Patents by Inventor Claudia Nilz
Claudia Nilz 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: 6271327Abstract: Water-soluble polymers whose characteristic structural elements comprise units of the formulae I and/or II where R1 is H, alkyl, cycloalkyl, aryl or aralkyl, R2 and R3 independently are as defined for R1 or are selected from substituted alkyl, substituted cycloalkyl, substituted aryl or substituted aralkyl, the substituents being selected from OH, O-alkyl, O-aryl, SH, S-alkyl, S-aryl, NH2, NH-alkyl, NH-aryl, N(alkyl)2, possibly in protinated form, N(Alkyl)3+3Z−, where Z is the radical of an inorganic or organic acid, COOH, COO-alkyl, CONH2, CONH-alkyl, CON(alkyl)2, CN and SO3H; and the indices x are each independently an integer from 1 to 20; and the acid addition salts of these polymers, (processes for whose preparation are also described), are used in cosmetic compositions.Type: GrantFiled: January 25, 1999Date of Patent: August 7, 2001Assignee: BASF AktiengesellschaftInventors: Manfred Niessner, Martin Rübenacker, Claudia Nilz, Peter Hössel
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Patent number: 6261581Abstract: Use of polymers which contain (a) 0.1 to 100 mol % of vinylamine units or ethyleneimine units, (b) 0 to 99.9 mol % of units of at least one monomer from the group consisting of open-chain N-vinylcarboxamides, vinyl formate, vinyl acetate, vinyl propionate, vinyl alcohol, C1- to C6-alkyl vinyl ethers, monoethylenically unsaturated C3- to C8-carboxylic acids, their esters, nitriles, amides and anhydrides, N-vinylurea, N-vinylimidazoles and N-vinylimidazolines and (c) 0 to 5 mol % of units of monomers having at least two ethylenically unsaturated double bonds, in copolymerized form, the sum of (a), (b) and (c) in mol % always being 100, as biocide.Type: GrantFiled: September 3, 1998Date of Patent: July 17, 2001Assignee: BASF AktiengesellschaftInventors: Norbert Gebhardt, Dieter Zeller, Claudia Nilz, Ulrich Steuerle, Charlotte Johansen
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Patent number: 6235835Abstract: Starch is modified with at least one cationic polymer P) and the modified starch is prepared by a process in which a) an anionically modified starch A) is reacted with a cationic polymer P) or b) a natural starch B) or a starch C) which has not been anionically modified is reacted with the cationic polymer P) in the presence of an anionic modifier M) and the polymer-modified starch is used.Type: GrantFiled: July 14, 1999Date of Patent: May 22, 2001Assignee: BASF AktiengesellschaftInventors: Manfred Niessner, Claudia Nilz, Primoz Lorencak, Martin Rübenacker, Roland Ettl
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Patent number: 6231876Abstract: A cosmetic composition comprising water-soluble copolymer, which as characteristic structural elements comprises a) vinylcarboxamide units of the general formula I where R1 and R2 independently of one another are H, alkyl, cycloalkyl, aryl or aralkyl, and b) units of the general formula II where A is a chemical bond or an alkylene group, the radicals R3 independently of one another are H, alkyl, cycloalkyl, aryl or aralkyl, or together with the nitrogen atom to which they are bonded, form an unsubstituted, mono- or polysubstituted, five- to seven-membered, heterocyclic, aromatic or nonaromatic ring, which if appropriate contains one or two further heteroatoms, selected from among O, N and S, it being possible for the heterocyclic ring to be fused to a further five- or six-membered, aromatic or nonaromatic ring, R4 is H, alkyl or aralkyl.Type: GrantFiled: March 25, 1999Date of Patent: May 15, 2001Assignee: BASF AktiengesellschaftInventors: Manfred Niessner, Claudia Nilz, Peter Hössel, Stephan Kothrade, Axel Sanner
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Patent number: 6190503Abstract: Wastewaters and circulation waters in papermaking, in deinking and in pulp bleaching are treated by adsorption of water-soluble anionic compounds and compounds dispersed in water from the wastewaters and circulation waters over finely divided adsorbents which consist of insoluble, only slightly swellable polymers which contain polymerized vinylamine units, and these polymers are used as adsorbents for treating water circulations in papermaking and for treating paper machine wastewaters and wastewaters from the deinking process and from pulp bleaching.Type: GrantFiled: March 19, 1999Date of Patent: February 20, 2001Assignee: BASF AktiengesellschaftInventors: Friedrich Linhart, Manfred Niessner, Martin Rübenacker, Claudia Nilz
