Glossary of elastomer processing
Hypalon
Hypalon is the brand name for chlorosulphonated polyethylene (CSM), a synthetic elastomer developed by the DuPont Corporation. Hypalon is characterised by its excellent resistance to weathering, chemicals and UV and is used in various industries, including the automotive, construction and chemical industries. Although the Hypalon brand was discontinued in 2009, similar materials continue to be produced and used.
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UV and ozone resistance: ideal for outdoor use.
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Chemical resistance: resistant to acids, alkalis and solvents.
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Temperature stability: can be used at temperatures from approx. -20 °C to +150 °C.
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Abrasion resistance: durable even under mechanical stress.
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Flame-retardant: supports safety in critical applications.
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Waterproof: suitable for marine and water-related applications.
Hypalon is produced by chemically modifying polyethylene, introducing chlorine and sulphonyl groups into the polymer. This gives the material its outstanding resistance to environmental influences and chemicals.
Processing methods
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Extrusion: for the production of profiles and hoses.
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Calendering: for the production of rubber sheets, films and membranes.
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Compression moulding: for the production of moulded parts such as seals, grommets, bellows, buffers and protective caps.
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Coating: Hypalon is often used as a protective layer on textiles or other materials.
Automotive industry
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Hoses and seals: resistant to chemicals and heat.
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Roof systems: protection against weathering.
Construction industry
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Waterproofing membranes: water- and weather-resistant sealing for roofs and façades.
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Geotextiles: to protect structures against moisture.
Marine and outdoor applications
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Inflatable boats: ideal for durable boats thanks to UV and abrasion resistance.
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Protective clothing: coatings for water- and chemical-resistant textiles.
Chemical industry
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Container linings: chemical-resistant and durable.
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Protective covers: for tanks, pipes and plants in corrosive environments.
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Durability: Hypalon retains its properties for years, even under strong UV and weather exposure.
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Versatility: suitable for various applications, from hoses to large-area membranes.
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Chemical resistance: resistant to aggressive substances such as acids and alkalis.
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Safety features: flame-retardant and electrically insulating.
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Costs: Hypalon is more expensive than many other elastomers.
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Discontinued production: the Hypalon brand is no longer manufactured, which can limit availability.
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Processing: processing Hypalon requires special techniques and expertise.
| Property | Hypalon | Neoprene |
|---|---|---|
| UV and ozone resistance | Excellent | Good |
| Chemical resistance | Very high | High |
| Temperature range | -20 °C to +150 °C | -40 °C to +120 °C |
| Abrasion resistance | High | Medium |
| Costs | Higher | Lower |
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Why was the production of Hypalon discontinued? DuPont discontinued production in 2009 because other materials such as EPDM or newly developed elastomers offer similar properties.
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Are there alternatives to Hypalon? Yes, materials such as EPDM, neoprene or TPO (thermoplastic polyolefin) can replace Hypalon in many applications.
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How do you care for Hypalon products? Hypalon should be cleaned regularly to remove dirt and chemical residues. Special cleaners can be used to protect the surface.
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Is Hypalon recyclable? Yes, Hypalon can be recycled, but because of its chemical composition the process is more complex than for thermoplastic materials.
Despite the discontinuation of its production, Hypalon was and remains a highly valued material in industries with demanding requirements. Its resistance to weathering, chemicals and UV radiation makes it ideal for outdoor applications, the chemical industry and marine environments. Modern alternatives can be used in specific applications, but Hypalon remains synonymous with durability and performance.
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