Polyethersulfone describes a family of thermoplastic polymers. These polymers are known for their toughness and stability at high temperatures. They contain the subunit aryl-SO2-aryl, the defining feature of which is the sulfone group. Polysulfones were introduced in 1965 by Union Carbide.

Polyethersulfone when used in combination with fluoropolymers such as PTFE (polytetrafluoroethylene) create a hard durable finish that has all the attributes of PTFE along with the non-porosity and durability of PES.

Key Characteristics of PES:

  • Durable
  • Good thermal properties
  • Good chemical resistance
  • Excellent non-permeability properties

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