Patents by Inventor Wolfgang Klesse
Wolfgang Klesse 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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Publication number: 20100280205Abstract: Process for preparing (meth)acrylates of the formula (I) CH2?C(R1)—CO—O—R2 ??(I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2?C(R1)—CO—OR3 ??(II) with an alcohol of the formula (III) HO—R2 ??(III) in the presence of an amount of a suitable catalyst which catalyses the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.Type: ApplicationFiled: September 29, 2008Publication date: November 4, 2010Applicant: Evonik Roehm GmbHInventors: Joachim Knebel, Ralf Merbach, Guido Protzmann, Klaus Gottmann, John Hirsh, Gerold Schmitt, Dieter Tessmer, Wilhelm Karnbrock, Wolfgang Klesse, Volker Kerscher
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Publication number: 20100210784Abstract: Emulsion polymer which can be obtained by polymerization of a mixture. The emulsion polymer of the invention makes it possible to provide two-component or multicomponent systems which cure by means of a redox initiator system and have a controllable pot life, in which use is preferably made of two monomers which swell the emulsion polymer to different extents and of which that having a sufficient swelling action is stored separately from the emulsion polymer, preferably together with a peroxide in an organic solvent, until the system is used. The system is used in adhesives, pourable resins, floor coatings and other reactive coatings, sealing compositions, impregnation compositions, embedding compositions, compositions for producing artificial marble and other artificial stones, compositions for reactive pegs, dental compositions, porous plastic moulds for ceramic objects or in unsaturated polyester resins and vinyl ester resins.Type: ApplicationFiled: June 27, 2008Publication date: August 19, 2010Applicant: EVONIK RÖHM GMBHInventors: Gerold Schmitt, Wolfgang Klesse, Joachim Knebel, Volker Kerscher
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Publication number: 20100174028Abstract: The invention describes an emulsion polymer which can be obtained by polymerization of a mixture comprising a) from 5 to 99.9% by weight of one or more monomers having a solubility in water of <2% by weight at 20° C. and selected from the group consisting of monofunctional (meth)acrylate monomers, styrene and vinyl esters; b) from 0 to 70% by weight of one or more monomers which can be copolymerized with the monomers a); c) from 0 to 20% by weight of one or more doubly or multiply vinylically unsaturated compounds; d) from 0 to 20% by weight of one or more polar monomers having a solubility in water of >2% by weight at 20° C.; and e) 0.Type: ApplicationFiled: June 27, 2008Publication date: July 8, 2010Applicant: Evonik Roehm GmbHInventors: Gerold Schmitt, Wolfgang Klesse, Joachim Knebel
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Publication number: 20090209679Abstract: A flow improver comprising a plurality of core-shell particles that can be formed by emulsion polymerization. The core of the core-shell particles can include a drag reducing polymer, while the shell of the particles can include repeat units of a hydrophobic compound and an amphiphilic compound. The flow improver can demonstrate increased pumping stability over conventionally prepared latex flow improvers.Type: ApplicationFiled: February 14, 2008Publication date: August 20, 2009Applicant: CONOCOPHILLIPS COMPANYInventors: Wayne R. Dreher, Kenneth W. Smith, Stuart N. Milligan, Timothy L. Burden, William F. Harris, Ray L. Johnston, Wolfgang Klesse, Gerold Schmitt, John Wey
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Publication number: 20080287629Abstract: The invention relates to mixtures of methacrylamide and aqueous N-methylolmethacrylamide solution.Type: ApplicationFiled: October 31, 2006Publication date: November 20, 2008Applicant: Evonik Roehm GmbHInventors: Wolfgang Klesse, Joachim Knebel
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Publication number: 20070225398Abstract: The invention relates to a liquid, concentrated formulation containing methacrylamide.Type: ApplicationFiled: May 20, 2005Publication date: September 27, 2007Applicant: ROEHM GMBHInventors: Joachim Knebel, Wolfgang Klesse, Bardo Schmitt
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Patent number: 7144954Abstract: The present invention relates to mixtures containing A) compounds of the formula (I) and (II) where R1 is independently at each instance hydrogen or a methyl radical, R2 is independently at each instance a linear or branched, aliphatic or cycloaliphatic radical or a substituted or unsubstituted aromatic or heteroaromatic radical and m and n are each independently an integer of not less than 0 subject to the proviso that m+n>0, and B) at least one ethylenically unsaturated monomer (A) which is different from the compounds of the formula (I) and (II). The present invention further relates to processes for polymerizing these mixtures, the highly transparent polymers thus obtainable and to their use.Type: GrantFiled: September 13, 2003Date of Patent: December 5, 2006Assignee: Röhm GmbH & Co. KGInventors: Bardo Schmitt, Wolfgang Klesse, Volker Kerscher, Patrik Hartmann
