Polytetrahydrofuran diols

PTMO or PTHF poly(oxytetramethylene) diol or polytetrahydrofurane diol... 

Thus, from high MW diols (MW = 1000-4000 daltons) polyethers (polyalkyleneoxides, polytetrahydrofuran (PTHF)), polyesters, polycarbonates (PC), polybutadienes, etc., by the reaction with diisocyanates [toluene diisocyanate (TDI), or pure diphenyl methane diisocyanate (MDI)], high MW linear polyurethanes are obtained (no crosslinking), with high elasticity (polyurethane elastomers, spandex fibres, some adhesives and sealants, etc). 

Synonyms Poly (polytetrahydrofuran carbonate) diol Tetrahydrofuran, compd. with carbonic acid Classification Polymer... 

Poly (1,4-phenylene sulfide) resin. See Polyphenylene sulFrde resin Poly [(phenyl glycidyl ether)-co-farmaldeh e. See Epoxy-novolac Polyphenylmethyl siloxane. See Phenyl methicone Phenyl trimethicone Polyphosphoric acid, ammonium salt. SeeAmmonium polyphosphate Poly (polytetrahydrofuran carbonate) diol. See Polyether-polycarbonate diol... 

Poiypiasdone iNF-10, Poiypiasdone XL, Poiypiasdone XL-10. See Crospovidone Poiypiastoi 10. See Pentaerythrityl stearate Poiypiastoi 23. See Zinc 2-ethylhexanoate Poiypiate 90, Poiypiate 852, Poiypiate P, Poiypiate P01. See Kao I i n PoiypoilQ. See Polypropylene Poly (polytetrahydrofuran carbonate) diol. See Polyether-polycarbonate diol Polypropene. See Polypropylene Polypropylene CAS 9003-07-0... 

Common SS include polyethers, polyesters and polyalkyl glycols with glass transition temperatures in the range of -70°to -30°C. Commonly used macrodiols in the PUs synthesis are polyalkyl-diols, such as polyisobutylene diol [70], polybutadiene (PBU) [20, 71], or oligo-butadiene diols [72] as well as hydrogenated polybutadiene diol [20] polyether diols polytetrahydrofuran (PTHF or PTMO) [50-52], polyethylene glycol (PEG) or (PEO) [73], polypropyleneoxide (PPO) [73] or mixed blocks of them PEO-PPO-PEO [74] and PPO-THF [54] polyester diols poly(ethylene adipate) (PEA) [4,20], poly(butylene adipate) (PBA) [20, 73], and latterly polycaprolactone diol (PCL or PCD) [75], polyalkylcarbonate polyol [20] or mixed blocks of them, for example poly(carbonate-co-ester)diol [76], poly(hexamethylene-carbonate)diol [77], as well as poly(hexamethylene-carbonate-co-caprolactone)diol [78] and a mixed block copolymer of polyether and polyester blocks PCL-b-PTHF-b-PCL [79]. Examples schemes of macrodiols are shown in Eig. 1.9. 

In the PU synthesis we started from one mole of hydroxy-terminated macro-diol which was either a polyester type—polyethylene adipate (PEA) or a polyether type—polytetrahydrofuran (PTHF). 

Other polymers whose structure has been examined by SEC-MS include poly-3-hexylthiophene [34], styrene oligomers [35], PS [5, 36-38], e-caprolactone [39, 40], polytetrahydrofuran [41] macrocyclic vinyl polymers [42], bis (metholol propionic acid) dendrimers [43], poly-isocyanates [44], isosorbide diols [45], 3,5-diacetoxybenzoic acid polyesters [46], polyethylene and polypropylene oxide condensates and PEG containing a 1,3 disubstituted phenolic group [37]. 

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