Patents by Inventor Hendrik Ahrens

Hendrik Ahrens 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).

  • Publication number: 20100216960
    Abstract: The invention relates to the use of macromonomers produced using DMC catalyst for the production of polycarboxylate ethers obtainable by polymerization of the monomers (A), (B), and (C), wherein (A) is a monomer of the formula (I), where A is C2 to C4 alkylene, B is a C2 to C4 alkylene that is different from A, R is hydrogen or methyl, m is a number from 1 to 500, n is a number from 1 to 500, (B) is an ethylenically unsaturated monomer containing at least one carbonic acid function, (C) is a further ethylenically unsaturated monomer that is different from (A) and (B).
    Type: Application
    Filed: September 18, 2008
    Publication date: August 26, 2010
    Applicant: CLARIANT FINANCE (BVI) LIMITED
    Inventors: Hendrik Ahrens, Carsten Schaefer
  • Publication number: 20100029842
    Abstract: Disclosed is a process for preparing copolymer dispersions made of alkylene oxides and glycidyl ethers according to formula (I) in which R1 is hydrogen or a C1-C4-alkyl radical, R2 and R4 are an alkyl or aryl radical having 1 to 30 carbon atoms, and R3 is an alkyl or aryl radical having 1 to 50 carbon atoms, which may also contain heteroatoms. A is an alkylene unit having 2 to 6 carbon atoms. In formula (1), x is a number from 0 to 10, y is a number from 0 to 10, n is a number from 0 to 100, k is a number from 1 to 100, R5 is an acid group or hydrogen, and m is a number from 1 to 500, with the proviso that (y+n) must be at least 1.
    Type: Application
    Filed: September 4, 2009
    Publication date: February 4, 2010
    Applicant: CLARIANT PRODUKTE (DEUTSCHLAND) GMBH
    Inventors: Uwe FALK, Hendrik AHRENS, Klaus POELLMANN, Martin GLOS, Eckart KRAEMER
  • Patent number: 7622157
    Abstract: The invention relates to the use of a polysilazane solution which comprises a polysilazane of the formula 1 where n has been adjusted so that the polysilazane has a number-average molar mass of from 150 to 150 000 g/mol, and also comprises a solvent and a catalyst, as a primer for the coating of a surface with fluorosilanes or with fluorine-containing condensates.
    Type: Grant
    Filed: April 8, 2004
    Date of Patent: November 24, 2009
    Assignee: Clariant Produkte (Deutschland) GmbH
    Inventors: Uwe Falk, Hendrik Ahrens
  • Patent number: 7605224
    Abstract: Disclosed are copolymers made of alkylene oxides and glycidyl ethers according to formula (I) in which R1 is hydrogen or a C1-C4-alkyl radical, R2 and R4 are an alkyl or aryl radical having 1 to 30 carbon atoms, and R3 is an alkyl or aryl radical having 1 to 50 carbon atoms, which may also contain heteroatoms. A is an alkylene unit having 2 to 6 carbon atoms. In formula (1), x is a number from 0 to 10, y is a number from 0 to 10, n is a number from 0 to 100, k is a number from 1 to 100, R5 is an acid group or hydrogen, and m is a number from 1 to 500, with the proviso that (y+n) must be at least 1.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: October 20, 2009
    Assignee: Clariant Produkte (Deutschland) GmbH
    Inventors: Uwe Falk, Hendrik Ahrens, Klaus Poellmann, Martin Glos, Eckart Kraemer
  • Publication number: 20090023817
    Abstract: The present invention provides aqueous compositions comprising, as well as water, 75% to 90% by weight of alkyl polyethylene glycol ether sulfates which are a mixture of compounds of formula (1) R1—O—(CH2—CH2—O)x—SO3M??(1) where R1 is a branched alkyl or alkenyl group having 8 to 14 carbon atoms and at least one tertiary carbon atom, x is from 3 to 15, M is an alkali metal ion or an ammonium ion, with compounds of formula (2) R2—O—(CH2—CH2—O)y—SO3M???(2) where R2 is a linear alkyl or alkenyl group having 8 to 14 carbon atoms, y is from 3 to 15, M? is an alkali metal ion or an ammonium ion, wherein the mixing ratio of compounds of formulae (1) and (2) is chosen such that the compounds of formula (1) comprise at least 10% by weight and at most 99% by weight of the total amount of compounds of formulae (1) and (2).
