Polytetramethylene Ether Glycol Polyol 220 (PTMEG 220)
CAS Number: 25190-06-1
Empirical Formula: H[O(CH2)4]n-3OH
Our PTMEG 220 is a colorless, transparent liquid difunctional polyether polyol with a softening point of about -5°C. The viscosity of PTMEG 220 is about 50-60 mPa·s at 40°C. This differentiates PTMEG 220 from other PTMEG grades, which are waxy solids at room temperature. In polyurethanes, PTMEG 220 soft blocks afford high specific stiffness, high specific strengths and higher glass-transition temperatures. This grade is used in self-healable, shape-memory restorative polyurethane structures.
|Molecular Weight||220 ± 25|
|Hydroxyl Value (mg KOH/g)||515 ± 60|
|Color (Hazen)||≤ 40|
|Moisture (ppm)||≤ 300|
|Acid Value (mg KOH/g)||≤ 0.050|
|Volatile Matter (%)||≤ 0.1|
PTMEG 220 is used in a broad range of engineering applications where the 220 MW can enable tunable properties for aircraft panels, impact mitigation, vibration and acoustic attenuation, etc. It is used in applications such as:
Using PTMEG 220 to manipulate the properties of the PTMEG blocks allows the design of elastomers that span the spectrum from very hard and rigid to very soft and flexible.
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