Hypalon 48 Chlorosulphonated polyethylene rubber 68037-39-8 Dupont Dow Elastomers Rubber - Elastomer >> Chlorinated rubber / Chloroprene, CR ADHESIVE Hypalon® is the registered trademark for a series of chlorosulfonated polyethylene synthetic rubbers manufactured by DuPont Dow Elastomers. Vulcanizates of Hypalon® are highly resistant to the deteriorating effects of ozone, oxygen, weather, heat, oil and chemicals. Hypalon® resists discoloration on exposure to light, and is widely used in light-colored vulcanizates. It can be compounded to give excellent mechanical properties—for example, high tensile strength and abrasion resistance. Several types and grades of Hypalon® are available for a variety of end use requirements. A general description of each of these products is shown in Table 1, and additional details are given in other sections of this technical bulletin. All of these types may be processed and used in the usual manner for solid elastomeric vulcanizates. However, several types are also of value in two additional areas— unvulcanized applications and solution coating applications. When compounding with Hypalon®, proper selection of polymer type is the starting point for a suitable finished product. Equally important is the selection of the other compounding ingredients. A general outline of compounding ingredients and their functions (arranged in alphabetical order) is shown. This technical bulletin is intended as a brief guide to selection of the most suitable type of Hypalon®—the first step in developing a practical, serviceable compound to meet the requirements of a particular application. Stable chlorosulfonated polyethylene rubber. Used in adhesives. Possesses very good resistance to ozone and oxygen even in nonblack compounds, very good oil resistance, very good chemical resistance, very good weathering resistance, electricity insulation properties, poor low temperature properties, good heat-aging, heat resistance upto 150°C, very good flame retardancy, very good abrasion resistance, fair-good compression set and good tear strength. Shows permanent bright colors and has no discoloration on exposure to light. Exhibits very good mechanical properties on compounding. Has high uncured strength.