Patents by Inventor Horst Olaf Brucker

Horst Olaf Brucker 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).

  • Patent number: 6423132
    Abstract: The present invention is drawn to pigment granules having a particle size from 0.5 to 4 mm, which consist of at least 90% by weight of at least one organic pigment selected from the group consisting of diketopyrrolopyrrole, quinacridone, perylene, indanthrone, flavanthrone, isoindolinone or amino- anthraquinone pigments and from 0 to 10% by weight of a binder having from 2 to 7 mol of carboxyl groups per 1000 g and from 0 to 5% by weight of a neutral emulsifier. The binder and the emulsifier together do not represent more than 10% by weight of the oveerall amount of pigment granules. The pigment present in the pigment granules has a particle size of from 0.01 to &mgr;m.
    Type: Grant
    Filed: February 15, 2001
    Date of Patent: July 23, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Paolo Balliello, Horst Olaf Brücker
  • Publication number: 20010006034
    Abstract: The invention relates to a process for preparing organic pigment granules with a particle size from 0.5 to 4 mm, which consist of at least 90% by weight of at least one organic pigment with a particle size from 0.
    Type: Application
    Filed: February 15, 2001
    Publication date: July 5, 2001
    Inventors: Paolo Balliello, Horst Olaf Brucker
  • Patent number: 6241813
    Abstract: The invention relates to a process for preparing organic pigment granules with a particular particle size wherein an organic pigment with a particle size of 0.01 to 10 &mgr;m is mixed with water, a C1-C4alcohol, a C3-C8ketone or a mixture thereof, a binder and ammonia or a C1-C3amine and an emulsifier. This mixture is pressed in a continuously operating apparatus through one or more apertures each having a size of 0.2-5.0 mm2, the apparatus consisting of at least one conveying device and a shaping section comprising the apertures, and being constructed, and operated with a throughput, such that the pressure in its shaping section does not exceed 10 bar. The granulated product is then dried at a temperature of −50 to 200° C. at atmospheric pressure or under reduced pressure. The invention also relates to pigment granules prepared by the process of the invention, with a particle size of 0.5 to 4 mm, wherein the pigment present essentially has a particle size from 0.01 to 10&mgr;m.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: June 5, 2001
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Paolo Balliello, Horst Olaf Brücker