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Polymeg 650 |
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Polytetramethylene ether glycols(PTMEG) are produced by the polymerization of tetrahydrofuran(THF). Polymeg polyols are components of thermoplastic and thermoset urethane elastomers, spandex fibers and polyether ester thermoplastic elastomers. - Used in - Cast, TPU, Cope, Spandex - Superior hydrolytic stability. - High fungus resistance. - Low temperature flexibility. - Superior dynamic properties. - Excellent abrasion resistance. - High moisture vapor transmission. - Good tear strength. |
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Appearance: Clear water white to pale yellow liquid@>30'C. Molecular Weight: 600-700 Hydroxyl No., mg KOH/g: 160-187 Acid No., mg KOH/g, max: 0.05 Moisture, ppm max: 150 Volatiles, ppm max: 1000 APHA Color, max: 50 Antioxidant, BHT, ppm: 600-1000 |
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