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Poly(oxymethylene) glycol; Polymethylene glycol
|−9.36×10−6 (SI, 22°C) |
Except where otherwise noted, data are given for materials in their
Polyoxymethylene (POM), also known as acetal, polyacetal, and polyformaldehyde, is an engineering
POM is characterized by its high strength, hardness and rigidity to −40 °C. POM is intrinsically opaque white, due to its high crystalline composition, but it is available in all colors. POM has a density of 1.410–1.420 g/cm3.
Typical applications for injection-molded POM include high-performance engineering components such as small gear wheels, eyeglass frames, ball bearings, ski bindings, fasteners, guns, knife handles, and lock systems. The material is widely used in the automotive and consumer electronics industry.
Polyoxymethylene was discovered by
Around 1952, research chemists at
In 1960, DuPont completed construction of a plant to produce its own version of acetal resin, named Delrin, at