Patents by Inventor Roland Krokoszinski
Roland Krokoszinski 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: 9035110Abstract: The present invention relates to a process for heat integration in the preparation of saturated C3-C20-alcohols, in which a hydrogenation feed comprising at least one C3-C20-aldehyde is hydrogenated in the presence of a hydrogen-comprising gas in a hydrogenation zone and a discharge is taken off from the hydrogenation zone and subjected to distillation in at least one distillation column to give a fraction enriched in saturated C3-C20-alcohols.Type: GrantFiled: March 6, 2013Date of Patent: May 19, 2015Assignee: BASF SEInventors: Roland Krokoszinski, Karl-Heinz Walczuch
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Patent number: 9006495Abstract: The present invention relates to a process for the catalytic aldol condensation of aldehydes, in particular for preparing ?,?-unsaturated aldehydes, in a multiphase reactor.Type: GrantFiled: November 27, 2013Date of Patent: April 14, 2015Assignee: BASF SEInventors: Roland Krokoszinski, Steffen Oehlenschläger, Rainer Papp, Jens Rudolph, Armin Ulonska
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Publication number: 20140155656Abstract: The present invention relates to a process for the catalytic aldol condensation of aldehydes, in particular for preparing ?,?-unsaturated aldehydes, in a multiphase reactor.Type: ApplicationFiled: November 27, 2013Publication date: June 5, 2014Applicant: BASF SEInventors: Roland Krokoszinski, Steffen Oehlenschläger, Rainer Papp, Jens Rudolph, Armin Ulonska
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Patent number: 8680353Abstract: A process for preparing oligomers by continuous oligomerization of butenes is described, wherein a) a feed stream 1) comprising 1-butene and 2-butene in a total concentration of from 10 to 70% by weight and from 10 to 60% by weight of isobutane is reacted until more than 60% by weight of the 1-butene comprised in the feed stream 1 but less than 50% by weight of the 2-butene comprised in feed stream 1 have been converted into oligomers. b) The oligomers obtained in a) are separated off and optionally passed to a further work-up and the remaining residual stream is fed to work-up by distillation. c) Isobutane is separated off by distillation from the residual stream, and d) the isobutane-depleted stream obtained after the work-up by distillation c) is reacted to form oligomers.Type: GrantFiled: November 19, 2012Date of Patent: March 25, 2014Assignee: BASF SEInventors: Sven Crone, Oliver Ryll, Till Blum, Alexander Weck, Rainer Papp, Roland Krokoszinski, Heinrich-Josef Blankertz
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Publication number: 20130237726Abstract: The present invention relates to a process for heat integration in the preparation of saturated C3-C20-alcohols, in which a hydrogenation feed comprising at least one C3-C20-aldehyde is hydrogenated in the presence of a hydrogen-comprising gas in a hydrogenation zone and a discharge is taken off from the hydrogenation zone and subjected to distillation in at least one distillation column to give a fraction enriched in saturated C3-C20-alcohols.Type: ApplicationFiled: March 6, 2013Publication date: September 12, 2013Inventors: Roland Krokoszinski, Karl-Heinz Walczuch
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Publication number: 20130131416Abstract: Process for preparing oligomers by continuous oligomerization of butenes, wherein a) a feed stream comprising 1-butene and 2-butene in a total concentration of from 10 to 70% by weight and from 10 to 60% by weight of isobutane is used (hereinafter referred to as feed stream 1), b) this feed stream 1 is reacted until more than 60% by weight of the 1-butene comprised in the feed stream 1 but less than 50% by weight of the 2-butene comprised in feed stream 1 have been converted into oligomers, c) the oligomers obtained in b) are separated off and optionally passed to a further work-up and the remaining residual stream is fed to work-up by distillation, d) isobutane is separated off by distillation from the residual stream, e) the isobutane-depleted stream obtained after the work-up by distillation d) (hereinafter referred to as feed stream 2) is reacted to form oligomers.Type: ApplicationFiled: November 19, 2012Publication date: May 23, 2013Inventors: Sven CRONE, Oliver RYLL, Till BLUM, Alexander WECK, Rainer PAPP, Roland KROKOSZINSKI, Heinrich-Josef BLANKERTZ
