PTMEG (Polytetramethylene Ether Glycol)
PTMEG: Polytetramethylene Ether Glycol
CAS NO.: 25190-06-1
Capacity: 92 kt/year
PTMEG, also known as polytetrahydrofuran (PTMG), is a linear polyether diol made from tetrahydrofuran (THF) by ring-opening polymerization. As the core raw material of high-performance polyurethane, PTMEG has an irreplaceable position in high-end fields such as spandex and elastomers due to its low-temperature elasticity, hydrolysis resistance and adjustable molecular weight. In the future, with the breakthrough of bio-based processes and the upgrading of environmental protection demands, PTMEG will continue to promote the green and high-performance development of the polyurethane industry.
Specification
NO. | Analysis item | Unit | Specification | Method |
1 | Appearance | / | Colorless transparent liquid,no visible | GB/T25254-2022 |
2 | Molecular Weight | g/mol | 980~1000 | |
3 | Hydroxyl Number | mg/g | 112.20～114.50 | ASTM E 1899-2023 |
4 | (40℃)Viscosity | mPa · s | 280~310 | GB/T10247-2008 |
5 | Molecular weight ratio | / | 1.98～2.02 | GB/T25254-2022 |
6 | Color | Hazen | ≤25 | ASTM D 1500-2017 |
7 | Water | mg/kg | ≤100 | ASTM D 4672-2018 |
8 | Acide | mg/g | ≤0.05 | GB/T25254-2022 |
9 | BHT | mg/kg | 150～250 | GB/T25254-2022 |
10 | Carbonyl ratio | / | ≤0.5 | GB/T25254-2022 |
11 | 1-Butanol | μg/g | / | Q/LSTHNY 001-2022 |
PTMEG1000
NO. | Analysis item | Unit | Specification | Method |
1 | Appearance | / | Colorless transparent liquid,no visible | GB/T25254-2022 |
2 | Molecular Weight | g/mol | 1800~1820 | GB/T 25254-2022 |
3 | Hydroxyl Number | mg/g | 61.60～62.30 | ASTM E 1899-2023 |
4 | (40℃) Viscosity | mPa · s | 1020~1050 | GB/T 10247-2008 |
5 | Molecular weight ratio | / | 2.02~2.04 | GB/T 25254-2022 |
6 | Color | Hazen | ≤25 | ASTM D1500-2017 |
7 | Water | mg/kg | ≤100 | ASTMD4672-2018 |
8 | Acide | mg/g | ≤0.05 | GB/T 25254-2022 |
9 | BHT | mg/kg | 150~250 | GB/T 25254-2022 |
10 | Carbonyl ratio | / | ≤0.5 | GB/T 25254-2022 |
11 | 1-Butanol | μg/g | / | Q/LSTHNY 001-2022 |
PTMEG1800
NO. | Analysis item | Unit | Specification | Method |
1 | Appearance | / | Colorless transparent liquid,no visible | GB/T25254-2022 |
2 | Molecular Weight | g/mol | 1990～2010 | GB/T 25254-2022 |
3 | Hydroxyl Number | mg/g | 55.80～56.40 | ASTM E 1899-2023 |
4 | (40℃) Viscosity | mPa · s | 1260~1330 | GB/T 10247-2008 |
5 | Molecular weight ratio | / | 2.04~2.06 | GB/T 25254-2022 |
6 | Color | Hazen | ≤25 | ASTM D 1500-2017 |
7 | Water | mg/kg | ≤100 | ASTM D 4672-2018 |
8 | Acide | mg/g | ≤0.05 | GB/T 25254-2022 |
9 | BHT | mg/kg | 150～250 | GB/T 25254-2022 |
10 | Carbonyl ratio | / | ≤0.5 | GB/T 25254-2022 |
11 | 1-Butanol | μg/g | / | Q/LSTHNY 001-2022 |
PTMEG2000
Product Application
Certificates and Compliance
EU-REACH / K-REACH / RoHS / SVHC / SDS / ESDS
