Patents by Inventor Volker Zellmer
Volker Zellmer 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: 10301427Abstract: Described are a process for producing hydrosilylable polyoxyalkylene ethers, comprising the steps of (1) alkoxylation of at least one terminally unsaturated alcohol with alkylene oxides to afford a polyoxyalkylene ether, (2) etherification of the polyoxyalkylene ether from step (1) and (3) neutralization of the product from step (2) under buffered conditions, and hydrosilylable polyoxyalkylene ether mixtures.Type: GrantFiled: January 5, 2018Date of Patent: May 28, 2019Assignee: Evonik Degussa GmbHInventors: Matthias Lobert, Volker Zellmer, Anja Brösgen, Thomas Reibold
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Publication number: 20190106369Abstract: A method of processing of base-catalysed alkoxylation products using sulphonic acid-containing ion exchangers is described, comprising providing a mixture comprising the alkali-catalysed alkoxylation product to be processed, alcohol having 1 to 4 carbon atoms and water, treating this mixture with a sulphonic acid-containing cation exchanger at >40° C. and removal of the alkoxylation product from the mixture thus treated.Type: ApplicationFiled: March 6, 2017Publication date: April 11, 2019Applicant: Evonik Degussa GmbHInventors: Frank Schubert, Wilfried Knott, Andrea Villa, Volker Zellmer, Gerrit Wienhoefer
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Publication number: 20180230268Abstract: Described are a process for producing hydrosilylable polyoxyalkylene ethers, comprising the steps of (1) alkoxylation of at least one terminally unsaturated alcohol with alkylene oxides to afford a polyoxyalkylene ether, (2) etherification of the polyoxyalkylene ether from step (1) and (3) neutralization of the product from step (2) under buffered conditions, and hydrosilylable polyoxyalkylene ether mixtures.Type: ApplicationFiled: January 5, 2018Publication date: August 16, 2018Inventors: Matthias Lobert, Volker Zellmer, Anja Brösgen, Thomas Reibold
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Patent number: 9334354Abstract: The invention relates to alkoxylation products, their preparation, compositions comprising the alkoxylation products of the invention, and the use thereof as or for producing adhesives and sealants.Type: GrantFiled: July 16, 2014Date of Patent: May 10, 2016Assignee: Evonik DeGussa GMBHInventors: Michael Ferenz, Matthias Lobert, Frank Schubert, Anke Lewin, Volker Zellmer, Wilfried Knott, Melanie Roessing
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Patent number: 9035011Abstract: Alkoxylation products, their preparation, compositions comprising these alkoxylation products, and the use thereof as or for producing adhesives and sealants.Type: GrantFiled: March 11, 2013Date of Patent: May 19, 2015Assignee: Evonik Goldschmidt GmbHInventors: Michael Ferenz, Bastian Matthias Brugger, Matthias Lobert, Volker Zellmer, Frank Schubert, Wilfried Knott, Melanie Roessing
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Publication number: 20150057369Abstract: The invention relates to alkoxylation products, their preparation, compositions comprising the alkoxylation products of the invention, and the use thereof as or for producing adhesives and sealants.Type: ApplicationFiled: July 16, 2014Publication date: February 26, 2015Inventors: Michael Ferenz, Matthias Lobert, Frank Schubert, Anke Lewin, Volker Zellmer, Wilfried Knott, Melanie Roessing, Stephan Roessing
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Publication number: 20130237616Abstract: Alkoxylation products, their preparation, compositions comprising these alkoxylation products, and the use thereof as or for producing adhesives and sealants.Type: ApplicationFiled: March 11, 2013Publication date: September 12, 2013Applicant: Evonik Goldschmidt GmbHInventors: Michael FERENZ, Bastian Matthias Brugger, Matthias Lobert, Volker Zellmer, Frank Schubert, Wilfried Knott, Melanie Roessing
