Patents by Inventor Rainer Konrad
Rainer Konrad has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5625013Abstract: A process for the preparation of a supported catalyst for the polymerization of .alpha.-olefins, in which(1) a silicon dioxide-containing support gel is prepared by(1.1) introducing a sodium water glass or potassium water glass solution into a swirling stream of an aqueous mineral acid longitudinally and tangentially to the stream, spraying the resultant silica hydrosol in drop form into a gaseous medium and allowing it to solidify to form a hydrogel, and freeing the resultant hydrogel from salts by washing without prior ageing,(1.2) drying the hydrogel resulting from (1.1) to form the support gel,(2) the support gel (1) is charged with chromium trioxide or a chromium compound which can be converted into chromium trioxide under the conditions of process step (3), giving a chromium-containing support gel, and(3) the chromium-containing support gel (2) is heated at from 400.degree. to 1100.degree. C.Type: GrantFiled: May 24, 1995Date of Patent: April 29, 1997Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Mueller, Godofredo Follmer, Rainer Konrad, Roland Saive, Martin Lux, Hans-Helmut Goertz, Guido Funk
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Patent number: 5557021Abstract: A novel Phillips catalyst for the copolymerization of ethylene with .alpha.-olefins, contains, as a catalytically active component, a finely divided, aluminum silicate-supported, phosphorus-containing chromium catalyst. This can be prepared by applying at least one organic phosphorus(III), (IV) and/or (V) compound and at least one chromium(III) compound which does not react with said phosphorus compounds under the reaction conditions used, in succcession in any order or simultaneously, to a finely divided aluminum silicate hydrogel or xerogel with formation of a catalyst intermediate and activating the catalyst intermediate at elevated temperatures in an oxidizing atmosphere, with the result that the chromium catalyst is formed. The novel Phillips catalyst gives ethylene/.alpha.-olefin copolymers in which the comonomers are more uniformly distributed over the copolymer chains than is the case with ethylene/.alpha.-olefin copolymers which have been prepared with the aid of conventional Phillips catalysts.Type: GrantFiled: August 8, 1995Date of Patent: September 17, 1996Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Mueller, Kaspar Evertz, Siegfried Weber, Guido Funk, Rainer Konrad, Roland Saive
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Patent number: 5480852Abstract: A novel Phillips catalyst for the copolymerization of ethylene with .alpha.-olefins, contains, as a catalytically active component, a finely divided, aluminum silicate-supported, phosphorus-containing chromium catalyst. This can be prepared by applying at least one organic phosphorus(III), (IV) and/or (V) compound and at least one chromium(III) compound which does not react with said phosphorus compounds under the reaction conditions used, in succcession in any order or simultaneously, to a finely divided aluminum silicate hydrogel or xerogel with formation of a catalyst intermediate and activating the catalyst intermediate at elevated temperatures in an oxidizing atmosphere, with the result that the chromium catalyst is formed. The novel Phillips catalyst gives ethylene/.alpha.-olefin copolymers in which the comonomers are more uniformly distributed over the copolymer chains than is the case with ethylene/.alpha.-olefin copolymers which have been prepared with the aid of conventional Phillips catalysts.Type: GrantFiled: May 23, 1994Date of Patent: January 2, 1996Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Mueller, Kaspar Evertz, Siegfried Weber, Guido Funk, Rainer Konrad, Roland Saive
