Patents Assigned to Lintrend Limited
  • Patent number: 4487608
    Abstract: Viscose or other regenerated cellulose fibres are prepared for dyeing by cross-linking the fibres, and they are then dyed by a continuous dyeing technique, followed by fixing of the dye in the fibres. The continuous dyeing generally involves impregnating the assembly in one or more impregnation stages with a vat or reactive dye and alkali. The process results in improved dye receptivity. The process is of particular value for the production of dyed fabrics and yarns and novel products comprise cross-linked regenerated cellulose fibres dyed with vat or reactive dyes. Other disclosed processes involve stretching cross-linked viscose fibres during mercerization, and cross-linking crimped fibres.
    Type: Grant
    Filed: March 1, 1983
    Date of Patent: December 11, 1984
    Assignee: Lintrend Limited
    Inventor: Frederick R. W. Sloan