Colorless Liquid 25190 06 1 PTMEG 250 Polyether Polyol
PTMEG((Polytetramethylene Ether Glycol)) 250
1. Description
As a compound of THF, it is transparent liquid with viscosity at a temperature higher than ambient temperature. The PTMEG is mainly used as a raw material of Polyurethane, Elastomer, Polyester Elastomer and Spandex fabric. We have a standard range of PTMEG products such as 250, 650, 1000, 1800, 2000, 3000 etc. in terms of molecular weight, whilst a customized product between 250 and 3000 can also possibly be produced based on a special order.
2. Synonyms
Poly(Oxytetramethylene) Glycol, Polytetramethylene Oxide(PTMO), Polybutylene Glycol, Polytetrahydrofuran(PTHF)
3. Properties
| Item | PTMEG-250 | PTMEG-650 | PTMEG-1000 | PTMEG-1400 | PTMEG-1800 | PTMEG-2000 | PTMEG-3000 |
| Boiling point | 250℃ or higher | 250℃ or higher | 250℃ or higher | 250℃ or higher | 250℃ or higher | 250℃ or higher | 250℃ or higher |
| Flash point | 260℃ or higher | 260℃ or higher | 260℃ or higher | 260℃ or higher | 260℃ or higher | 260℃ or higher | 260℃ or higher |
| Melting point | -8 ∼ -4℃ | 18 ∼ 20℃ | 25 ~ 27℃ | 27 ~ 29℃ | 29 ~ 30℃ | 29 ~ 31℃ | 31 ~ 33℃ |
| Specific gravity | 0.991 (40/4℃) |
0.984 (40/4℃) |
0.981 (40/4℃) |
0.978 (40/4℃) |
0.976 (40/4℃) |
0.974 (40/4℃) |
0.970 (40/4℃) |
4. Specifications
| Item | Unit | PTMEG-250 | PTMEG-650 | PTMEG-1000 | PTMEG-1400 | PTMEG-1800 | PTMEG-2000 | PTMEG-3000 | |||||
| Appearance | - | Transparent liquid at high temperature or white waxy solid at low temperature | |||||||||||
| Molecular weight | g/mol | 210±25 | 650±25 | 1000±25 | 1400±50 | 1800±50 | 2000±50 | 3000±100 | |||||
| Hydroxyl No. | mgKOH/g | 477.4 ~ 606.5 |
166.2~ 179.5 |
109.5~ 115.1 |
77.4~ 83.1 |
60.7~ 64.1 |
54.7~ 57.5 |
36.2~ 38.7 |
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| Acid No. | mgKOH/g | Max 0.05 | Max 0.05 | Max 0.05 | Max 0.05 | Max 0.05 | Max 0.05 | Max 0.05 | |||||
| Water | wt ppm | Max 300 | Max 150 | Max 150 | Max 150 | Max 150 | Max 150 | Max 150 | |||||
| Color | APHA | Max 40 | Max 40 | Max 40 | Max 40 | Max 40 | Max 40 | Max 40 | |||||
| BHT | wt ppm | 220±50 | 220±50 | 220±50 | 220±50 | 220±50 | 220±50 | 220±50 | |||||
5. Applications
- Polyurethane Fiber
- Polyurethane Elastomer
- Synthetic Leather
- Paint, Coating Agent
- Adhesives, Sealants
- Engineering Plastic
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