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Patent number: 5455216Abstract: A process for the preparation of a supported catalyst for the polymerization of .alpha.-olefins, in which(1) a silicon dioxide-containing support gel is prepared by(1.1) introducing a sodium water glass or potassium water glass solution into a swirling stream of an aqueous mineral acid longitudinally and tangentially to the stream, spraying the resultant silica hydrosol in drop form into a gaseous medium and allowing it to solidify to form a hydrogel, and freeing the resultant hydrogel from salts by washing without prior ageing,(1.2) drying the hydrogel resulting from (1.1) to form the support gel,(2) the support gel (1) is charged with chromium trioxide or a chromium compound which can be converted into chromium trioxide under the conditions of process step (3), giving a chromium-containing support gel, and(3) the chromium-containing support gel (2) is heated at from 400.degree. to 1100.degree. C.Type: GrantFiled: September 21, 1993Date of Patent: October 3, 1995Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Mueller, Godofredo Follmer, Rainer Konrad, Roland Saive, Martin Lux, Hans-Helmut Goertz, Guido Funk
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Patent number: 5453475Abstract: Low density ethylene copolymers are obtainable by adding an aromatic hydrocarbon solution of a catalyst system, containing, as active components, metallocene complexes of metals of subgroups IV and V of the Periodic Table and oligomeric alumina compounds, to a mixture containing ethylene, comonomers and aliphatic hydrocarbons.Type: GrantFiled: June 14, 1994Date of Patent: September 26, 1995Assignee: Basf AktiengesellschaftInventors: Bernhard Rieger, Dieter Lilge, Kaspar Evertz, Rainer Konrad
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Patent number: 5414064Abstract: Homopolymers of ethylene or copolymers of ethylene with minor amounts of other C.sub.3 -C.sub.12 -alk-1-enes are prepared by catalytic polymerization in a suspension or in the gas phase in the presence of an antistatic agent at from 50 to 120.degree. C. and from 5 to 50 bar by a process in which the antistatic agent used is a mixture of the following substances:a) a metal salt of medialanic acid of the formula (I) ##STR1## b) a metal salt of an anthranilic acid of the general formula (II) ##STR2## where the organic radical R.sup.1 is either.alpha.)--CO--(CH.sub.2).sub.x --CH.sub.3 (II.alpha.)or.beta.)--CO--(CH.sub.2).sub.y --CH.dbd.CH--(CH.sub.2).sub.z --CH.sub.3(III.beta.)and x, y and z are each an integer and are from 6 to 18 for x, from 1 to 16 for y, from 1 to 16 for z and from 4 to 17 for y+z, andc) a polyamine obtainable by reacting epichlorohydrin and an aliphatic primary monoamine or an N-alkylalkylenediamine of the general formula (IV)R.sup.2 NH--R.sup.3 --NH.sub.2 (IV),whereR.sup.2 is C.sub.8 -C.Type: GrantFiled: July 14, 1994Date of Patent: May 9, 1995Assignee: BASF AktiengesellschaftInventors: Martin Lux, Guido Funk, Roland Saive, Hans-Helmut Goertz, Rainer Konrad
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Patent number: 5352658Abstract: A novel Phillips catalyst for the homopolymerization of ethylene and the copolymerization of ethylene with .alpha.-olefins contains, as a catalytically active component, a chromium catalyst supported on a finely divided aluminum silicate gel, modified with a fluoride and activated in an oxidizing atmosphere at elevated temperatures. The finely divided aluminum silicate gel (carrier gel) used here has an alumina content of from 0.5 to 6% by weight, the alumina being concentrated in the surface region of the carrier gel particles. The novel Phillips catalyst has high productivity and gives high molecular weight ethylene homopolymers and copolymers which have excellent low temperature impact strength and do not tend to swell in the blow molding process on emergence from the extruder die.Type: GrantFiled: February 11, 1993Date of Patent: October 4, 1994Assignee: BASF AktiengesellschaftInventors: Kaspar Evertz, Roland Saive, Guido Funk, Peter Koelle, Rainer Konrad, Hans Gropper
