3,3′-Dimethyl-4,4′-biphenylene diisocyanate (CAS 91-97-4) User Guide
Table of Contents
1. Product Overview & Specifications
CAS Number: 91-97-4
Molecular Formula: C₁₆H₁₀N₂O₂
Appearance: White to pale yellow crystalline powder
Purity: ≥99%
Melting Point: 160-165°C
Density: 1.28 g/cm³
Comparative Analysis
| Parameter | 3,3′-Dimethyl-4,4′-biphenylene diisocyanate | TDI (Toluene Diisocyanate) | MDI (Methylene Diphenyl Diisocyanate) |
|---|---|---|---|
| Thermal Stability | Superior | Moderate | High |
| Reactivity | Controlled | High | Moderate |
| Applications | High-performance polymers | Flexible foams | Rigid foams |
2. Key Applications & Industrial Uses
- Polyurethane Elastomers: Enhances mechanical strength and heat resistance.
- High-Temperature Coatings: Used in aerospace and automotive coatings.
- Adhesives: Improves bonding under extreme conditions.
- Electronic Encapsulants: Protects components from thermal degradation.
3. Practical Use Cases
Case 1: Automotive Sealing Systems
Injected into polyurethane formulations to create seals resistant to engine heat (>150°C).
Case 2: Industrial Pipe Coatings
Formulated into epoxy coatings preventing corrosion in chemical processing plants.
4. Client Success Stories
Client A: Automotive Components Inc.
Challenge: Needed elastomers stable at 140°C for electric vehicle batteries.
Solution: 15% additive of CAS 91-97-4 increased thermal tolerance by 32%.
Client B: Advanced Coatings Ltd.
Challenge: Coating delamination in marine environments.
Solution: 0.5% integration improved salt spray resistance to 2,000+ hours (ASTM B117).
5. Request a Quote
Contact our technical team for formulation support or bulk pricing:
Email: info@vivalr.com
Phone: (86) 15866781826
Why choose us?
– ISO 9001-certified production
– 24/7 technical support
– Customized packaging solutions
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