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公开(公告)号：JPH11246608A
公开(公告)日：1999-09-14
申请号：JP36457698
申请日：1998-12-22
Applicant: BASF AG
Inventor： LANGE ARMIN , MICKLITZ WOLFGANG DR , KARER RAINER , EVERTZ KASPAR DR , MIHAN SHAHRAM DR , FEINDT HANS-JACOB DR , HECKER MANFRED DR , BAUER PETER , ROSENDORFER PHILIPP DR
Abstract: PROBLEM TO BE SOLVED: To avoid the production of a polymer deposit in a circulating gas line and carry out the continuous vapor-phase polymerization by polymerizing a mixture of ethylene and/or propene with a specific olefin under specific conditions. SOLUTION: A catalyst poison having a higher boiling point than the maximum temperature in a circulating gas line in an amount so as not to cause a great loss in the productivity of the catalyst in a vapor-phase polymerization reactor is metered and fed to the circulating gas line when carrying out the continuous vapor phase polymerization of a mixture of ethylene and/or propene with a C3 -C8 -α-monoolefin in the presence of a catalyst in the vapor phase in a finely dispersed polymeric bed in the vapor-phase polymerization reactor under conditions of 30-125 deg.C and 1-100 bar while removing heat of polymerization by circulating a reactor gas. One or more kinds of compounds having a functional group selected from NR2 , NR, OR, O, =O, OS, S and =S (R is H or a 1-8C alkyl) are preferably used as the catalyst poison.
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公开(公告)号：JPH10130321A
公开(公告)日：1998-05-19
申请号：JP28507097
申请日：1997-10-17
Applicant: BASF AG
Inventor： ROSENDORFER PHILIPP DR , ECK PETER
Abstract: PROBLEM TO BE SOLVED: To obtain the subject catalyst which can produce a polymer, for example, an α-olefin polymer of a high molecular weight as well as narrow molecular weight distribution by allowing a chromium compound to coalesce into the catalyst-supporting material and firing the coalesced product. SOLUTION: (A) A chromium compound is allowed to coalesce into (B) the supporting material and they are fired at 400-1,100 deg.C, then treated with (C) a moisture and inactive gas mixture. The component A is SiO2 , Al2 O3 , MgO, ZrO2 , TiO2 , B2 O3 , CaO, ZnO or their mixture or silica gel. The treatment with the component C is preferably carried out in a gas-phase fluidized bed at 20-100 deg.C and nitrogen or a rare gas such as argon is preferably used as the component C.
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Patent Agency Ranking
公开(公告)号：DE19754380A1
公开(公告)日：1999-06-10
申请号：DE19754380
申请日：1997-12-09
Applicant: BASF AG
Inventor： BAUER PETER , LANGE ARMIN DR , KARER RAINER , ROSENDORFER PHILIPP DR , HECKER MANFRED DR , SCHWEIER GUENTHER DR , MICKLITZ WOLFGANG DR , EVERTZ KASPAR DR , FEINDT HANS-JACOB DR
Abstract: The invention relates to a continuous gas phase fluidization method for producing ethylene homopolymerisates and copolymerisates with a density (d) of 0.87 to 0.97 g/cm . According to said method, ethylene or mixtures of ethylene and C3- to C8- alpha -monoolefins are (co)polymerised in the polymerisation zone of a gas phase fluidized bed reactor at pressures of 1 to 100 bar and at temperatures of 30 to 125 DEG C in the gas phase in an intermixed bed of fine particulate polymerisate in the presence of a supported chromium catalyst. The polymerisation heat produced is evacuated by cooling the reactor gas, said reactor gas being guided in a closed circuit, and the resulting (co)polymerisate is transferred out of the gas phase fluidized bed reactor. In order to produce a (co)polymerisate of a pre-selected density (d), the (co)polymerisation is carried out at a temperature within a range limited by an upper envelope of equation (I) and a lower envelope of equation (II), the variables in said equations having the following meanings: TH = the highest reaction temperature in DEG C; TN = the lowest reaction temperature in DEG C; and d'= the numerical value of the density (d) of the (co)polymerisate to be produced.
