Description

Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene and α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)], isocyanate-terminated is a specialized, high-performance polyurethane prepolymer. This compound is engineered to serve as a critical reactive intermediate, offering superior adhesion, flexibility, and chemical resistance in formulated end-products. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking to enhance the durability and performance of their materials.

Application

• High-Performance Coatings & Paints: Used as a binder or crosslinker in industrial, marine, and protective coatings for exceptional weatherability and chemical resistance.
• Adhesives & Sealants: A key component in formulating polyurethane-based structural adhesives, sealants, and potting compounds with strong bonding and elastic properties.
• Elastomer Production: Serves as a prepolymer for casting durable polyurethane elastomers used in wheels, rollers, and industrial parts.
• Composite Materials: Employed in the production of fiber-reinforced composites and laminates for the automotive and aerospace sectors.
• Waterproofing Membranes: Integral to liquid-applied roofing and waterproofing systems due to its excellent moisture-curing properties and film integrity.
• Flexible Foams & Cushioning: Used in specialized formulations for high-resilience and viscoelastic (memory) foam applications.

Basic Information

Product Name	Poly(oxy-1,4-butanediyl), α-hydro-ω-hydroxy-, polymer with 1,3-diisocyanatomethylbenzene and α-hydro-ω-hydroxypoly[ oxy(methyl-1,2-ethanediyl)], isocyanate-terminated
CAS No.	68611-27-8
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Polyurethane prepolymer based on PTMEG, MDI, and PEG; Isocyanate-terminated polyether polyurethane; Poly(tetramethylene ether glycol)-co-poly(ethylene glycol) urethane prepolymer; MDI/PTMEG/PEG prepolymer; Reactive polyurethane resin; Urethane prepolymer CAS 68611-27-8; Telechelic polyurethane oligomer
EINECS	Contact for details

Quality Control

Our polyurethane prepolymers are manufactured under strict quality management systems to ensure batch-to-batch consistency and performance reliability. Each lot is tested against stringent in-house specifications for critical parameters such as isocyanate (NCO) content, viscosity, and moisture levels. A Certificate of Analysis (COA) documenting these results is provided with every shipment to support your quality assurance protocols.

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 temperatures recommended on the specific product label or Safety Data Sheet (typically 15-25°C). Use under a dry air or nitrogen atmosphere to prevent premature curing and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms
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.