Patents by Inventor Ludwig Schieferstein

Ludwig Schieferstein 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: 8580287
    Abstract: Suggested are oil-based agrochemical compositions with increased viscosity, comprising (a) biocides, (b) hydrophobic carriers, and (c) polymers selected from the group consisting of poly(meth)acrylates, polymaleates and polyfumarates.
    Type: Grant
    Filed: February 6, 2010
    Date of Patent: November 12, 2013
    Assignee: Cognis IP Management GmbH
    Inventors: Stéphanie Merlet, William Lamarca, Ludwig Schieferstein, Markus Scherer, Peter Bene
  • Patent number: 8334357
    Abstract: Disclosed is a thickener based on an aqueous preparation of a nonionic, water-dispersible or water-soluble polyurethane, obtained by reacting: (a) hydrophilic polyols containing at least two OH groups and at least two functional groups selected from ether and ester, of molecular weight at least 300; (b) hydrophobic compounds containing at least one zerewitinoff-active hydrogen atom, of molecular weight about 100 to about 500, with at least one linear or branched, saturated or unsaturated alkyl chain having at least five consecutive carbon atoms not linked to a hetero atom; and (c) at least difunctional isocyanates, where the components are reacted in equivalent ratios OHa):ZHb):NCOc) of 1:(1+x):2(1+y), with the provisos that x is 0.05-1.2, y is (0.2-1.05)x, and more than one equivalent of NCOc) is present versus the sum of OHa) and ZHb).
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: December 18, 2012
    Assignee: Cognis IP Management GmbH
    Inventors: Ludwig Schieferstein, Oliver Pietsch
  • Publication number: 20110301037
    Abstract: Suggested are oil-based agrochemical compositions with increased viscosity, comprising (a) biocides, (b) hydrophobic carriers, and (c) polymers selected from the group consisting of poly(meth)acrylates, polymaleates and polyfumarates.
    Type: Application
    Filed: February 6, 2010
    Publication date: December 8, 2011
    Applicant: Cognis IP Management Gmbh
    Inventors: Stéphanie Merlet, William Lamarca, Ludwig Schieferstein, Markus Scherer, Peter Bene
  • Publication number: 20100130644
    Abstract: Adducts (A) of ethylene oxide and/or propylene oxide with fatty alcohols having 8 to 22 C atoms are suitable as coalescents, more particularly in the production of coatings of any kind based on aqueous polymer dispersions and latex dispersions.
    Type: Application
    Filed: November 16, 2009
    Publication date: May 27, 2010
    Applicant: COGNIS IP MANAGEMENT GMBH
    Inventors: Shailesh C. Shah, Heinz-Gunther Schulte, Ludwig Schieferstein, Harald Frommelius, Edda Bergmann
  • Publication number: 20080108775
    Abstract: A thickener based on an aqueous preparation of a nonionic, water-dispersible or water-soluble polyurethane is provided, where the polyurethane is obtainable by reacting: (a) one or more hydrophilic polyols containing per molecule at least two OH groups and at least two functional groups selected from ether and ester, the molecular weight being at least 300; (b) one or more hydrophobic compounds containing at least one zerewitinoff-active hydrogen atom per molecule, the molecular weight ranging from about 100 to about 500 with at least one linear or branched, saturated or unsaturated alkyl chain per molecule, the alkyl chain having at least five consecutive carbon atoms and is not linked to a hetero atom; and (c) one or more at least difunctional isocyanates, where the components are reacted in ratios of OHa):ZHb):COc) of 1:(1+x):2(1+y), with the provisos that x is 0.05-1.2 and y is (0.2-1.05)x. A thickener concentrate is also provided.
    Type: Application
    Filed: June 22, 2005
    Publication date: May 8, 2008
    Inventors: Ludwig Schieferstein, Oliver Pietsch
  • Patent number: 7318929
    Abstract: A cosmetic composition containing a polyether urethane thickener corresponding to formula I: wherein R1, R2 and R3, independently of one another, represent linear or branched alkyl and/or alkenyl groups containing from about 6 to 22 carbon atoms, x, y and z, independently of one another, represent a number from 1 to 10 and k, m and n, independently of one another, represent a number from about 10 to 200.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: January 15, 2008
    Assignee: Cognis Deutschland GmbH & Co. KG
    Inventors: Ludwig Schieferstein, Werner Seipel, Joachim Conradi, Dagmar Goebels
  • Publication number: 20070155924
    Abstract: A starter system for polymerization of unsaturated monomers in a nonaqueous media is provided. The starter system comprises a peroxide compound (0.02% to 7%), an organic hydrazine derivative (0.005% to 3%) and a transition metal ion (1 to 1000 ppm) the concentation based on the polymerization mixture as a whole. The starter system prevents rapid polymerization and development of heat in the polymerization system at the beginning of the polymerization. The preferred nonaqueous solvents are aromatic hydrocarbons.
