Description

2-Oxepanone, Polymer With 1,4-Butanediol, .Alpha.-Hydro-.Omega.-Hydroxypoly(Oxy-1,2-Ethanediyl) And 1,1'-Methylenebis[4-Isocyanatobenzene] CAS NO 72302-15-9 is a specialized polyurethane prepolymer or block copolymer, synthesized from ε-caprolactone, butanediol, polyethylene glycol, and methylene diphenyl diisocyanate (MDI). This engineered material is valued for its unique combination of flexibility, biocompatibility, and controlled degradation properties, making it a critical component in advanced material science. It is primarily sought by manufacturers in the medical device, controlled-release pharmaceutical, and high-performance elastomer sectors.

Application

• Biodegradable Medical Implants: Used as a key polymer matrix for absorbable sutures, bone fixation devices, and soft tissue scaffolds due to its predictable degradation profile.
• Controlled Drug Delivery Systems: Serves as a carrier material in microspheres, nanoparticles, and implantable rods for sustained release of active pharmaceutical ingredients (APIs).
• High-Performance Elastomers and Coatings: Imparts flexibility, toughness, and chemical resistance to polyurethane elastomers, adhesives, and protective coatings.
• Tissue Engineering: Employed in the fabrication of porous 3D scaffolds that support cell adhesion and growth for regenerative medicine applications.
• Specialty Additives for Polymers: Acts as a compatibilizer or modifier to enhance the impact strength and processing characteristics of other polymer blends.

Basic Information

Product Name	2-Oxepanone, Polymer With 1,4-Butanediol, .Alpha.-Hydro-.Omega.-Hydroxypoly(Oxy-1,2-Ethanediyl) And 1,1'-Methylenebis[4-Isocyanatobenzene]
CAS No.	72302-15-9
Molecular Formula	Contact for details
Molecular Weight	Variable (Polymer)
Synonyms	Poly(ε-caprolactone-co-PEG-co-MDI); PCL-PEG-MDI Copolymer; Caprolactone/PEG/MDI Terpolymer; Poly(caprolactone-b-ethylene glycol-b-MDI); Polyurethane Prepolymer based on PCL and PEG; Aliphatic-Aromatic Polyurethane Block Copolymer; MDI-terminated PCL-PEG copolymer; Poly(CL-co-PEG-co-MDI)
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems. Each batch is characterized for critical parameters including molecular weight distribution, composition, and functional group content to ensure batch-to-batch consistency for your formulation needs. Certificates of Analysis (COA) detailing specifications such as inherent viscosity, residual monomer content, and hydroxyl/isocyanate value are available upon request. We support compliance with relevant standards for biomedical applications.

Storage

Preserve in a tightly closed container, protected from light. This material is hygroscopic (moisture-sensitive). Store in a cool, dry place at room temperature (15-25°C/59-77°F) under an inert atmosphere (e.g., nitrogen or argon) for long-term stability. Keep away from heat and moisture sources.

Specification

Item	Specification
Appearance	White to off-white pellets or solid
Identification (IR)	Conforms to structure
Inherent Viscosity	As per grade (dl/g)
Composition (PCL/PEG Ratio)	As per grade
Residual Monomer (HPLC)	< 0.5%
Moisture Content (KF Titration)	< 0.1%
Glass Transition Temperature (DSC)	Reported

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