Patents Examined by Michael Lusicnan
  • Stainblocker and fluorocarbon oil repellents
    Patent number: 4857392
    Abstract: This invention relates to a new composition and process that affords "total stain protection" finishing of polyamide products, i.e., carpet. This composition of non-ionic fluorocarbon and sulfomethylated phenolformaldehyde condensates provides protection against oil and waterborne soils and in addition, protects the treated substrate against food colors by means of a one-step application.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: August 15, 1989
    Assignee: Crompton & Knowles Corporation
    Inventors: Alexander S. Kirjanov, Dieter Hoecklin