Patents Assigned to Precision Processes (Textiles) Limited
  • Polymers and prepolymers and their use in a method for the treatment of wool
    Patent number: 5571286
    Abstract: A process for shrink-proofing wool which comprises treating the wool with specific polymers and prepolymers derived from polyoxyalkyleneamines.
    Type: Grant
    Filed: July 7, 1994
    Date of Patent: November 5, 1996
    Assignee: Precision Processes (Textiles) Limited
    Inventors: David L. Connell, Anthony Szpala
  • Polymers and prepolymers and their use in a method for the treatment of wool
    Patent number: 5438116
    Abstract: Polymers and prepolymers derived from polyoxyalkyleneamines. The polymers and prepolymers may be used in a process for the treatment of wool so as to impart shrink resistance.
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: August 1, 1995
    Assignee: Precision Processes (Textiles) Limited
    Inventor: David L. Connell
  • Method for the treatment of wool
    Patent number: 5087266
    Abstract: A method for the treatment of wool so as to impart shrink resistance comprising the steps of:i) subjecting the wool to an oxidative pretreatment, andii) subsequently treating the wool with a) an amino functional polymer which itself confers a degree of shrink resistance and b) a silicone polymer capable of reacting with the reactive groupings of the amino functional polymer, so as to cause the polymers a) and b) to be applied to the wool fibers.The wool thus treated also has good rub fastness when dyed and a soft handle.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: February 11, 1992
    Assignee: Precision Processes (Textiles) Limited
    Inventors: David L. Connell, Kenneth M. Huddlestone, Anthony Szpala