Description

2-Oxepanone, polymer with 1,4-butanediol, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, 1,1'-methylenebis[4-isocyanatocyclohexane] and 2,2'-oxybis[ethanol] is a specialized polyurethane prepolymer or resin, synthesized from caprolactone (2-oxepanone), butanediol, and a blend of aliphatic isocyanates. This engineered polymer is valued for its excellent weatherability, hydrolysis resistance, and mechanical flexibility, making it a critical component in high-performance coatings and elastomers. It is primarily sought by formulators in the automotive, industrial coating, and specialty adhesive sectors who require durable, light-stable materials.

Application

• High-performance polyurethane coatings for automotive clearcoats and refinish systems requiring superior gloss retention and UV resistance.
• Elastomers and sealants for industrial and construction applications where flexibility and durability are paramount.
• Adhesives and binders for specialty composites and laminates in the aerospace and marine industries.
• Protective coatings for outdoor structures, industrial equipment, and flooring that demand long-term chemical and abrasion resistance.
• Resin modifier to enhance the toughness, flexibility, and weathering properties of other polymer systems.

Basic Information

Item	Details
Product Name	2-Oxepanone, polymer with 1,4-butanediol, 5-isocyanato-1-(isocyanatomethyl)-1,3,3-trimethylcyclohexane, 1,1'-methylenebis[4-isocyanatocyclohexane] and 2,2'-oxybis[ethanol]
CAS No.	123171-64-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Aliphatic polyurethane prepolymer based on caprolactone; Polycaprolactone polyol, polymer with IPDI, H12MDI, and diethylene glycol; Isophorone diisocyanate (IPDI) / Dicyclohexylmethane-4,4'-diisocyanate (H12MDI) / Polycaprolactone copolymer; PU prepolymer, aliphatic, weatherable grade; Light-stable polyurethane resin; CAS 123171-64-2 polymer
EINECS	Contact for details

Quality Control

Our production of this polyurethane polymer adheres to strict batch-to-batch consistency protocols, with quality parameters including isocyanate (NCO) content, viscosity, and hydroxyl value tightly controlled. Each lot is supported by a comprehensive Certificate of Analysis (COA) detailing key specifications. We operate under a quality management system aligned with industry best practices to ensure material performance and reliability for your formulations.

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 room temperature (15-25°C/59-77°F). Keep containers tightly sealed under a dry, inert atmosphere (e.g., nitrogen blanket) to prevent moisture absorption and premature reaction. Isolate from sources of 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
Hydroxyl Value (mg KOH/g)	Contact for details
Solid Content	Contact for details
Color (Gardner)	≤ 2
Moisture Content	≤ 0.05%

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