    Type: Application
    Filed: July 10, 2008
    Publication date: January 22, 2009
    Inventors: Hendrik Ahrens, Guillermo Maier, Klaus Raab
  • Publication number: 20080227917
    Abstract: Disclosed are copolymers made of alkylene oxides and glycidyl ethers according to formula (I) in which R1 is hydrogen or a C1-C4-alkyl radical, R2 and R4 are an alkyl or aryl radical having 1 to 30 carbon atoms, and R3 is an alkyl or aryl radical having 1 to 50 carbon atoms, which may also contain heteroatoms. A is an alkylene unit having 2 to 6 carbon atoms. In formula (1), x is a number from 0 to 10, y is a number from 0 to 10, n is a number from 0 to 100, k is a number from 1 to 100, R5 is an acid group or hydrogen, and m is a number from 1 to 500, with the proviso that (y+n) must be at least 1.
    Type: Application
    Filed: May 14, 2008
    Publication date: September 18, 2008
    Inventors: Uwe Falk, Hendrik Ahrens, Klaus Poellmann, Martin Glos, Eckart Kraemer
  • Patent number: 7388068
    Abstract: Disclosed are copolymers made of alkylene oxides and glycidyl ethers according to formula (I) in which R1 is hydrogen or a C1-C4-alkyl radical, R2 and R4 are an alkyl or aryl radical having 1 to 30 carbon atoms, and R3 is an alkyl or aryl radical having 1 to 50 carbon atoms, which may also contain heteroatoms. A is an alkylene unit having 2 to 6 carbon atoms. In formula (1), x is a number from 0 to 10, y is a number from 0 to 10, n is a number from 0 to 100, k is a number from 1 to 100, C is an acid group or hydrogen, and m is a number from 1 to 500, with the proviso that (y+n) must be at least 1.
    Type: Grant
    Filed: July 13, 2003
    Date of Patent: June 17, 2008
    Assignee: Clariant Produkte (Deutschland) GmbH
    Inventors: Uwe Falk, Hendrik Ahrens, Klaus Poellmann, Martin Glos, Eckart Kraemer
  • Publication number: 20070261596
    Abstract: An aqueous pigment preparation containing: (A) at least one organic and/or inorganic pigment; (B) at least one water-soluble or water-dispersible non-ionic oligoester or polyester, which is obtained by the polycondensation of dicarboxylic acid and glycol components, said oligoester or polyester comprising I) one or more aromatic dicarboxylic acids, their esters or anhydrides, II) C2-C8 alkenediols, III) poly (C1-C4-alkene)glycols and/or methylpoly(C2-C4 alkene)glycols, IV) optional water-soluble addition products of alkene oxide on C1-C24 alcohols, C6-C18 alkylphenols or on C8-C24 alkylamines and V) one or more optional polyols; (C) optional additional dispersants and surfactants that are conventionally used to produce aqueous pigment dispersions; (D) optional additional additives that are conventionally used to produce aqueous pigment dispersions; and (E) water.
    Type: Application
    Filed: September 29, 2005
    Publication date: November 15, 2007
    Inventors: Bjoern Fechner, Frank-Peter Lang, Alexander Lerch, Uwe Bechtold, Hendrik Ahrens
  • Publication number: 20060247347
    Abstract: Aqueous pigment formulations comprise (A) at least one organic and/or inorganic pigment, (B) at least one polymeric dispersant of the formula I, where R1 is aliphatic, linear or branched hydrocarbyl having 8 to 30 carbon atoms or a hydrogen atom, R2 is aliphatic, linear or branched hydrocarbyl having 8 to 30 carbon atoms or a hydrogen atom, R3 is hydrocarbyl having 1 to 6 carbon atoms, n is an integer of not less than 3, x is an integer from 1 to 150, and M is a cation, with the proviso that one of R1 and R2 is hydrogen.
