Polytetrahydrofuran Instruction:

Polytetrahydrofuran (PTMEG) is a waxy white solid that melts to a colorless, clear, viscous liquid near room temperature. PTMEG is produced by the catalytic polymerization of tetrahydrofuran (THF). The primary uses of PTMEG are in the production of spandex (polyurethane) fibers, polyurethane elastomers, and copolyester-ether elastomers.

Polytetramethylene ether glycol Description:

Polyurethanes are mainly produced from polyols and diisocyanates, where the polyol fraction (in this case, PTMEG) forms the soft segment and the diisocyanate provides the hard segment.PTMEG is used in thermoplastic polyurethanes (TPUs) and cast polyurethane elastomers, as well as polyurethane adhesives, sealants and surface coatings. Products made from PTMEG-based polyurethane elastomers include automotive and aviation hoses and gaskets, forklift tires and wheels, roller skate wheels, industrial belts, tank and pipe liners, mining and oil production pump liners, shoes (such as athletic shoes), apparel (such as leather coats), and medical prostheses, catheters and other medical devices. the advantages of PTMEG-based polyurethanes are resistance to hydrolysis and fungus, low-temperature flexibility, low heat build-up, high elasticity, low viscosity, and very low noise characteristics.

Polytetramethylene ether glycol (PTMEG) is a homopolymer obtained by cationic ring-opening polymerization of the monomer tetrahydrofuran (THF) in the presence of a catalyst. PTMEG is a linear polyether glycol with primary hydroxyl groups. At room temperature, PTMEG is a white waxy solid. When the temperature exceeds room temperature, PTMEG is melted into a clear, colorless liquid. PTMEG is readily soluble in alcohols, esters, ketones, aromatic and chlorinated hydrocarbons and insoluble in aliphatic hydrocarbons and water.