Patents by Inventor Albert Hettche

Albert Hettche 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).

  • Patent number: 6056967
    Abstract: A process for the preparation of water-soluble, amino-containing condensates and adducts having a greater drainage and retention effect in papermaking, in which from 5 to 95% by weight of the condensates or adducts are separated off as permeate from solutions of water-soluble, amino-containing condensates or adducts by ultrafiltration through membranes and the amino-containing condensates or adducts having improved efficiency are, if required, isolated from the retentate, and the high molecular weight polymer fractions contained in the retentate are used as retention aids, drainage aids and fixing compositions in papermaking, as promoters in the sizing of paper with alkyldiketenes, as flocculants for sewage sludges, as adhesion promoters in the production of laminated films, as additives for hair and skincare compositions and as compositions for immobilizing anionic active ingredients.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: May 2, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrich Steuerle, Hubert Meixner, Rainer Dyllick-Brenzinger, Wolfgang Reuther, Hartmut Kanter, Albert Hettche, Jurgen Weiser, Gunter Scherr
  • Patent number: 5972237
    Abstract: Heterocyclic compounds IR.sup.1 --X--L (I)whereL is a cyclic carbamate residue, a lactonoxy residue or a lactam residue,X is an oxygen-containing group ##STR1## where A is a linker, and R.sup.1 is an organic radical or a group L,are used as activators for inorganic peroxy compounds, in particular as cold bleach activators or optical brighteners in detergents, cleaners and bleaches and in disinfectants.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: October 26, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Reinhard Muller, Thomas Wehlage, Wolfgang Trieselt, Alfred Oftring, Elisabeth Kappes, Gunter Oetter, Dieter Boeckh, Roland Ettl, Albert Hettche
  • Patent number: 5710228
    Abstract: Maleimide/.alpha.-olefin copolymers are composed of structural units I ##STR1## where R.sup.1 is a tetramethylpiperidinyl radical of the formula II ##STR2## R.sup.3 is hydrogen, C.sub.1 -C.sub.6 -alkyl, formyl, C.sub.2 -C.sub.6 -alkanoyl, C.sub.1 -C.sub.12 -alkoxy, C.sub.5 - or C.sub.6 -cycloalkoxy, cyanomethyl, 2-hydroxyethyl, benzyl or a radical of the formula --CR.sup.4 =CH--CO--OR.sup.5, R.sup.4 is hydrogen, C.sub.1 -C.sub.6 -alkyl or a radical of the formula --CO--OR.sup.5, andR.sup.5 is C.sub.5 -C.sub.18 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.7 -C.sub.18 -aralkyl, phenyl or tolyl, andup to 8 mol %, based on II, of R.sup.1 may furthermore be hydrogen, C.sub.1 -C.sub.22 -alkyl or C.sub.5 -C.sub.8 -cycloalkyl, and R.sup.2 is a mixture of C.sub.14 -C.sub.28 -alkyl groups, where two of these alkyl groups, which may differ by no more than two carbon atoms, each account for at least 30% of this mixture, having an average molecular weight of from 1,000 to 50,000.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: January 20, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Alfred Krause, Walter Denzinger, Albert Hettche, Alexander Aumueller, Hubert Trauth
  • Patent number: 5175361
    Abstract: A process for the preparation of copolymers which contain monoethylenically unsaturated monocarboxylic acids and dicarboxylic acids as copolymerized monomer units, which comprises copolymerizinga) 10 to 60% by weight, based on the sum of the monomers, of a monoethylenically unsaturated dicarboxylic acid of 4 to 6 carbon atoms, -or an alkali metal salt thereof or, an anhydride thereof,b) 90 to 40% by weight of a monoethylenically unsaturated monocarboxylic acid of 3 to 10 carbon atoms or an alkali metal salt thereof andc) 0 to 20% by weight of another monoethylenically unsaturated monomer, not having carboxyl groups and which is copolymerizable with a) and b);in an aqueous medium in the presence of from 0.5 to 5% by weight, based on monomers, of a water-soluble initiator.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: December 29, 1992
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Heinrich Hartmann, Wolfgang Trieselt, Albert Hettche, Rolf Schneider, Hans-Juergen Raubenheimer
  • Patent number: 5064908
    Abstract: Oxidized polyethylenes useful as lubricants in the extrusion of polyvinyl chloride are prepared by oxidation of finely divided polyethylene of high density at elevated temperatures with an oxidation gas of air and/or oxygen, the polyethylene used containing from 0.015 to 0.5% by weight of a free radical former organic compound in admixture and being contacted per hour with an oxidation gas which per kilogram of polyethylene contains from 30 to 600, in particular from 80 to 300, mg of ozone, with or without a reduced pressure treatment at elevated temperatures after the oxidation.