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Patent number: 7943047Abstract: Process for the treatment of wastewater from an aldolization process which is contaminated with water-soluble and/or dispersed organic impurities by means of single-stage or multistage extraction with an organic liquid of the aldolization process wastewater which has been set to a pH of from 0 to 6, in which an organic liquid obtained by stripping of the acidified aldolization process wastewater or of the acidified and extracted aldolization process wastewater, condensation of the stripped compounds and phase separation of the condensate is used as extractant for the extraction of organic impurities from the acidified aldolization process wastewater and wastewater having a lower content of organic impurities than the aldolization process wastewater fed to the extraction is taken off from the stripping apparatus.Type: GrantFiled: September 25, 2006Date of Patent: May 17, 2011Assignee: BASF SEInventors: Siegmar Maassen, Roland Krokoszinski, Detlef Kratz
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Publication number: 20080251458Abstract: Process for the treatment of wastewater from an aldolization process which is contaminated with water-soluble and/or dispersed organic impurities by means of single-stage or multistage extraction with an organic liquid of the aldolization process wastewater which has been set to a pH of from 0 to 6, in which an organic liquid obtained by stripping of the acidified aldolization process wastewater or of the acidified and extracted aldolization process wastewater, condensation of the stripped compounds and phase separation of the condensate is used as extractant for the extraction of organic impurities from the acidified aldolization process wastewater and wastewater having a lower content of organic impurities than the aldolization process wastewater fed to the extraction is taken off from the stripping apparatus.Type: ApplicationFiled: September 25, 2006Publication date: October 16, 2008Applicant: BASF SEInventors: Siegmar Maassen, Roland Krokoszinski, Detlef Kratz
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Patent number: 7208635Abstract: The invention relates to a hydroformylation process in which at least one olefin having from 2 to 6 carbon atoms is reacted continuously with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst in a reaction zone in which a liquid phase is present and a stream S) is taken from the liquid phase, heat is removed from this stream and the stream is subsequently returned to the reaction zone without removal of a material component.Type: GrantFiled: January 16, 2003Date of Patent: April 24, 2007Assignee: BASF AktiengesellschaftInventors: Wolfgang Richter, Rolf Müller, Roland Krokoszinski
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Patent number: 6969777Abstract: Olefins having from 2 to 8 carbon atoms are hydroformylated in a process in which (i) an olefin-containing feed in which a proportion of a saturated hydrocarbon having from 2 to 8 carbon atoms is present and also carbon monoxide and hydrogen are fed into a reaction zone and reacted in the presence of a hydroformylation catalyst, (ii) a stream consisting essentially of unreacted olefin and saturated hydrocarbon is separated off from the output from the reaction zone, (iii) the stream is separated into an olefin-enriched fraction and an olefin-depleted fraction by rectification, and (iv) at least part of the olefin-enriched fraction is recirculated to the reaction zone.Type: GrantFiled: June 27, 2001Date of Patent: November 29, 2005Assignee: BASF AktiengesellschaftInventors: Helmut Walz, Willi Schönmann, Rolf Müller, Roland Krokoszinski
