Patents by Inventor Robert H. Rohrbaugh

Robert H. Rohrbaugh 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).

  • Zwitterionic polyetherpolyamines and process for their production
    Patent number: 6703523
    Abstract: A zwitterionic polyetherpolyamine comprising a linear or branched polyetherpolyamine backbone having 2 to 10 tertiary amino nitrogen atoms and a molecular weight of from 100 to 800, at least one tertiary amine end group of the polyetherpolyamine backbone contains two groups having the formula wherein A means an ethylene oxide unit, a propylene oxide unit, a unit of butylene oxides and a tetrahydrofuran unit, n is a number of from 1 to 50, X is an anionic group, with the proviso that in formula II one X may also be hydrogen and M is hydrogen, alkali metal or ammonium, or contains one group of formula I or II and one group selected from radicals consisting of C1- to C22-alkyl and C7- to c22-aralkyl, the meaning of A and n is the same as in formula I or II, said zwitterionic polyetherpolyamine having a molecular weight up to 9,000 and optionally containing up to 100% of the nitrogen atoms quaternized, and a process for the production of zwitterionic polyetherpolyamines by
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: March 9, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Boeckh, Oliver Borzyk, Michael Ehle, Ralf Nörenberg, Eugene P. Gosselink, Jeffrey S. DuPont, Robert H. Rohrbaugh, Kenneth N. Price, Randall S. Deinhammer
  • Zwitterionic polyamines and process for their production
    Patent number: 6673890
    Abstract: A zwitterionic polyamine comprising a linear or branched hydrophobic polyamine backbone having 2 to 10 tertiary amino nitrogen atoms and a spacer between two tertiary nitrogen atoms wherein the spacer is, for example selected from C8-C16-alkylene, C5-C15-cyloalkylene, wherein in formula (IV) R═C1- to C22-alkyl or C7-C22-aralkyl and n=3 to 6, at least one tertiary amine end group of the polyamine backbone contains two groups having formula (V) or (VI), wherein A means an ethylene oxide unit, a propylene oxide unit, a unit of butylene oxides and a tetrahydrofuran unit, n is a number of from 1 to 50, X is an anionic group such as —SO3M, with the proviso that in formula (VI) one X may also be hydrogen and M is hydrogen, alkai metal or ammonium, or contains one group of formula (V) or (VI) and one group selected from radicals consisting of formula (VII), C1- to C22-alkyl and C7-C22-aralkyl the meaning of A and n is the same as in formula (V) or (VI), said zwitterionic polyetherpolyamine having a
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: January 6, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Dieter Boeckh, Oliver Borzyk, Michael Ehle, Ralf Nöerenberg, Eugene P. Gosselink, Jeffrey S. DuPont, Robert H. Rohrbaugh, Kenneth N. Price, Randall S. Deinhammer
  • Laundry detergent compositions comprising hydrophobically modified polyamines
    Publication number: 20030228998
    Abstract: The present invention relates to hydrophobically modified polyamines and laundry detergent compositions which comprise said polyamines, said compositions comprising:
    Type: Application
    Filed: August 30, 2002
    Publication date: December 11, 2003
    Applicant: The Procter & Gamble Company
    Inventors: Jeffrey S. Dupont, Eugene P. Gosselink, Kenneth N. Price, Robert H. Rohrbaugh