Description

2-Oxepanone, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] is a high-performance polyurethane prepolymer derived from caprolactone and methylene diphenyl diisocyanate (MDI). This material matters for its excellent mechanical properties, hydrolytic stability, and versatility in creating durable, flexible end-products. It is primarily needed by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as for producing specialty polyurethane foams and biomedical materials.

Application

• High-Performance Coatings: Used as a key resin in formulating durable, chemical-resistant, and flexible industrial and protective coatings.
• Adhesives & Sealants: Serves as a base polymer for structural adhesives and high-strength sealants with excellent bonding and elasticity.
• Elastomers and Castables: Essential for manufacturing polyurethane elastomers, gaskets, wheels, and impact-absorbing components.
• Specialty Foams: Used in the production of microcellular and rigid foams for technical and insulation applications.
• Biomedical Materials: Potential use in controlled-release drug delivery systems and biocompatible medical device coatings due to its stability.
• Fiber & Textile Finishing: Applied as a coating or binder to enhance the durability and water resistance of technical textiles.

Basic Information

Product Name	2-Oxepanone, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene]
CAS No.	26761-25-1
Molecular Formula	(C6H10O2)x·(C15H10N2O2)y
Molecular Weight	Polymer - Contact for details
Synonyms	Poly(ε-caprolactone-co-MDI); Caprolactone-MDI Prepolymer; Polycaprolactone-MDI Copolymer; MDI-Caprolactone Polymer; Polyurethane Prepolymer from Caprolactone and MDI; PCL-MDI; 4,4'-Methylenebis(phenyl isocyanate) polymer with ε-caprolactone; Isocyanate-terminated polycaprolactone prepolymer
EINECS	Contact for details

Quality Control

Our production of 2-Oxepanone, Polymer With 1,1'-Methylenebis[4-Isocyanatobenzene] adheres to strict quality management protocols. Each batch undergoes rigorous testing to ensure consistent properties such as NCO content, viscosity, and molecular weight distribution. Certificates of Analysis (COA) documenting purity and key performance parameters are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed, moisture-proof container, protected from light. Store in a cool, dry, and well-ventilated area at a recommended temperature of 15-25°C (59-77°F). Keep away from heat, open flames, and sources of ignition. Due to the reactive isocyanate groups, protect from moisture and atmospheric humidity to prevent premature curing or gelation.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Identification (IR)	Complies
NCO Content	Contact for details
Viscosity @ 25°C	Contact for details
Specific Gravity	Contact for details
Moisture Content	< 0.05%

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