Patents Assigned to The Secretary of State for Defence in Her Britanic Majesty's Goverment of the United Kingdom of Great Britain and Northern Ireland of Defence Evaluation & Research Agency
  • Patent number: 5932672
    Abstract: Permanently stain resistant nylon and cellulosic fibers, and a method to impart permanent stain resistance to polyamide or cellulosic fibers, by covalently binding a stain resistant composition to a linking compound that has been covalently attached to the fiber are disclosed. This invention represents a significant advance in the art of textile treatments in that the covalently linked stain resist treatment is not removed after a series of alkaline shampooins. This invention is particularly useful in the preparation of commercial grade carpets for heavy traffic areas that will not lose their stain resistance after frequent shampooing.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: August 3, 1999
    Assignee: The Secretary of State for Defence in Her Britanic Majesty's Goverment of the United Kingdom of Great Britain and Northern Ireland of Defence Evaluation & Research Agency
    Inventors: Colin R Willis, Stuart A Brewer