WebEGD was incorporated into a mixture of the prepolymer of polyol (tetramethylene ether glycol) and 4,4'-methylene diphenyl diisocyanate to synthesize PU. EGD-PU showed excellent self-healing ... http://www.sellchems.com/products/fine-chemical/polytetramisethylene-ether-glycol-cas-24979-97-3/#:~:text=Polytetramethylene%20Ether%20Glycol%20%28PTMEG%29%20is%20a%20white%20waxy,alcohols%2C%20esters%2C%20ketones%2C%20aromatic%20hydrocarbons%20and%20hydrocarbon%20chlorides.

Polytetramethylene Ether Glycol (PTMEG), CAS 24979-97-3

http://www.sellchems.com/polytetramethylene-ether-glycol-cas-24979-97-3/ Polytetrahydrofuran, also called poly(tetramethylene ether) glycol or poly(tetramethylene oxide), is a chemical compound with formula (C 4H 8O)nOH2 or HO-(-(CH2)4O-)n-H. It can be viewed as a polymer of tetrahydrofuran, or as the polyether derived from 1,4-butanediol. The product is … See more The main use of polytetrahydrofuran is to make elastic fibres such as spandex (elastane) for stretchable fabrics and for polyurethane resins. The latter are polyurethane prepolymers dissolved in solvent. They are … See more Polytetrahydrofuran is commonly prepared by acid-catalyzed polymerization of tetrahydrofuran. The starting material is natural gas, which is converted to acetylene, then reacted with formaldehyde to make butynediol and then butanediol. The latter is turned … See more impact factor of journal of general virology

Europaisches Patentamt J) European Patent Office 0 405 227 A2 …

WebA poly (trimethylene-ethylene ether) glycol is disclosed. The composition is preferably used in breathable membranes, synthetic lubricants, hydraulic fluids, cutting oils, motor oils, … WebPoly(tetramethylene ether) glycol ia a polyether polyol.It is also known as PTMEG or polytetrahydrofuran and various tradenames such as "Terathane" and "PolyTHF". One of its CAS Registry Numbers is [25190-06-1].. It is prepared by acid-catalyzed polymerization of tetrahydrofuran.. The polymers are of moderate size, usually having number average … WebJun 30, 2013 · The 1 H NMR spectra of PTT-PTMEG copolymers is shown in Figure 2.In 1 H NMR spectra, the chemical shifts at 2.58 ppm (peak a; 2H, C–CH 2 –C) and at 4.84 ppm … list settings sharepoint online