Patents by Inventor Rolf Deitz

Rolf Deitz 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).

  • Fiber-reactive triazinyl dyes having a monoazo moiety with a 2,4-diaminobenzene sulfonic acid coupling component and a second chromophore
    Patent number: 5484899
    Abstract: The invention relates to compounds of the formula ##STR1## in which the variables are as defined in the claims. The compounds are suitable as dyes, in particular for dyeing and printing cellulosic fibre materials, and produce dyeings and prints with good all-round fastness properties.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: January 16, 1996
    Assignee: Ciba-Geigy Corporation
    Inventors: Rolf Deitz, Athanassios Tzikas
  • Bisreactive azo dyes containing a pyridine coupling component
    Patent number: 5391717
    Abstract: Reactive dyes of the formula ##STR1## in which D, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are as defined in claim 1, are particularly suitable for dyeing or printing cellulosic fiber materials or naturally occurring or synthetic polyamide fiber materials with a high tinctorial yield, and produce dyeings and prints having good fastness properties.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: February 21, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Athanassios Tzikas, Rolf Deitz
  • Process for the preparation of amino-fluoro-s-triazine dyes by reaction of cyanuric fluoride with an amino dye and an amide in one operation
    Patent number: 4614818
    Abstract: A process for the preparation of dyes of the formula ##STR1## in which D is a dye radical and R.sub.1 and R.sub.2 independently of one another is hydrogen or C.sub.1-4 -alkyl, which comprises reacting cyanuric fluoride of the formula ##STR2## simultaneously with a dye of the formula ##STR3## and with an ammonium salt of an amine of the formulaH.sub.2 N--R.sub.2 (4)in a neutral to alkaline medium, to give dyes of the formula (1) as single compounds in good yields in one operation. The novel process has the advantage of being able to be carried out as a "one-pot process" in a closed reaction vessel so that the apparatus is simple and immission by cyanuric fluoride is excluded.
    Type: Grant
    Filed: January 18, 1983
    Date of Patent: September 30, 1986
    Assignee: Ciba Geigy Corporation
    Inventors: Rolf Deitz, Herbert Seiler