Patents by Inventor Manfred Kreczinski
Manfred Kreczinski 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: 10882768Abstract: Contaminated wastewater from the preparation of isophorone, isophoronenitrile and isophoronediamine is treated by A) 1. treating the wastewater from the preparation of isophoronenitrile from the reaction of isophorone with hydrogen cyanide by alkaline hydrolysis of isophoronenitrile to isophorone, and the salts of hydrogen cyanide within a pH range of 12.0 to 13.7 and at temperatures of 60 to 200° C. and 2. processing the wastewater from A) 1. by an oxidation, or B) treating the wastewater from the preparation of isophoronenitrile from the reaction of isophorone with hydrogen cyanide by an oxidation, or C) processing the wastewater from A) 1. and the wastewater from the preparation of isophorone and/or the wastewater from the preparation of isophoronediamine by an oxidation.Type: GrantFiled: September 6, 2018Date of Patent: January 5, 2021Assignee: Evonik Operations GmbHInventors: Manfred Kreczinski, Robert Jansen, Matthias Woyciechowski
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Patent number: 10669293Abstract: The present invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D), A) alkoxysilanoalkylamine is reacted with urea in the presence of an alcohol, optionally in the presence of at least one catalyst, to give alkoxysilanoalkylurethane, B) simultaneously or successively, if used, the catalyst is removed and/or deactivated, and low boilers, medium boilers and/or high boilers are removed, C) purified alkoxysilanoalkylurethane is thermally cleaved to release isocyanate containing alkoxysilane groups and by-product, leaving bottoms material, and D) isocyanate containing alkoxysilane groups and by-product are separated from one another and from bottoms material and collected, in which, in step C), i) the bottoms material is wholly or partly discharged from the cleavage apparatus, ii) subjected to thermal treatment and/or purification and/or an aftertreatment in the presence of alcohol and iii) the material removed, after thermal treatmentType: GrantFiled: March 18, 2019Date of Patent: June 2, 2020Assignee: Evonik Operations GmbHInventors: Manfred Kreczinski, Stephan Kohlstruk, Dirk Hoppe, Emmanouil Spyrou
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Patent number: 10633401Abstract: The invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D), A) alkoxysilano(cyclo)alkylamine is reacted with dialkyl carbonate in the presence of a basic catalyst to give alkoxysilano(cyclo)alkylurethane, B) simultaneously or successively, the catalyst is deactivated, and low boilers, solids, salt burdens and/or high boilers are removed, C) alkoxysilano(cyclo)alkylurethane obtained after B) is thermally cleaved to release isocyanate containing alkoxysilane groups and by-product, leaving bottoms material, and D) isocyanate containing alkoxysilane groups and by-product are separated from one another and from bottoms material and collected, wherein the process regime at least of steps C) to D) is continuous.Type: GrantFiled: March 15, 2019Date of Patent: April 28, 2020Assignee: Evonik Operations GmbHInventors: Manfred Kreczinski, Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe
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Patent number: 10626131Abstract: The invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D), A) alkoxysilano(cyclo)alkylamine is reacted with dialkyl carbonate in the presence of a basic catalyst to give alkoxysilano(cyclo)alkylurethane, B) simultaneously or successively, the catalyst is removed and/or deactivated, and low boilers, solids, salt burdens and/or high boilers are removed, C) alkoxysilano(cyclo)alkylurethane obtained after B) is thermally cleaved to release isocyanate containing alkoxysilane groups and by-product, leaving bottoms material, and D) isocyanate containing alkoxysilane groups and by-product are separated from one another and from bottoms material and collected, wherein the basic catalyst is a guanidine base.Type: GrantFiled: March 15, 2019Date of Patent: April 21, 2020Assignee: Evonik Operations GmbHInventors: Manfred Kreczinski, Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe
