Place of Origin: | CHINA |
Brand Name: | ExceedChem |
Certification: | ISO9001:2008 |
Model Number: | PTMEG 1800 |
Minimum Order Quantity: | 1000kg |
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Price: | FOB QINGDAO USD3.6/kg |
Packaging Details: | 200kg/drum, ISO tank |
Delivery Time: | within two weeks after confirming the order |
Payment Terms: | T/T, L/C at sight |
Supply Ability: | 1000tons per year |
Appearance: | Clear Liquid | CAS NO.: | 25190-06-1 |
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Molecular Weight: | 1800 | Application: | Used Extensively In The Production Of Convention Polyurethane Elastomer, Such As Spandex Fiber, Coating Agent Of Artificial Leather, Thermoplastic Polyurethane (TPU), Thermoplastic Polyester Elastomer And Others (adhesive, Foam Etc.) |
PTMEG 1800 Used in the Production of Convention Polyurethane Elastomer
1. Introduction
PTMEG 1800 is a diol with a nominal molecular weight of 1800, derived from the polymerization of tetrahydrofuran (THF). Its enhanced reactivity makes it an ideal component for polyurethane applications.
2. Manufacturing Process
Monomer: THF Polymer: PTMG
C4H8O + H2O → H(OCH2CH2CH2CH2)nOH
3. Application
PTMEG is widely used in the production of conventional polyurethane elastomers, including spandex fiber, artificial leather coatings, thermoplastic polyurethane (TPU), thermoplastic polyester elastomer, and various other products like adhesives and foams.
4. Specification
Type | PTMEG 1800 |
Appearance | Clear liquid |
Average Molecular Weight | 1840 |
Viscosity, at 40℃ | 510 ~ 560 |
APHA Color | Max 20 |
Hydroxyl Number, mgKOH/g | 59.4 ~ 62.6 |
Water Content, % | Max 0.01 |
Acid Value, mgKOH/g | Max 0.05 |
BHT, ppm | 200~300 |
5. Physical and Chemical Properties
Form | Liquid to waxy |
Odor | Odorless |
Color | Colorless |
PH value | 7 |
Melting point | 24℃ |
Boiling point | Min 250℃ |
Vapor pressure | Max 0.1 mbar (20℃) |
Density | 0.975g/cm3 (40℃) |
Solubility in water | Sparing soluble (20℃) |
6. Package
200kg Steel Drum; ISO Tank Container
7. Storage
PTMEG is hygroscopic, meaning it absorbs moisture. This can negatively impact the reactivity of polyurethane and the physical properties of the resulting polymer. Therefore, it should be stored in sealed containers under dry conditions, away from direct sunlight. The recommended storage temperature is between 20°C and 95°C. Opened drums should be resealed immediately after use.
8. Handling Precautions
While PTMEG has a low odor and acute toxicity, standard industrial hygiene practices should be followed when handling it. Wear appropriate protective clothing and safety glasses to prevent unnecessary contact and accidental ingestion. In case of skin or eye contact, rinse thoroughly with water. If eye contact occurs, seek medical attention.
9. Fire and Explosion Hazard
PTMG polyether glycol will burn under certain condition and can explode if heated to decomposition temperature in a confined area. Polyols fires can be extinguished with water fog, carbon dioxide or dry chemicals.