Description

Benzene, 2,4-Diisocyanato-1-Methyl-, Polymers With Hydroxy-Terminated Polybutadiene is a specialized polyurethane prepolymer formed from toluene diisocyanate (TDI) and hydroxy-terminated polybutadiene (HTPB). This product is engineered to deliver exceptional flexibility, hydrolytic stability, and adhesion to low-surface-energy substrates. It is a critical raw material for formulators seeking to enhance the performance and durability of advanced elastomers and coatings. Key industries that rely on this polymer include aerospace, automotive, and specialized sealant manufacturing.

Application

• High-Performance Elastomer Formulation: Serves as a key prepolymer for producing castable polyurethane elastomers with superior low-temperature flexibility and dynamic properties.
• Specialty Adhesives & Sealants: Used in formulations requiring excellent adhesion to plastics, metals, and composites, particularly in challenging environments.
• Aerospace & Defense Components: Integral in the production of flexible binders, potting compounds, and vibration-damping materials for critical applications.
• Automotive Parts Manufacturing: Employed in the creation of durable gaskets, seals, and bushings that must withstand oils, fuels, and temperature extremes.
• Water-Resistant Coatings: Provides the backbone for coatings and linings that offer outstanding resistance to moisture and hydrolysis.
• Composite Material Binders: Acts as a resilient matrix binder in composite materials, enhancing impact resistance and toughness.

Basic Information

Product Name	Benzene, 2,4-Diisocyanato-1-Methyl-, Polymers With Hydroxy-Terminated Polybutadiene
CAS No.	68951-56-4
Molecular Formula	(C9H6N2O2 · C4H6O)n
Molecular Weight	Varies by formulation (Polymer)
Synonyms	TDI-HTPB Prepolymer; Polyurethane Prepolymer based on TDI and HTPB; Toluene Diisocyanate-Hydroxy Terminated Polybutadiene Adduct; HTPB-TDI Adduct; Isocyanate-Terminated Polybutadiene; Liquid Rubber Prepolymer; Polybutadiene Polyurethane Prepolymer; 2,4-TDI/HTPB Polymer
EINECS	Contact for details

Quality Control

Our production of this polyurethane prepolymer adheres to strict batch-to-batch consistency protocols. Quality is monitored through key parameters including isocyanate (NCO) content, viscosity, and moisture content, ensuring performance reliability for downstream formulations. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. Our quality management system supports compliance with relevant industry standards for advanced polymer materials.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry, and well-ventilated area at room temperature (15-25°C/59-77°F). Under recommended conditions, the product should be used promptly after opening to prevent moisture absorption and subsequent quality degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Viscous liquid, clear to amber
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Moisture Content	< 0.05%
Specific Gravity @ 25°C	Contact for details
Identification (IR)	Conforms to standard

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.