Copolyester Elastomer: The Versatile and Sustainable Material for Modern Applications

Copolyester elastomers, also known as COPE, are a family of thermoplastic elastomers that offer a unique balance of properties. They are versatile, durable, and provide excellent chemical resistance, making them ideal for use in a wide range of applications.

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What is Copolyester Elastomer?

Copolyester elastomers are a type of thermoplastic elastomer (TPE) that are made by combining hard and soft segments in a copolymer chain. This creates a material that is both flexible and strong, with a range of physical properties that make it suitable for use in a wide variety of applications.

The hard segments of the copolyester elastomer provide the material with strength and rigidity, while the soft segments give it flexibility and elasticity. The result is a material that can be easily molded into complex shapes, but also has the ability to recover its original shape after being stretched or compressed.

Properties of Copolyester Elastomer

Copolyester elastomers have a unique set of properties that make them well-suited for many different applications. Some of the key properties of COPE include:

  1. Flexibility: COPE materials are highly flexible and can be stretched to several times their original length without breaking.
  2. Chemical resistance: COPE materials are resistant to many common chemicals, including oils, greases, and acids.
  3. Durability: COPE materials are highly durable and can withstand repeated cycles of stretching and compression without breaking down.
  4. Low compression set: COPE materials have a low compression set, which means they can maintain their shape and elasticity even after being compressed for long periods of time.
  5. UV resistance: COPE materials are resistant to UV light, which means they can be used in outdoor applications without degrading or becoming brittle.

Applications of Copolyester Elastomer

Copolyester elastomers are used in a wide range of applications, including:

  1. Automotive: COPE materials are used in automotive applications such as seals, gaskets, and hoses due to their resistance to oils and chemicals.
  2. Consumer goods: COPE materials are used in a variety of consumer goods, including sports equipment, toys, and electronic devices, due to their flexibility and durability.
  3. Medical devices: COPE materials are used in medical devices such as catheters and tubing due to their biocompatibility and resistance to sterilization methods.
  4. Packaging: COPE materials are used in packaging applications such as food containers and beverage bottles due to their strength and ability to withstand repeated use.


Copolyester elastomers are a unique type of thermoplastic elastomer that offer a range of physical properties that make them ideal for use in many different applications. With their flexibility, chemical resistance, and durability, COPE materials are well-suited for automotive, consumer goods, medical device, and packaging applications, among others. As technology and materials science continue to advance, copolyester elastomers are likely to play an increasingly important role in many different industries.

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The Chemicals and Materials division of Persistence Market Research offers distinct and pin-point analysis about chemicals and materials industry. Chemical coverage extends from commodity, bulk, specialty and petrochemicals to advanced materials, composites and nanotechnology in particular with special emphasis on ‘green alternatives’, recycling and renewable technology developments, supply-demand-trade assessment. Our research studies are widely referred by chemical manufacturers, research institutions, channel partners and government bodies for developing – ‘The Way Forward’. 

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