Polycyclohexylenedimethylene terephthalate (PCT) is a thermoplastic polyester formed from the polycondensation of terephthalic acid and cyclohexylene-dimethanol. Thus the chemical structure is similar to that of polyethylene terephthalate (PET), with which it shares properties like dimensional stability and chemical resistance. PCT is also particularly resistant to high temperatures and hydrolysis. The melting point is 545 °F. ]]).
Polycyclohexylenedimethylene terephthalate has outstanding dimensional stability at excess temperatures (short-term up to 493 °F) making this material suitable for injection molding of thin-walled parts. PCT is frequently used for electronics components like plug connectors. PCT is also processed into filaments, fibers and fabrics that are used in industry as filters. The color stability and lower density are of advantage in other applications, especially in the LED reflector application.
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