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Publication number: 20050261421Abstract: The present invention relates to mixtures containing A) compounds of the formula (I) and (II) where R1 is independently at each instance hydrogen or a methyl radical, R2 is independently at each instance a linear or branched, aliphatic or cycloaliphatic radical or a substituted or unsubstituted aromatic or heteroaromatic radical and m and n are each independently an integer of not less than 0 subject to the proviso that m+n>0, and B) at least one ethylenically unsaturated monomer (A) which is different from the compounds of the formula (I) and (II). The present invention further relates to processes for polymerizing these mixtures, the highly transparent polymers thus obtainable and to their use.Type: ApplicationFiled: September 13, 2003Publication date: November 24, 2005Applicant: ROEHM GMBH & CO. KGInventors: Bardo Schmitt, Wolfgang Klesse, Volker Kerscher, Patrik Hartmann
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Patent number: 6936734Abstract: The present invention relates to a process for preparing an unsaturated carboxylic acid anhydride by reacting an unsaturated carboxylic acid and a lower aliphatic carboxylic acid anhydride in the presence of a stabilizer and catalyst that contains a metal salt of an anionic organic compound which has at least one carboxyl group.Type: GrantFiled: February 11, 2002Date of Patent: August 30, 2005Assignee: Roehm GmbH & Co., KGInventors: Bardo Schmitt, Joachim Knebel, Wolfgang Klesse, Andrea Wittkowski, Benedikt Laux
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Publication number: 20020161260Abstract: A process for preparing an unsaturated carboxylic acid anhydride, which includes: reacting an unsaturated carboxylic acid and a lower aliphatic carboxylic acid anhydride in the presence of: a catalyst; and a stabilizer.Type: ApplicationFiled: February 11, 2002Publication date: October 31, 2002Applicant: ROEHM GMBH & CO. KGInventors: Bardo Schmitt, Joachim Knebel, Wolfgang Klesse, Andrea Wittkowski, Benedikt Laux
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Patent number: 6194530Abstract: The invention relates to polymers with antimicrobial properties, consisting of: a) 99-40 wt % non functional vinylically polymerizable monomers and b) 1-60 wt % functional vinylically polymerizable monomers of general formula (I) wherein V=vinyl, (meth)acroyl, allyl or styryl, A=a possibly available linking unit, which can be alkyl, aryl, arylalkyl or hydroxy alkyl, which can also be interrupted by hetero atoms, e.g. by hetero atoms in urethane, carbonate, ester, amide or ether groups, wherein y=0 or is 1, Hsp=a hydrophilic spacer of general formula (i) —(O—CH2—CH2)r— and/or (ii) —(O—CH2—CH(CH3))s with r=0-40, s=0-40 and r+s=2-40, also m=1.2 or 3 and R1=CH3, ethyl or benzyl, R2=an alkyl radical with 8-20 C-atoms, wherein t=1, 2 or 3 and X−=Cl−, Br−, I− or alkyl sulphate.Type: GrantFiled: July 16, 1999Date of Patent: February 27, 2001Assignee: Roehm GmbHInventors: Wolfgang Klesse, Martina Pfirmann, Frank Hill
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Patent number: 5306743Abstract: Aqueous synthetic resin dispersions comprising latex particles having an average particle diameter below 140 nanometers, consisting ofa) 5 to 45 weight percent of a core material having a dynamic glass transition temperature above 60.degree. C. andb) 95 to 55 weight percent of a shell material having a dynamic glass transition temperature below 80.degree. C., whereby the dynamic glass transition temperature of the shell is at least 20 K. below that of the core,which dispersions have a low minimum film forming temperature and give films of low tackiness and high block point.Type: GrantFiled: April 8, 1991Date of Patent: April 26, 1994Assignee: Rohm GmbHInventors: Wolfgang Klesse, Gerhard Markert, Marliese Weber
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Patent number: 5266645Abstract: Graft polymerizates on the basis of acrylates and methacrylates, comprise one or more graft monomers of the formula (I) ##STR1## where R.sub.1 stands for a hydrocarbon group having 2-24 carbon atoms and a base polymer of which 55-100 wt. % is synthesized from one or more monomers of the formula (II) ##STR2## wherein R.sub.2 stands for a hydrocarbon group having 2-24 carbon atoms, provided that the groups R.sub.1 and R.sub.2 exhibit Van-der-Waals volumes which differ by less than 30%, and that at least 10 wt. % based on the total monomers of formula (I) are grafted on the base polymer.Type: GrantFiled: December 19, 1991Date of Patent: November 30, 1993Assignee: Roehm GmbH Chemische FabrikInventors: Werner Siol, Wolfgang Klesse, Klaus Koralewsky, Ulrich Terbrack
