Description

2-Oxepanone, Polymer With 2,4-Diisocyanato-1-Methylbenzene is a specialized polyurethane prepolymer derived from ε-caprolactone and toluene diisocyanate (TDI). This material is engineered to provide a unique balance of flexibility, hydrolytic stability, and chemical resistance, making it a critical intermediate for high-performance formulations. It is primarily sought after by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for advanced biomedical and composite material applications where tailored polymer properties are essential.

Application

• High-Performance Coatings: Used as a key resin component in durable, flexible, and chemical-resistant industrial, automotive, and marine coatings.
• Specialty Adhesives & Sealants: Serves as a prepolymer base for polyurethane adhesives and sealants requiring excellent adhesion, elasticity, and moisture resistance.
• Medical-Grade Elastomers: An important intermediate for synthesizing biocompatible polyurethanes used in medical devices, tubing, and implants due to its stability and purity potential.
• Composite Materials: Acts as a matrix resin or toughening agent in fiber-reinforced composites for aerospace, automotive, and sporting goods.
• Flexible Foams and Cast Elastomers: Utilized in the production of specialized polyurethane foams and cast parts that demand a combination of softness, strength, and resilience.
• Waterborne Polyurethane Dispersions (PUDs): A precursor for creating stable aqueous polyurethane dispersions used in eco-friendly coatings and finishes.

Basic Information

Product Name	2-Oxepanone, Polymer With 2,4-Diisocyanato-1-Methylbenzene
CAS No.	52136-46-6
Molecular Formula	(C6H10O2·C9H6N2O2)n
Molecular Weight	Varies (Polymer)
Synonyms	Poly(ε-caprolactone-co-toluene diisocyanate); Caprolactone-TDI Polymer; Poly(caprolactone/TDI); TDI-ε-Caprolactone Copolymer; Polyurethane Prepolymer from Caprolactone and TDI; 2,4-Toluene Diisocyanate-Caprolactone Copolymer; Poly[(2-oxepanone)-co-(2,4-diisocyanato-1-methylbenzene)]; PCL-TDI Prepolymer
EINECS	Contact for details

Quality Control

Our production of 2-Oxepanone, Polymer With 2,4-Diisocyanato-1-Methylbenzene adheres to stringent quality management protocols. Each batch is characterized for critical parameters including NCO content, viscosity, residual monomer levels, and molecular weight distribution to ensure consistent performance. Certificates of Analysis (COA) detailing these specifications are provided with every shipment. We support compliance with relevant regulatory frameworks such as REACH and can tailor quality standards to meet specific customer requirements for industrial or advanced applications.

Storage

Preserve in a tightly closed, moisture-proof container under a dry, inert atmosphere (e.g., nitrogen blanket). Store in a cool, dry, well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Protect from light, heat, and moisture. Isolate from strong bases and organic solvents. Under these conditions, the product is typically stable for 24 months from the date of manufacture when stored in the original, unopened container.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Conforms to structure
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Residual TDI Monomer	< 0.1% (by HPLC)
Residual Caprolactone Monomer	< 0.5% (by GC)
Water Content (KF)	< 0.05%
Specific Gravity @ 25°C	~1.10 - 1.15

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