    Type: Application
    Filed: April 21, 2006
    Publication date: November 2, 2006
    Inventors: Martin Glos, Hendrik Ahrens
  • Publication number: 20060246221
    Abstract: The invention relates to the use of a polysilazane solution which comprises a polysilazane of the formula 1 where n has been adjusted so that the polysilazane has a number-average molar mass of from 150 to 150 000 g/mol, and also comprises a solvent and a catalyst, as a primer for the coating of a surface with fluorosilanes or with fluorine-containing condensates.
    Type: Application
    Filed: April 8, 2004
    Publication date: November 2, 2006
    Inventors: Uwe Falk, Hendrik Ahrens
  • Publication number: 20050261457
    Abstract: Disclosed are copolymers made of alkylene oxides and glycidyl ethers according to formula (I) in which R1 is hydrogen or a C1-C4-alkyl radical, R2 and R4 are an alkyl or aryl radical having 1 to 30 carbon atoms, and R3 is an alkyl or aryl radical having 1 to 50 carbon atoms, which may also contain heteroatoms. A is an alkylene unit having 2 to 6 carbon atoms. In formula (1), x is a number from 0 to 10, y is a number from 0 to 10, n is a number from 0 to 100, k is a number from 1 to 100, C is an acid group or hydrogen, and m is a number from 1 to 500, with the proviso that (y+n) must be at least 1.
    Type: Application
    Filed: July 13, 2003
    Publication date: November 24, 2005
    Inventors: Uwe Falk, Hendrik Ahrens, Klaus Hoechster Poellmann, Martin Glos, Eckart Kraemer
  • Publication number: 20040143057
    Abstract: The invention relates to the use of esters of polyglycerine with 2 to 100 glycerine units and at least one carboxylic acid with 6 to 42 carbon atoms as emulsifier in emulsion polymerisation.
    Type: Application
    Filed: November 19, 2003
    Publication date: July 22, 2004
    Inventors: Hendrik Ahrens, Uwe Falk
  • Publication number: 20040077774
    Abstract: The invention relates to the use of compounds of formula (1) as emulsifiers in emulsion polymerisation. In said formula. R1 represents an alkyl or alkenyl group with between 1 and 8 carbon atoms, or a phenyl, methylphenyl or dimethylphenyl group, R2 represents a methyl or ethyl group, R3 represents a hydrogen atom or a methyl group, x is a number from 1 to 50 and y is a number from 1 to 500.
    Type: Application
    Filed: August 7, 2003
    Publication date: April 22, 2004
    Inventors: Hendrik Ahrens, Uwe Falk
  • Publication number: 20030124261
    Abstract: Olefinically unsaturated ether carboxylic acids comprising compounds of the formula (1) 1
    Type: Application
    Filed: December 18, 2002
    Publication date: July 3, 2003
    Applicant: Clariant GmbH
    Inventors: Uwe Falk, Klaus Poellmann, Hendrik Ahrens
  • Publication number: 20020103290
    Abstract: The present invention relates to aqueous dispersions preparable by polymerization of an olefinically unsaturated, water-insoluble compound in the presence of a water-soluble allyl or vinyl ether of the formula 1 1
    Type: Application
    Filed: March 22, 2002
    Publication date: August 1, 2002
    Applicant: Clariant GmbH
    Inventors: Klaus Pollmann, Hendrik Ahrens, Achim Stankowiak
  • Patent number: 6391923
    Abstract: The present invention relates to aqueous dispersions preparable by polymerization of an olefinically unsaturated, water-insoluble compound in the presence of a water-soluble allyl or vinyl ether of the formula 1 in which b is 0 or 1 n is 0 or 1 k is an integer from 1 to 20, X is O or N[(A—O)m—R] A is C2-C4-alkylene m is an integer from 5 to 900, and R is H or C1-C4-alkyl, and in which A is not exclusively C3- or C4-alkylene, by mixing the olefinically unsaturated water-insoluble compound with the water-soluble allyl and vinyl ether in water, and triggering the polymerization by a free-radical initiator.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: May 21, 2002
    Assignee: Clariant GmbH
    Inventors: Klaus Pöllmann, Hendrik Ahrens, Achim Stankowiak