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Patent number: 5185387Abstract: An aqueous synthetic resin dispersion having a minimum film forming temperature below 50.degree. C., containing an emulsion polymer having a core/shell structure consisting ofA) 65-90 percent by weight of a weakly crosslinked core polymer having a glass transition temperature, T.sub.g, below 0.degree. C. and an extensibility of at least 150 percent, andB) 10-35 percent by weight of an essentially non-crosslinked shell polymer having a T.sub.g below 60.degree. C. the T.sub.g of the core polymer being at least 10 Centigrade degrees below that of the shell polymer.Type: GrantFiled: September 16, 1991Date of Patent: February 9, 1993Assignee: Rohm GmbHInventors: Wolfgang Klesse, Wilhelm Elser, Theodor Mager, Juergen Christner, Hertha Kraus, Peter Rossberg, Marliese Weber
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Patent number: 5071902Abstract: A film-forming, self-crosslinking aqueous synthetic resin dispersion with reduced liberation of formaldehyde contains an emulsion polymer composed of(A) a major portion of an ethylenically unsaturated, free radically polymerizable monomer giving a polymer or copolymer with a glass transition temperature not exceeding 120.degree. C.,(B) N-methylolacrylamide or methacrylamide,(C) optionally further ethylenically unsaturated, free radically polymerizable monomers, and(D) an ethylenically unsaturated, free radically polymerizable monomer carrying a ureido group.Type: GrantFiled: January 23, 1990Date of Patent: December 10, 1991Assignee: Rohm GmbHInventors: Klaus Langerbeins, Herbert Fink, Wolfgang Klesse, Dieter Tessmer
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Patent number: 5021469Abstract: The inventive vehicle, or binder, for water based gloss paints contains, dispersed in a aqueous phase, particles of a multiphase emulsion polymer made up of(a) core material having a glass transition temperature exceeding 40.degree. C. and(b) a shell material having a glass transition temperature of less than 70.degree. C. and at least 20 K. below that of the core material.The particles have an average diameter of less than 200 nm. The composition of the shell material includes an emulsion polymer with at least 4 percent by weight of an ethylenically unsaturated carboxylic acid and more than 80 percent by weight of one or more monomers from the group consisting of styrene and alkyl esters of acrylic and/or methacrylic acid. Paint coats produced with this vehicle are distinguished by a high blocking point.Type: GrantFiled: January 23, 1990Date of Patent: June 4, 1991Assignee: Rohm GmbHInventors: Klaus Langerbeins, Wolfgang Klesse, Dieter Tessmer, Wilhelm Elser, Hans-Juergen Geyer
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Patent number: 5017631Abstract: Powders of an emulsion polymer having reduced fines and exhibiting low dusting are made by spray drying an emulsion of a polymer having a Vicat softening temperature above 60.degree. C., said emulsion containing an external plasticizer having a boiling point of at least 150.degree. C.Type: GrantFiled: December 26, 1989Date of Patent: May 21, 1991Assignee: Rohm GmbHInventors: Hubert Rauch, Peter J. Arndt, Wolfgang Klesse, Wilhelm Krall, Klaus Frank
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Patent number: 4892910Abstract: Polymer powders comprising aggregated polymer particles, said powders having a low content of fines and being suitable as processing aids in the manufacture of polyvinyl chloride, are made by spray drying an aqueous dispersion (latex) of two emulsion polymers, one of which has a dynamic glass transition temperature above 90.degree. C. and the other of which has a dynamic glass transition below 105.degree. C., the latter being at least 10 K. degrees below the former.Type: GrantFiled: July 13, 1988Date of Patent: January 9, 1990Assignee: GmbH RohmInventors: Wolfgang Klesse, Hubert Rauch, Peter J. Arndt, Norbert Suetterlin
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Patent number: 4847309Abstract: Methods for making foundry sand containing a binder by combining a dried powdered carboxylated polymer, partially in its salt form, with dry or wet foundry sand free of binder.Type: GrantFiled: March 18, 1988Date of Patent: July 11, 1989Assignee: Rohm GmbHInventors: Wolfgang Klesse, Heinz-Jochen Auer, Peter Quis
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Patent number: 4816558Abstract: A method for obtaining redispersible powders of a copolymer having a dynamic glass transition temperature, T.sub.max, below 150.degree. C., by spray drying an aqueous dispersion thereof having a minimum film forming temperature, MFT, using an inlet temperature T.sub.i and an outlet temperature T.sub.o such that MFT<T.sub.i <T.sub.max and MFT<T.sub.o <65.degree. C.Type: GrantFiled: July 27, 1987Date of Patent: March 28, 1989Assignee: Rohm GmbHInventors: Hubert Rauch, Wolfgang Klesse, Klaus Lehmann, Theodor Mager