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公开(公告)号：DE19800020A1
公开(公告)日：1999-07-08
申请号：DE19800020
申请日：1998-01-05
Applicant: BASF AG
Inventor： LANGE ARMIN DR , MICKLITZ WOLFGANG DR , KARER RAINER , EVERTZ KASPAR DR , MIHAN SHAHRAM DR , FEINDT HANS-JACOB DR , HECKER MANFRED DR , BAUER PETER , ROSENDORFER PHILIPP DR
Abstract: Continuous gas phase polymerization for producing ethylene homopolymers and -copolymers, comprises polymerizing ethylene or monoolefin from but-1-en, pent-1-en, 2-methylpentene, hex-1-en, hept-1-en and oct-1-en in the a polymerization reactor; and endowing a catalyst poison with boiling point higher than a circle gas pipeline, and molecular weight greater than 100 g/mol at a position after the reactor, but before the cooler and compressor. Continuous gas phase polymerization for producing ethylene homopolymers and -copolymers, comprises polymerizing ethylene and/or monoolefin from but-1-en, pent-1-en, 2-methylpentene, hex-1-en, hept-1-en or oct-1-en, in the polymerization zone of a gas phase polymerization reactor at 30-125[deg]C and 1-100 bar in the gaseous phase in a finely divided polymer bed, in the presence of a metallocene catalyst in carrier form polymer, where a reactor gas is lead into the circle gas pipeline for the removal of the polymerization heat; and endowing a catalyst poison with boiling point higher than circle gas pipeline and molecular weight greater than 100 g/mol at a position after the reactor but before the cooler and compressor, for preventing polymer linings, such that the productivity of the catalyst is not essentially affected in the reactor.
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公开(公告)号：DE19716239A1
公开(公告)日：1998-10-22
申请号：DE19716239
申请日：1997-04-18
Applicant: BASF AG
Inventor： MIHAN SHAHRAM DR , LANGE ARMIN DR , ROSENDORFER PHILIPP DR , HACK JOHANNES
Abstract: The invention relates to a method for polymerizing alpha -olefins in a gaseous phase at a temperature ranging from 30 to 150 DEG C and at a pressure between 5 and 80 bars with a catalyst or a catalyst mixture which contains, as an antistatic agent, 0.1-5 wt. % ZnO and/or water-free MgO in relation to the total catalyst mixture. The inventive method excludes a method according to which the catalyst mixture contains a chrome catalyst and an MgO-based Ziegler catalyst which is modified with an alkene and alkylaluminium hydride and contains free MgO, the total MgO volume being no less than 2 wt. % of the catalyst mixture.
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公开(公告)号：MY132908A
公开(公告)日：2007-10-31
申请号：MYPI9801671
申请日：1998-04-15
Applicant: BASF AG
Inventor： LANGE ARMIN , ROSENDORFER PHILIPP DR , HACK JOHANNES , MIHAN SHAHRAM
Abstract: (ALPHA)-OLEFINS ARE POLYMERIZED IN THE GAS PHASE AT FROM 30 TO 150°C AND A PRESSURE OF FROM 5 TO 80 BAR USING A CATALYST OR A CATALYST MIXTURE CONTAINING AS ANTISTATIC AGENT FROM 0.1 TO 5 BY WEIGHT OF ZNO AND/OR ANHYDROUS MG0, BASED ON THE TOTAL AMOUNT OF THE CATALYST MIXTURE, EXCEPT FOR A PROCESS IN WHICH THE CATALYST MIXTURE COMPRISES A CHROMIUM CATALYST AND MGO-SUPPORTED ZIEGLER CATALYST WHICH IS MODIFIED WITH AN ALKENE AND WITH ALKYLALUMINUM HYDRIDE AND ALSO COMPRISES FREE MGO AND THE TOTAL AMOUNT OF THE MGO IS NOT LESS THAN 2 BY WEIGHT OF THE CATALYST MIXTURE.
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公开(公告)号：DE19643512A1
公开(公告)日：1998-04-23
申请号：DE19643512
申请日：1996-10-22
Applicant: BASF AG
Inventor： ROSENDORFER PHILIPP DR , ECK PETER
Abstract: Production of supported chromium catalysts comprises charging the support with chromium compounds and calcining at 400-1100 degrees C. After calcination, the catalyst is treated with an inert gas mixture containing water.
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