Names and symbols: polyformaldehyde, polyacetal, acetal, polyoxymethylene, polymethylene oxide, copolymers of formaldehyde, PFL, POM, STD, SFD, PMO, polyoxymethylene, acetal, POM. History of the development of polyformaldehyde production Back in the 1920s, the German chemist Staudinger, while studying the theory of the structure of macromolecules, studied the polymerization and structure of polyformaldehyde (PFL). However, due to the low thermal stability of the polymer, the production of polyformaldehyde did not find industrial application then. In 1948, DuPont began basic research on the processes of processing polyacetals by injection molding, finishing and applications of products made of polyacetals, focusing on the problems of increasing the thermal stability of the polymer. As a result, under the motto “Plastic will replace metal”, in 1956, the company released polyformaldehyde under the Delrin® brand name (Delrin) and from 1960 began its industrial production. Celanese has been researching polyformaldehyde since 1960 and launched its industrial production in 1962 under the Celkon® brand name. From this period, polyacetal is distinguished: – as a homopolymer made according to the technology of DuPont, and a copolymer made according to the Celanese technology. The companies Ticona, Heochst (Germany) and Celanese in 1963 formed a joint venture and began production of polyformaldehyde under the brand name Hostaform® (Hostaform). In 1968, Celanese, together with the Japanese company Daicel Chemical, organized the company Polyplastics, which began the production of polyacetals under the brand name Duracon®. At the expiration of the patents for basic technologies of DuPont and Celanese, many companies sought to develop new technologies for the production of polyformaldehyde. As a result, a number of companies also began to produce polyformaldehyde: BASF (Germany) under the trademark Ultraform®, Asahi Kasei (Japan) and Mitsubishi Gas Chemical. In Korea, Korea Engineering Plastics Co. began production of polyacetal under the Kepital® brand using Mitsubishi Gas Chemical technology, and Kolon, together with Toray (Japan), established KTP Industries Inc., introducing KOCETAL® polyformaldehyde in the market in 1988. Compamide Engineering Plastics is the regional distributor of KOLON PLASTICS for KOCETAL® polyformaldehyde.