polychlorinated biphenyl. PCBs are a group of toxic, chlorinated aromatic hydrocarbons used in a variety of commercial applications, including paints, inks, adhesives, electrical condensers, batteries, and lubricants. PCBs are known to cause skin diseases and are suspected of causing birth defects and cancer.
polyethylene naphthalate: a high performance thermoplastic polyester. The synthesis of PEN is analogous to that of conventional polyester (polyethylene terephthalate or PET). Its modulus is claimed to be five times that of nylon, 2.5 times t Last referenced in: Apparel business update, 3rd quarter 2008 (Global Apparel Markets Issue 3)