioxide is prepared by (1.1) introducing a sodium or potassium waterglass solution into a rotating stream of an aqueous mineral acid both longitudinally and tangentially to the stream, spraying the silicic acid hydrosol thus formed in droplet form into a gaseous medium, allowing it to solidify into a hydrogel and freeing the hydrogel thus obtained of salt by washing without prior aging, (1.2) drying the hydrogel resulting from (1.1) to form the support gel, and (2) the support gel (1) is loaded with chromium trioxide or a chromium compound which can be converted into chromium trioxide under the conditions of the process step (3), which results in a chromium-containing support gel, and (3) the chromium-containing support gel (2) is heated in an anhydrous gas stream containing oxygen in a concentration of over 10% by volume for from 10 to 1000 minutes at from 400 to 1100 DEG C, the hydrogel resulting from the process step (1.1) being dried in the process step (1.2) over a time of not more than 60 seconds in a shaping flash dryer at an inlet temperature of from 80 to 400 DEG C .

    PROCESS FOR PRODUCING CARRYING CATALIST USED IN POLYMERIZATION OF ALPHA-OLEFINES
    38.
    发明专利
    PROCESS FOR PRODUCING CARRYING CATALIST USED IN POLYMERIZATION OF ALPHA-OLEFINES 未知

    公开(公告)号：HU9302677D0

    公开(公告)日：1993-12-28

    申请号：HU9302677

    申请日：1993-09-22

    Applicant: BASF AG

    Inventor： MUELLER HANS-JOACHIM ,  FOLLMER GODOFREDO ,  KONRAD RAINER ,  SAIVE ROLAND ,  LUX MARTIN ,  GOERTZ HANS-HELMUT ,  FUNK GUIDO

    IPC: C08F4/02 ,  C08F4/22 ,  C08F4/24 ,  C08F10/00

    Abstract: Process for the preparation of a supported catalyst for the polymerisation of alpha -olefins, in which (1) a support gel containing silicon dioxide is prepared by (1.1) introducing a sodium or potassium waterglass solution into a rotating stream of an aqueous mineral acid both longitudinally and tangentially to the stream, spraying the silicic acid hydrosol thus formed in droplet form into a gaseous medium, allowing it to solidify into a hydrogel and freeing the hydrogel thus obtained of salt by washing without prior aging, (1.2) drying the hydrogel resulting from (1.1) to form the support gel, and (2) the support gel (1) is loaded with chromium trioxide or a chromium compound which can be converted into chromium trioxide under the conditions of the process step (3), which results in a chromium-containing support gel, and (3) the chromium-containing support gel (2) is heated in an anhydrous gas stream containing oxygen in a concentration of over 10% by volume for from 10 to 1000 minutes at from 400 to 1100 DEG C, the hydrogel resulting from the process step (1.1) being dried in the process step (1.2) over a time of not more than 60 seconds in a shaping flash dryer at an inlet temperature of from 80 to 400 DEG C .

Patent Agency Ranking