Stain block treatment of textile

Details Stain block treatment of textile Stain block treatment of textile

2002-01-30

2004-12-21

Einsmann, Margaret (Department: 1751)

Compositions

Durable finishes for textile materials, or processes of...

C252S008620, C252S008630, C252S008840, C008S115660, C427S315000, C428S096000

Reexamination Certificate

active

06833082

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a treatment for imparting excellent stain block property (stain resistance), WAQE resistance (stain block property after alkaline treatment) and yellowing resistance to a textile. A method of the present invention is particularly useful for carpet.
BACKGROUND OF THE INVENTION
Hitherto, various treatment methods have been proposed in order to impart a stain block property to a textile such as a carpet. For example, a process of treating a textile comprising decreasing a pH of a treatment liquid, applying the treatment liquid to the textile, thermally treating the textile with steam, washing the textile with water, and dehydrating the textile (hereinafter, sometimes referred to as “Exhaust process”) is proposed.
A method comprising the Exhaust process is proposed in U.S. Pat. Nos. 5,073,442, 5,520,962 and 5,516,337, and International Publication WO 98/50619.
U.S. Pat. No. 5,073,442 discloses a method of treating a textile, comprising conducting an Exhaust process by using a water- and oil-repellent agent comprising a fluorine-containing compound, a formaldehyde condensation product and an acrylic polymer. U.S. Pat. No. 5,520,962 discloses a method of treating a carpet, comprising conducting an Exhaust process by using a fluorine-containing compound and a polymeric binder. U.S. Pat. No. 5,516,337 discloses a method of treating a textile, comprising conducting an Exhaust process by using a fluorine-containing water- and oil-repellent agent and a metal compound such as aluminum sulfate. International Publication WO 98/50619 discloses a method of treating a carpet, comprising conducting an Exhaust process by using a fluorine-containing water- and oil-repellent agent and a salt such as a magnesium salt.
Sufficient stain block property cannot be obtained by conducting the Exhaust process in accordance with these methods.
SUMMARY OF THE INVENTION
An object of the present invention is to give a textile excellent in stain block property, WAQE resistance (stain block property after alkaline treatment) and yellowing resistance, when an Exhaust process is used.
The present invention provides a method of preparing a treated textile, comprising steps of:
(1) preparing a treatment liquid comprising a stain blocking agent and a sulfated castor oil and having pH of at most 7,
(2) applying the treatment liquid to the textile,
(3) treating the textile with steam, and
(4) washing the textile with water and dehydrating the textile.
The present invention also provides a textile prepared by the above-mentioned method, and a treatment liquid used in the above-mentioned method.


REFERENCES:
patent: 4937123 (1990-06-01), Chang et al.
patent: 5073442 (1991-12-01), Knowlton et al.
patent: 5516337 (1996-05-01), Nguyen
patent: 5520962 (1996-05-01), Jones, Jr.
patent: 6197378 (2001-03-01), Clark et al.
patent: 0 332 342 (1989-02-01), None
patent: 1-280076 (1989-11-01), None
patent: WO 98/50619 (1998-11-01), None

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