Patents by Inventor Werner Gauweiler
Werner Gauweiler 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: 8540974Abstract: Aqueous dispersions of water-soluble and/or water-swellable anionic polymers which are obtainable by free radical polymerization of ethylenically unsaturated, anionic monomers in an aqueous medium in the presence of at leas one stabilizer, the polymerization being carried out in the presence of at least one water-soluble polymer of the groups consisting of (a) graft polymers of vinyl acetate and/or vinyl propionate on (i) polyethylene glycols or (ii) polyethylene glycols or polypropylene glycols blocked at one or both terminal groups with alkyd carboxyl or amino groups, polyalkylene glycols, polyalkylene glycols blocked at one or both terminal groups with alkyl carboxy or amino groups and (b) water-soluble copolymers of (b1) nonionic monoethylenically unsaturated monomers, (b2) cationic monoethylenically unsaturated monomers and if appropriate (b3) anionic monoethylenically unsaturated monomers, the fraction of the interpolymerized cationic monomers being greater than that of the anionic monomers, as aType: GrantFiled: July 30, 2005Date of Patent: September 24, 2013Assignee: BASF AktiengesellschaftInventors: Volker Braig, Werner Gauweiler, Pulakesh Mukherjee, Christian Hubert Weidl
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Publication number: 20110091733Abstract: A paper coating slip which comprises metal salt pigments in an amount of at least 40 parts by weight, based on the total amount of pigments, and an aqueous dispersion of water-soluble copolymers is described. The copolymers are obtainable by free radical polymerization of ethylenically unsaturated, anionic monomers with ethylenically unsaturated, nonionic monomers in the presence of polymeric stabilizers for water-in-water polymer dispersions. The paper coating slips have good rheological properties and good water retention behavior in the coating of paper or cardboard.Type: ApplicationFiled: June 19, 2009Publication date: April 21, 2011Applicant: BASF SEInventors: Robert Feuerhake, Ilshat Gubaydullin, Werner Gauweiler, Christina Niedberg, Hermann Seyffer, Volker Schaedler
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Patent number: 7795340Abstract: The invention relates to aqueous dispersions of water-soluble polymers of N-vinyl-carboxamides, which are substantially salt-free and comprise anionic polymeric stabilizers having a comb-like molecular structure, processes for the preparation of the dispersions in the presence of anionic polymeric stabilizers having a comb-like molecular structure and the use of the dispersions as retention aids or fixing agents in papermaking.Type: GrantFiled: October 25, 2006Date of Patent: September 14, 2010Assignee: BASF AktiengesellschaftInventors: Bettina Wester, Volker Braig, Werner Gauweiler, Marc Leduc, Stefan Becker, Robert Feuerhake
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Patent number: 7754804Abstract: An aqueous dispersion of water-soluble polymers obtained by free radical polymerization of ethylenically unsaturated anionic monomers in an aqueous medium in the presence of a stabilizer, wherein the stabilizer comprises: (a) at least one water-soluble polymer selected from the group consisting of a graft polymer of vinyl acetate and/or vinyl propionate on polyethylene glycol, a polyethylene glycol blocked at one or both terminal groups with an alkyl, a carboxyl or an amino group, and a copolymer of alkyl polyalkylene glycol methacrylate and methacrylic acid; and (b) at least one water-soluble polymer selected from the group consisting of a hydrolyzed copolymer of vinyl alkyl ether and maleic anhydride in the form of free carboxyl groups or in the form of salts at least partially neutralized with one or more alkali metal hydroxides or one or more ammonium bases, a cationically modified potato starch, an anionically modified potato starch, a degraded potato starch and maltodextrin.Type: GrantFiled: July 17, 2004Date of Patent: July 13, 2010Assignee: BASF AktiengesellschaftInventors: Pulakesh Mukherjee, Marc Leduc, Peter Claassen, Werner Gauweiler, Roland Nowack
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Publication number: 20080287596Abstract: The invention relates to aqueous dispersions of water-soluble polymers of N-vinyl-carboxamides, which are substantially salt-free and comprise anionic polymeric stabilizers having a comb-like molecular structure, processes for the preparation of the dispersions in the presence of anionic polymeric stabilizers having a comb-like molecular structure and the use of the dispersions as retention aids or fixing agents in papermaking.Type: ApplicationFiled: October 25, 2006Publication date: November 20, 2008Applicant: Basf SEInventors: Bettina Wester, Volker Braig, Werner Gauweiler, Marc Leduc, Stefan Becker, Robert Feuerhake