    Type: Application
    Filed: April 30, 2004
    Publication date: July 5, 2007
    Inventors: Ludwig Schieferstein, William LaMarca
  • Patent number: 7214730
    Abstract: Dispersant compositions are described which contain: (a) a carrier medium comprising glycerol carbonate, the carrier medium present in an amount of from 10 to 80% by weight based on the composition; and (b) one or more polyester dispersants present in an amount of from 20 to 90% by weight based on the composition.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: May 8, 2007
    Assignee: Cognis Deutschland GmbH & Co. KG
    Inventors: Ludwig Schieferstein, Manfred Gorzinski
  • Publication number: 20050257325
    Abstract: Aqueous dispersions containing at least: a) a copolymer of compounds corresponding to formula (I): R1—O—CO—CR2?CH2??(I), ?in which R1 is a branched or unbranched alkyl group containing 8 to 22 carbon atoms and R2 is a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms, with monomers selected from compounds corresponding to formula (Ia): R3—O—CO—CR4?CH2??(Ia), ?in which R3 is a branched or unbranched alkyl group containing 1 to 6 carbon atoms and R4 is a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms, and b) a copolymer of compounds corresponding to formula (II): CnF2n—CH2—CH2—O—CO—CR5?CH2??(II), ?in which R5 is a hydrogen atom or an alkyl group containing 1 to 4 carbon atoms and n is a number of 4 to 12, with monomers selected from compounds corresponding to formula (Ia), and c) emulsifiers, with the proviso that the ratio by weight between the copolymers a) and the copolymers b) is 10:1 to 1:10.
    Type: Application
    Filed: September 5, 2003
    Publication date: November 24, 2005
    Applicant: Cognis Deutschland GMBH & Co. KG
    Inventors: Ludwig Schieferstein, Ludwig Bonniger, Joachim Conradi, Manfred Gorzinski, Bernd Wahle, Tunte Clemens
  • Publication number: 20050187342
    Abstract: Thickeners based on an aqueous preparation of nonionic water-dispersible or water-soluble polyurethanes comprising constituent units provided by (a) at least one polyfunctional isocyanate; (b) at least one polyether polyol, (c) at least one monofunctional alcohol; and (d) optionally, at least one polyfunctional alcohol, wherein compound (d) contains no functional groups other than the OH groups, and component (c) comprises 2-(n-butyl)-1-octanol. The thickeners are distinguished by an excellent thickening effect, in aqueous dispersions.
    Type: Application
    Filed: February 17, 2005
    Publication date: August 25, 2005
    Inventors: Ludwig Schieferstein, Oliver Pietsch
  • Publication number: 20050017219
    Abstract: Dispersant compositions are described which contain: (a) a carrier medium comprising a ternary mixture of diisobutyl esters of succinic acid, glutaric acid and adipic acid, the carrier medium present in an amount of from 10 to 80% by weight based on the composition; and (b) one or more polyurethane dispersants present in an amount of from 20 to 90% by weight based on the composition.
    Type: Application
    Filed: September 27, 2002
    Publication date: January 27, 2005
    Inventors: Ludwig Schieferstein, Heinz-Guenther Schulte, Manfred Gorzinski, Christina Hirsch
  • Publication number: 20050004289
    Abstract: Dispersant compositions are described which contain: (a) a carrier medium comprising glycerol carbonate, the carrier medium present in an amount of from 10 to 80% by weight based on the composition; and (b) one or more polyester dispersants present in an amount of from 20 to 90% by weight based on the composition.
    Type: Application
    Filed: September 27, 2002
    Publication date: January 6, 2005
    Inventors: Ludwig Schieferstein, Manfred Gorzinski
  • Publication number: 20040254278
    Abstract: A castable composition containing: (a) from about 10 to 80% by weight of a carrier medium containing an ester of a C8-22 fatty acid and a mono- and/or polyhydric alcohol; and (b) from about 20 to 90% by weight of a polyacrylate, and wherein the composition is liquid and pourable at a temperature of about 25° C. and has a VOC content of less than about 0.
