Patents Assigned to KEMIRA GERMANY GmbH
  • Fluorescent dyes for paper dyeing
    Patent number: 9057015
    Abstract: The present invention relates to an aqueous preparation comprising a fluorescent dyestuff of a specific formula, water, and optionally a dispersing agent, and the use of the aqueous preparation for dyeing cellulose- or polyamide-containing materials.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: June 16, 2015
    Assignee: Kemira Germany GmbH
    Inventor: Helmut-Martin Meier
  • COMPOSITION FOR IMPROVING DRY STRENGTH
    Publication number: 20130000857
    Abstract: The present invention relates to aqueous compositions for increasing dry strength in paper, wherein the composition comprises cationic starch graft polymers and aluminium containing compounds. Said compositions may be added to paper stock suspensions prior to the sheet formation or applied to the surface of the paper web in order to increase the dry strength of the produced paper.
    Type: Application
    Filed: March 21, 2011
    Publication date: January 3, 2013
    Applicant: KEMIRA GERMANY GmbH
    Inventor: Bernd Hauschel