What Are the Key Applications and Benefits of Tris(p-isocyanatophenyl)amine 85% (TIPA)?
Technical Introduction
Tris(p-isocyanatophenyl)amine (TIPA) 85% is a high-performance trifunctional aromatic isocyanate, featuring three reactive –NCO groups connected through a central nitrogen atom. This unique chemical structure provides excellent crosslinking capabilities, making it a valuable raw material for producing high-performance polyurethane coatings, adhesives, elastomers, and specialty polymers.
With an 85% active content, TIPA offers a balance between reactivity and handling safety, making it suitable for demanding industrial applications where chemical resistance, thermal stability, and mechanical strength are critical.
Applications
High-Performance Polyurethane Coatings
Provides superior hardness, chemical resistance, and weather durability.
Ideal for automotive, aerospace, and industrial protective coatings.
Adhesives and Sealants
Enhances adhesion to metals, plastics, and composites.
Offers strong bonding strength with minimal shrinkage.
Elastomers and Casting Materials
Improves tensile strength, abrasion resistance, and dimensional stability.
Electronics and Electrical Insulation
Used in potting and encapsulation compounds for heat and chemical resistance.
Specialty Polymers
Acts as a crosslinker in advanced polymer systems for improved rigidity and heat stability.
Advantages
High Crosslink Density – Three reactive isocyanate groups provide robust network formation.
Excellent Thermal and Chemical Resistance – Suitable for harsh environments.
Strong Adhesion – Bonds well to diverse substrates including metals and engineering plastics.
Long-Term Durability – Maintains performance under UV, moisture, and chemical exposure.
Versatile Reactivity – Compatible with polyols, amines, and hydroxyl-containing compounds.
Typical Parameters
| Property | Value |
|---|---|
| Appearance | Light yellow to brown liquid |
| Active Content | 85% |
| NCO Content | ~15–17% |
| Viscosity (25°C) | 1,000–3,000 mPa·s |
| Density (25°C) | ~1.20 g/cm³ |
| Flash Point | >150°C |
| Storage Temperature | 5–35°C, dry and sealed |
FAQs
Q1: What is the difference between TIPA 85% and 100% active content?
A: The 85% grade contains an inert carrier or stabilizer for improved handling safety and viscosity control, while 100% active content offers maximum reactivity but requires stricter storage conditions.
Q2: Is TIPA compatible with water-based systems?
A: TIPA is moisture-sensitive and primarily used in solvent-based or anhydrous systems. Exposure to water will cause premature curing.
Q3: How should TIPA be stored?
A: Store in tightly sealed containers under nitrogen blanket, in a cool, dry place, away from moisture and heat.
Q4: Can TIPA improve coating flexibility?
A: Yes, when formulated with flexible polyols, TIPA can enhance both toughness and elasticity without compromising hardness.
Q5: Is special safety equipment required for handling TIPA?
A: Yes. Use gloves, goggles, and proper ventilation. Avoid skin and eye contact due to the reactive isocyanate groups.
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