{{Unreferenced, date=October 2010
Elasterell (officially "elasterell-p") is an alternative to the
generic term
Trademark distinctiveness is an important concept in the law governing trademarks and service marks. A trademark may be eligible for registration, or registrable, if it performs the essential trademark function, and has distinctive character. R ...
"
polyester" for a specific subgroup of inherently
elastic
Elastic is a word often used to describe or identify certain types of elastomer, elastic used in garments or stretchable fabrics.
Elastic may also refer to:
Alternative name
* Rubber band, ring-shaped band of rubber used to hold objects togethe ...
, multicomponent
textile
Textile is an umbrella term that includes various fiber-based materials, including fibers, yarns, filaments, threads, different fabric types, etc. At first, the word "textiles" only referred to woven fabrics. However, weaving is not t ...
fibers
Fiber or fibre (from la, fibra, links=no) is a natural or artificial substance that is significantly longer than it is wide. Fibers are often used in the manufacture of other materials. The strongest engineering materials often incorporate ...
.
The
Federal Trade Commission (FTC) in November 2002 issued a final rule which establishes the name (https://www.ftc.gov/sites/default/files/documents/federal_register_notices/rules-and-regulations-under-textile-fiber-products-identification-act-16-cfr-part-303/021127rulesandregulations.pdf). Elasterell was originally manufactured by E.I. du Pont de Nemours and Company and previously referred to as "T400". The FTC states that because this material is arguably comparable to other multicomponent polyester fibers, other companies that manufacture fibers satisfying the definition of "elasterell-p" may use that name in making required fiber content disclosures on labels.
The FTC defines "elasterell-p" as fiber formed by the interaction of two or more chemically distinct
polymer
A polymer (; Greek ''poly-'', "many" + '' -mer'', "part")
is a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits. Due to their broad spectrum of properties, both synthetic and ...
s (of which none exceeds 85% by weight) which contains
ester group
In chemistry, an ester is a compound derived from an oxoacid (organic or inorganic) in which at least one hydroxyl group () is replaced by an alkoxy group (), as in the substitution reaction of a carboxylic acid and an alcohol. Glycerides a ...
s as the dominant functional unit (at least 85% by weight of the total polymer content of the fiber) and which, if stretched at least 100%, durably and rapidly reverts substantially to its unstretched length when the tension is removed.
Synthetic fibers