Patents by Inventor Josef Hetzenegger

Josef Hetzenegger 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).

  • Preparation of Pigment Red 149
    Patent number: 10287435
    Abstract: The invention provides a process for preparing N,N?-di(3?,5?-dimethylphenyl)perylene bis(dicarboximide), and other pigments having modified properties, by reaction of perylene-3,4,9,10-tetracarboxylic dianhydride with 3,5-dimethylaniline, or a mixture of 3,5-dimethyl aniline and at least one other primary amine, in the presence of a secondary amine or tertiary amine as catalyst, wherein the reaction occurs in an aqueous reaction medium and in the presence of added seed crystals of N,N?-di(3?,5?-dimethylphenyl) perylenebis(dicarboximide), such that the aqueous medium is present at the beginning of the reaction.
    Type: Grant
    Filed: February 18, 2008
    Date of Patent: May 14, 2019
    Assignee: BASF SE
    Inventors: Heinrich Kowarsch, Josef Hetzenegger, Andreas Stohr, Hans-Joachim Uschmann
  • PREPARATION OF PIGMENT RED 149
    Publication number: 20100063288
    Abstract: The invention provides a process for preparing N,N?-di(3?,5?-dimethylphenyl) perylenebis(dicarboximide) by reaction of perylene-3,4,9,10-tetracarboxylic dianhydride with 3,5-dimethylaniline in the presence of a secondary or tertiary amine as catalyst, which comprises effecting the reaction in an aqueous reaction medium and in the presence of added seed crystals of N,N?-di(3?,5?-dimethylphenyl) perylenebis(dicarboximide).
    Type: Application
    Filed: February 18, 2008
    Publication date: March 11, 2010
    Applicant: BASF SE
    Inventors: Heinrich Kowarsch, Josef Hetzenegger, Andreas Stohr, Hans-Joachim Uschmann
  • Chlorinated copper phthalocyanine pigments
    Patent number: 6794504
    Abstract: Incipiently chlorinated copper phthalocyanine pigments having a chlorine content of from 10 to 40% by weight and a dispersion harshness ≦10 in LDPE are useful for coloring plastics.
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: September 21, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Ingo Klopp, Josef Hetzenegger, Peter Böttcher
  • Chlorinated copper phthalocyanine pigments
    Publication number: 20030088091
    Abstract: Incipiently chlorinated copper phthalocyanine pigments having a chlorine content of from 10 to 40% by weight and a dispersion harshness ≦10 in LDPE are useful for coloring plastics.
    Type: Application
    Filed: September 27, 2002
    Publication date: May 8, 2003
    Inventors: Ingo Klopp, Josef Hetzenegger, Peter Bottcher
  • Pigment preparation with perylene derivatives as dispersants
    Patent number: 5472494
    Abstract: Pigment preparations contain(a) at least one organic pigment;(b) at least one perylene derivative of the general formula I ##STR1## where A is --O--, --CH.sub.2 -- or --NR.sup.1 --;B.sup.1 and B.sup.2 are independently of each other a chemical bond, --O--, --CH.sub.2 --, --NR.sup.2 --, --S--, --CO--, --SO.sub.2 -- or --SO.sub.2 --NH--;L.sup.1 and L.sup.2 are independently of each other a chemical bond, phenylene or C.sub.1 -C.sub.8 -alkylene;X is --SO.sub.3.sup..crclbar. Ka.sup..sym. ;Y is --CO.sub.2 Ka.sup..sym. ;Z is chlorine or bromine;m is from 0 to 4;n is 0 or 1 and (m+n) is from 1 to 4; andp is from 0 to 4;as dispersant;(c) if desired further customary pigment preparation additives.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: December 5, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Josef Hetzenegger, Georg Henning, Peter Erk