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Patent number: 8058388Abstract: The invention relates to a process for preparing polyethers of the formula (I) R1—(CHR2CHR3—O)n—H??(I) where n=1 to 12 000, R1=a radical comprising at least one carbon atom and R2 and R3 are each independently H or a hydrocarbon radical, where the units designated with the index n may be the same or different (the R2 and R3 radicals in the different units n may thus be the same or different), by alkoxylating a starter compound which comprises the R1 radical in the presence of a double metal cyanide catalyst (DMC catalyst) in a loop reactor, which is characterized in that the alkoxylation is performed in a loop reactor which has an ejector mixing nozzle, in which all substances involved in the reaction or assistants can be added to the circulated reaction mixture, an alkylene oxide or a plurality of different alkylene oxides being metered into the reaction mixture via the ejector mixing nozzle at the same time (random addition) or at different times (block addition).Type: GrantFiled: November 25, 2008Date of Patent: November 15, 2011Assignee: Evonik Goldschmidt GmbHInventors: Andreas Sellmann, Irina Neisius-Sellmann, legal representative, Volker Zellmer
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Publication number: 20090292084Abstract: The invention relates to a process for preparing polyethers of the formula (I) R1—(CHR2CHR3—O)n—H??(I) where n=1 to 12 000, R1=a radical comprising at least one carbon atom and R2 and R3 are each independently H or a hydrocarbon radical, where the units designated with the index n may be the same or different (the R2 and R3 radicals in the different units n may thus be the same or different), by alkoxylating a starter compound which comprises the R1 radical in the presence of a double metal cyanide catalyst (DMC catalyst) in a loop reactor, which is characterized in that the alkoxylation is performed in a loop reactor which has an ejector mixing nozzle, in which all substances involved in the reaction or assistants can be added to the circulated reaction mixture, an alkylene oxide or a plurality of different alkylene oxides being metered into the reaction mixture via the ejector mixing nozzle at the same time (random addition) or at different times (block addition).Type: ApplicationFiled: November 25, 2008Publication date: November 26, 2009Applicant: Evonik Goldschmidt GmbHInventors: Andreas Sellmann, Volker Zellmer, Irina Neisius-Sellmann
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Patent number: 7312364Abstract: The invention relates to a process for simultaneously performing two chemically successive reactions in a loop reactor, specifically reaction I) an optionally catalyzed equilibrium reaction between high-boiling liquid reactants, in which essentially one high boiler is formed as an intermediate and at least one low boiler as a by-product, and reaction II) a substantially diffusion-controlled reaction in which the liquid intermediate is reacted with at least one gaseous reactant to give the end product, wherein reactions (I) and (II), optionally after a start phase, are allowed to proceed simultaneously in the same apparatus, specifically loop reactor, and the loop reactor has a connectable gas-liquid circulation system coupled via an ejector mixing nozzle, in which circulated liquid phase is mixed in the ejector mixing nozzle with newly supplied gaseous reactant of reaction (II) (6) and/or gaseous reactant of reaction (II) aspirated by means of the ejector from the reactor via a connectable condenser (5), andType: GrantFiled: January 6, 2006Date of Patent: December 25, 2007Assignee: Goldschmidt GmbHInventors: Peter Cramers, Gerhard Kettenbach, Andreas Sellmann, Volker Zellmer
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Publication number: 20060155152Abstract: The invention relates to a process for simultaneously performing two chemically successive reactions in a loop reactor, specifically reaction I) an optionally catalyzed equilibrium reaction between high-boiling liquid reactants, in which essentially one high boiler is formed as an intermediate and at least one low boiler as a by-product, and reaction II) a substantially diffusion-controlled reaction in which the liquid intermediate is reacted with at least one gaseous reactant to give the end product, wherein reactions (I) and (II), optionally after a start phase, are allowed to proceed simultaneously in the same apparatus, specifically loop reactor, and the loop reactor has a connectable gas-liquid circulation system coupled via an ejector mixing nozzle, in which circulated liquid phase is mixed in the ejector mixing nozzle with newly supplied gaseous reactant of reaction (II) (6) and/or gaseous reactant of reaction (II) aspirated by means of the ejector from the reactor via a connectable condenser (5), andType: ApplicationFiled: January 6, 2006Publication date: July 13, 2006Inventors: Peter Cramers, Gerhard Kettenbach, Andreas Sellmann, Volker Zellmer