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Patent number: 5324697Abstract: A novel Phillips catalyst for the homopolymerization of ethylene and the copolymerization of ethylene with .alpha.-olefins contains as catalytically active components a specific chromium catalyst on an aluminum phosphate support and cocatalysts of the formula I to IV, ##STR1## where M is lithium, sodium and potassium,M.sup.1 is magnesium and zinc,M.sup.2 is boron and aluminum,R is C.sub.1 -C.sub.10 -alkyl and C.sub.6 -C.sub.20 -aryl,R.sup.1 is R and C.sub.1 -C.sub.10 -alkoxy and C.sub.6 -C.sub.20 -aryloxy,X is chlorine, bromine and iodine,n is 0, 1 and 2The chromium catalyst on an aluminum phosphate support can be obtained by applying chromium compounds to a finely divided aluminum phosphate with a P:A1 molar ratio near to or equal to 1 and a pore volume of >1 cm.sup.3 /g and activating the resulting intermediate at elevated temperatures in an oxidizing atmosphere. The novel Phillips catalyst has an exceptionally long duration of activity and its productivity can be increased further by adding hydrogen.Type: GrantFiled: June 26, 1992Date of Patent: June 28, 1994Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Mueller, Rainer Konrad, Guenther Schweier, Siegfried Weber, Roland Saive, Peter Koelle
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Patent number: 5321189Abstract: A process for propene oligomerization catalyzed by transition metal complexes in liquid phase to give propene oligomers with a high content of terminal double bonds, comprises oligomerizing propene in the presence of a catalyst of the formula ICp.sub.2 MX.sub.2 Iwhere Cp is an unsubstituted cyclopentadienyl unit and/or a mono-C.sub.1 -C.sub.4 -alkylcyclopentadienyl unit, M is zirconium or hafnium and the ligands X are each hydride and/or halide and/or methyl, and in the presence of an aluminoxane cocatalyst, and where the ratio of the amounts of the catalyst I and the aluminoxane cocatalyst is such that the M/Al atomic ratio is from 1:250 to 1:1000, employing a temperature of from 50.degree. to 110.degree. C. and a pressure of from 30 to 100 bar.Type: GrantFiled: February 25, 1993Date of Patent: June 14, 1994Assignee: BASF AktiengesellschaftInventors: Hans-Joachim Mueller, Bernd L. Marczinke, Juergen Kerth, Rainer Konrad, Guenther Schweier, Max Strohmeyer, Bernhard Rieger
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Patent number: 5063016Abstract: For the production of extrudates of ultra-high molecular weight polyethylene, finely divided polyethylene or polyethylene powder is introduced into the cooled feed zone of a single-screw extruder and compressed therein, melted in a transport zone of the extruder and discharge with shaping of the extrudate and cooling. The polyethylene is processed in the transport zone using a velocity gradient of from 50 to 1,000 sec.sup.-1 in the radial play between the screw and the extruder barrel, heated to 180.degree.-280.degree. C. and then transferred to a screw-free zone in which final shaping of the extrudate is effected.Type: GrantFiled: May 9, 1990Date of Patent: November 5, 1991Assignee: BASF AktiengesellschaftInventors: Peter Bauer, Rainer Konrad, Herbert Morgenstern, Horst Schuch
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Patent number: 5039765Abstract: High density ethylene polymers are prepared by polymerizing the monomers in the presence of a Ziegler catalyst system by a process in which the resulting solid ethylene polymer is reacted in the melt with an additive capable of binding acids by esterification. The ester-forming additives are preferably epoxide compounds.Type: GrantFiled: October 31, 1989Date of Patent: August 13, 1991Assignee: BASF AktiengesellschaftInventors: Roland Saive, Guido Funk, Juergen Schmidt-Thuemmes, Rainer Konrad, Peter Bauer
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Patent number: 4845176Abstract: Ethene homopolymers and ethene copolymers with minor amounts of higher .alpha.-monoolefins are prepared by polymerization of the monomer or monomers using a chromium trioxide catalyst which is obtained by a method in which (1) a finely divided, porous, silicate carrier is laden with (2) chromium trioxide or a chromium compound which is converted to chromium trioxide under the conditions of stage (3), and then (3) the intermediate resulting from stage (2) is heated in an oxygen-containing gas stream. In this process, a cocatalyst which consists of a lithiumalkyl used in addition to the chromium trioxide catalyst.Type: GrantFiled: October 8, 1987Date of Patent: July 4, 1989Assignee: BASF AktiengsellschaftInventors: Rainer Konrad, Rainer Hemmerich, Rudolf Mueller-Mall, Guenther Schweier