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Hydrolyzed polymers of N-vinylcarboxamides as paper, paperboard and cardboard dry strength enhancers
Patent number: 6159340Abstract: Partially hydrolyzed polymers of N-vinylcarboxamides obtainable by sole polymerization of N-vinylcarboxamides of the formula ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or C.sub.1 - to C.sub.6 -alkyl, and elimination from the polymers of from 0.5 to 95 mol % of the groups of the formula ##STR2## where R.sup.1 is hydrogen or C.sub.1 - to C.sub.6 -alkyl, can be used as paper, paperboard and cardboard dry strength enhancers.Type: GrantFiled: August 31, 1998Date of Patent: December 12, 2000Assignee: BASF AktiengesellschaftInventors: Manfred Niessner, Claudia Nilz, Jens Utecht, Martin Rubenacker, Rudolf Schuhmacher -
Patent number: 6160050Abstract: A starch modified with at least one cationic polymer is prepared by a process in which dry, free-flowing starch is initially taken and the cationic polymer is applied thereon without the starch particles sticking together, and the polymer-modified starch is used.Type: GrantFiled: July 14, 1999Date of Patent: December 12, 2000Assignee: BASF AktiengesellschaftInventors: Manfred Niessner, Claudia Nilz, Primoz Lorencak, Martin Rubenacker, Roland Ettl
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Patent number: 6133392Abstract: An insoluble, only slight swellable, polymer having modified amino groups, which contain units of the formulae: ##STR1## or both (I) and (II), wherein R.sup.1, R.sup.2, R.sup.3 and Me are as defined herein.Type: GrantFiled: March 11, 1999Date of Patent: October 17, 2000Assignee: BASF AktiengesellschaftInventors: Jens Utecht, Martin Rubenacker, Claudia Nilz, Rainer Rahm
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Patent number: 6114435Abstract: Solutions of polymers containing vinylamine units, which solutions have a long shelf life, are prepared by hydrolyzing polymers containing N-vinylcarboxamide units with acids in an aqueous medium and removing the carboxylic acids eliminated from the polymers as esters from the aqueous polymer solution after the hydrolysis by adding at least stoichiometric amounts of at least one C.sub.1 -C.sub.6 -alcohol and distilling off the esters from the reaction mixture, and said aqueous solutions are used as dry and wet strength agents in papermaking.Type: GrantFiled: September 30, 1996Date of Patent: September 5, 2000Assignee: BASF AktiengesellschaftInventors: Claudia Nilz, Manfred Winter, Michael Kroner, Andreas Stange, Rudolf Schuhmacher
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Patent number: 6060566Abstract: Graft polymers are obtainable by free radical polymerization of(A) monomers or monomer mixtures comprising(a) from 1 to 100% by weight of N-vinylcarboxamides of the formula ##STR1## where R.sup.1 and R.sup.2 are each H or C.sub.1 -C.sub.6 -alkyl, (b) from 0 to 99% by weight of other monoethylenically unsaturated monomers copolymerizable with the monomers (a) and(c) from 0 to 5% by weight of monomers having at least two ethylenically unsaturated, nonconjugated double bonds in the molecule,in the presence of(B) polymers which contain units of vinyl esters of saturated C.sub.1 -C.sub.Type: GrantFiled: January 21, 1998Date of Patent: May 9, 2000Assignee: BASF AktiengesellschaftInventors: Walter Denzinger, Martin Rubenacker, Claudia Nilz, Primoz Lorencak, Dietmar Monch, Rudolf Schuhmacher, Andreas Stange
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Patent number: 6048945Abstract: A graft polymer obtained by free radically polymerizing:(A) a monomer or monomer mixture comprising:(a) from 10-100% by weight of a N-vinylcarboxamide of the formula: ##STR1## where R.sup.1 and R.sup.2 are each H or C.sub.1 -C.sub.6 -alkyl, (b) from 0-90% by weight of at least one other monoethylenically unsaturated monomer which is copolymerizable with (a), and(c) from 0-5% by weight of at least one monomer having at least two ethylenically unsaturated nonconjugated double bonds in the molecule, in the presence of(B) a polytetrahydrofuran or a polymer which contains at least 3 units of a C.sub.2 -C.sub.4 alkylene oxide and is a hornopolymer of C.sub.2-4 -alkylene oxide having two free terminal OH groups or random or block copolymers of C.sub.2-4 -alkylene oxides having two free terminal OH groups or the reaction products of C.sub.Type: GrantFiled: November 3, 1997Date of Patent: April 11, 2000Assignee: BASF AktiengesellschaftInventors: Walter Denzinger, Martin Rubenacker, Claudia Nilz, Primoz Lorencak, Dietmar Monch, Rudolf Schuhmacher, Andreas Stange
