WANNATE 3T8240

WANNATE 3T8240 provides a balanced reactivity profile with strong structural control.
WANNATE 3T8240 helps maintain foam stability during expansion and curing.
WANNATE 3T8240 supports consistent quality in both standard and complex polyurethane systems.

Synonyms: WANNATE 3T8240, Balanced-reactivity TDI system, Structural-control isocyanate, Polyurethane reactive component, Modified TDI blend, Wanhua TDI derivative, Flexible foam isocyanate, Industrial PU raw material, Controlled-expansion isocyanate, Polyurethane system component

WANNATE 3T8240 is a raw material that stands out with its low viscosity, pot life of up to 20 minutes, and good flexibility properties.
WANNATE 3T8240 is a modified TDI-based isocyanate, formulated to deliver a balanced combination of reactivity and structural control during polyurethane formation.

Rather than focusing purely on speed, this grade emphasizes maintaining foam integrity throughout the reaction, especially in systems where dimensional accuracy and surface stability are critical.
WANNATE 3T8240 performs reliably in both standard and slightly demanding processing conditions.

WANNATE 3T8240 is a polyester -based, TDI terminated urethane prepolymer that is solid at room temperature.
When cured with MOCA or DMTDA, this high performance material yields outstanding properities.

WANNATE 3T8240 elastomers are characterized by:
Excellent flex life
Excellent abrasion resistance
Good resistant to oils
Excellent tensile strength

Uses of WANNATE 3T8240:
WANNATE 3T8240 is used in flexible and molded polyurethane systems where consistent structure and controlled expansion are required.
WANNATE 3T8240 is suitable for applications such as seating components, cushioning materials, and technical foams that demand both resilience and uniformity.
WANNATE 3T8240 is also applied in formulations where maintaining surface quality and minimizing post-expansion deformation are important.

Stability and Reactivity of WANNATE 3T8240:

Chemical stability:
Stable under dry and controlled storage.

Reactivity:
Reacts with water.
Reacts with polyols.
Reacts with amines.

Conditions to avoid:
Moisture.
Excessive heat.
Contamination.

Incompatible materials:
Water.
Alcohols.
Strong bases.

Hazardous decomposition products:
Carbon dioxide (CO₂) may form.
Nitrogen oxides (NOₓ) may form.
Toxic vapors may be generated.

Handling and Storage of WANNATE 3T8240:

Handling:
Avoid direct exposure.
Ensure proper ventilation.

Storage:
Keep in tightly sealed containers.

Storage conditions:
Store in dry conditions.
Protect from humidity.

First Aid Measures of WANNATE 3T8240:

Inhalation:
Move to fresh air.
Monitor symptoms.

Skin contact:
Wash immediately with soap and water.

Eye contact:
Rinse thoroughly with water for at least 15 minutes.

Ingestion:
Seek immediate medical assistance.

Firefighting Measures of WANNATE 3T8240:

Extinguishing media:
Foam.
Carbon dioxide (CO₂).
Dry chemical.

Hazards:
Release of toxic gases under high temperature.

Protection:
Use full protective equipment.
Use breathing apparatus.

Accidental Release Measures of WANNATE 3T8240:

Personal precautions:
Ventilate area.
Use personal protective equipment (PPE).

Environmental precautions:
Avoid discharge into water systems.

Cleanup:
Collect with inert absorbent.
Dispose safely.

Exposure Controls / Personal Protection of WANNATE 3T8240:

Respiratory protection:
Use appropriate respirator if needed.

Hand protection:
Chemical-resistant gloves.

Eye protection:
Safety goggles.

Skin protection:
Protective clothing.

Identifiers of WANNATE 3T8240:
Chemical Type: Modified TDI system
CAS Number: Mixture
EC Number: Not assigned

Properties of WANNATE 3T8240:
Appearance: Light yellow to slightly amber liquid
Odor: Characteristic isocyanate odor
Density: ~1.22–1.25 g/cm³
Viscosity: Low to medium
Reactivity: Balanced (neither too fast nor delayed)
Processing behavior: Stable expansion with reduced deformation tendency

Hardness/Shore A: 60±2
100% Modulus/MPa: 3.1
300% Modulus/MPa: 3.7
Tensile Strength/MPa: 30.6
Elongation at Break/%: 560
Tear Strength, Die C pli/( KN/m): 43.6
Rebound(23°C)/%: 35
Din abrasion/mm3: 37

Specifications of WANNATE 3T8240:
NCO, %: 3.1-3.5
Appearance @ 25°C: Solid free from contamination
Brookfield Viscosity@100°C，mPa·s: 500-1000