Scotchgard is a 3M product brand, stain resistant and durable waterproof applicator applied to fabrics, furniture, and carpets to protect it from stains.
The original formula for Scotchgard was discovered by accident in 1952 by the 3M chemist Patsy Sherman and Samuel Smith. Sales began in 1956, and in 1973 two chemists received a patent for the formula.
In 1999, the United States Environmental Protection Agency (EPA) began an investigation into the chemicals class used at Scotchgard, after receiving information about the global distribution and perfluorooctane sulfonate toxicity (PFOS), the "main ingredient" of Scotchgard. The perfluorooctanesulphonamide (PFOSA) compound, PFOS precursor, is a material and has also been described as a "key ingredient" of Scotchgard. Under US EPA pressure, in May 2000, 3M announced the elimination of PFOA, PFOS, and PFOS related products.
3M reformulated Scotchgard and since June 2003 has replaced PFOS with perfluorobutanesulfonic acid (PFBS). PFBS has a much shorter half-life in people than PFOS (slightly above one month vs 5.4 years). In May 2009, PFOS was determined to become a persistent organic polluter (POP) by the Stockholm Convention.
Video Scotchgard
See also
- Fluorocarbon
- Fluorosurfactant
Maps Scotchgard
References
Source of the article : Wikipedia
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