Polyoxymethylene and polyformaldehyde

It’s definitely two different things. Paraformaldehyde (PF) is an important linear formaldehyde polymer in industry, with the molecular formula HO(CH2O)nH. It is a mixture composed of n=8–100 units of polyoxymethylene diol. Paraformaldehyde appears as a white or colorless, flammable crystalline powder or in the form of granular or flaky solids. It exists in two forms: low-polymerization-degree paraformaldehyde and solid paraformaldehyde. Polyformaldehyde generally refers to a solid formaldehyde product with a low degree of polymerization, where the degree of polymerization of the polyoxymethylene diol is n=8–10. Industrial products are usually powders with a CH2O content of ≥95% (Wt), as well as granular or powdered products with a CH2O content of 91–93% (Wt), which facilitates storage and transportation. By using polyformaldehyde in place of conventional industrial formalin solutions, it is possible to save energy and reduce the energy required for dehydration in the production of a wide range of formalin-based products such as pesticides, synthetic resins, coatings, and glutaraldehyde disinfectants. This also helps to **reduce the amount of wastewater that needs to be treated. Polyformaldehyde is used extensively due to its higher active content compared to industrial formaldehyde; it exists in the form of solid particles, which makes it suitable for applications in chemical synthesis in the chemical and pharmaceutical industries as well as in other industrial fields. It is particularly useful in syntheses that require anhydrous formaldehyde as a raw material. It can also be used as a disinfectant, bactericide, fumigant, and herbicide, as well as in the production of resins and artificial ivory. 　　Polyoxymethylene (POM) is divided into two main categories: one is the homopolymer of trioxymethane or formaldehyde, known as homopolymerized POM; the other is a copolymer of trioxymethane with a small amount of cyclic compounds, known as copolymerized POM. It generally refers to copolymerized formaldehyde. It belongs to engineering plastics. 　　Polyformaldehyde technology is mature and requires low investment ； Polyoxymethylene production technology still needs to be introduced in China, requiring large investments. In my opinion, if there is reliable polyoxymethylene technology, the prospects for investing in polyoxymethylene are excellent.

Simply put, polyformaldehyde is an oligomer of formaldehyde, while polyoxymethylene is a polymer of formaldehyde. There are two reports at HaiChuan on the analysis of the investment prospects for polyformaldehyde and polyoxymethylene: the \"Polyformaldehyde Market Research Report\" and the \"Polyoxymethylene Technology and Market Research Report\". They can be downloaded for review; the information presented in them is fairly clear, and although there are some errors, they can still serve as a reference.

Very useful and highly educational; thanks for sharing

I’ve learned it; I plan to use polyoxymethylene in the future :)