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Patent number: 6914162Abstract: A process for preparing hydroformylation products of olefins having from 2 to 8 carbon atoms comprises a) feeding a hydrocarbon feedstock into a cracking/dehydrogenation zone and subjecting it to thermal and/or catalytic cracking and/or dehydrogenation to give an olefin-containing cracker gas, b) subjecting the cracker gas or fractions thereof to a fractionation to give at least one Ci-olefin-enriched hydrocarbon stream and at least one Ci-olefin-depleted hydrocarbon stream, c) feeding the Ci-olefin-enriched hydrocarbon stream together with carbon monoxide and hydrogen into a hydroformylation zone and reacting it in the presence of a hydroformylation catalyst, d) separating a stream consisting essentially of unreacted Ci-olefin and saturated Ci-hydrocarbon from the output from the hydroformylation zone, e) recirculating at least part of the stream consisting essentially of unreacted Ci-olefin and saturated Ci-hydrocarbon to step b), where i is an integer from to 8.Type: GrantFiled: June 27, 2001Date of Patent: July 5, 2005Assignee: BASF AktiengesellschaftInventors: Wolfgang Richter, Roland Krokoszinski, Rolf Müller, Bernhard Geissler
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Publication number: 20050119509Abstract: The invention relates to a hydroformylation process in which at least one olefin having from 2 to 6 carbon atoms is reacted continuously with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst in a reaction zone in which a liquid phase is present and a stream S) is taken from the liquid phase, heat is removed from this stream and the stream is subsequently returned to the reaction zone without removal of a material component.Type: ApplicationFiled: January 16, 2003Publication date: June 2, 2005Inventors: Wolfgang Richter, Rolf Muller, Roland Krokoszinski
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Patent number: 6864391Abstract: A process for preparing hydroformylation products of propylene and for preparing acrylic acid and/or acrolein comprises a) feeding a propylene-containing feed in which from 2 to 40% by weight of propane is present and also carbon monoxide and hydrogen into a reaction zone and reacting this mixture in the presence of a hydroformylation catalyst to form hydroformylation products of propane, b) separating a stream consisting essentially of unreacted propylene and propane from the output from the reaction zone, and c) subjecting the stream consisting essentially of propylene and propane to a catalytic gas-phase oxidation in the presence of molecular oxygen to form acrylic acid and/or acrolein.Type: GrantFiled: June 27, 2001Date of Patent: March 8, 2005Assignee: BASF AktiengesellschaftInventors: Roland Krokoszinski, Ulrich Hammon, Kevin Todd
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Patent number: 6849769Abstract: Essentially monounsaturated polyalkylenes having from 30 to 700 carbon atoms are continuously hydroformylated by a process in which i) a hydroformylation-active cobalt carbonyl catalyst is prepared from a catalyst precursor dissolved in an aqueous phase in the absence of the polyalkylenes, ii) the polyalkylenes are hydroformylated by means of synthesis gas in the presence of the cobalt carbonyl catalyst in a reaction zone, iii) the cobalt carbonyl catalyst is separated from the output from the reaction zone with at least partial reformation of the catalyst precursor and the catalyst precursor is recirculated to step i).Type: GrantFiled: September 11, 2001Date of Patent: February 1, 2005Assignee: BASF AktiengesellschaftInventors: Michael Röper, Heinrich-Josef Blankertz, Armin Volker Grenacher, Roland Krokoszinski, Willi Schönmann
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Patent number: 6822122Abstract: Disclosed is a method for the hydroformylation of olefins comprising 2 to 8 atoms, whereby a) an inflow containing olefins and a gas mixture containing hydrogen and carbon monoxide are fed into a reaction zone and reacted in the presence of a hydroformylation catalyst, b) the reaction product which is released from the raw hydroformylation product is redirected into the reaction zone during the extraction of a gaseous recovery flow. The inventive method is characterised in that c) the recovery flow is brought into intimate contact with a wash liquid in order to eliminate the unreacted olefins contained therein, the wash liquid being a vented hydroformylation product, and the olefin-charged wash liquid and the raw hydroformylation product are redirected for regeneration. Said inventive method enables unreacted olefins to be reclaimed to a large extent from the recovery flow.Type: GrantFiled: December 16, 2002Date of Patent: November 23, 2004Assignee: BASF AktiengesellschaftInventors: Wolfgang Richter, Roland Krokoszinski, Rolf Müller, Michael McAtee