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Patent number: 6194475Abstract: The invention relates to the use of metal salts of ricinoleic acid or solutions thereof in water or in organic solvents in producing polyurethane foams.Type: GrantFiled: December 16, 1999Date of Patent: February 27, 2001Assignee: Goldschmidt AGInventors: Tammo Boinowitz, Georg Burkhart, Ralf Hoffmann, Felix Müller, Hans-Heinrich Schlöns, Andreas Weier, Volker Zellmer, Rainer Ziegler
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Patent number: 5633292Abstract: The invention relates to a method for the production of high resilience polyurethane foams by reacting a mixture of highly reactive polyols, which usually have an average molecular weight of between about 4800 and 6500 g/mole and at least 70% primary hydroxyl groups and optionally contain fillers, polyfunctional isocyanates, amine activators, cross-linking agents, tin catalysts, blowing agents and stabilizers, compounds of the general formula ##STR1## being used as stabilizers, in which R.sup.1 is the same or different in the average molecule and represents a methyl group or a group of the general formula --CH.sub.2 --CH.sub.2 --(CH.sub.2).sub.a --C.sub.6 H.sub.3 (R.sup.2).sub.2 (a=0 or 1; R.sup.2 =--O--CH.sub.3), with the proviso that at least one R.sup.1 group is a group having the formula --CH.sub.2 --CH.sub.2 --(CH.sub.2)a--C.sub.6 H.sub.3 (R.sup.2).sub.2n has an average numerical value of 2 to 11,m has an average numerical value of 1 to 6,with the proviso that the quotient p=(n+m+2)/m is 1.66 to 12.Type: GrantFiled: December 7, 1995Date of Patent: May 27, 1997Assignee: Th. Goldschmidt AG.Inventors: Anette Brune, Georg Burkhart, Volker Zellmer
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Patent number: 5565194Abstract: The invention relates to polysiloxanes with 1) at least two polyether groups A and B, polyoxyalkylene group, with an average molecular weight of 600 to 5,500, consisting of 20 to 100% by weight of oxyethylene units and of 80 to 0% by weight of oxypropylene units and the polyoxyalkylene group B, with an average molecular weight of 700 to 5,000, consisting of 0 to <20% by weight of oxyethylene units and of 100 to 80% by weight of oxypropylene units, and with 2) hydrocarbon groups with 6 to 30 carbon atoms, linked to silicon. The invention further relates to the synthesis of these polysiloxanes and their use as additives for hair cosmetics, particularly as additives for hair shampoos to improve the handle and the combability of the hair.Type: GrantFiled: November 15, 1995Date of Patent: October 15, 1996Assignee: TH. Goldschmidt AG.Inventors: Georg Burkhart, Rolf-Dieter Langenhagen, Andreas Weir, Volker Zellmer
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Patent number: 5480916Abstract: High resilience polyurethane foams are produced by reacting a mixture of highly reactive polyols having a weight average molecular weight between about 4800 and 6500 g/mole and containing at least 70% primary hydroxyl groups and optionally fillers, polyfunctional isocyanates, amine activators, cross-linking agents, tin catalysts, blowing agents and stabilizers. The inventive stabilizers can be used universally in high resilience slabstock foam systems as well as in high resilience molded foam systems and in formulations based on pure TDI, TDI/MDI mixtures as well as on pure MDI in combination with appropriate polyols.Type: GrantFiled: April 28, 1995Date of Patent: January 2, 1996Assignee: Th. Goldschmidt AGInventors: Anette Brune-Fischer, Georg Burkhart, Bernd-Jurgen Klietsch, Volker Zellmer
