Patents by Inventor Manfred Niessner
Manfred Niessner 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: 8349134Abstract: The invention relates to a process for producing paper, board and cardboard of high dry strength by separately adding a polymer comprising vinylamine units and a polymeric anionic compound to a paper pulp, dewatering the pulp and drying the paper products, which comprises using as polymeric anionic compound at least one copolymer obtainable by copolymerizing (a) at least one N-vinylcarboxamide of the formula in which R1 and R2 are H or C1- to C6 alkyl, (b) at least one monoethylenically unsaturated monomer comprising acid groups, and/or the alkali metal, alkaline earth metal or ammonium salts thereof, and if appropriate (c) other monoethylenically unsaturated monomers, and if appropriate (d) compounds having at least two ethylenically unsaturated double bonds in their molecule.Type: GrantFiled: November 21, 2005Date of Patent: January 8, 2013Assignee: BASF SEInventors: Anton Esser, Hans-Joachim Haehnle, Martin Ruebenacker, Norbert Schall, Jacques Dupuis, Josef Neutzner, Manfred Niessner, Berthold Sturm
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Publication number: 20090145566Abstract: The invention relates to a process for producing paper, board and cardboard of high dry strength by separately adding a polymer comprising vinylamine units and a polymeric anionic compound to a paper pulp, dewatering the pulp and drying the paper products, which comprises using as polymeric anionic compound at least one copolymer obtainable by copolymerizing (a) at least one N-vinylcarboxamide of the formula in which R1 and R2 are H or C1- to C6 alkyl, (b) at least one monoethylenically unsaturated monomer comprising acid groups, and/or the alkali metal, alkaline earth metal or ammonium salts thereof, and if appropriate (c) other monoethylenically unsaturated monomers, and if appropriate (d) compounds having at least two ethylenically unsaturated double bonds in their molecule.Type: ApplicationFiled: November 21, 2005Publication date: June 11, 2009Applicant: BASF AKTIENGESELLSCHAFTInventors: Anton Esser, Hans-Joachim Hahnle, Martin Rubenacker, Norbert Schall, Jacques Dupuis, Josef Neutzner, Manfred Niessner, Berthold Sturm
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Patent number: 6541573Abstract: A process for the elimination of formamide from polymers containing N-vinylformamide units involves treating formamide-containing polymers with from 1 to 2 mol-equivalents of an acid or a base, based on 1 mol-equivalent of formamide, under reaction conditions such that the N-vinylformamide units in the polymer undergo virtually no hydrolysis.Type: GrantFiled: February 7, 2001Date of Patent: April 1, 2003Assignee: BASF AktiengesellschaftInventors: Manfred Niessner, Martin Rübenacker, Norbert Mahr
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Patent number: 6429252Abstract: A mixture comprises an amino resin and a polymer which consists to the extent of at least 80% by weight of C2- to C3 alkylene oxide groups.Type: GrantFiled: October 4, 1999Date of Patent: August 6, 2002Assignee: BASF AktiengesellschaftInventors: Wolfram Weiss, Matthias Kummer, Manfred Niessner, Hans Schupp
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Patent number: 6379588Abstract: A monomer composition, which contains A) vinyl-containing monomers in which a heteroatom selected from the group consisting of the halogens, nitrogen, oxygen, sulfur and silicon is present on the vinyl group, and B) a compound or a mixture of compounds of the formula II where R4 is methyl, ethyl, isopropyl, n-propyl, n-butyl, isobutyl, sec-butyl, tert-butyl or trimethylsilyl.Type: GrantFiled: March 23, 1999Date of Patent: April 30, 2002Assignee: BASF AktiengesellschaftInventors: Heinz Friedrich Sutoris, Andreas Koch, Alexander Aumüller, Jacques Dupuis, Manfred Niessner
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Publication number: 20020040091Abstract: A mixture comprises an amino resin and a polymer which consists to the extent of at least 80% by weight of C2- to C3 alkylene oxide groups.Type: ApplicationFiled: October 4, 1999Publication date: April 4, 2002Inventors: WOLFRAM WEISS, MATTHIAS KUMMER, MANFRED NIESSNER, HANS SCHUPP
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Patent number: 6284825Abstract: Solutions of aminotriazine resins at least 30 mol % of whose alkylol groups are etherified with a C1-C16 alkanol in a mono-C1-C4 alkyl glycol of the formula R1—O—(R2—O—)w(R3—O—)x(R2—O—)y(R3—O—)z H. I where R1 is C1-C4 alkyl, R2 is CH2—CH2 and R3 is and w, x, y and z are an integer from 0 to 10 and at least one of them is other than 0 or in a solvent mixture which consists to the extent of at least 20% by weight a of mono-C1-C4 alkyl glycol of the above formula.Type: GrantFiled: October 1, 1999Date of Patent: September 4, 2001Assignee: BASF AktiengesellschaftInventors: Wolfram Weiss, Gerhard Fischer, Manfred Niessner, Werner Schnurr