    Type: Grant
    Filed: November 6, 1990
    Date of Patent: November 12, 1991
    Assignee: BASF Aktiengesellschaft
    Inventors: Ludwig Schuster, Albert Hettche, Werner Liedy, Stefan Weiss, Leo Ehemann
  • Patent number: 4914167
    Abstract: Organic polyacids are prepared from monomeric monofunctional acids, such as acrylic acid or methacrylic acid and monomers without an acid group, with or without dicarboxylic acids or their anhydrides, by continuous free radical mass copolymerization under superatmospheric pressure at from 200.degree. to 400.degree. C., followed, if desired, by neutralization of the polyacids obtained. The polyacids obtained by the novel process are useful as phosphate substitutes and scale inhibitors in detergents and cleansers.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: April 3, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Hambrecht, Heinrich Hartmann, Walter Denzinger, Albert Hettche, Wolfgang Trieselt, Rolf Schneider
  • Patent number: 4889897
    Abstract: Oxidized polyethylenes useful as water-emulsifiable waxes and as lubricants in the extrusion of polyvinyl chloride are prepared by oxidizing finely divided polyethylene of high density at elevated temperatures with an oxidation gas of air and/or oxygen, the oxidation gas supplied per hour containing not less the 100 mg of ozone per kilogram of polyethylene, by performing the oxidiation in a paddle dryer and passing the oxidation gas into the free gas space above the polyethylene, the temperature in the paddly dryer preferably being continuously adjusted to from 1.degree. to 2.degree. C. below the softening point of the polyethylene.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: December 26, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Ludwig Schuster, Albert Hettche, Werner Liedy, Stefan Weiss, Leo Ehemann
  • Patent number: 4753885
    Abstract: Foam is controlled in the sugar industry and yeast industry by a process in which oxyalkylation products of the formula IR--O--(X.sub.1).sub.n --(X.sub.2).sub.m --(X.sub.3).sub.p --Zwhere R is alkyl of 6 to 22 carbon atoms or alkylphenyl where alkyl is of 6 to 12 carbon atoms, X.sub.1 and X.sub.3 are ethylene oxide units, n and p are each from 0 to 15 and the sum of n and p is not less than 2, the groups X.sub.2 are propylene oxide and/or butylene oxide units, m is from 0 to 15 and Z is straight-chain or branched alkyl of 1 to 4 carbon atoms, allyl or benzyl, having a turbidity point of <75.degree. C., are used as antifoams.
    Type: Grant
    Filed: July 23, 1987
    Date of Patent: June 28, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfram Dietsche, Klaus Lorenz, Christos Vamvakaris, Albert Hettche
  • Patent number: 4750933
    Abstract: An aqueous wax dispersion for floor care contains a mixture of an aqueous secondary dispersion of an ethylene copolymer wax, having a specific MFI, and an aqueous primary dispersion together with plasticizers, leveling agents and water, and an ethylene copolymer wax in the form of an aqueous secondary dispersion is used for floor emulsions.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: June 14, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Franz Brandstetter, Walter Ziegler, Wolfram Dietsche, Stefan Weiss, Albert Hettche, Otto Kuehneweg
  • Patent number: 4725655
    Abstract: Copolymers which contain, as copolymerized monomer units, monoethylenically unsaturated mono- and dicarboxylic acids are prepared by a process in which(a) from 10 to 60% by weight of a monoethylenically unsaturated dicarboxylic acid of 4 to 6 carbon atoms, its salt and/or, if appropriate, its anhydride,(b) from 90 to 40% by weight of a monothylenically unsaturated monocarboxylic acid of 3 to 10 carbon atoms and/or its salt and(c) from 0 to 20% by weight of another, carboxyl-free monoethylenically unsaturated monomer which is copolymerizable with (a) and (b),the percentages being based on the sum of the monomers, are polymerized in the presence of from 0.5 to 5% by weight of a water-soluble free-radical-forming initiator in an aqueous medium at from 60.degree. to 150.degree. C.