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Patent number: 5357018Abstract: Polysiloxane-polyoxyaikylene block copolymers, which are intended for the production of polyurethane foams, are prepared. The foams obtained have an improved, finer cell structure and the collapse of the foams is reduced. It is essential for the invention that a mixture of polyoxyalkylene groups is present in the polysiloxane-polyoxyalkylene block copolymers. Further particulars are laid down for selecting the different polyoxyalkylene groups with regard to the respective molecular weights and the ratio of polyoxyalkylene groups to one another.Type: GrantFiled: December 29, 1993Date of Patent: October 18, 1994Assignee: Th. Goldschmidt AGInventors: Georg Burkhart, Rolf-Dieter Langenhagen, Andreas Weier, Volker Zellmer
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Patent number: 5321051Abstract: Polysiloxane-polyoxyalkylene block copolymers, which are intended for the production of polyurethane foams, are prepared. The foams obtained have an improved, finer cell structure and the collapse of the foams is reduced. It is essential for the invention that a mixture of polyoxyalkylene groups is present in the polysiloxane-polyoxyalkylene block copolymers. Further particulars are laid down for selecting the different polyoxyalkylene groups with regard to the respective molecular weights and the ratio of polyoxyalkylene groups to one another.Type: GrantFiled: October 29, 1993Date of Patent: June 14, 1994Assignee: Th. Goldschmidt AGInventors: Georg Burkhart, Rolf-Dieter Langenhagen, Andreas Weier, Volker Zellmer
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Patent number: 5306737Abstract: Polysiloxane-polyoxyalkylene block copolymers having different polyoxyalkylene blocks in the average molecule are prepared. The mixture of the polyoxyalkylene blocks consists of at least one polyoxyalkylene group A and at least one polyoxyalkylene group B and/or at least one polyoxyalkylene group C, each polyoxyalkylene group A having an average molecular weight of 600 to 5,500 and consisting of 20 to 90% by weight of oxyethylene units and 80 to 10% by weight of oxypropylene units, polyoxyalkylene group B having an average molecular weight of 500 to 5,000 and consisting of 2 to 19% by weight of oxyethylene units and 98 to 81% by weight of oxypropylene units, polyoxyalkylene group C having an average molecular weight of 1,500 to 4,500 and consisting of oxypropylene units. Up to 20% by weight of the oxypropylene units is replaceable by oxybutylene units and the molar ratio of polyoxyalkylene groups A to the sum of the polyoxyalkylene groups B and C is 1:4 to 4:1.Type: GrantFiled: August 26, 1993Date of Patent: April 26, 1994Assignee: Th. Goldschmidt AGInventors: Georg Burkhart, Rolf-Dieter Langenhagen, Andreas Weier, Volker Zellmer
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Patent number: 5183830Abstract: A method for the preparation of highly elastic foams of reduced compression hardness and having urethane groups is disclosed, in which the reaction of the polyurethane-forming materials is carried in the presence of 0.01 to 5% by weight, based on the polyol, of a compound, which has at least one polyoxyalkylene group and at least one anionic group in the molecule. The use of fluorocarbons to decrease the compression hardness can reduced appreciably by the use of this compound.Type: GrantFiled: April 15, 1991Date of Patent: February 2, 1993Assignee: Th. Goldschmidt AGInventors: Volker Mohring, Volker Zellmer
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Patent number: 5132333Abstract: A method for the preparation of flexible foams containing urethane groups and having a reduced hardness is disclosed. Polyethers, having at least two hydroxyl groups and a molecular weight of 400 to 12,000 are reacted with polyisocyanates in the presence of catalysts and water and, optionally, in the presence of emulsifiers, stabilizers, cross linking agents, blowing agents and conventional auxiliaries and additives. The method is carried out in the presence of 0.01 to 1.0 parts by weight, based on 100 parts by weight of the polyol, of the alkali salt or the alkaline earth metal salt of a hydroxycarboxylic acid. The method enables the use of chlorofluorocarbons to be omitted largely or completely as physical blowing agents.Type: GrantFiled: August 15, 1991Date of Patent: July 21, 1992Assignee: Th. Goldschmidt AGInventors: Georg Burkhart, Hans-Heinrich Schlons, Volker Zellmer