Water- and oil-repellent treatment of textile

Details Water- and oil-repellent treatment of textile Water- and oil-repellent treatment of textile

2005-09-06

2005-09-06

Cameron, Erma (Department: 1762)

Coating processes

With post-treatment of coating or coating material

Liquid extraction of coating constituent or cleaning coating

C427S377000, C427S430100

Reexamination Certificate

active

06939580

ABSTRACT:
A textile having durability of maintaining water- and sufficient oil-repellency and soil releasability before and after cleaning can be obtained by a method of preparing a treated textile, having steps of: (1) preparing a treatment liquid containing a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, preferably at most 3, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent is an emulsion containing a fluorine-containing compound and an emulsifier, the fluorine-containing compound is a fluorine-containing polymer and/or a fluorine-containing low molecular weight compound, and the emulsifier contains an anionic surface active agent having pKa of at least 2.

REFERENCES:
patent: 5073442 (1991-12-01), Knowlton et al.
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patent: 5520962 (1996-05-01), Jones, Jr.
patent: 5851595 (1998-12-01), Jones, Jr.
patent: 5952409 (1999-09-01), Boardman et al.
patent: 50-148699 (1975-11-01), None
patent: 62-85080 (1987-04-01), None
patent: 2000-110069 (2000-04-01), None
patent: WO 98/50619 (1998-11-01), None
International Search Report for PCT/JP01/02616, dated Jun. 26, 2001.
English Translation of International Preliminary Examination Report for PCT/JP01/02616 Dated Apr. 26, 2002.

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