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Patent number: 10611782Abstract: The invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D), A) haloalkylalkoxysilane is reacted with metal cyanate and alcohol to give alkoxysilanoalkylurethane, B) alkoxysilanoalkylurethane is freed of low boilers, solids, salt burdens and/or high boilers and optionally purified, C) alkoxysilanoalkylurethane obtained after B) is thermally cleaved to release isocyanate containing alkoxysilane groups and by-product, leaving bottoms material, and D) isocyanate containing alkoxysilane groups and by-product are separated from one another and from cleavage bottoms material and collected, wherein the process regime at least of steps C) to D) is continuous.Type: GrantFiled: March 18, 2019Date of Patent: April 7, 2020Assignee: Evonik Operations GmbHInventors: Manfred Kreczinski, Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe
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Patent number: 10538684Abstract: A coating composition that includes an allophanate-containing compound can offer improved scratch resistance. The coating composition includes A) at least one allophanate-containing compound having the formula (1): wherein R, R1-R6 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system, and m and n are each independently 0-2, B) a binder, C) optionally, an aliphatic or cycloaliphatic polyisocyanate having an NCO functionality of at least 2, D) optionally, a catalyst, E) optionally, an auxiliary and/or additive, and, F) optionally, a solvent.Type: GrantFiled: October 7, 2016Date of Patent: January 21, 2020Assignee: Evonik Operations GmbHInventors: Emmanouil Spyrou, Tobias Unkelhaeusser, Sabine Naumann, Manfred Kreczinski, Holger Loesch, Alina Meier, Uwe Korek
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Publication number: 20190300549Abstract: The invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D), A) alkoxysilano(cyclo)alkylamine is reacted with dialkyl carbonate in the presence of a basic catalyst to give alkoxysilano(cyclo)alkylurethane, B) simultaneously or successively, the catalyst is removed and/or deactivated, and low boilers, solids, salt burdens and/or high boilers are removed, C) alkoxysilano(cyclo)alkylurethane obtained after B) is thermally cleaved to release isocyanate containing alkoxysilane groups and by-product, leaving bottoms material, and D) isocyanate containing alkoxysilane groups and by-product are separated from one another and from bottoms material and collected, wherein the basic catalyst is a guanidine base.Type: ApplicationFiled: March 15, 2019Publication date: October 3, 2019Applicant: Evonik Degussa GmbHInventors: Manfred Kreczinski, Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe
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Publication number: 20190300551Abstract: The invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D), A) haloalkylalkoxysilane is reacted with metal cyanate and alcohol to give alkoxysilanoalkylurethane, B) alkoxysilanoalkylurethane is freed of low boilers, solids, salt burdens and/or high boilers and optionally purified, C) alkoxysilanoalkylurethane obtained after B) is thermally cleaved to release isocyanate containing alkoxysilane groups and by-product, leaving bottoms material, and D) isocyanate containing alkoxysilane groups and by-product are separated from one another and from cleavage bottoms material and collected, wherein the process regime at least of steps C) to D) is continuous.Type: ApplicationFiled: March 18, 2019Publication date: October 3, 2019Applicant: Evonik Degussa GmbHInventors: Manfred Kreczinski, Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe
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Publication number: 20190300553Abstract: The present invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D), A) alkoxysilanoalkylamine is reacted with urea in the presence of an alcohol, optionally in the presence of at least one catalyst, to give alkoxysilanoalkylurethane, B) simultaneously or successively, if used, the catalyst is removed and/or deactivated, and low boilers, medium boilers and/or high boilers are removed, C) purified alkoxysilanoalkylurethane is thermally cleaved to release isocyanate containing alkoxysilane groups and by-product, leaving bottoms material, and D) isocyanate containing alkoxysilane groups and by-product are separated from one another and from bottoms material and collected, in which, in step C), i) the bottoms material is wholly or partly discharged from the cleavage apparatus, ii) subjected to thermal treatment and/or purification and/or an aftertreatment in the presence of alcohol and iii) the material removed, after thermal treatmentType: ApplicationFiled: March 18, 2019Publication date: October 3, 2019Applicant: Evonik Degussa GmbHInventors: Manfred Kreczinski, Stephan Kohlstruk, Dirk Hoppe, Emmanouil Spyrou
