Description

2,4-Diisocyanato-1-Methylbenzene, Trimethylolpropane, 1,3-Butylene Glycol Polymer is a specialized polyurethane prepolymer derived from toluene diisocyanate (TDI) and polyols. This compound is engineered to serve as a high-performance building block, offering excellent reactivity and cross-linking capabilities for formulating durable polymeric materials. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance product toughness, chemical resistance, and adhesion properties.

Application

• High-Performance Coatings: Used as a key resin component in two-component polyurethane coatings for industrial, automotive, and marine applications, providing exceptional durability and gloss retention.
• Adhesives & Sealants: Serves as a prepolymer in the formulation of structural and elastic adhesives and sealants, offering strong bonding strength and flexibility.
• Elastomers: A critical raw material for manufacturing cast, thermoplastic, and millable polyurethane elastomers used in wheels, rollers, and industrial parts.
• Binder Systems: Employed in composite materials and foundry binders to improve mechanical properties and thermal stability.
• Waterproofing Membranes: Utilized in liquid-applied roofing and waterproofing systems for its excellent weatherability and seamless application.
• Flexible Foams: Can be modified for use in certain types of flexible polyurethane foam applications requiring specific resilience profiles.

Basic Information

Product Name	2,4-Diisocyanato-1-Methylbenzene, Trimethylolpropane, 1,3-Butylene Glycol Polymer
CAS No.	25087-02-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	TDI-TMP-BG Prepolymer; TDI-based Polyurethane Prepolymer; Toluene Diisocyanate Trimethylolpropane Butylene Glycol Adduct; Polyurethane Resin Prepolymer; Isocyanate-terminated Prepolymer; CAS 25087-02-9; Urethane Prepolymer; TDI Polyol Adduct
EINECS	Contact for details

Quality Control

Our 2,4-Diisocyanato-1-Methylbenzene, Trimethylolpropane, 1,3-Butylene Glycol Polymer is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent performance, including measurement of NCO content, viscosity, and residual monomer levels. Certificates of Analysis (COA) are provided to guarantee compliance with agreed specifications and support your quality assurance protocols.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures recommended for polyurethane prepolymers (typically between 15-25°C). This product is hygroscopic (moisture-sensitive). Keep away from heat, sparks, open flames, and sources of ignition. Isolate from amines, alcohols, water, and other compounds containing active hydrogen to prevent premature polymerization.

Specification

Item	Specification
Appearance	Clear, pale yellow to amber liquid
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Specific Gravity (25°C)	Contact for details
Residual TDI Monomer	< 0.5% (typical)
Color (Gardner)	≤ 4
Moisture Content	< 0.05%

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