Description

2-Oxepanone, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol And 5-Isocyanato-1-(Isocyanatomethyl)-1,3,3-Trimethylcyclohexane, Isocyanate-Terminated is a specialized, high-performance polyurethane prepolymer based on a caprolactone polyol and an aliphatic isocyanate. This chemistry provides a unique balance of flexibility, weatherability, and chemical resistance, making it a critical raw material for demanding industrial applications. It is primarily sought by formulators in the coatings, adhesives, sealants, and elastomers (CASE) industries who require durable, light-stable, and high-performance end products.

Application

• High-Performance Coatings: Used as a key component in formulating aliphatic polyurethane coatings for automotive clear coats, industrial maintenance paints, and protective marine coatings where excellent gloss retention and UV resistance are critical.
• Elastomers and Sealants: Serves as a prepolymer for manufacturing cast, molded, or sprayed polyurethane elastomers and sealants used in construction, automotive, and industrial equipment due to its good mechanical properties and hydrolytic stability.
• Adhesives and Binders: Employed in the synthesis of reactive hot-melt adhesives, structural adhesives, and specialty binders that require strong bonding, flexibility, and resistance to environmental factors.
• Fiber Optic and Cable Coatings: Ideal for protective secondary coatings on optical fibers and wire/cable jacketing, offering excellent flexibility, low moisture absorption, and long-term durability.
• Composite Materials: Used as a matrix resin or modifier in fiber-reinforced composites for automotive and aerospace applications, contributing to toughness and impact resistance.
• 3D Printing Resins: A potential component in advanced photopolymer resins for SLA/DLP 3D printing, enabling the production of parts with enhanced mechanical and chemical properties.

Basic Information

Product Name	2-Oxepanone, Polymer With 2-Ethyl-2-(Hydroxymethyl)-1,3-Propanediol And 5-Isocyanato-1-(Isocyanatomethyl)-1,3,3-Trimethylcyclohexane, Isocyanate-Terminated
CAS No.	68954-65-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details (Polymer)
Synonyms	Polycaprolactone polyol, isophorone diisocyanate terminated; IPDI-terminated polycaprolactone prepolymer; Aliphatic polyurethane prepolymer based on PCL and IPDI; Poly(ε-caprolactone) diol terminated with isophorone diisocyanate; Isocyanate-functional polycaprolactone; Polyurethane prepolymer CAS 68954-65-4; Caprolactone-based polyurethane resin
EINECS	Contact for details

Quality Control

Our production of this polyurethane prepolymer adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as isocyanate (NCO) content, viscosity, and color are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing assay, physical properties, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures recommended for polyurethane prepolymers, typically between 15°C and 25°C. This product is hygroscopic (moisture-sensitive) and must be protected from atmospheric moisture to prevent premature reaction and gelation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
NCO Content	Contact for details
Viscosity (25°C)	Contact for details
Color (Gardner)	≤ 2
Specific Gravity (25°C)	Contact for details
Moisture (Karl Fischer)	≤ 0.05%
Identification (IR)	Conforms

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