Qingdao Exceed Fine Chemicals Co.,Ltd
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PTMEG-250 for flexible TPU adhesives with high tensile strength
Description
Polytetramethylene etherglycol, also known as polytetrahydrofuran, referred to as PTMEG or PTG, is a linear polyether glycol with hydroxyl groups at both ends of the molecule, which is formed by ring-opening polymerization of tetrahydrofuran.
Application
PTMEG has excellent reactivity and is widely used in elastomer block polymers, showing excellent low-temperature elasticity, microbial resistance and hydrolysis stability, including polyurethane fiber (spandex), polyurethane elastomer, synthetic Leather, coating, adhesive, sealant, polyester elastomer and polyamide elastomer.
Technical Specification
| Properties | Units | Specification |
| Appearance | Clear and transparent liquid | |
| Molecular Weight | g/mol | 220-300 |
| Hydroxyl No. | mgKOH/g | ＜500 |
| Water | ppm | ≤300 |
| Color | APHA | ≤50 |
Package
200kg / drum or ISO tank for packaging and transportation
Shelf Life
Shelf life of PTMEG is approximate 2 years, under condition that the product is stored in unopened, tightly sealed original container at no greater than 90℃ and is not contacted with air under a dry nitrogen blanket.
Shelf life is only guidance and is not a guarantee because there are various possibilities in site of end users to affect the quality of PTMEG.
