Patents Assigned to ProChrome Technologies, Inc.
  • Process for dyeing or printing/flame retarding aramids
    Patent number: 5275627
    Abstract: Aramid fabrics treated with N-cyclohexyl-2-pyrrolidone prior to or simultaneously with aqueous print pastes promote fabric printability and produces good coloration. Saturated steam or superheated steam at a temperature of at least 100.degree. C. permeates and fixes the dye inside of the aramid fibers. Print pastes containing N-cyclohexyl-2-pyrrolidone, dye and thickener are also described.
    Type: Grant
    Filed: February 13, 1992
    Date of Patent: January 4, 1994
    Assignees: Burlington Industries, Inc., ProChrome Technologies, Inc.
    Inventors: Barbara J. Cates, Phillip H. Riggins, David R. Kelly