Patents Assigned to DryStar Colours Distribution GmbH
  • Heavy metal free, blue and navy fibre-reactive dye mixtures
    Patent number: 10301475
    Abstract: The invention relates to mixtures of fiber-reactive Triphendioxazine dyes with other fiber-reactive azo dyes and their use for the dyeing of hydroxyl- and especially carboxamide-containing material in blue and navy shades.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: May 28, 2019
    Assignee: DryStar Colours Distribution GmbH
    Inventors: Adrian Murgatroyd, Manfred Hoppe, Clemens Grund, Brian Connolly, Thomas Stepanski