Description

2-Oxepanone, Polymer With α-Hydro-ω-Hydroxypoly[ Oxy(Methyl-1,2-Ethanediyl)] And 1,1'-Methylenebis[4-Isocyanatocyclohexane] is a specialized polyurethane prepolymer or resin derived from caprolactone (2-oxepanone), poly(ethylene glycol), and a hydrogenated methylene diphenyl diisocyanate (H12MDI). This compound matters for its ability to impart excellent flexibility, hydrolytic stability, and weatherability to final polymer products. It is primarily needed by formulators in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in the production of high-performance biomedical and specialty composites.

Application

• High-Performance Coatings: Used as a key resin component in automotive, industrial, and marine coatings requiring superior flexibility, chemical resistance, and durability.
• Specialty Adhesives & Sealants: Serves as a prepolymer in formulating flexible, moisture-curing polyurethane adhesives and sealants with strong bonding properties.
• Medical Device Elastomers: Employed in the synthesis of biocompatible polyurethanes for catheters, tubing, and other implantable or contact medical devices due to its stability.
• 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: Used to produce elastomeric parts, gaskets, and vibration-damping materials that require a balance of softness and strength.
• Waterborne Polyurethane Dispersions (PUDs): A precursor for creating stable aqueous polyurethane dispersions used in eco-friendly coatings and finishes for textiles and leather.

Basic Information

Product Name	2-Oxepanone, Polymer With α-Hydro-ω-Hydroxypoly[ Oxy(Methyl-1,2-Ethanediyl)] And 1,1'-Methylenebis[4-Isocyanatocyclohexane]
CAS No.	67599-00-2
Molecular Formula	Contact for details
Molecular Weight	Contact for details (Variable, polymer)
Synonyms	Polycaprolactone-polyethylene glycol-H12MDI copolymer; PEG-PCL-H12MDI prepolymer; Caprolactone/ethylene oxide/H12MDI polymer; Aliphatic polyurethane prepolymer based on caprolactone and PEG; Poly(ethylene glycol)-block-poly(ε-caprolactone) terminated with H12MDI; Hydroxyl-terminated PCL-PEG copolymer reacted with methylenebis(4-cyclohexyl isocyanate); Hydrogenated MDI-capped PCL-PEG copolymer
EINECS	Contact for details

Quality Control

Our 2-Oxepanone, Polymer With α-Hydro-ω-Hydroxypoly[ Oxy(Methyl-1,2-Ethanediyl)] And 1,1'-Methylenebis[4-Isocyanatocyclohexane] is manufactured under a strict quality management system. Each batch undergoes rigorous testing to ensure consistency in key parameters such as NCO content, hydroxyl value, viscosity, and molecular weight distribution. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures recommended on the specific product label or technical data sheet (typically between 15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; exposure to atmospheric moisture or direct light can lead to premature polymerization or degradation of properties.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Identification (IR)	Conforms to structure
NCO Content	Contact for details
Hydroxyl Value	Contact for details
Viscosity	Contact for details
Moisture Content	< 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.