Patents Assigned to Blankophor GmbH & Co. KG
  • Fluorescent whitening agents and mixtures thereof
    Patent number: 10787769
    Abstract: Novel fluorescent whitening agents, compositions or mixtures thereof with known fluorescent whitening agents, their preparation, and their use. The novel fluorescent whitening agents (FWAs) contain three structural subunits derived from 4,4?-diamino-2,2?-stilbenedisulfonic acid. The novel compounds and their mixtures with known FWAs show very good effectiveness as fluorescent whitening agents for cellulosic materials, in particular for paper.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: September 29, 2020
    Assignee: BLANKOPHOR GMBH & CO. KG
    Inventors: Marco Hafermann, Bernd Hauschel, Bernhard Hunke, Theo Lansing, Michael Kraemer, Robert Peekhaus
  • Use of Micronized Cellulose and Fluorescent Whitening Agent for Surface Treatment of Cellulosic Materials
    Publication number: 20160060814
    Abstract: A combination of micronized cellulose and fluorescent whitening agents for surface treatment of cellulosic sheet-formed materials, e.g. paper, board or cotton fabric, and to preparations including the micronized cellulose and the fluorescent whitening agents. The combination enables improved fluorescent whitening and optical brightening of the cellulosic materials.
    Type: Application
    Filed: April 28, 2014
    Publication date: March 3, 2016
    Applicant: Blankophor Gmbh & Co., KG
    Inventors: Bernd HAUSCHEL, Bernhard Hunke, Michael Kraemer, Gunter Klug
  • Fluorescent whitening agent compositions
    Patent number: 8920605
    Abstract: The invention relates to a composition suitable for optically whitening paper or board, wherein the composition contains specified bis-triazinylamino-stilbene fluorescent whitening agents with carboxylic acid and/or sulfonic acid groups. The composition can be used for whitening paper in the pulp, size press or by coating.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: December 30, 2014
    Assignee: Blankophor GmbH & Co. KG
    Inventors: Bernhard Hunke, Andrei Tauber, Michael Kraemer, Günter Klug
  • Disulfo-type fluorescent whitening agents
    Patent number: 8696867
    Abstract: Concentrated aqueous fluorescent whitening agent preparations are disclosed for optically whitening paper, wherein the preparation contains a specific disulfo-type fluorescent whitening agent.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: April 15, 2014
    Assignee: Blankophor GmbH & Co. KG
    Inventors: Bernhard Hunke, Andrei Tauber, Michael Kraemer, Guenter Klug, Theo Lansing, Marco Hafermann
  • Disulfo-type fluorescent whitening agent compositions
    Patent number: 8696868
    Abstract: Fluorescent whitening agent compositions include at least two specific disulfo-type fluorescent whitening agents for optically whitening paper or board.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: April 15, 2014
    Assignee: Blankophor GmbH & Co. KG
    Inventors: Bernhard Hunke, Andrei Tauber, Michael Kraemer, Guenter Klug
  • FLUORESCENT WHITENING AGENT COMPOSITIONS
    Publication number: 20140034258
    Abstract: The invention relates to a composition suitable for optically whitening paper or board, wherein the composition contains specified bis-triazinylamino-stilbene fluorescent whitening agents with carboxylic acid and/or sulfonic acid groups. The composition can be used for whitening paper in the pulp, size press or by coating.
    Type: Application
    Filed: March 22, 2012
    Publication date: February 6, 2014
    Applicant: BLANKOPHOR GMBH & CO.KG
    Inventors: Bernhard Hunke, Andrei Tauber, Michael Kraemer, Günter Klug
  • Fluorescent whitening agent compositions
    Patent number: 8608907
    Abstract: A composition suitable for paper brightening, wherein the composition contains one or more specified fluorescent whitening agents with taurine groups. The composition is used for whitening paper, in particular at the wet-end, in the size press or by coating.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: December 17, 2013
    Assignee: Blankophor GmbH & Co. KG
    Inventors: Bernhard Hunke, Michael Kraemer, Andrei Tauber, Günter Klug
  • COMPOSITION AND PROCESS FOR WHITENING PAPER
    Publication number: 20130126117
    Abstract: The invention relates to a composition suitable for surface treatment of paper, wherein the composition contains a specified fluorescent whitening agent with a combination of specific terminal groups, a salt of a bivalent cation, and a carrier. The composition is used for whitening paper, in particular in the size press.
