By establishing ether links between many molecules of simpler compounds (monomers), Polyether is formed as part of a class of organic substances. As a group of polymers, polyethers are unusually diverse as they may either be chainlike or networklike in molecular structure. Water-soluble liquids or waxy solids, polyethylene glycols are applied in cosmetics and pharmaceuticals, as well as emulsifying and wetting agents. In addition to suppressing foaming in industrial processes, polypropylene glycols make hydraulic fluids, polyurethane resins, and many other materials.
As a result of curing, liquid polyethers are converted into infusible solids, which are widely used as coatings and adhesives. A phenoxy resin is a polyether like an epoxy, but its molecular weight is higher and does not require curing; it is mostly used as a primer for metal. Penton, a chlorine-containing polyether unaffected by many chemicals, is fabricated into sheets to line storage tanks and other containers. Polyphenylene oxide resins, such as Noryl, are highly resistant to water and high temperatures (175°–300° C; 350°–575° F).
Usage of Polyether
A polyether polyol is abbreviated as Polyether. It is an oligomer with ether bonds in the main chain (—R—O—R—) and hydroxyl groups in the terminal or side group (—OH). This compound is prepared by adding an initiator (a compound containing an active hydrogen group) to ethylene oxide (EO), propylene oxide (PO), and butylene oxide (BO) in the presence of a catalyst to polymerize. Detergent or Defoamer: Synthetic detergents with low foam and high detergency are prepared with L61, L64, and F68; In the papermaking and fermentation industries, L61 and L81 are applied as defoamers; In artificial heart-lung machines, F68 prevents air from entering the blood circulation to avoid foaming. Excipients and emulsifiers: In oral cavity products, nasal sprays, eye drops, ear drops, and shampoos, polyether is used as a pharmaceutical excipient and emulsifier with very low toxicity.
Wetting agent: F68 Polyether is used in sugar factories because of its increased water permeability, resulting in more sugar production. Polyether is considered an effective wetting agent and can be applied and used in acid baths for dyeing fabrics, photographic development, and electroplating. Antistatic agent: L44 provides long-term static protection with polyether for synthetic fibers. Dispersant: In emulsion paints, polyether is used as a dispersant. F68 acts as an emulsifier during the vinyl acetate emulsion polymerization process. In addition to being used as pesticide emulsifiers, L62 and L64 can also be used as coolants, lubricants during metal cutting and grinding, and rubber vulcanization lubricants.
Technical data sheet & Chemical Formula
In Polyether structures, ether bonds are formed between monomers when polymerized in a chain or network structure. An oligomer of hydroxyl functional function, polyether is commonly used to produce polyurethanes. It is produced by polymerizing alkylene oxide. The chemical formula is (CHOH)nH2.
|Hydroxyl value(KOH mg/g)||14±1.5|
|Acid value(KOH mg/g)||≤0.08|
Packing of Polyether
Polyether is usually packed in 200-500 kg drums or 1000kg IBC drums.
Safety & warning & transportation of Polyether
In accordance with Regulation (EC) 1272/2008 [CLP], Polyether is not hazardous. The products have a high flash point and are flammable. Explosion: no explosion. Use foam, powder, steam, and water to put out the fire. Toxicity: almost non-poisonous. If they splash on the skin or in the eyes, rinse them immediately with plenty of water. They must be stored at room temperature in a ventilated and dry warehouse for one year. It can be used again after a year if it is still in good condition. Protect the products from rain and transport them lightly.