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Patent number: 5863879Abstract: The use of polymers which are preparable by reaction of(a) polymers that contain vinylamine units, with(b) compounds that contain aldehyde or keto groups, and optionally(c) NH- and/or OH-containing compoundsand which contain aminal, hemiaminal and/or aminal-acetal structures with or without unconverted vinylamine units, as detergent additive for inhibiting dye transfer during the wash, and polymers containing aminal, hemiaminal and/or aminal-acetal structures, obtainable by reaction of(a) polymers that contain vinylamine units, with(b) compounds that contain aldehyde or keto groups, and(c) NH- and/or OH-containing compounds,and detergents which contain the abovementioned polymers in amounts from 0.05 to 10% by weight.Type: GrantFiled: October 17, 1996Date of Patent: January 26, 1999Assignee: BASF AktiengesellschaftInventors: Michael Zirnstein, Wolfgang Trieselt, Knut Oppenlander, Claudia Nilz, Michael Kroner, Wolfgang Gunther
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Patent number: 5851300Abstract: In a cationic modification process for starch, starch is reacted with polymers that contain amino and/or ammonium groups in an aqueous medium at temperatures from 115.degree. C. to 180.degree. C. under an increased pressure and in the absence of oxidizers, polymerization initiators and alkali. The reaction is conducted so that maximum 10% by weight starch has its molar weight reduced. Also disclosed is the use of the thus obtained reaction products as dry strength agents for paper.Type: GrantFiled: April 29, 1997Date of Patent: December 22, 1998Assignee: BASF AktiengesellschaftInventors: Friedrich Linhart, Andreas Stange, Rudolf Schuhmacher, Heinrich Hartmann, Walter Denzinger, Manfred Niessner, Claudia Nilz, Wolfgang Reuther, Hubert Meixner
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Patent number: 5753759Abstract: Graft polymers which contain N-vinyl units and in which the grafting base is a polymer which contains in each case at least 5% by weight of units of the formulae ##STR1## where R.sup.1 and R.sup.2 are each H or C.sub.1 -C.sub.6 -alkyl, monoethylenically unsaturated monomers are grafted onto the grafting base in a weight ratio of from 100:1 to 1:100, and which have K values of at least 7 (determined according to H. Fikentscher in 5% strength by weight aqueous solution at 25.degree. C. and pH 7), are prepared by polymerization of monoethylenically unsaturated monomers in the presence of polymers which in each case contain at least 5% by weight of units of the formulae I and/or II as the grafting base in a weight ratio of from 100:1 to 1:100, and are used as dispersants for pigments, as additives for detergents and cleaning agents, and strength agents for paper and as soil stabilizers and for fertilizer compaction.Type: GrantFiled: October 24, 1996Date of Patent: May 19, 1998Assignee: Basf AktiengesellschaftInventors: Heinrich Hartmann, Walter Denzinger, Claudia Nilz
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Patent number: 5739190Abstract: A process for the preparation of a stable water-in-oil emulsion of a hydrolyzed polymer of an N-vinyl amide of the formula ##STR1## in which R and R.sup.1 denote H or C.sub.1 -C.sub.6 alkyl, by the polymerization of a compound of the formula I alone or in admixture with another ethylenically unsaturated monomer in the presence of a polymerization initiator and emulsifier in the form of a water-in-oil emulsion, to form a water-in-oil polymeric emulsion, followed by hydrolysis of the polymer in the form of the water-in-oil polymeric emulsion in the presence of an acid or base and from 1 to 30 wt %, based on the polymer, of an emulsifier, the emulsifier used being a mixture of(a) from 5 to 95 wt % of a block or graft copolymer of the structure (A-B)m, (A)-B or (B)-A, in which in each case(a) from 5 to 95 wt % of a block or graft copolymer of the structure (A-B).sub.m, (A).sub.n B or (B).sub.Type: GrantFiled: November 21, 1996Date of Patent: April 14, 1998Assignee: BASF AktiengesellschaftInventors: Heinrich Hartmann, Karl-Heinrich Schneider, Walter Denzinger, Claudia Nilz, Dietmar Monch
