中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

98 records (took 0.021 seconds)

    82.
    发明专利
    未知

    公开(公告)号：FI960098A

    公开(公告)日：1996-01-09

    申请号：FI960098

    申请日：1996-01-09

    Applicant: BASF AG

    Inventor： ROHDE WOLFGANG ,  SAIVE ROLAND ,  GOERTZ HANS-HELMUT ,  SCHWEIER GUENTHER

    IPC: C08F4/02 ,  C08F4/639 ,  C08F4/6392 ,  C08F4/69 ,  C08F10/00 ,  C08F

    Abstract: Polyalk-1-enes are prepared by polymerization of alk-1-enes with the aid of the compound bis(cyclopentadienyl)-chromium(II)in which the cyclopentadienyl rings may carry inert organic radicals, said compound being adsorbed on an inorganic oxide carrier, by a process in which the polymerization is carried out in the presence of an organometallic compound of a metal of main groups I to III or of a metal hydride, in particular of n-butyl-lithium.

    83.
    发明专利
    未知

    公开(公告)号：NO942828L

    公开(公告)日：1995-02-01

    申请号：NO942828

    申请日：1994-07-29

    Applicant: BASF AG

    Inventor： LUX MARTIN ,  FUNK GUIDO ,  SAIVE ROLAND ,  GOERTZ HANS-HELMUT ,  KONRAD RAINER

    IPC: C09K3/16 ,  C08F2/34 ,  C08F2/44 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08K5/17 ,  C08K5/20 ,  C08L23/02

    Abstract: A process for the preparation of homopolymers of ethylene or copolymers of ethylene with secondary amounts of other C3- to C12-alk-1-enes by catalytic polymerisation in a suspension or in the gas phase in the presence of an antistatic at a temperature of from 50 to 120 DEG C and at a pressure of from 5 to 50 bar, characterised in that the antistatic employed is a mixture of the following substances: a) a metal salt of medialanic acid of formula (I) , b) a metal salt of an anthranilic acid of formula (II) , where the organic radical R is either alpha ) -CO-(CH2)x-CH3 (III alpha ) or ss) -CO-(CH2)y-CH=CH-(CH2)z-CH3 (IIIss), where x, y and z are each an integer, and x is in the range from 6 to 18, y is in the range from 1 to 16, z is in the range from 1 to 16 and y + z is in the range from 4 to 17, and c) a polyamine obtainable by reacting epichlorohydrin with an aliphatic primary monoamine or an N-alkylalkylenediamine of the formula (IV> R NH-R -NH2 (IV), where R is a C8-C24-alkyl radical and R is a C2-C6-alkylene radical. d

    84.
    发明专利
    未知

    公开(公告)号：FI943522A

    公开(公告)日：1995-02-01

    申请号：FI943522

    申请日：1994-07-27

    Applicant: BASF AG

    Inventor： LUX MARTIN ,  FUNK GUIDO ,  SAIVE ROLAND ,  GOERTZ HANS-HELMUT ,  KONRAD RAINER

    IPC: C09K3/16 ,  C08F2/34 ,  C08F2/44 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08K5/17 ,  C08K5/20 ,  C08L23/02 ,  C08F210/16

    Abstract: A process for the preparation of homopolymers of ethylene or copolymers of ethylene with secondary amounts of other C3- to C12-alk-1-enes by catalytic polymerisation in a suspension or in the gas phase in the presence of an antistatic at a temperature of from 50 to 120 DEG C and at a pressure of from 5 to 50 bar, characterised in that the antistatic employed is a mixture of the following substances: a) a metal salt of medialanic acid of formula (I) , b) a metal salt of an anthranilic acid of formula (II) , where the organic radical R is either alpha ) -CO-(CH2)x-CH3 (III alpha ) or ss) -CO-(CH2)y-CH=CH-(CH2)z-CH3 (IIIss), where x, y and z are each an integer, and x is in the range from 6 to 18, y is in the range from 1 to 16, z is in the range from 1 to 16 and y + z is in the range from 4 to 17, and c) a polyamine obtainable by reacting epichlorohydrin with an aliphatic primary monoamine or an N-alkylalkylenediamine of the formula (IV> R NH-R -NH2 (IV), where R is a C8-C24-alkyl radical and R is a C2-C6-alkylene radical. d

    87.
    发明专利
    未知

    公开(公告)号：FI934151A0

    公开(公告)日：1993-09-22

    申请号：FI934151

    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