Description

2-Oxepanone, Polymer With 1,4-Butanediol, 1,1-Methylenebis4-Isocyanatocyclohexane And 2,2-Oxybisethanol CAS NO 176303-32-5 is a specialized polyurethane prepolymer or resin derived from ε-caprolactone, butanediol, hydrogenated MDI (H12MDI), and diethylene glycol. This engineered polymer is valued for its excellent mechanical properties, hydrolytic stability, and versatility in creating high-performance materials. It is primarily sought by formulators and manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for advanced composite and biomedical applications requiring tailored polymer performance.

Application

• High-Performance Coatings & Paints: Used as a key resin component in formulating durable, flexible, and chemical-resistant industrial, automotive, and marine coatings.
• Advanced Adhesives & Sealants: Serves as a base polymer for structural adhesives and flexible sealants requiring strong bonding and long-term environmental resistance.
• Specialty Elastomers & Urethane Castings: Employed in the production of cast polyurethane elastomers for rollers, wheels, gaskets, and impact-absorbing components.
• Biomedical & Controlled Release Systems: Potential use in biocompatible coatings for medical devices or as a matrix for controlled drug delivery due to its tunable degradation profile.
• Composite Materials: Acts as a matrix resin or toughening agent in fiber-reinforced composites for aerospace, automotive, and sporting goods.
• Flexible Foams & Cushioning: Can be formulated into microcellular or integral skin foams for specialized cushioning applications.

Basic Information

Product Name	2-Oxepanone, Polymer With 1,4-Butanediol, 1,1-Methylenebis4-Isocyanatocyclohexane And 2,2-Oxybisethanol
CAS No.	176303-32-5
Molecular Formula	(C6H10O2.C4H10O2.C14H22N2O2.C4H10O3)x
Molecular Weight	Polymer - varies by formulation
Synonyms	Poly(ε-caprolactone-co-butylene adipate) urethane prepolymer; H12MDI-based polycaprolactone polyol prepolymer; Hydrogenated MDI polycaprolactone copolymer; Polyurethane resin from ε-caprolactone, 1,4-butanediol, H12MDI, and DEG; Caprolactone polyol terminated with H12MDI; 4,4'-Methylenebis(cyclohexyl isocyanate) polymer with diethylene glycol, 1,4-butanediol and ε-caprolactone; Aliphatic polyurethane prepolymer based on polycaprolactone
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to rigorous quality control protocols to ensure batch-to-batch consistency and performance. Key parameters such as NCO content, hydroxyl value, viscosity, and molecular weight distribution are strictly monitored. A comprehensive Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed, moisture-proof 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 material is moisture-sensitive (hygroscopic) and may react with atmospheric moisture; ensure containers are sealed under a dry inert atmosphere (e.g., nitrogen) after opening.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
NCO Content	Contact for details
Hydroxyl Value (OH#)	Contact for details
Viscosity @ 25°C	Contact for details
Solid Content	Contact for details
Color (Gardner)	≤ 3
Moisture Content (Karl Fischer)	≤ 0.05%

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