High-Purity PTMEG 2000 Poly(tetrahydrofuran) with Hydrolytic Stability and Low-Temperature Resistance for Polyurethane Glycol Applications
Price:
Negotiable
MOQ:
500g, 1kg or 25kg for sample, 1000kg for commercial order
Delivery Time:
In 3 working days
Brand:
Zorui
Product Description
PTMEG 2000 Poly(tetrahydrofuran) Polyol (CAS 25190-06-1)
Product Introduction
Poly(tetrahydrofuran) (PTMEG) 2000 is a high-purity, linear polyether glycol with a molecular weight of ~2000 g/mol. As a key intermediate in polyurethane chemistry, PTMEG 2000 offers exceptional flexibility, hydrolytic stability, and low-temperature resistance. Its CAS number, 25190-06-1, ensures precise identification for industrial and regulatory purposes. Ideal for synthesizing premium elastomers, adhesives, and fibers, PTMEG 2000 delivers superior performance in demanding applications.
Physical and Chemical Specifications
| Property | Specification | Test Method |
|---|---|---|
| Molecular Weight | 2000 ± 100 g/mol | GPC |
| Hydroxyl Value (mg KOH/g) | 54.0 - 57.0 | ASTM D4274 |
| Acid Value (mg KOH/g) | ≤ 0.05 | ASTM D4662 |
| Water Content (%) | ≤ 0.03 | Karl Fischer |
| Color (APHA) | ≤ 20 | ASTM D1209 |
| Viscosity @ 40°C (cSt) | 400 - 600 | ASTM D445 |
| Melting Point (°C) | 25 - 30 | DSC |
| Flash Point (°C) | > 200 | ASTM D93 |
| CAS Number | 25190-06-1 | -- |
Product Functions
- Flexibility Enhancer: Imparts excellent elasticity and resilience to polyurethanes
- Hydrolytic Stabilizer: Resists degradation from moisture, ensuring long-term durability
- Low-Temperature Performer: Maintains flexibility down to -60°C
- Process Aid: Compatible with isocyanates for smooth polymerization
- Soft Segment Builder: Forms soft segments in TPU, spandex, and adhesives
Application Areas
- Spandex Fibers: Primary raw material for elastic textiles (e.g., sportswear, lingerie)
- Thermoplastic Polyurethane (TPU): Footwear, automotive seals, and industrial hoses
- Elastomers: Cast wheels, conveyor belts, and impact-resistant parts
- Adhesives & Coatings: High-performance sealants and waterproof coatings
- Specialty Products: Medical tubing, synthetic leather, and eco-friendly lubricants
Manufacturing Process
PTMEG 2000 is synthesized via cationic ring-opening polymerization of tetrahydrofuran (THF):
- Initiation: THF monomers activated by acid catalysts (e.g., fluorosulfonic acid)
- Polymerization: Controlled chain growth to achieve MW ~2000 g/mol
- Termination: Neutralization and removal of catalysts
- Purification: Vacuum distillation to remove residual THF and water
- Stabilization: Addition of antioxidants (e.g., BHT) for shelf-life extension
Quality Control: Rigorous HPLC/GPC analysis ensures molecular weight consistency.
Why Choose Our PTMEG 2000
- Purity Guarantee: >99.8% purity with minimal impurities (acid value ≤0.05)
- Batch Consistency: Tight molecular weight distribution (±100 g/mol)
- Global Compliance: REACH, ISO 9001, and FDA-compliant for sensitive applications
- Supply Reliability: 10,000+ tons/year capacity with on-time global shipping
- Technical Support: Dedicated R&D team for formulation optimization and troubleshooting
- Sustainability: Eco-certified production with low VOC emissions
Frequently Asked Questions
Is PTMEG 2000 safe for skin-contact applications?
Yes! It meets FDA standards for spandex used in apparel and medical devices.
What packaging options are available?
200kg steel drums, 1-ton IBCs, or bulk tankers. Nitrogen-purged for stability.
How long is the shelf life?
12 months when stored below 30°C in sealed containers.
Can PTMEG 2000 replace polyester polyols?
Absolutely—it offers superior hydrolysis resistance vs. polyester-based systems.
Do you provide custom molecular weights?
Yes! We offer PTMEG grades from 650 to 3000 g/mol.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shanxi Zorui Biotechnology Co., Ltd.
Location
Huiquan Square F14, No.1450 SH Caohejing Hi-Tech Park, Datong, Shanxi, China
Contact Person
Julie