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Patent number: 4814308Abstract: Ethene polymerization by Phillips catalysis is carried out using (1) a supported catalyst, which is laden with chromium, phosphorus and aluminum, and (2) a cocatalyst, (1) being obtained by a method in which (1.1) a catalyst intermediate laden with chromium, phosphorus and aluminum is prepared from a silicate carrier, a selected chromium compound, a selected phosphorus compound and a selected aluminum compound, and then (1.2) the catalyst intermediate is heated in an oxygen-containing gas stream. In this process, the component (1) used is one which is obtained by a method in which, in each case in a specific manner, (1.1) in a first stage, (1.1.1) first a suspension is prepared from (1.1.1.1) a finely divided silicate carrier and (1.1.1.2) an inert organic solvent, (1.1.2) then, (1.1.2.1) in an inert organic solvent, (1.1.2.2) an organic chromium compound is combined with (1.1.2.3) an aluminum trialkyl, (1.1.3) then (1.1.3.1) the suspension resulting from (1.1.1) is combined with (1.1.3.Type: GrantFiled: October 21, 1987Date of Patent: March 21, 1989Assignee: BASF AktiengesellschaftInventors: Rainer Konrad, Guido Funk, Juergen Schmidt-Thuemmes, Rudolf Mueller-Mall, Guenther Schweier
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Patent number: 4728703Abstract: Ethene polymers are prepared by Phillips catalysis using (1) a supported catalyst which is loaded with chromium and titanium and (2) a co-catalyst, (1) having been obtained by preparing (1.1) a chromium- and titanium-loaded catalyst intermediate from (1.1.a) a silicate carrier material, (1.1.b) a selected chromium compound and (1.1.c) a selected titanium compound and then (1.2) heating said catalyst intermediate in an oxygen-containing gas stream, the (1) used having been obtained by, in general terms, (1.1) preparing in the first stage (1.1.1) a suspension from (1.1.1.1) a finely divided silicate carrier material and (1.1.1.2) a liquid alkane, (1.1.2) then (1.1.2.1) combining the suspension resulting from (1.1.1.) with (1.1.2.2.) a finely divided chromium trioxide, (1.1.3) thereupon (1.1.3.1) combining the suspension obtained from (1.1.2) with (1.1.3.2) an alkanol, (1.1.4) thereafter (1.1.4.1) combining the suspension formed in (1.1.3) with (1.1.4.2) a titanium compound of the formula Ti(OR).sub.Type: GrantFiled: March 20, 1987Date of Patent: March 1, 1988Assignee: BASF AktiengesellschaftInventors: Rainer Konrad, Volker Warzelhan, Hans Gropper, Guenther Schweier
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Patent number: 4727124Abstract: Ethane polymers are prepared by Phillips catalysis using (1) a supported catalyst which is laden with chromium, phosphorus and titanium and (2) a cocatalyst, (1) being obtained by a procedure in which (1.1) a catalyst intermediate laden with chromium, phosphorus and titanium is prepared from a silicate carrier, a selected chromium compound, a selected phosphorus compound and a selected titanium compound, and (1.2) the catalyst intermediate is then heated in an oxygen-containing gas stream. In the process, the supported catalyst (1) used is one which is obtained (using specific methods and substances in each case) by a procedure in which (1.1) in a first stage (1.1.1), a suspension is first prepared from (1.1.1.1) a finely divided silicate carrier and (1.1.1.2) an inert organic solvent, (1.1.2) a suspension is then prepared from (1.1.2.1) a finely divided chromium trioxide and (1.1.2.2) an inert organic solvent, (1.1.3) thereafter (1.1.3.1) the suspension resulting from (1.1.2) is combined with (1.1.3.Type: GrantFiled: May 8, 1987Date of Patent: February 23, 1988Assignee: BASF AktiengesellschaftInventors: Rainer Konrad, Rudolf Mueller-Mall, Guenther Schweier