Patents by Inventor Rolf-Dieter Kahl

Rolf-Dieter Kahl 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: 8519196
    Abstract: The alkoxylate mixtures comprise alkoxylates of the formula (I) C5H11CH(C3H7)CH2O(B)p(A)n(B)m(A)qH??(I) where A is ethyleneoxy, B, in each case independently, are C3-10-alkyleneoxy or mixtures thereof, groups A and B being present in the form of blocks in the stated sequence, p is a number from 0 to 10, n is a number greater than 0 to 20, m is a number greater than 0 to 20, q is a number greater than 0 to 10, p+n+m+q is at least 1, from 70 to 99% by weight of alkoxylates A1, in which C5H11 is n-C5H11, and from 1 to 30% by weight of alkoxylates A2, in which C5H11 is C2H5CH(CH3)CH2 and/or CH3CH(CH3)CH2CH2, being present in the mixture.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: August 27, 2013
    Assignee: BASF Aktiengesellschaft
    Inventors: Markus Klumpe, Juergen Tropsch, Rolf-Dieter Kahl, Roland Boehn, Susanne Stutz, Ralf Noerenberg
  • Patent number: 8492326
    Abstract: The present invention relates to the use of an alkoxylate based on 2-propylheptylamine which has been alkoxylated with ethylene oxide, propylene oxide, butylene oxide, pentylene oxide, styrene oxide, cyclohexylene oxide and/or decylene oxide, and/or its quaternized derivative in cleaning compositions, as emulsifier, in the manufacture of fibers, for leather treatment, in printing inks, in formulations for construction chemistry or in formulations for flotation. Furthermore, the present invention relates to a mixture comprising at least one of the specified alkoxylates and also at least one surface-active substance and use thereof.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: July 23, 2013
    Assignee: BASF SE
    Inventors: Paul Klingelhoefer, Juergen Tropsch, Rolf-Dieter Kahl, Andreas Senf
  • Publication number: 20110315910
    Abstract: The present invention relates to the use of an alkoxylate based on 2-propylheptylamine which has been alkoxylated with ethylene oxide, propylene oxide, butylene oxide, pentylene oxide, styrene oxide, cyclohexylene oxide and/or decylene oxide, and/or its quaternized derivative in cleaning compositions, as emulsifier, in the manufacture of fibers, for leather treatment, in printing inks, in formulations for construction chemistry or in formulations for flotation. Furthermore, the present invention relates to a mixture comprising at least one of the specified alkoxylates and also at least one surface-active substance and use thereof.
    Type: Application
    Filed: June 27, 2011
    Publication date: December 29, 2011
    Applicant: BASF SE
    Inventors: Paul KLINGELHOEFER, Jürgen Tropsch, Rolf-Dieter Kahl, Andreas Senf
  • Publication number: 20100305018
    Abstract: The present invention relates to low-foam surfactant mixtures comprising esters of the general formula (I) and alcohols thereof of the general formula (Ia) where R is a branched or unbranched alkyl radical having from 8 to 22 carbon atoms; Ra, R1 are each independently hydrogen or a branched or unbranched alkyl radical having from 1 to 5 carbon atoms; R2 is a branched or unbranched alkyl radical having from 5 to 17 carbon atoms; l, n are each independently from 1 to 5 and m is from 38 to 70, and where the ratio of the molar amounts of the esters (I) to the alcohols (Ia) is at least 17:3. The invention further relates to the process for preparing them and to their use and to washing and cleaning composition formulations comprising them.
    Type: Application
    Filed: August 28, 2008
    Publication date: December 2, 2010
    Applicant: BASF SE
    Inventors: Christian Bittner, Juergen Tropsch, Rolf-Dieter Kahl, Michael Stoesser, Markus Kummeter
  • Patent number: 5635554
    Abstract: Low viscosity mixtures of(I) from 40 to 97.5% by weight of amphiphilic nonionic graft copolymers comprising, in copolymerized form,(a) at least 20% by weight of polyalkylene oxide units or polyvinylpyrrolidone units as hydrophilic part of the molecule and(b) at least 40% by weight of vinyl ester and/or (meth)acrylic ester units as hydrophobic part of the molecule, and(II) from 2.5 to 60% by weight of at least one viscosity-reducing additive selected from the group consisting of polyalkylene glycols, alkoxylated alcohols, alkoxylated alkylphenols, alkoxylated amines and hydroxy compounds having from 1 to 4 OH groups and from 2 to 10 carbon atoms, the molecular mass M.sub.
    Type: Grant
    Filed: July 12, 1995
    Date of Patent: June 3, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Boeckh, Hans-Peter Seelmann-Eggebert, Hans-Ulrich Jager, Rolf-Dieter Kahl, Gunnar Schornick