Patents Assigned to Apollo Chemical Company
  • Liquid alkali for soaping off reactive dyes
    Patent number: 5378242
    Abstract: A liquid alkali for use in soaping off of cotton and cotton blended fabrics. The liquid alkali is a water-based solution of an alkali metal hydroxide and an alkali metal silicate. Preferably the composition is an aqueous mixture of potassium hydroxide and sodium silicate. In the most preferred embodiment the composition includes 35 wt % potassium hydroxide at a 45 wt % concentration, 25 wt % sodium silicate at 50.degree. Baume, and the balance water. In an alternative embodiment, up to 5 wt % of a borate is added.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: January 3, 1995
    Assignee: Apollo Chemical Company
    Inventors: Nick J. Christie, Samuel G. Jones