Description

Polyoxy(Methyl-1,2-Ethanediyl), .Alpha.-Hydro-.Omega.-Hydroxy-, Polymer With 1,3-Diisocyanatomethylbenzene, Isocyanate-Terminated CAS NO 68442-25-1 is a specialized, isocyanate-terminated prepolymer derived from a polyether polyol and toluene diisocyanate (TDI). This product is engineered to serve as a high-performance building block in polyurethane chemistry, offering controlled reactivity and tailored physical properties in the final polymer. It is essential for formulators and manufacturers in the adhesives, sealants, coatings, and elastomers industries seeking to enhance product durability, flexibility, and chemical resistance.

Application

• High-Performance Polyurethane Adhesives & Sealants: Acts as a key prepolymer component for one- and two-part systems requiring excellent bond strength, flexibility, and moisture resistance.
• Elastomer and Castable Urethane Production: Used in the formulation of耐磨 (wear-resistant) rollers, wheels, gaskets, and industrial parts that demand a balance of toughness and elasticity.
• Protective and Industrial Coatings: Imparts enhanced chemical and abrasion resistance to coatings for floors, pipelines, and industrial equipment.
• Binder Systems for Composites: Serves as a reactive binder in the production of fiber-reinforced plastics and other composite materials.
• Footwear and Automotive Components: Utilized in the manufacture of soles, automotive interior parts, and other molded items requiring durable, flexible polyurethane.
• Potting and Encapsulation Compounds: Provides a protective, resilient matrix for electronic components and electrical assemblies.

Basic Information

Product Name	Polyoxy(Methyl-1,2-Ethanediyl), .Alpha.-Hydro-.Omega.-Hydroxy-, Polymer With 1,3-Diisocyanatomethylbenzene, Isocyanate-Terminated
CAS No.	68442-25-1
Molecular Formula	Contact for details
Molecular Weight	Contact for details (Varies by grade and polyol chain length)
Synonyms	Polyoxy(methyl-1,2-ethanediyl), α-hydro-ω-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene; Polyether polyol-TDI prepolymer; Isocyanate-terminated polyether prepolymer; TDI-based polyether prepolymer; Polyurethane prepolymer (polyether, TDI); TDI adduct of polypropylene glycol; PPG-TDI prepolymer; Reactive polyurethane intermediate.
EINECS	Contact for details

Quality Control

Our isocyanate-terminated prepolymers are manufactured under strict process controls to ensure batch-to-batch consistency and performance reliability. Quality is verified through a series of analytical tests including isocyanate (NCO) content, viscosity, and moisture analysis. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. Our production adheres to ISO 9001 quality management principles, and we support our global customers with relevant regulatory documentation.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F - 77°F). This product is hygroscopic (moisture-sensitive) and must be kept under a dry, inert atmosphere (e.g., nitrogen blanket) after opening to prevent premature reaction and gelation. Keep away from heat, sparks, open flames, and sources of ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Isocyanate (NCO) Content	Contact for details
Viscosity @ 25°C	Contact for details
Specific Gravity @ 25°C	Contact for details
Moisture Content	< 0.05%

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