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Polyacetals, also referred to as polyoxymethylenes (POMs) or polyformaldehydes, are a semicrystalline engineering thermoplastic polymerized as a homopolymer and copolymer. The homopolymer and copolymer have somewhat different molecular structures and performance values. The difference between performance values is narrowing with new formulations (compounds). Polyacetal engineering thermoplastics were introduced to the world in 1956 with the potential of replacing metals, aluminum, brass, and cast zinc, which polyacetals continue to do.
Primary polyacetal resin producers, custom compounders, and distributors are shown in Table 5.1.
| Company | Material or product |
|---|---|
| Primary resin producers (also compounding) | |
| Asahi Kasei | Tenac acetal homopolymer |
| Osaka, Japan | Tenac C acetal copolymer |
| Lynex T acetal copolymer conductive grades | |
| BASF | Ultraform acetal copolymer |
| Ludwigshafen, Germany Florham Park, N.J., USA | |
| DuPont Engineering Plastics Wilmington, Del., USA | Delrin acetal homopolymer, copolymer |
| Formosa Plastics Corp. of Taiwan Part of Formosa Group Taipei, Taiwan Livingston, N.J., USA | Formosacon acetal copolymer |
| Kolon Industries | Kolon Kocetal acetal copolymer |
| Toray and Kolon, codevelopers | High heat stability |
| Acetal Copolymers Kwacheon-city, Kyunggi-do Korea (Rep.) | |
| KTP (Kisan), joint venture of Toray and Kolon, codevelopers of acetal copolymers | Amilus acetal copolymer, marketed by Toray in North America, Europe High heat stability |
| Kimchon-City, Gyungsanbuk-Do Korea (Rep.) | |
| Korea Engineering Plastics | Kepital acetal copolymer |
| Seoul, Korea (Rep.) LG Chem Seoul, Korea (Rep.) | Lucel , Lucet acetal homopolymer, copolymer |
| Mitsubishi Gas Chemical (Mitsubishi Engineering Plastics) Marunouchi, Chiyoda-ku, Tokyo,... |