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Publication number: 20080182773Abstract: The invention relates to the use of mixtures of polymers comprising amine groups and polymers comprising amide groups for modifying the rheology of compositions comprising water, and to rheology modifying methods. In particular, the invention relates to the use of these mixtures for the thickening of compositions comprising water for cosmetic, human and animal nutrition, dermatology, pharmacy and detergents and cleaners, crop protection, surface modification and during petroleum production, such as, for example, enhanced oil recovery.Type: ApplicationFiled: March 23, 2006Publication date: July 31, 2008Applicant: BASF AktiengesellschaftInventors: Werner Gauweiler, Volker Braig, Ivette Garcia Castro, Son Nguyen-Kim, Matthias Laubender, Marcus Guzmann, Olga Pinneker
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Patent number: 7297733Abstract: Aqueous dispersions of water-soluble polymers of N-vinylcarboxamides contain, based on 100 parts of water, (A) from 5 to 80 parts by weight of water-soluble polymer containing N-vinylformamide units and/or N-vinylacetamide units and having particle sizes of from 50 nm to 2 ?m and (B) from 1 to 50 parts by weight of at least one polymeric dispersant which is incompatible with the water-soluble polymers (A) in aqueous solution, which dispersions are prepared by polymerizing (A) from 5 to 80 parts by weight of N-vinylformamide and/or N-vinylacetamide, if desired together with other monoethylenically unsaturated monomers which form water-soluble polymers therewith, and (B) from 1 to 50 parts by weight of at least one polymeric dispersant which is incompatible with the polymers, formed from the monomers (A), in aqueous solution, in 100 parts by weight of water, at from 30 to 95° C. in the presence of from 0.001 to 5.Type: GrantFiled: January 10, 2006Date of Patent: November 20, 2007Assignee: BASF AktiengesellschaftInventors: Anton Negele, Werner Gauweiler, Hubert Meixner, Norbert Mahr, Martin Ruebenacker
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Publication number: 20070212321Abstract: Aqueous dispersions of water-soluble and/or water-swellable anionic polymers which are obtainable by free radical polymerization of ethylenically unsaturated, anionic monomers in an aqueous medium in the presence of at leas one stabilizer, the polymerization being carried out in the presence of at least one water-soluble polymer of the groups consisting of (a) graft polymers of vinyl acetate and/or vinyl propionate on (i) polyethylene glycols or (ii) polyethylene glycols or polypropylene glycols blocked at one or both terminal groups with alkyd carboxyl or amino groups, polyalkylene glycols, polyalkylene glycols blocked at one or both terminal groups with alkyl carboxy or amino groups and (b) water-soluble copolymers of (b1) nonionic monoethylenically unsaturated monomers, (b2) cationic monoethylenically unsaturated monomers and if appropriate (b3) anionic monoethylenically unsaturated monomers, the fraction of the interpolymerized cationic monomers being greater than that of the anionic monomers, as a stabilType: ApplicationFiled: July 30, 2005Publication date: September 13, 2007Applicant: BASF AktiengesellschaftInventors: Volker Braig, Werner Gauweiler, Pulakesh Mukherjee, Christian Weidl
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Publication number: 20070117903Abstract: Aqueous dispersions of water-soluble polymers of ethylenically unsaturated anionic monomers are obtainable by free radical polymerization of the monomers in an aqueous medium in the presence of at least one stabilizer, the polymerization being carried out in the presence of at least one water-soluble polymer of the groups consisting of (a) graft polymers of vinyl acetate and/or vinyl propionate on polyethylene glycols, polyethylene glycols blocked at one or both terminal groups with alkyl, carboxyl or amino groups, copolymers of alkyl polyalkylene glycol acrylates or alkyl polyalkylene glycol methacrylates and acrylic acid and/or methacrylic acid, polyalkylene glycols, polyalkylene glycols blocked at one or both terminal groups with alkyl, carboxyl or amino groups, and (b) hydrolyzed copolymers of vinyl alkyl ethers and maleic anhydride in the form of the free carboxyl groups and in the form of the salts at least partly neutralized with alkali metal hydroxides or ammonium bases, and/or of water-soluble starchType: ApplicationFiled: July 17, 2004Publication date: May 24, 2007Applicant: BASF AktiengesellschaftInventors: Pulakesh Mukherjee, Marc Leduc, Peter Claassen, Werner Gauweiler, Roland Nowack
