PTMG 250
- CAS Number
- 25190-06-1
- Chemical Name
- Polytetramethylene Ether Glycol
- Chemical Family
- Glycol Ethers, Glycols, PolyolsGlycol EthersGlycolsPolyols
PTMG 250 is a member of the glycol ether chemical family, is a versatile monomer with distinctive features. Packaged in drums, tanks, and cans, it provides flexibility in storage for various applications. PTMG 250 is characterized by its hygroscopic nature.
Properties
- Physical Form
- Liquid
Product families
Applications
- Consumer Goods — Apparel
- Resin Manufacturing
Product Families
- Diols & Polyols
Other characteristics
- Brand
- PTMG
- Synonyms
Polyfurite, Polytetrahydrofuran, Poly(butylene oxide), Poly(n-butylene oxide), Poly(oxy-1,4-butanediyl), Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, Poly(oxy-1,4-butylene) glycol, Poly(oxybutylene) glycol, Poly(oxytetramethylene), Poly(oxytetramethylene) glycol, Poly(oxytetramethylene)diol, Poly(tetrahydrofuran), SRU, Poly(tetrahydrofurandiol), Poly(tetramethylene ether), Poly(tetramethylene ether) glycol, Poly(tetramethylene ether)diol, Poly(tetramethylene glycol), Poly(tetramethylene oxide), Poly(tetramethylene oxide) glycol, Polybutylene glycol, Polyfurit, Polytetramethylene glycol, Polytetramethylene glycol ether with butanediol, Polytetramethylene oxide diol
- Hydroxyl Value
- 458.0 - 547.3 mg KOH/g
- Note
- * - Mn = 112.2 × 1000 / OHV
- Markets
- Consumer Goods
- Industrial
- Appearance
- Colorless transparent liquid
- Technology
- Base Chemicals & Intermediates
- Packaging Type
- Cans
- Drums
- Quality Standards
- In Preview
- HIGHLIGHTS
PTMG 250 shows the following outstanding characteristics as a soft segment of polyurethane and polyester resins. The resins obtained are used over a broad range of applications, from common consumer goods such as garments, to the industrial materials such as machine parts. Applications are expected to continue to grow.; Impact resilience; Hydrolysis resistances; Low temperature flexibility; Wear resistance; Tear resistance; Fungus resistance
- Packaging Information
- 180kg
- Base Chemicals End Uses
- Adhesives
- Artificial Leather
- Coatings
- Paints
- Polyester Resins
- Polyurethane Resins
- Sealants
- Synthetic Leather
- Chemical Base
- Good Low Temperature Flexibility
- Hygroscopic
- Wear Resistance
- Base Chemicals Functions
- Monomer
- Storage Condition
PTMG 250 is hygroscopic and will degrade if exposed to oxygen or air, so it should be well-sealed with dry nitrogen.; PTMG 250 is a white, waxy sold at room temperature, but will become a clear, colorless liquid upon heating.; If it has solidified in the drum, it can be melted by holding the drum at about 70°C for 24 hours.; Avoid localized heating however.; For storage in the liquid state, it is recommended to maintain temperature at less than 50°C.; Volatility is low, and it is unlikely to catch fire at room temperature.; But if it is burning, extinguish the fire with dry chemical, alcohol-resistant foam, or large quantities of water.; Although PTMG 250 has relatively low toxicity and is relatively safe, use standard protective equipment such as goggles and gloves when handling it.
Technical data
Table 1 of 2
4 rows| Characteristic | Value | Unit |
|---|---|---|
| Freezing Point | -20 | °C |
| Flash point | 181 | °C |
| Viscosity (at 20°C) | 50 | mPa.s |
| Viscosity (at 40°C) | 40 | mPa.s |
Table 2 of 2
7 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Average Molecular Weight (Mn)* | 205 - 245 | — | Calculated by using hydroxyl value |
| Color | max. 40 | Hazen | Similar to JIS K 1557 and JIS K 0071-1 |
| Hydroxyl Value | 458.0 - 547.3 | mgKOH/g | Substantially similar to JIS K 1557 |
| Water Content | max. 300 | ppm | Substantially similar to JIS K 1557 |
| Acid Value | max. 0.10 | mgKOH/g | Substantially similar to JIS K 0070 |
| Volatile Matter | max. 0.1 | wt% | MCC Method (Total amount of water) , Volatile Gas Chromatography |
| Butylated Hydroxytoluene Content (as antioxidant) | 150 - 250 | ppm | — |
