Description

2-Oxepanone, Polymer With 1,4-Butanediol And 1,1-Methylenebis4-Isocyanatobenzene CAS NO 26354-06-3 is a high-performance polyurethane prepolymer derived from ε-caprolactone, butanediol, and MDI. This specialized polymer is engineered to deliver exceptional hydrolytic stability, flexibility, and biocompatibility, making it a critical raw material for advanced material synthesis. It is primarily sought by manufacturers in the medical device, specialty adhesive, and high-performance elastomer sectors seeking to enhance product durability and performance.

Application

• Medical Device Coatings: Used as a key component in biocompatible, flexible coatings for catheters, guidewires, and implantable devices.
• Specialty Adhesives & Sealants: Serves as a base polymer for high-strength, moisture-curing polyurethane adhesives with excellent adhesion to various substrates.
• Elastomer Fabrication: Employed in the production of thermoplastic polyurethane (TPU) elastomers for demanding applications requiring toughness and resilience.
• Controlled-Release Matrices: Utilized in pharmaceutical and agrochemical formulations to create biodegradable matrices for sustained active ingredient delivery.
• Fiber & Textile Finishing: Acts as a durable, flexible finishing agent to improve the wear resistance and hand-feel of technical textiles.
• Composite Materials: Incorporated as a toughening agent or matrix resin in polymer composites to improve impact resistance and flexibility.

Basic Information

Product Name	2-Oxepanone, Polymer With 1,4-Butanediol And 1,1-Methylenebis4-Isocyanatobenzene
CAS No.	26354-06-3
Molecular Formula	(C6H10O2·C4H10O2·C15H10N2O2)n
Molecular Weight	Varies (Polymer)
Synonyms	Poly(ε-caprolactone-co-butylene adipate) urethane; Polycaprolactone-butanediol-MDI prepolymer; PCL-based polyurethane; Caprolactone/butanediol/MDI copolymer; 4,4'-Methylenebis(phenyl isocyanate), polymer with 1,4-butanediol and ε-caprolactone; Poly[(butylene adipate)-co-(ε-caprolactone)] urethane; MDI-terminated PCL prepolymer; Aliphatic-aromatic polyurethane based on caprolactone
EINECS	Contact for details

Quality Control

Our production of this polyurethane prepolymer adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including determination of NCO content, viscosity, molecular weight distribution (GPC), and residual monomer levels, to ensure consistency and performance. Certificates of Analysis (COA) detailing all specifications are provided with each shipment. We operate in compliance with ISO 9001 quality standards, and our facility can support production under cGMP guidelines for medical-grade applications upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a recommended temperature of 15-25°C. This material is moisture-sensitive (hygroscopic) and may react with atmospheric moisture; containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) after initial opening. Keep away from strong acids, bases, and sources of heat or ignition.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Identification (IR)	Conforms to structure
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Molecular Weight (Mw)	Contact for details
Residual Monomer (HPLC)	< 0.1%
Water Content (KF)	< 0.05%
Specific Gravity	Contact for details

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