Description

α-Hydro-ω-Hydroxypoly(Oxy-1,2-Ethanediyl) Polymer With 1,1'- Methylenebis[4-Isocyanatocyclohexane], Ethoxylated (C=12～14)- Secondary Alcs.-Blocked is a specialized, high-performance blocked polyurethane prepolymer designed for advanced material formulations. This compound matters for its ability to provide controlled reactivity, enabling the development of durable, flexible, and chemically resistant coatings, adhesives, and elastomers under precise thermal conditions. It is essential for manufacturers in the automotive, industrial coatings, electronics encapsulation, and high-performance adhesive sectors seeking reliable, shelf-stable polymer precursors.

Application

• One-Component (1K) Polyurethane Coatings: As a thermally activated crosslinker for high-gloss, chemical-resistant industrial and automotive topcoats.
• Adhesives and Sealants: For formulating high-strength, flexible structural adhesives and moisture-curing sealants with extended pot life.
• Elastomer Production: As a key intermediate in the manufacture of castable polyurethane elastomers for rollers, gaskets, and industrial parts.
• Encapsulation and Potting Compounds: In electronics for protecting sensitive components from moisture, vibration, and thermal shock.
• Fiber and Textile Finishing: To impart durable water repellency, softness, and abrasion resistance to technical textiles.
• Composite Materials: As a matrix resin or modifier to enhance the toughness and interfacial adhesion in fiber-reinforced composites.

Basic Information

Product Name	α-Hydro-ω-Hydroxypoly(Oxy-1,2-Ethanediyl) Polymer With 1,1'- Methylenebis[4-Isocyanatocyclohexane], Ethoxylated (C=12～14)- Secondary Alcs.-Blocked
CAS No.	397250-73-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked HDI-based Polyurethane Prepolymer; Ethoxylated C12-14 Secondary Alcohol-blocked Polyether Polyol/HDI Polymer; HDI Trimer blocked with Ethoxylated Alcohol; Poly(oxy-1,2-ethanediyl), α-hydro-ω-hydroxy-, polymer with 1,1'-methylenebis[4-isocyanatocyclohexane], C12-14-secondary alkoxylates; Thermally Latent Polyurethane Crosslinker; Blocked Polyisocyanate Adduct; Aliphatic Blocked Polyisocyanate.
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems. Every batch undergoes comprehensive analysis to ensure consistent performance, including measurement of blocked isocyanate content, viscosity, color, and moisture levels. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications and supporting your own quality assurance protocols.

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). Prolonged exposure to atmospheric moisture must be avoided to prevent premature reaction and product degradation. Keep away from heat sources and open flames.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (Gardner)	≤ 3
Viscosity (at 25°C)	Contact for details
Blocked NCO Content	Contact for details
Solid Content	Contact for details
Moisture (Karl Fischer)	≤ 0.1%
Specific Gravity (at 25°C)	Contact for details

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