Chlorosulfonated polyethylene hoses

Hypalon chlorosulfonated polyethylene was introduced by Du Pont in 1952. Although not a high volume rubber it has found use in coatings and hoses. 

Chlorosulfonated Polyethylene Ruhher Thermosetting elastomers containing 20-40% chlorine. Has good weatherability and heat and chemical resistance. Used for hoses, tubes, sheets, footwear soles, and inflatable boats. 

CSM is extensively used in construction and electrical applications. This includes roofing membranes, automotive ignition boots and wires, roll compoimds, and some automotive hoses requiring good heat and oil resistance, eg, air conditioning and power steering hoses. It is also used in nuclear power plants because of its excellent resistance to radiation degradation. Chlorosulfonated polyethylene is sold under the trade name Hypalon. 

Natural rubber/chlorosulfonated polyethylene rubber blends also exhibited immiscibility. Chlorosulfonated polyethylene rubber is the synthetic rubber used for applications in electric cables, hoses for liquid chemicals, waterproof cloths, floor tiles, and oil-resistant seals. It is chosen to blend with natural rubber to improve the resistance of natural rubber to ozone, oil, heat, flame and non-polar chemicals. This is due to the effect of the polarity of the chlorine groups in the chlorosulfonated polyethylene rubber. The tensile strength, elongation at break, and tear strength of these blends decreased with the increasing chlorosulfonated polyethylene rubber contents. In addition, the compatible natural rubber/chlorosulfonated polyethylene rubber blends were improved by adding the epoxidized natural rubber (Epoxyprene 25) as a... 

In polyolefins, it is used mainly in LDPE wire and cable insulation. Other uses reported or claimed include EVA wire and cable and foam carpet-backing EMA wire and cable EPR and EPDM wire and cable, electrical insulation, roofing, and automotive parts— white-wall tires, hoses, seals, and weather stripping XLPE wire and cable chlorosulfonated polyethylene and HDPE and polybutene. There is considerable interest in its use in PP cabinets (less smoke than polystyrene). 

The sulfonation of polyethylene membranes was examined under various experimental conditions and the results showed that sulfonation greatly enhanced the water permeability of the resultant membranes. A lower concentration of chlorosulfonic acid at low temperature was preferable, so that only the surface and inner walls of the polymer were sulfonated and the mechanical properties of the membrane were not damaged. The electromicroscopy of polythene is facilitated by staining the polymer by immersing pieces of the polymer in chlorosulfonic acid at 60 °C for several hours. Chlorosulfonated polyethylene rubbers are useful for specific purposes, e.g. as ozone-resistant hoses. ... 

Nylon 6 Polyethylene, chlorosulfonated Tetrafluoroethylene/propylene copolymer hoses, automotive fuel Nylon 12 hoses, hydraulic... 

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