Patents by Inventor Adrianus Hendrikus Van Rooijen

Adrianus Hendrikus Van Rooijen 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).

  • Continuous process for preparing polymer based pigment preparations
    Patent number: 6720382
    Abstract: Preparing pigment preparations by mixing a dyestuff with a monomer and simultaneously polymerizing the monomers in an extruder at elevated temperatures, wherein the following steps are carried out: (A) introducing continuously into an extruder (a) from 40 to 90% by weight of a pigment, (b) from 60 to 10% by weight of a monomer or a monomer mixture, and (c) from 0.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: April 13, 2004
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Johannes Leugs, Harald Marinus Alexander Heere, Adrianus Hendrikus van Rooijen
  • Continuous process for preparing polymer based pigment preparations
    Publication number: 20030088015
    Abstract: Preparing pigment preparations by mixing a dyestuff with a monomer and simultaneously polymerizing the monomers in an extruder at elevated temperatures, wherein the following steps are carried out:
    Type: Application
    Filed: August 9, 2002
    Publication date: May 8, 2003
    Inventors: Johannes Leugs, Harald Marinus Alexander Heere, Adrianus Hendrikus Van Rooijen
  • Continuous process for preparing polymer based pigment preparations
    Publication number: 20020002236
    Abstract: Preparing pigment preparations by mixing a dyestuff with a monomer and simultaneously polymerizing the monomers in an extruder at elevated temperatures, wherein the following steps are carried out:
    Type: Application
    Filed: July 18, 2001
    Publication date: January 3, 2002
    Inventors: Johannes Leugs, Harald Marinus Alexander Heere, Adrianus Hendrikus Van Rooijen
  • Continuous process for preparing polymer based pigment preparations
    Patent number: 6288162
    Abstract: Preparing pigment preparations by mixing a dyestuff with a monomer and simultaneously polymerizing the monomers in an extruder at elevated temperatures, wherein the following steps are carried out: (A) introducing continuously into an extruder (a) from 40 to 90% by weight of a pigment, (b) from 60 to 10% by weight of a monomer or a monomer mixture, and (c) from 0.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: September 11, 2001
    Assignee: CIBA Specialty Chemicals Corp.
    Inventors: Johannes Leugs, Harald Marinus Alexander Heere, Adrianus Hendrikus Van Rooijen
  • CONTINUOUS PROCESS FOR PREPARING POLYMER BASED PIGMENT PREPARATIONS
    Publication number: 20010003129
    Abstract: Preparing pigment preparations by mixing a dyestuff with a monomer and simultaneously polymerizing the monomers in an extruder at elevated temperatures, wherein the following steps are carried out:
    Type: Application
    Filed: March 12, 1999
    Publication date: June 7, 2001
    Inventors: JOHANNES LEUGS, HARALD MARINUS ALEXANDER HEERE, ADRIANUS HENDRIKUS VAN ROOIJEN
  • Continuous process for preparing acrylate based pigment preparations
    Patent number: 6103795
    Abstract: Process for preparing pigment preparations by mixing a colored composition with monomers and simultaneously polymerizing the monomers in an extruder at elevated temperatures, whereby the following steps are carried out:(A) introducing continuously into an extruder(a) from 40 to 90% by weight of a pigment,(b) from 60 to 10% by weight of at least a monomer, selected from the group consisting of an acrylate and a methacrylate, whereby the amounts of pigment and monomer sum up to 100%, and, if desired,(c) from 0 to 10% by weight, based on the amount of component (b), of an initiator, and(B) mixing the components (a), (b), and, if desired, (c) therein, and(C) withdrawing continuously the obtained reaction mixture from the extruder, and a high molecular organic material pigmented with the pigment preparation.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: August 15, 2000
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Johannes Leugs, Johan Victor Marie Winteraeken, Gerben Pieter Algra, Maria Gerardus Legnardus Delamboy, Adrianus Hendrikus Van Rooijen
  • Continuous process for preparing acrylate based pigment preparations
    Patent number: 5905111
    Abstract: Process for preparing pigment preparations by mixing a colored composition with monomers and simultaneously polymerizing the monomers in an extruder at elevated temperatures, whereby the following steps are carried out:(A) introducing continuously into an extruder(a) from 40 to 90% by weight of a pigment,(b) from 60 to 10% by weight of at least a monomer, selected from the group consisting of an acrylate and a methacrylate, whereby the amounts of pigment and monomer sum up to 100%, and, if desired,(c) from 0 to 10% by weight, based on the amount of component (b), of an initiator, and(B) mixing the components (a), (b), and, if desired, (c) therein, and(C) withdrawing continuously the obtained reaction mixture from the extruder, and a high molecular organic material pigmented with the pigment preparation.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: May 18, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Johannes Leugs, Johan Victor Marie Winteraeken, Gerben Pieter Algra, Maria Gerardus Legnardus Delamboy, Adrianus Hendrikus Van Rooijen