Patents by Inventor Juergen Lasowski

Juergen Lasowski 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 of demulsifying crude oil and water mixtures with copolymers of acrylates or methacrylates and hydrophilic commonomers
    Patent number: 5472617
    Abstract: A method of demulsifying a crude oil and water composition involves adding demulsifiers made from acrylic acid/methacrylic acid copolymerized with hydrophilic monomers.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: December 5, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Barthold, Richard Baur, Stevano Crema, Knut Oppenlaender, Juergen Lasowski
  • Alkoxylated amido-containing polyamines and their use for breaking oil-in-water and water-in-oil emulsions
    Patent number: 4935162
    Abstract: Alkoxylated amido-containing polyamines which are suitable as oil demulsifiers are obtainable by condensing a dicarboxylic acid of 3 to 20 carbon atoms or one of its functional derivatives with a polyalkylenepolyamine having 2 or more carbon atoms and 2 or more amino groups and reacting the product with a total of from 1 to 200 moles/mole of ethylene oxide and/or propylene oxide and/or 1,2-butylene oxide.
    Type: Grant
    Filed: October 16, 1987
    Date of Patent: June 19, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Barthold, Richard Baur, Rolf Fikentscher, Juergen Lasowski, Knut Oppenlaender
  • Polyethers obtainable by reacting alkylolated bis-(4-hydroxyphenyl)-methanes with polyalkylene oxides, and their use as oil demulsifiers
    Patent number: 4814394
    Abstract: Polyethers with are suitable as oil demulsifiers are obtainable by reacting(A) a polyalkylene oxide obtained from ethylene oxide and propylene oxide and containing in total from 5 to 200 alkylene oxide units with(B) an alkylolation product of a low molecular weight aldehyde and a bis-(4-hydroxyphenyl)-methane of the general formula II ##STR1## wherein R.sup.1 and R.sup.2 may be identical or different and are each hydrogen, low molecular weight alkyl, phenyl, carboxyl or low molecular weight alkoxycarbonyl, the molar reaction ratio of the compound of the formula II to the alkylolating aldehyde being from 1:1 to 1:4, at from 100.degree. to 180.degree. C. in the presence of an acidic catalyst with removal of the water of reaction, the weight ratio of A to B being from 5:1 to 1:3.
    Type: Grant
    Filed: April 28, 1987
    Date of Patent: March 21, 1989
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Barthold, Knut Oppenlaender, Juergen Lasowski, Richard Baur