    Type: Application
    Filed: July 14, 2011
    Publication date: May 23, 2013
    Applicant: BLANKOPHOR GMBH & CO. KG
    Inventors: Bernhard Hunke, Andrei Tauber, Michael Kraemer, Gunter Klug
  • Composition and process for whitening paper
    Patent number: 8354041
    Abstract: A composition suitable for surface treatment of paper, wherein the composition contains a specified fluorescent whitening agent with alkylsulfonic acid groups, a salt of a bivalent cation, and a carrier. The composition is used for whitening paper, in particular in the size press.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: January 15, 2013
    Assignee: Blankophor GmbH & Co. KG
    Inventors: Bernhard Hunke, Michael Kraemer, Andrei Tauber, Günter Klug
  • DISULFO-TYPE FLUORESCENT WHITENING AGENTS IN COATING APPLICATIONS
    Publication number: 20120214011
    Abstract: Disulfo-type fluorescent whitening agents for optically brightening coating slips contain a synthetic binder and a different synthetic co-binder. In addition, a coating slip and its use for preparing coated papers are disclosed.
    Type: Application
    Filed: September 17, 2010
    Publication date: August 23, 2012
    Applicant: BLANKOPHOR GMBH & CO. KG
    Inventors: Bernhard Hunke, Michael Kraemer, Andrei Tauber, Guenter Klug
  • DISULFO-TYPE FLUORESCENT WHITENING AGENTS
    Publication number: 20120211188
    Abstract: Concentrated aqueous fluorescent whitening agent preparations are disclosed for optically whitening paper, wherein the preparation contains a specific disulfo-type fluorescent whitening agent.
    Type: Application
    Filed: September 17, 2010
    Publication date: August 23, 2012
    Applicant: BLANKOPHOR GMBH & CO. KG
    Inventors: Bernhard Hunke, Andrei Tauber, Michael Kraemer, Guenter Klug, Theo Lansing, Marco Hafermann
  • DISULFO-TYPE FLUORESCENT WHITENING AGENT COMPOSITIONS
    Publication number: 20120199302
    Abstract: The present invention relates to fluorescent whitening agent compositions containing at least two specific disulfo-type fluorescent whitening agents for optically whitening paper or board.
    Type: Application
    Filed: September 17, 2010
    Publication date: August 9, 2012
    Applicant: BLANKOPHOR GMBH & CO. KG
    Inventors: Bernhard Hunke, Andrei Tauber, Michael Kraemer, Guenter Klug
  • COMPOSITION AND PROCESS FOR WHITENING PAPER
    Publication number: 20110126996
    Abstract: The invention relates to a composition suitable for surface treatment of paper, wherein the composition contains a specified fluorescent whitening agent with alkylsulfonic acid groups, a salt of a bivalent cation, and a carrier. The composition is used for whitening paper, in particular in the size press.
    Type: Application
    Filed: June 10, 2009
    Publication date: June 2, 2011
    Applicant: BLANKOPHOR GMBH & CO. KG
    Inventors: Bernhard Hunke, Michael Kraemer, Andrei Tauber, Gunter Klug
  • FLUORESCENT WHITENING AGENT COMPOSITIONS
    Publication number: 20110094694
    Abstract: The invention relates to a composition suitable for paper brightening, wherein the composition contains one or more specified fluorescent whitening agents with taurine groups. The composition is used for whitening paper, in particular at the wet-end, in the size press or by coating.
    Type: Application
    Filed: June 10, 2009
    Publication date: April 28, 2011
    Applicant: BLANKOPHOR GMBH & CO. KG
    Inventors: Bernhard Hunke, Michael Kraemer, Andrei Tauber, Gunter Klug