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Publication number: 20060165639Abstract: The invention relates to the use of a cationic crosslinked polymer which is preparable by free-radical polymerization in the presence of salts and of protective colloids in cosmetics.Type: ApplicationFiled: August 29, 2003Publication date: July 27, 2006Applicant: Basf AktiengesellschaftInventors: Werner Gauweiler, Ludger Wegmann, Marc Leduc, Lysander Chrisstoffels, Michael Gotsche, Claudia Wood
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Publication number: 20060122322Abstract: Aqueous dispersion obtainable by free-radical polymerization of a) at least one N-vinyl-containing monomer b) at least one polymeric dispersant c) at least one polymeric precipitation agent d) at least one crosslinker e) optionally further monomers f) optionally at least one regulator g) optionally a buffer substance where the weight ratio of b) to c) is in the range from 1:50 to 1:0.02.Type: ApplicationFiled: December 16, 2003Publication date: June 8, 2006Applicant: BASF AktiengesellschaftInventors: Lysander Chrisstoffels, Peter Hossel, Marc Leduc, Claudia Wood, Maximillian Angel, Klemens Mathauer, Pulakesh Mukherjee, Werner Gauweiler, Henning Bolter
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Publication number: 20060116470Abstract: A process for the production of water-soluble or water-swellable cationic polymers by (i) free-radically initiated copolymerization of monomer mixtures in water comprising (a) from 1 to 99% by weight of a cationic monomer or quaternizable monomer, (b) from 1 to 99% by weight of a water-soluble monomer, (c) from 0 to 10% by weight of a bi- or polyfunctional, free-radically copolymerizable monomer, adjusting the amounts (a) to (c) in such a way that the resulting polymer has an overall positive charge, in the presence of 1 to 100% of the amount of a salt which is necessary to saturate the reaction medium with said salt and in the presence of 0.1 to 20% by weight referred to the weight of the dispersion, of an amphoteric dispersant having an overall negative charge, and (ii) subsequent quaternization of the polymer if the monomer (a) employed is a non-quaternized monomer is disclosed.Type: ApplicationFiled: August 29, 2003Publication date: June 1, 2006Inventors: Werner Gauweiler, Marc Leduc, Lysander Chrisstoffels, Michael Gotsche, Claudia Wood
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Publication number: 20060116448Abstract: Aqueous dispersions of water-soluble polymers of N-vinylcarboxamides contain, based on 100 parts of water, (A) from 5 to 80 parts by weight of water-soluble polymer containing N-vinylformamide units and/or N-vinylacetamide units and having particle sizes of from 50 nm to 2 ?m and (B) from 1 to 50 parts by weight of at least one polymeric dispersant which is incompatible with the water-soluble polymers (A) in aqueous solution, which dispersions are prepared by polymerizing (A) from 5 to 80 parts by weight of N-vinylformamide and/or N-vinylacetamide, if desired together with other monoethylenically unsaturated monomers which form water-soluble polymers therewith, and (B) from 1 to 50 parts by weight of at least one polymeric dispersant which is incompatible with the polymers, formed from the monomers (A), in aqueous solution, in 100 parts by weight of water, at from 30 to 95° C. in the presence of from 0.001 to 5.Type: ApplicationFiled: January 10, 2006Publication date: June 1, 2006Applicant: BASF AktiengesellschaftInventors: Anton Negele, Werner Gauweiler, Hubert Meixner, Norbert Mahr, Martin Rubenacker
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Patent number: 7034068Abstract: Aqueous dispersions of water-soluble polymers of N-vinylcarboxamides contain, based on 100 parts of water, (A) from 5 to 80 parts by weight of water-soluble polymer containing N-vinylformamide units and/or N-vinylacetamide units and having particle sizes of from 50 nm to 2 ?m and (B) from 1 to 50 parts by weight of at least one polymeric dispersant which is incompatible with the water-soluble polymers (A) in aqueous solution, which dispersions are prepared by polymerizing (A) from 5 to 80 parts by weight of N-vinylformamide and/or N-vinylacetamide, if desired together with other monoethylenically unsaturated monomers which form water-soluble polymers therewith, and (B) from 1 to 50 parts by weight of at least one polymeric dispersant which is incompatible with the polymers, formed from the monomers (A), in aqueous solution, in 100 parts by weight of water, at from 30 to 95° C. in the presence of from 0.001 to 5.Type: GrantFiled: October 30, 1999Date of Patent: April 25, 2006Assignee: BASF AktiengesellschaftInventors: Anton Negele, Werner Gauweiler, Hubert Meixner, Norbert Mahr, Martin Rübenacker