Stain Repellant
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A stain repellent is a product added to fabric in order to prevent
stain A stain is a discoloration that can be clearly distinguished from the surface, material, or medium it is found upon. They are caused by the chemical or physical interaction of two dissimilar materials. Accidental staining may make materials app ...
s.


Stains

Stains on fabrics are classified into three types: water-based stains and oil-based stains or a mix of both.


Stain repellant fabrics

Fabrics are finished with certain finishes that do not allow unwanted stains or that will wash out in simple
laundry Laundry refers to the washing of clothing and other textiles, and, more broadly, their drying and ironing as well. Laundry has been part of history since humans began to wear clothes, so the methods by which different cultures have dealt with t ...
.


Chemicals

Mostly larger PFCAs such as perfluorooctanoic acid (PFOA) are used in stain repellancy. It is also known colloquially as C8. PFOA is a product of health concern and subject to regulatory action and voluntary industrial phase-outs.


Alternative chemistry

There are chemicals which are based on C8 free chemistry that may be used as an alternative to PFOA, but those are less durable.


See also

* Fluorosurfactant * Perfluorobutanesulfonic acid * Perfluorooctanesulfonic acid * Scotchgard


Notes

Textile treatments {{textile-stub