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Patent number: 5662781Abstract: Nitrile impurities are eliminated from polymers which contain acyclic N-vinyl-carboxamide and/or vinylamine units by treating the polymers with at least one oxidizing agent a) with exposure to light and/or b) in the presence of heavy metal ions.Type: GrantFiled: January 11, 1996Date of Patent: September 2, 1997Assignee: BASF AktiengesellschaftInventors: Walter Denzinger, Heinrich Hartmann, Michael Kroener, Claudia Nilz
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Patent number: 5630907Abstract: Copolymers which are obtained by copolymerization ofa) from 5 to 99 mol % of N-vinylcarboxamides,b) from 95 to 1 mol % of monoethylenically unsaturated carboxylic acids and/or the alkali metal, alkaline earth metal, ammonium or amine salts thereof, and if required,c) up to 30 mol % of other monoethylenically unsaturated compounds, and if required,d) up to 2 mol % of crosslinking agents,and subsequent partial or complete elimination of the acyl groups from the N-vinylcarboxamides polymerized in the copolymer, with formation of amino or ammonium groups, are used as additives to paper stock for increasing the drainage rate and the retention in papermaking, and the dry and wet strength of the paper.Type: GrantFiled: May 21, 1996Date of Patent: May 20, 1997Assignee: BASF AktiengesellschaftInventors: Claudia Nilz, Walter Denzinger, Heinrich Hartmann, Michael Kroener, Friedrich Linhart, Rudolf Schuhmacher, Dietmar Moench, Andreas Stange
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Insoluble, only slightly swellable polymers containing amino groups, their preparation and their use
Patent number: 5599898Abstract: Abstract of the Disclosure: Insoluble, only slightly swellable polymers containing amino groups, which can be obtained from popcorn polymers containing units of the structure ##STR1## where R and R.sup.1 are H or C.sub.1 -C.sub.4 -alkyl, by eliminating the group R--CO-- from at least 2% of the incorporated units of the structure I, with the formation of units of the structure II ##STR2## a process for the preparation of the amino-containing popcorn polymers by polymerizing N-vinylcarboxamides and, if desired, other monoethylenically unsaturated monomers copolymerizable therewith with from 0.Type: GrantFiled: April 25, 1995Date of Patent: February 4, 1997Assignee: BASF AktiengesellschaftInventors: Heinrich Hartmann, Walter Denzinger, Michael Kroener, Claudia Nilz -
Patent number: 5578678Abstract: Graft polymers are obtainable by free radical polymerization of(A) monomers or monomer mixtures of(a) from 10 to 100% by weight of open-chain N-vinylcarboxamides(b) from 0 to 90% by weight of other, carboxyl-free monoethylenically unsaturated monomers which are copolymerizable with the monomers (a) and(c) from 0 to 5% by weight of monomers containing two or more ethylenically unsaturated, non-conjugated double bonds in the molecule,in the presence of(B) natural substances containing saccharide structures, such as mono-, oligo- and polysaccharides,in a weight ratio (A):(B) of from 95:5 to 20:80 and, if required, subsequent hydrolysis of the amido groups of the polymerized monomers (a) of the graft polymer with formation of amino groups, and said polymers are used as dry and wet strength agents for paper, board and cardboard.Type: GrantFiled: April 19, 1994Date of Patent: November 26, 1996Assignee: BASF AktiengesellschaftInventors: Heinrich Hartmann, Walter Denzinger, Michael Kroener, Claudia Nilz, Friedrich Linhart, Andreas Stange
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Patent number: 5554261Abstract: A process for dyeing paper in connection with paper manufacture by adding water-soluble anionic dyes and cationic polymers which contain vinylamine units to the paper pulp as fixing agents and removing water from the paper pulp with the formation of dyed paper is described.Type: GrantFiled: March 15, 1995Date of Patent: September 10, 1996Assignee: BASF AktiengesellschaftInventors: Claudia Nilz, Norbert Sendhoff, Walter Breitschaft, Manfred Zillig, Primoz Lorencak