Method of treating carpet yarn and carpet to enhance repellency
AssigneeShaw Industries Ltd.
InventorDennis J. Jones, Jr.
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Abstract
The invention is directed to a method and composition for treating carpet yarn and carpet to thereby enhance its repellency. In one aspect of the invention, the method includes the steps of providing a carpet yarn comprising polymeric fibers. An anionic or nonionic fluorochemical compound is provided in an aqueous medium, the aqueous medium having a pH below about 3.5. The carpet yarn is immersed in the aqueous medium. The carpet yarn and aqueous medium are heated after which excess water is removed from the carpet yarn.
Claims41
A method of treating carpet yarn to enhance its repellency comprising the steps of:
- providing a carpet yarn comprising polypropylene or polyester fibers;
- providing effective repellency enhancing amounts of an anionic or nonionic fluorochemical compound in an aqueous medium, the aqueous medium having a pH below about 3.5;
- immersing the carpet yarn in the aqueous medium;
- heating the carpet yarn and aqueous medium;
- and
- removing excess water from the carpet yarn.
A method of treating carpet yarn to enhance its repellency comprising the steps of:
- providing carpet yarn comprising polymeric fibers;
- providing effective repellency amounts of an anionic or nonionic fluorochemical in an aqueous medium, the aqueous medium having a pH below about 2.0;
- immersing the carpet yarn in the aqueous medium;
- and
- removing excess water from the carpet.
Dependencies are inferred from the claim text.