Patents by Inventor Renate Wustefeld

Renate Wustefeld 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).

  • Method for producing superabsorbers based on renewable raw materials
    Patent number: 9822197
    Abstract: A process for producing water-absorbing polymer particles, comprising the steps of thermal cracking of bionaphtha in the presence of steam, removing propene and at least some of the propane, gas phase oxidation to give acrylic acid and polymerization to give water-absorbing polymer particles.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: November 21, 2017
    Assignee: BASF SE
    Inventors: Klaus Dieter Hörner, Jürgen Schröder, Rüdiger Funk, Renate Wüstefeld
  • METHOD FOR PRODUCING SUPERABSORBERS BASED ON RENEWABLE RAW MATERIALS
    Publication number: 20150299347
    Abstract: A process for producing water-absorbing polymer particles, comprising the steps of thermal cracking of bionaphtha in the presence of steam, removing propene and at least some of the propane, gas phase oxidation to give acrylic acid and polymerization to give water-absorbing polymer particles.
    Type: Application
    Filed: November 18, 2013
    Publication date: October 22, 2015
    Applicant: BASF SE
    Inventors: Klaus Dieter Hörner, Jürgen Schröder, Rüdiger Funk, Renate Wüstefeld
  • Pulverulent adhesive
    Patent number: 6084018
    Abstract: Pulverulent adhesives comprise a redispersible polymer powder based on a polymer which can be obtained in the presence of a protective colloid, and additionally comprise a filler, an alkaline additive and, if desired, an emulsifier and other additives.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: July 4, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerald Wildburg, Renate Wustefeld, Heinrich Sack, Peter Fickeisen
  • Aqueous dispersions comprising a polyurethane, a polyisocyanate and a tertiary alkanolamine
    Patent number: 5852105
    Abstract: Aqueous two-component dispersions comprising a) a polyurethane carrying anionic groups which make the polyurethane dispersible in water (component a), b) from 0.04 to 1.5 mol of NCO groups in the form of a water-emulsifiable polyisocyanate (component b) per kg of component (a), and c) from 0.05 to 40 mol of tertiary amino groups in the form of a tertiary alkanolamine (component c) per mole of NCO groups in the form of component (b).
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: December 22, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Renate Wustefeld, Ulrike Licht
  • Aqueous polyurethane dispersions having latent crosslinking properties
    Patent number: 5840823
    Abstract: Aqueous polyurethane dispersions having latent crosslinking properties containI) a disperse phase (P.I), containingIa) a polyurethane (PUR.Ia) which, in addition to groups which impart water dispersibility to the polyurethane, carries groups which have a C--C double bond and in which the double bond is activated by a carbonyl group bonded directly therewith, orIb) a mixture ofa polyurethane (PUR.Ib) which carries groups which impart water dispersibility to the polyurethane but not groups which have a C--C double bond and in which the double bond is activated by a carbonyl group bonded directly therewith anda compound (V.I) which differs from the polyurethanes PUR.Ia and PUR.Ib, and which carries groups which have a C--C double bond and in which the double bond is activated by a carbonyl group bonded directly therewith andII) a disperse phase (P.II) containing a compound which differs from the compounds (PUR.Ia), (PUR.Ib) and (V.
    Type: Grant
    Filed: February 25, 1997
    Date of Patent: November 24, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Ulrike Licht, Nicolas Kokel, Karl Haberle, Renate Wustefeld