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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: 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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Patent number: 6184310Abstract: A process for preparing addition polymers which contain carbamate units comprises reacting polyethyleneimines or addition polymers which contain vinylamine units of the formula where R1 is hydrogen or C1-C6-alkyl, with haloformic esters, the carbamate-functionalized polyethyleneimine or vinylamine polymers thus obtainable being useful as retention, drainage and flocculation aids and as fixatives in papermaking, as protective colloids for the preparation of aqueous alkyldiketene dispersions and as dispersants for the preparation of aqueous filler slurries.Type: GrantFiled: August 17, 1999Date of Patent: February 6, 2001Assignee: BASF AktiengesellschaftInventors: Jens Utecht, Manfred Niessner, Sabine Weiguny, Primoz Lorencak, Armin Stamm
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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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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: 6147145Abstract: A monomer composition is described, containing A) vinyl-containing monomers in which the vinyl bears a hetero-atom selected from the group consisting of the halogens, nitrogen, oxygen, sulfur or silicon, andB) at least one N-oxyl compound of a secondary amine which does not bear hydrogen on the .alpha.-carbons, in an amount effective as stabilizer against premature polymerization.Type: GrantFiled: September 8, 1998Date of Patent: November 14, 2000Assignee: BASF AktiengesellschaftInventors: Alexander Aumuller, Andreas Koch, Heinz Friedrich Sutoris, Jacques Dupuis, Manfred Niessner
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Patent number: 6057404Abstract: Polymers containing .beta.-hydroxyalkylvinylamine units, which are obtainable by reacting polymers containing vinylamine units with epoxides of the formula ##STR1## where R=C.sub.2 -C.sub.28 -alkyl, phenyl, C.sub.1 -C.sub.18 -alkylphenyl or C.sub.2 -C.sub.18 -alkenyl, are described, as are a process for preparing the polymers and use of the polymers as retention and drainage aids and flocculants and as fixatives in paper making, as protective colloid for producing alkyldiketene dispersions or alkenylsuccinic anhydride dispersions, as emulsifier for producing aqueous filler suspensions and as corrosion inhibitor.Type: GrantFiled: July 1, 1998Date of Patent: May 2, 2000Assignee: BASF AktiengesellschaftInventors: Jens Utecht, Manfred Niessner, Dietmar Monch, Martin Rubenacker
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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: 5795926Abstract: A process is described for the preparation of finely divided polymer powders by polymerizing water-soluble monomers in the aqueous phase of a water-in-oil emulsion in the presence of water-in-oil emulsifiers and polymerization initiators, removing the water from the resultant water-in-oil polymer suspension by azeotropic distillation, and isolating the suspended, finely divided polymer powder, either the polymerization of the water-soluble monomers being carried out in the presence of from 0.1 to 10% by weight, based on the monomers employed in the polymerization, of protective colloids, or the protective colloids being added to the water-in-oil polymer suspension after the polymerization is complete. The polymerization is preferably carried out in the presence of surfactant. The finely divided pulverulent polymers are used as flocculants or thickeners for aqueous systems.Type: GrantFiled: November 21, 1991Date of Patent: August 18, 1998Assignee: BASF AktiengesellschaftInventors: Manfred Niessner, Norbert Grund, Wilfried Heide, Heinrich Hartmann
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Patent number: 5760226Abstract: Binders compriseA) an aminotriazine derivative in which the primary amino groups of the triazine are methylolated on average with at least one mole of formaldehyde per mole of primary amino groups, and these methylol groups are etherified on average with at least 0.5 mol of primary alcohol per mole of methylol group and the primary alcohols are a mixture containinga) 0.5-99.5 mol % of a C.sub.1 -C.sub.4 -alkanol andb) 99.5-0.5 mol % of an alcohol of the formulaR.sup.1 --O--?R.sup.2 --O!.sub.n --R.sup.3 --OH I,in which R.sup.1 is C.sub.1 -C.sub.24 -alkyl or C.sub.6 -C.sub.12 -aryl which may be unsubstituted or substituted by from one to three C.sub.1 -C.sub.8 -alkyl groups, and R.sup.2 and R.sup.3 independently of one another are C.sub.2 -C.sub.8 -alkylene and n is an integer from 1 to 100, or of a mixture of higher-boiling alcohols having a boiling point of above 120.degree. C.Type: GrantFiled: January 23, 1997Date of Patent: June 2, 1998Assignee: BASF AktiengesellschaftInventors: Manfred Niessner, Wolfram Weiss, Jurgen Tropsch, Matthias Kummer, Georg Meichsner
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Patent number: 5576386Abstract: A process for the continuous polymerization of vinyl monomers to form vinyl polymers having a molecular weight M.sub.n of from 1000 to 20,000 comprisesa. carrying out the polymerization within an annular gap from 0.5 to 10 mm in width,b. confining the annular gap on the inner surface with a rotor, andc. carrying out the polymerization at from 110.degree. to 270.degree. C.Type: GrantFiled: January 28, 1993Date of Patent: November 19, 1996Assignee: BASF AktiengesellschaftInventors: Fritz E. Kempter, Manfred Niessner, Ralph Diener, Heino Thiele, Wolfram Weiss, Hans Renz