ECCtreme ™ ECA 1 4000 fluoroplastic resin is a new class of perfluoroplastic specifically designed for use in extreme applications requiring an operating temperature up to 300 °C (572 °F) 2 in combination with excellent electrical properties and/or chemical resistance. Chemours developed ECCtreme ™ ECA 4000 fluoroplastic resin in response to industry demand for a melt-extrudable, high-temperature fluoroplastic resin for wire and cable applications. ECCtreme ™ ECA 4000 fluoroplastic resin has been recognized as a 300 °C (572 °F) rated material per UL 746B2 by Underwriters Laboratories. Compared with ECCtreme ™ ECA 3000 fluoroplastic resin, ECCtreme ™ ECA 4000 fluoroplastic resin has a slightly higher melt-flow rate (MFR), making it ideal for constructions needing 2–10 mil (0.05–0.254 mm) of insulation.

ECCtreme ™ ECA 4000 fluoroplastic resin can be melt-processed using standard high-temperature fluoroplastic equipment, at standard operating speeds, and possesses physical, electrical, and chemical properties characteristic of polytetrafluoroethylene (PTFE). Its features include:

• UL rated for 300 °C (572 °F) 2

• High melting point of ~320 °C (608 °F)

• Excellent dielectric properties

• Excellent chemical and permeation resistance

• Broad wire processing window of operation

In addition, ECCtreme ™ ECA 4000 fluoroplastic resin demonstrates enhanced properties (e.g., higher melting point, increased melt viscosity, improved stress crack resistance) when subjected to post-processing heat treatment as shown in Table 1. This effect, known as epitaxial co-crystallization (ECC), occurs when the resin is heated between 280–300 °C (536–572 °F) for a prolonged period.