    Type: Application
    Filed: May 6, 2004
    Publication date: December 16, 2004
    Inventors: Ludwig Schieferstein, Manfre Gorzinski, Harald Frommelius, Sonja Budtke, Heinz-Guenther Schulte
  • Publication number: 20040115158
    Abstract: The invention relates to cosmetic preparations containing polyetherurethane thickening agents according to formula (I), in which R1, R2 and R3 independently of one another represent linear or branched alkyl and/or alkenyl groups with between 6 and 22 carbon atoms, x, y, z independently of one another represent numbers from 1 to 10 and k, m and n independently of one another represent numbers between 10 and 200. The invention also relates to the use of said preparations for cleansing the skin and hair and for skin and hair care.
    Type: Application
    Filed: October 10, 2003
    Publication date: June 17, 2004
    Inventors: Ludwig Schieferstein, Werner Seipel, Joachim Conradi, Dagmar Goebels
  • Publication number: 20040105836
    Abstract: Cosmetic preparations are comprised of a thickening effective amount of a polyether urethane thickener of the formula (I):
    Type: Application
    Filed: October 2, 2003
    Publication date: June 3, 2004
    Inventors: Werner Seipel, Dagmar Goebels, Ludwig Schieferstein, Joachim Conradi
  • Patent number: 6365234
    Abstract: Polymerizable compositions containing titanium, manganese and/or zirconium salts of olefinically unsaturated, polymerizable carboxylic acids and other olefinically unsaturated comonomers and a radical polymerization initiator are suitable for the organic coil coating of metallic materials. These non-aqueous metal coatings are suitable for the chromium-free pretreatment of steel with excellent corrosion control.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: April 2, 2002
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Ludwig Schieferstein, Manfred Gorzinski, Stefan Kuepper, Herbert Fischer
  • Patent number: 6251849
    Abstract: Cationic polymers comprising at least 40 mole percent monomer units of the formula (I): wherein n is 2 to 4, R1 is hydrogen or methyl, and R2, R3 and R4 independently are hydrogen, C1-4 alkyl or C1-4 alkenyl, and X− is an anion selected from the group consisting of halide anions and monoalkyl anions of sulfuric acid semiester are used as soil-release compounds in hard surface cleaners.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: June 26, 2001
    Assignee: Henkel Kommanditgesellschaft Auf Aktien
    Inventors: Rainer Jeschke, Ludwig Schieferstein, Katica Bocarac, Paul Birnbrich, Herbert Fischer, Rainer Kade, Eva Kiewert, Dieter Nickel, Horst-Dieter Speckmann, Juan-Carlos Wuhrmann
  • Patent number: 6180705
    Abstract: The invention concerns a polyacrylamide-containing composition which is characterized in that it has a molecular weight of between 2,000 and 8,000 g/mol, determined by means of gel permeation chromatography (GPC), and as a 15% aqueous solution still has a Brookfield viscosity of between 100 and 500 mPas at 25° C. The invention further concerns the use of this polyacrylamide-containing composition for the flat bonding of water absorbent and hard surfaces and for equipping plastic surfaces with non-slip protection.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: January 30, 2001
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Norbert Huebner, Wolf-Ruediger Mueller, Bernd Willi Peters, Ludwig Schieferstein
  • Patent number: 6126921
    Abstract: A process for treating hair by applying thereto a composition in the form of an aqueous dispersion of a water-insoluble polymer having a glass transition temperature of -20.degree. C. to +70.degree. C. wherein the water-insoluble polymer is formed from monomers selected from the group consisting of esters of acrylic acid, esters of methacrylic acid and styrene, and the composition further contains a water-soluble polymer.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: October 3, 2000
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Winfried Emmerling, Hans-Peter Hofmann, Rainer Kade, Ludwig Schieferstein
  • Patent number: 6025314
    Abstract: A process for improving the soil release properties of dishwashing machine rinse aid compositions used to rinse dishware and remove starch-containing soils therefrom by adding to the compositions a cationic polymer containing monomer units corresponding to formula I: ##STR1## in which R.sup.1 is hydrogen or a methyl group,R.sup.2, R.sup.3 and R.sup.4 are the same or different and represent hydrogen or a C.sub.1-8 alk(en)yl group, R.sup.8 is a linear, cyclic or branched alkylene group containing 2 to 8 carbon atoms, andX represents a monofunctional anion or the 1/m part of an m-functional anion.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: February 15, 2000
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Christian Nitsch, Willi Buchmeier, Peter Jeschke, Ludwig Schieferstein, Herbert Fischer