Patents by Inventor Wilfried Paulen

Wilfried Paulen 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).

  • Aqueous binders based on polybutadiene
    Patent number: 6353060
    Abstract: A water-soluble or water-dispersible binder based on polybutadienes which is modified with at least 5% by weight of maleic anhydride and wherein at least 30% of the anhydride groups are present as imide groups from reaction with an amino carboxylic acid.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: March 5, 2002
    Assignee: Degussa AG
    Inventors: Wilfried Paulen, Rainer Elm, Werner Freitag, Martina Ortelt, Wolfgang Sasse, Karin Sokolowski
  • Aqueous binders based on polybutadiene
    Patent number: 6218477
    Abstract: A water-soluble or water-dispersible binder based on polybutadienes which is modified with at least 5% by weight of maleic anhydride and wherein at least 30% of the anhydride groups are present as imide groups from reaction with an amino carboxylic acid.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: April 17, 2001
    Assignee: Huels Aktiengesellschaft
    Inventors: Wilfried Paulen, Rainer Elm, Werner Freitag, Martina Ortelt, Wolfgang Sasse, Karin Sokolowski
  • Isophorone urethane polyamine, a process for its preparation and its use
    Patent number: 5459204
    Abstract: The invention relates to a new polyamine of the following composition: ##STR1## wherein 1.gtoreq.n.gtoreq.6, R represents the hydrocarbon radical of a (cyclo)aliphatic, araliphatic or aromatic diisocyanate having 6-20 C atoms or a trimer thereof andwherein when 2.gtoreq.n.gtoreq.6,R.sup.1 represents an n-valent organic radical such as is formed by removal of n OH groups from a polyhydroxy compound which optionally contains ether oxygen atoms and has an average molecular weight Mn of between 60 and 5,000; andwhen n=1,R.sup.1 represents ##STR2## It furthermore relates to a process for the preparation of a polyamine, in which certain diisocyanates, adducts of diisocyanates with polyols or trimers thereof are reacted with the Schiff base of the following composition: ##STR3## wherein R.sup.2 =H or a branched or unbranched C.sub.1-14 -alkyl radical and R.sup.3 =a branched or unbranched C.sub.1-14 -alkyl radical, an C.sub.1-14 alkyl-substituted phenyl radical or a C.sub.1 -C.sub.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: October 17, 1995
    Assignee: Huels Aktiengesellschaft
    Inventors: Rainer Lomoelder, Wilfried Paulen, Felix Schmitt, Elmar Wolf
  • Azomethine, a process for the preparation thereof and also its use
    Patent number: 5449827
    Abstract: The invention relates to an azomethine of the following composition: ##STR1## in which R.sup.1 is H or a branched or unbranched C.sub.1-14 -alkyl radical, andR.sup.2 is a branched or unbranched C.sub.1-14 -alkyl radical, an C.sub.1-14 alkyl-substituted phenyl radical or a C.sub.1 -C.sub.8 -(cyclo)-alkyl radical.It further relates to a process for preparing an azomethine, in which ##STR2## is reacted with the corresponding carbonyl compounds ##STR3## The invention also relates to the use of the azomethines for the preparation of certain polyazomethines (poly-Schiff bases), where the azomethines are reacted with diisocyanates or their adducts with polyols or their trimers, and to polyazomethine compounds.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: September 12, 1995
    Assignee: Huels Aktiengesellschaft
    Inventors: Rainer Lomoelder, Wilfried Paulen, Felix Schmitt, Elmar Wolf