Acetate
- Cellulose Acetate; Triacetate where not less
than 92% of
the cellulose is acetylated
Acrylic
- At least 85% Acrylonitrile unite.
Aramid
Polyamide in which at least 85% of the amide
linkages are
directly attached to two
aromatic rings.
Glass
Glass - Modacrylic
Less than 85% but at least 35% acrylonitrile units.
Nylon
- Polyamide in which less than 85% of the
amide linkages
are directly attached to two
aromatic rings.
Olefin - At least 85%
ethylene, propylene, or other olefin units.
Polyester - At
least 85% ester of a substituted aromatic carboxylic
acid including but not
restricted to substituted
terephthalate units and
parasubstituted
hydroxybenzoate units .
Rayon
- Regenerated cellulose with less than 15%
chemically
combined substituents
Saran
- At least 80% vinylidene chloride
Spandex - Elastomer of at
least 85% of a segmented polyurethane
Vinal - At least 50%
vinyl alcohol units and at least 85% total
vinyl alcohol and acetal units
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