Patents by Inventor Dieter Trachsler

Dieter Trachsler 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).

  • Hardenable epoxide resin mixtures containing cyanolactams
    Patent number: 4384084
    Abstract: Hardenable mixtures which contain a polyepoxide compound with, on average, more than one epoxide group in the molecule, and a hardener of the formula I ##STR1## The symbol n is an integer from 3 to 5. The methylene carbon atoms can be substituted by one or two methyl or ethyl groups.The hardenable mixtures can be used, for example, in the fields of the protection of surfaces or of adhesives technology.
    Type: Grant
    Filed: February 10, 1982
    Date of Patent: May 17, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Friedrich Lohse, Dieter Trachsler, Roland Moser
  • Mixture containing N-cyanolactam for the preparation of nitrogen-containing polyadducts
    Patent number: 4383107
    Abstract: A mixture for the preparation of novel crosslinked nitrogen-containing polyadducts, which comprises(a) an N-cyanolactam of the formula I or II ##STR1## and (b) a monomeric or oligomeric organic compound having at least 2 C atoms and at least 2 amino groups or at least 1 amino group and 1 hydroxyl group.The curable mixtures of components (a) and (b) and, if desired, a monoamino compound are suitable for use as casting resins or adhesives, or for the preparation of foams and coatings.The symbols are each as defined in claim 1.
    Type: Grant
    Filed: August 17, 1981
    Date of Patent: May 10, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Friedrich Lohse, Dieter Trachsler, Claude Jeannerat
  • Mixtures for the preparation of nitrogen-containing polyadducts
    Patent number: 4368317
    Abstract: A mixture for the preparation of novel cross-linked nitrogen-containing polyadducts, which contains(a) a N-cyanolactam of the formula I or II ##STR1## and (b) a monomeric or oligomeric organic compound having not less than 2 C atoms and not less than 2 hydroxyl groups.The mixture, with or without addition of a monohydroxy compound, can be used as a casting resin or adhesive, or for the production of foams or coatings.The symbols in the formula are all as defined in claim 1.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: January 11, 1983
    Assignee: Ciba-Geigy Corporation
    Inventors: Friedrich Lohse, Dieter Trachsler
  • Process for the production of N-cyanolactams
    Patent number: 4356121
    Abstract: The invention provides a process for the production of N-cyanolactams of the formula I ##STR1## which process comprises reacting a compound of the formula II ##STR2## in the presence of an inorganic hydrogen halide acceptor, with cyanamide or with a salt thereof.The N-cyanolactams obtained by the process of the invention are valuable intermediates for the production of polyadducts, or they can be used as activators in polymerization reactions.The symbols in formulae (I) and (II) are as defined in claim 1.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: October 26, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Dieter Trachsler, Friedrich Lohse