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: February 16, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Heinrich Hartmann, Wolfgang Trieselt, Albert Hettche, Rolf Schneider, Hans-Juergen Raubenheimer
  • Patent number: 4702858
    Abstract: Washing agents contain, as additives for inhibiting redeposition and promoting the primary washing action, homopolymers of acrylic acid and of methacrylic acid, copolymers of acrylic acid and methacrylic acid and copolymers which contain, as essential components,(a) an ethylenically unsaturated dicarboxylic acid of 4 to 6 carbon atoms and(b) acrylic acid, methacrylic acid and/or hydroxy-C.sub.2 -C.sub.6 -alkyl esters of ethylenically unsaturated C.sub.3 -C.sub.6 -carboxylic acids as copolymerized units,where the homo- and copolymers in the form of the free acids have a weight average molecular weight of from 5000 to 500,000 in the neutralized or amidated form, the carboxyl groups of the homo- and copolymers in each case being partially or completely neutralized with amines of the formula ##STR1## where R is C.sub.8 -C.sub.18 -alkyl or R.sup.1 --O--CH.sub.2 --(CH.sub.2).sub.n --, n is from 1 to 3, R.sup.1 is C.sub.1 -C.sub.18 -alkyl, R.sup.2 and R.sup.3 are each H or C.sub.1 -C.sub.
    Type: Grant
    Filed: July 24, 1986
    Date of Patent: October 27, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Heinrich Hartmann, Wolfgang Trieselt, Erhard Klahr, Albert Hettche
  • Patent number: 4698174
    Abstract: Pulverulent and/or granular additives for pulverulent detergents and cleaning agents, consisting of(a) from 80 to 20% by weight of one or more copolymers comprising from 40 to 90% by weight of (meth)acrylic acid and from 60 to 10% by weight of maleic acid and/or one or more copolymers comprising from 10 to 45% by weight of (meth)acrylic acid, from 10 to 45% by weight of maleic acid and from 10 to 60% by weight of one or more hydroxyalkyl (meth)acrylates where hydroxyalkyl is of 2 to 6 carbon atoms, if appropriate in the form of a partially or completely neutralized water-soluble salt,(b) from 20 to 80% by weight of nitrilotriacetic acid or its mono-, di- or trisodium or mono-, di- or tripotassium salt and(c) from 0 to 20% by weight of one or more additives conventionally used for detergent and cleaning agent formulations, the use of these pulverulent and/or granular mixtures as additives for pulverulent and/or granular detergents and cleaning agents, and processes for the preparation of the said additives.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: October 6, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Heinrich Hartmann, Wolfgang Trieselt, Albert Hettche, Rolf Schneider, Hans-Juergen Raubenheimer
  • Patent number: 4695397
    Abstract: A granular bleaching activator for use in a detergent or bleach, which has particles which have a size of from 0.5 to 3 mm and are composed of(a) from 70 to 99.5% by weight of one or more bleaching activators for per-compounds and(b) from 0.5 to 30% by weight of one or more water-swellable assistantsand which have been prepared, without use of water, by compacting the components (a) and (b).
    Type: Grant
    Filed: September 15, 1986
    Date of Patent: September 22, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl Sommer, Robert Heinz, Albert Hettche, Johannes Perner, Werner Schuster, Wolfgang Trieselt
  • Patent number: 4693909
    Abstract: A liquid preservative for plated or unplated metal surfaces and surfaces of coatings, in the form of an aqueous wax dispersion which contains a special ethylene/acrylic acid copolymer wax, consisting of from 8 to 25% by weight of acrylic acid units and from 92 to 75% by weight of ethylene units, in partially or completely neutralized form, if appropriate as a mixture with waxes based on polyethylene oxidation products and/or hydrocarbon waxes, the use of this special ethylene/acrylic acid copolymer wax for preserving plated or unplated metal surfaces and surfaces of coatings, and a process for temporarily preserving metal surfaces and surfaces of coatings.