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Publication number: 20190300550Abstract: The invention relates to a process for preparing isocyanate containing alkoxysilane groups, in which, in the sequence of steps A) to D), A) alkoxysilano(cyclo)alkylamine is reacted with dialkyl carbonate in the presence of a basic catalyst to give alkoxysilano(cyclo)alkylurethane, B) simultaneously or successively, the catalyst is deactivated, and low boilers, solids, salt burdens and/or high boilers are removed, C) alkoxysilano(cyclo)alkylurethane obtained after B) is thermally cleaved to release isocyanate containing alkoxysilane groups and by-product, leaving bottoms material, and D) isocyanate containing alkoxysilane groups and by-product are separated from one another and from bottoms material and collected, pa wherein the process regime at least of steps C) to D) is continuous.Type: ApplicationFiled: March 15, 2019Publication date: October 3, 2019Applicant: Evonik Degussa GmbHInventors: Manfred Kreczinski, Stephan Kohlstruk, Emmanouil Spyrou, Dirk Hoppe
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Patent number: 10351579Abstract: A monoallophanate can be used in paint or adhesive compositions. The monoallophanate has the formula 1: where R, R1-R6 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system, and m and n are each independently 0-2.Type: GrantFiled: October 11, 2016Date of Patent: July 16, 2019Assignee: Evonik Degussa GmbHInventors: Emmanouil Spyrou, Manfred Kreczinski, Tobias Unkelhaeusser, Sabine Naumann, Holger Loesch, Marion Ewald, Thomas Weihrauch
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Publication number: 20190002316Abstract: Contaminated wastewater from the preparation of isophorone, isophoronenitrile and isophoronediamine is treated by A) 1. treating the wastewater from the preparation of isophoronenitrile from the reaction of isophorone with hydrogen cyanide by alkaline hydrolysis of isophoronenitrile to isophorone, and the salts of hydrogen cyanide within a pH range of 12.0 to 13.7 and at temperatures of 60 to 200° C. and 2. processing the wastewater from A) 1. by an oxidation, or B) treating the wastewater from the preparation of isophoronenitrile from the reaction of isophorone with hydrogen cyanide by an oxidation, or C) processing the wastewater from A) 1. and the wastewater from the preparation of isophorone and/or the wastewater from the preparation of isophoronediamine by an oxidation.Type: ApplicationFiled: September 6, 2018Publication date: January 3, 2019Applicant: Evonik Degussa GmbHInventors: Manfred Kreczinski, Robert Jansen, Matthias Woyciechowski
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Patent number: 10144662Abstract: Contaminated wastewater from the preparation of isophorone, isophoronenitrile and isophoronediamine is treated by A) 1. treating the wastewater from the preparation of isophoronenitrile from the reaction of isophorone with hydrogen cyanide by alkaline hydrolysis of isophoronenitrile to isophorone, and the salts of hydrogen cyanide within a pH range of 12.0 to 13.7 and at temperatures of 60 to 200° C., and 2. processing the wastewater from A) 1. by an oxidation, or B) treating the wastewater from the preparation of isophoronenitrile from the reaction of isophorone with hydrogen cyanide by an oxidation, or C) processing the wastewater from A) 1. and the wastewater from the preparation of isophorone and/or the wastewater from the preparation of isophoronediamine by an oxidation.Type: GrantFiled: November 24, 2015Date of Patent: December 4, 2018Assignee: Evonik Degussa GmbHInventors: Manfred Kreczinski, Robert Jansen, Matthias Woyciechowski
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Publication number: 20180327432Abstract: A monoallophanate can be used in paint or adhesive compositions. The monoallophanate has the formula 1: where R, R1-R6 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system, and m and n are each independently 0-2.Type: ApplicationFiled: October 11, 2016Publication date: November 15, 2018Applicant: EVONIK DEGUSSA GMBHInventors: Emmanouil Spyrou, Manfred Kreczinski, Tobias Unkelhaeusser, Sabine Naumann, Holger Loesch, Marion Ewald, Thomas Weihrauch
