Description

2-Oxepanone, Polymer With 2,4-Diisocyanato-1-Methylbenzene And α-Hydro-ω-Hydroxypoly( Oxy-1,2-Ethanediyl) is a specialized polyurethane prepolymer or block copolymer, synthesized from ε-caprolactone (2-oxepanone), a modified toluene diisocyanate (TDI), and a polyethylene glycol (PEG) initiator. This engineered material is valued for its unique combination of properties derived from its segmented structure, offering tunable flexibility, biodegradability, and compatibility. It serves as a critical intermediate for advanced material scientists and formulators in industries such as medical devices, controlled-release systems, and high-performance elastomers, where precise polymer architecture dictates final product performance.

Application

• Biomedical Material Precursor: Key building block for synthesizing biodegradable polymers used in sutures, drug delivery matrices, and tissue engineering scaffolds.
• High-Performance Elastomers and Coatings: Imparts flexibility, toughness, and hydrolytic stability to polyurethane-based coatings, adhesives, sealants, and elastomers (CASE applications).
• Polymer Modification Agent: Employed to modify the properties of other polymers, enhancing impact resistance, flexibility, or biodegradability.
• Specialty Resins for 3D Printing: Serves as a component in advanced photopolymer or thermoplastic resins for additive manufacturing, providing specific mechanical properties.
• Hydrogel Synthesis: Acts as a cross-linkable macromer or prepolymer in the creation of hydrogels for absorbent materials or biomedical applications.

Basic Information

Product Name	2-Oxepanone, Polymer With 2,4-Diisocyanato-1-Methylbenzene And α-Hydro-ω-Hydroxypoly( Oxy-1,2-Ethanediyl)
CAS No.	68259-29-0
Molecular Formula	Typically represented as (C6H10O2·C9H6N2O2·C2nH4n+2On+1)x (Polymer)
Molecular Weight	Varies by grade (Polymer)
Synonyms	Poly(ε-caprolactone-co-polyethylene glycol-co-toluene diisocyanate); PCL-PEG-TDI Copolymer; ε-Caprolactone-PEG-TDI Terpolymer; Polycaprolactone-Polyethylene Glycol-Toluene Diisocyanate Block Copolymer; PEG-initiated PCL-TDI Polymer; Aliphatic-Aromatic Polyester-Urethane; Hydroxyl-Terminated PCL-PEG Prepolymer; Poly(ethylene glycol)-block-poly(ε-caprolactone-co-toluene diisocyanate)
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management protocols. Each batch is characterized using advanced analytical techniques to ensure consistency in molecular weight, composition, and functional group content. Certificates of Analysis (COA) are provided, detailing key parameters such as hydroxyl value, isocyanate content (NCO%), residual monomer levels, and molecular weight distribution (GPC). We support compliance with relevant frameworks for GMP and ISO 13485 for biomedical grades upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures typically between 15-25°C. This material is moisture-sensitive (hygroscopic) and may react with atmospheric moisture; containers must be kept sealed under a dry inert atmosphere (e.g., nitrogen) when not in use. Isolate from strong acids, bases, and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white waxy solid or viscous liquid
Identification (IR)	Conforms to structure
Hydroxyl Value (mg KOH/g)	As per grade (e.g., 20 - 100)
Isocyanate Content (NCO%)	< 0.5% (for hydroxyl-terminated grades) or as specified
Acid Value (mg KOH/g)	< 1.0
Moisture Content (KF)	< 0.1%
Molecular Weight (Mn, GPC)	As per grade (e.g., 2000 - 10000 Da)
Residual ε-Caprolactone (GC/HPLC)	< 0.1%
Glass Transition Temp (Tg, DSC)	Reported

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