Description

Poly(Oxy-1,2-Ethanediyl), .Alpha.-Hydro-.Omega.-Hydroxy-, Polymer With 1,1'-Methylenebis[4-Isocyanatocyclohexane], 1-Decanol-Blocked is a specialized, blocked aliphatic polyurethane prepolymer designed for controlled reactivity. This compound is critical for formulators requiring a stable, one-component system that cures upon exposure to heat or atmospheric moisture, releasing the blocking agent. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries seeking enhanced weatherability, chemical resistance, and low yellowing in their final products.

Application

• High-Performance Coatings: As a key resin component in automotive clear coats, industrial maintenance paints, and plastic coatings where excellent gloss retention and UV stability are paramount.
• Adhesives & Sealants: Formulation of heat-activated structural adhesives, laminating adhesives, and moisture-curing sealants with strong bonding and flexibility.
• Elastomers and Castables: Production of durable rollers, wheels, gaskets, and other molded polyurethane parts requiring a balance of toughness and environmental resistance.
• Textile and Leather Finishes: Used in coatings for synthetic leather, waterproof fabrics, and other technical textiles to provide a durable, flexible finish.
• Fiber Optic Coatings: As a protective secondary coating layer due to its excellent mechanical properties and low moisture permeability.
• Composite Materials: Acting as a matrix resin or modifier in certain composite systems to improve impact resistance and interfacial adhesion.

Basic Information

Item	Detail
Product Name	Poly(Oxy-1,2-Ethanediyl), .Alpha.-Hydro-.Omega.-Hydroxy-, Polymer With 1,1'-Methylenebis[4-Isocyanatocyclohexane], 1-Decanol-Blocked
CAS No.	70879-50-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Blocked Aliphatic Polyurethane Prepolymer; HDI-Blocked Prepolymer (based on Polyether Polyol); 1-Decanol-blocked HDI prepolymer; Polyether polyol, polymer with 1,1'-methylenebis[4-isocyanatocyclohexane], 1-decanol-blocked; Aliphatic moisture-curing polyurethane resin; Thermally latent polyurethane curing agent; Hexamethylene diisocyanate (HDI) based blocked prepolymer.
EINECS	Contact for details

Quality Control

Our blocked polyurethane prepolymers are manufactured under a strict quality management system. Each batch is tested for critical parameters including NCO content (blocked), viscosity, solids content, and color to ensure consistent performance and shelf stability. Certificates of Analysis (COA) documenting these specifications are available for every shipment upon request, supporting your quality assurance and regulatory compliance needs.

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 and 77°F). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent premature reaction with atmospheric moisture. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
Solids Content	≥ 99.0 %
Viscosity (25°C)	Contact for details
Blocked NCO Content	Contact for details
Color (Gardner)	≤ 2
Specific Gravity (25°C)	Contact for details

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