Patents Assigned to Simco Holding Corporation
  • Process for protecting dyed nylon fibers from colorants and chemical agents
    Patent number: 6814758
    Abstract: Nylon fibers are protected from colorant staining by treating them with at least 2% we/wt (weight dry SAC/weight dry nylon fiber) of sulfonated aromatic aldehyde condensation product. The treated fibers are then fixed by the wet heat method.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: November 9, 2004
    Assignee: Simco Holding Corporation
    Inventors: Joseph A. Pacifici, Daniel G. Sims
  • Method of removing colorants from wastewater
    Patent number: 6059978
    Abstract: Cationic polymers are added to wastewater containing colorants to form a cationic polymer/colorant complex. Anionic polymers are then added to the wastewater to produce a flocculent precipitate that is separated from the wastewater.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: May 9, 2000
    Assignee: Simco Holding Corporation
    Inventors: Joseph A. Pacifici, Daniel G. Sims
  • Method for dyeing nylon fabrics in multiple colors
    Patent number: 5925149
    Abstract: When nylon fibers are dyed with a first anionic dye and then treated with a stainblocker, they can be woven into a fabric with untreated nylon fibers and then subjected to a second dyeing process using a second anionic dye of a different color than the color of the first anionic dye, without risk of dye bleed or dye blending during the second dyeing operation.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: July 20, 1999
    Assignee: Simco Holding Corporation
    Inventors: Joseph A. Pacifici, Daniel G. Sims