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Publication number: 20180312713Abstract: A coating composition that includes an allophanate-containing compound can offer improved scratch resistance. The coating composition includes A) at least one allophanate-containing compound having the formula (1): wherein R, R1-R6 are each independently identical or different hydrocarbyl radicals having 1-8 carbon atoms, which may be branched or cyclic, or else may be integrated together to form a cyclic system, and m and n are each independently 0-2, B) a binder, C) optionally, an aliphatic or cycloaliphatic polyisocyanate having an NCO functionality of at least 2, D) optionally, a catalyst, E) optionally, an auxiliary and/or additive, and, F) optionally, a solvent.Type: ApplicationFiled: October 7, 2016Publication date: November 1, 2018Applicant: Evonik Degussa GmbHInventors: Emmanouil Spyrou, Tobias Unkelhaeusser, Sabine Naumann, Manfred Kreczinski, Holger Loesch, Alina Meier, Uwe Korek
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Patent number: 9994472Abstract: Treatment of the wastewater from isophorone production comprising neutralization, filtration and a downstream chemical oxidation process and subsequent reduction. The invention relates to treatment of the wastewater from isophorone (IP) production comprising neutralization, filtration and a downstream chemical oxidation process and subsequent reduction.Type: GrantFiled: October 18, 2016Date of Patent: June 12, 2018Assignee: Evonik Degussa GmbHInventors: Yue Chang, Manfred Kreczinski, Martin Maier, Matthias Woyciechowski
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Publication number: 20170166464Abstract: The invention relates to the treatment of the wastewater from isophorone production (IP) by high-pressure wet oxidation.Type: ApplicationFiled: December 9, 2016Publication date: June 15, 2017Applicant: Evonik Degussa GmbHInventors: Yue CHANG, Manfred KRECZINSKI, Martin MAIER, Matthias WOYCIECHOWSKI
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Publication number: 20170107133Abstract: Treatment of the wastewater from isophorone production comprising neutralization, filtration and a downstream chemical oxidation process and subsequent reduction. The invention relates to treatment of the wastewater from isophorone (IP) production comprising neutralization, filtration and a downstream chemical oxidation process and subsequent reduction.Type: ApplicationFiled: October 18, 2016Publication date: April 20, 2017Applicant: Evonik Degussa GmbHInventors: Yue CHANG, Manfred KRECZINSKI, Martin MAIER, Matthias WOYCIECHOWSKI
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Patent number: 9593135Abstract: The present invention relates to a composition comprising (A) an isocyanate of formula (I) OCN-A-SiR1R2R3 (I), wherein A is straight-chain, branched, substituted and/or unsubstituted aliphatic hydrocarbyl of 1 to 12 carbon atoms or substituted or unsubstituted cycloaliphatic hydrocarbyl of 4 to 18 carbon atoms, wherein R1 is selected from the group comprising —O—Ralk, wherein R2 and R3 are each independently selected from the group of substituents comprising —Ralk and —O—Ralk, and wherein —Ralk is hydrocarbyl of 1 to 6 carbon atoms, and B) a Bronstedt or Lewis acid or a compound which releases a Bronstedt or Lewis acid at room temperature; and also to a process for producing a stabilized alkoxysilane-containing isocyanate comprising the step of adding a Lewis or Bronstedt acid or a compound which releases a Bronstedt or Lewis acid at room temperature to an alkoxysilane-containing isocyanate.Type: GrantFiled: September 25, 2013Date of Patent: March 14, 2017Assignee: EVONIK DEGUSSA GmbHInventors: Emmanouil Spyrou, Manfred Kreczinski, Holger Loesch, Andrea Thesing, Lars Hellkuhl
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Publication number: 20160152496Abstract: Contaminated wastewater from the preparation of isophorone, isophoronenitrile and isophoronediamine is treated by A) 1. treating the wastewater from the preparation of isophoronenitrile from the reaction of isophorone with hydrogen cyanide by alkaline hydrolysis of isophoronenitrile to isophorone, and the salts of hydrogen cyanide within a pH range of 12.0 to 13.7 and at temperatures of 60 to 200° C., and 2. processing the wastewater from A) 1. by an oxidation, or B) treating the wastewater from the preparation of isophoronenitrile from the reaction of isophorone with hydrogen cyanide by an oxidation, or C) processing the wastewater from A) 1. and the wastewater from the preparation of isophorone and/or the wastewater from the preparation of isophoronediamine by an oxidation.Type: ApplicationFiled: November 24, 2015Publication date: June 2, 2016Applicant: Evonik Degussa GmbHInventors: Manfred KRECZINSKI, Robert JANSEN, Matthias WOYCIECHOWSKI