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Polymerization of ethylene oxide is an exothermic process. Overheating or contaminating ethylene oxide with catalysts, such as alkalis or metal oxides, can lead to runaway polymerization, which can end in an explosion after a few hours. Polyethylene oxide, or high-molecular-weight polyethylene glycol, is synthesized by suspension polymerization.
Ethylene oxide is widely used to generate detergents and surfactants by ethoxylation. Its hydrolysis affords ethylene glycol. It is also used for sterilisation of medical instruments and materials. The reaction of epoxides with amines is the basis for the formation of epoxy glues and structural materials.
Ethylene oxide in presence of water can hydrolyze to ethylene glycol and form polyethylene oxide, which then eventually is oxidized by air and leads to hotspots that can trigger explosive decomposition. Fires caused by ethylene oxide are extinguished with conventional media including foam, carbon dioxide, or water.
Polyols may be classified according to their chemistry. [5] Some of these chemistries are polyether, polyester, [6] polycarbonate [7] [8] and also acrylic polyols. [9] [10] Polyether polyols may be further subdivided and classified as polyethylene oxide or polyethylene glycol (PEG), polypropylene glycol (PPG) and Polytetrahydrofuran or PTMEG.
In this application, ethoxylation is known as "PEGylation" (polyethylene oxide is synonymous with polyethylene glycol, abbreviated as PEG). Carbon chain length is 8-18 while the ethoxylated chain is usually 3 to 12 ethylene oxides long in home products.
Macrogol came into use as a bowel prep in 1980 and was approved for medical use in the United States in 1999. [ 10 ] [ 11 ] [ 12 ] It is available as a generic medication and over the counter . [ 3 ] [ 13 ] In 2022, it was the 209th most commonly prescribed medication in the United States, with more than 1 million prescriptions.
Poly(p-phenylene oxide) (PPO), poly(p-phenylene ether) (PPE), poly(oxy-2,6-dimethyl-1,4-phenylene), often referred to simply as polyphenylene oxide, is a high-temperature thermoplastic with the general formula (C 8 H 8 O) n. It is rarely used in its pure form due to difficulties in processing.
Polyethylene oxide, alternate name for Polyethylene glycol, a polymer Old Persian , ISO 639-2 and ISO 639-3 language code peo Pancyprian Federation of Labour , an umbrella organization for trade unions in Cyprus (Greek: Παγκύπρια Εργατική Ομοσπονδία , Pankypria Ergatiki Omospondhia )