    Type: Grant
    Filed: March 24, 1986
    Date of Patent: September 15, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Ziegler, Wolfram Dietsche, Stefan Weiss, Richard Mueller, Albert Hettche, Klaus Glaser, Christos Vamvakaris
  • Patent number: 4680327
    Abstract: Stabilizers consisting of (a) 2,5,7,8-tetramethyl-2-(2'-stearyloxyethyl)-chroman and (b) glyceryl stearate, glyceryl hydroxystearate, partial esters of stearic acid with condensates of glycerol and trimethylolpropane, triglyceryl stearate and/or tetraglyceryl stearate, with or without further conventional additives, the weight ratio of (a) to (b) being from 10:1 to 1:10, give improved stabilization to discoloration and superior stability during processing when used in plastics such as polyethylene or polypropylene.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: July 14, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Albert Hettche, Stefan Weiss, Hubert Trauth, Peter Lechtken, Michael Horner
  • Patent number: 4670524
    Abstract: Water-soluble polymer powders are prepared by polymerizing water-soluble ethylenically unsaturated monomers in a powder bed in the presence of polymerization initiators and water while maintaining the powder state, removing the heat of polymerization by distilling off water and circulating the reaction mixture, by a process in which water-insoluble organic peroxides which are liquid at 20.degree. C. are used alone or as a mixture with up to 50% by weight, based on the initiator mixture, of water-soluble, organic azo initiators and/or water-insoluble solid peroxy-containing compounds, as polymerization initiators.
    Type: Grant
    Filed: April 29, 1986
    Date of Patent: June 2, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Karlheinz Messmer, Karl Hennig, Walter Denzinger, Albert Hettche, Wolfgang Trieselt, Hans-Juergen Raubenheimer
  • Patent number: 4647396
    Abstract: The invention relates to copolymers as ingredients for detergents and cleaning agents, which contain monoethylenically unsaturated mono- and dicarboxylic acids, their hydroxyalkyl esters and, if appropriate, other ethylenically unsaturated compounds as monomer units, and are distinguished by a particular calicum-binding and magnesium-binding capacity, detergents and cleaning agents containing these copolymers, and their use in detergents and cleaning agents, in particular as sequestering agents and anti-redeposition agents.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: March 3, 1987
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Heinrich Hartmann, Albert Hettche, Ulrich Kaluza, Johannes Perner, Christos Vamvakaris
  • Patent number: 4624803
    Abstract: Fatty alcohol oxyalkylates possessing blocked terminal groups are used as low-foam, antifoaming and biodegradable surfactants for industrial cleaning processes, in particular for bottle-washing and metal-cleaning.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: November 25, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolf-Dieter Balzer, Klaus Lorenz, Helmut Wolf, Wolfgang Trieselt, Dieter Stoeckigt, Albert Hettche
  • Patent number: 4621109
    Abstract: 2,3-Dihydrobenz-4-oxa-1-thiins of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, methyl or methoxy, and R.sup.2 and R.sup.3 together may furthermore be a fused benzene ring, R.sup.4 is hydrogen or an m-valent aliphatic hydrocarbon radical which may be interrupted by sulfur and /or carry thiol groups as substituents, or is halogen when n is zero, X is --O--, --S-- or --O--CO--, m is 1 or 2 and n is zero or 1, are useful as antioxidants for organic materials.
    Type: Grant
    Filed: June 11, 1985
    Date of Patent: November 4, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Peter Lechtken, Hubert Trauth, Stefan Weiss, Albert Hettche
  • Patent number: 4614604
    Abstract: A lubricant for shaping polyvinyl chloride, which contains esters of oligomers of trihydric, tetrahydric, pentahydric or hexahydric aliphatic alcohols, having 3 or more monomer units, with saturated or unsaturated C.sub.8 -C.sub.36 -fatty acids, from 30 to 100% of the alcoholic hydroxyl groups being esterified.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: September 30, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Herbert Helfert, Wolf-Dieter Balzer, Guenter Hatzmann, Wolfram Dietsche, Albert Hettche, Stefan Weiss