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Patent number: 6727391Abstract: A liquid output from a continuous hydroformylation, which comprises essentially aldehydes, high-boiling by-products, a homogeneously dissolved hydroformylation catalyst, unreacted olefins, low-boiling by-products and dissolved synthesis gas, is worked up by a process in which a) the liquid hydroformylation output is depressurized in a first depressurization stage to a pressure which is from 2 to 20 bar below the reactor pressure, resulting in separation into a liquid phase and a gas phase, and b) the liquid phase obtained in the first depressurization stage is depressurized in a second depressurization stage to a pressure which is lower than the pressure of the first depressurization stage, resulting in separation into a liquid phase comprising essentially high-boiling by-products of the hydroformylation, the homogeneously dissolved hydroformylation catalyst and small amounts of hydroformylation product and unreacted olefin and a gas phase comprising essentially the major part of the hydroformylation producType: GrantFiled: August 8, 2002Date of Patent: April 27, 2004Assignee: BASF AktiengesellschaftInventors: Karl-Heinz Walczuch, Rolf Müller, Roland Krokoszinski, Bernhard Geissler
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Publication number: 20040024259Abstract: A process for preparing hydroformylation products of olefins having from 2 to 8 carbon atoms comprisesType: ApplicationFiled: December 26, 2002Publication date: February 5, 2004Inventors: Wolfgang Richter, Roland Krokoszinski, Rolf Muller, Bernhard Geissler
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Publication number: 20040015011Abstract: A process for preparing hydroformylation products of propylene and for preparing acrylic acid and/or acrolein comprises a) feeding a propylene-containing feed in which from 2 to 40% by weight of propane is present and also carbon monoxide and hydrogen into a reaction zone and reacting this mixture in the presence of a hydroformylation catalyst to form hydroformylation products of propane, b) separating a stream consisting essentially of unreacted propylene and propane from the output from the reaction zone, and c) subjecting the stream consisting essentially of propylene and propane to a catalytic gas-phase oxidation in the presence of molecular oxygen to form acrylic acid and/or acrolein.Type: ApplicationFiled: December 26, 2002Publication date: January 22, 2004Inventors: Roland Krokoszinski, UIrich Hammon, Kevin Todd
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Publication number: 20040015024Abstract: Essentially monounsaturated polyalkylenes having from 30 to 700 carbon atoms are continuously hydroformylated by a process in which i) a hydroformylation-active cobalt carbonyl catalyst is prepared from a catalyst precursor dissolved in an aqueous phase in the absence of the polyalkylenes, ii) the polyalkylenes are hydroformylated by means of synthesis gas in the presence of the cobalt carbonyl catalyst in a reaction zone, iii) the cobalt carbonyl catalyst is separated from the output from the reaction zone with at least partial reformation of the catalyst precursor and the catalyst precursor is recirculated to step i).Type: ApplicationFiled: March 5, 2003Publication date: January 22, 2004Inventors: Michael Roper, Heinrich-Josef Blankertz, Armin Volker Grenacher, Roland Krokoszinski, Willi Schonmann
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Publication number: 20030176743Abstract: Olefins having from 2 to 8 carbon atoms are hydroformylated in a process in which (i) an olefin-containing feed in which a proportion of a saturated hydrocarbon having from 2 to 8 carbon atoms is present and also carbon monoxide and hydrogen are fed into a reaction zone and reacted in the presence of a hydroformylation catalyst, (ii) a stream consisting essentially of unreacted olefin and saturated hydrocarbon is separated off from the output from the reaction zone, (iii) the stream is separated into an olefin-enriched fraction and an olefin-depleted fraction by rectification, and (iv) at least part of the olefin-enriched fraction is recirculated to the reaction zone.Type: ApplicationFiled: December 26, 2002Publication date: September 18, 2003Inventors: Helmut Walz, Willi Schnmann, Rolf Mller, Roland Krokoszinski