Description

2-Oxepanone,Polymer With 1,4-Butanediol,1,1-Methylenebis-[4-Isocyanatobenzene] And 2,2'-Oxybis[Ethanol] is a specialized polyurethane prepolymer or segmented copolymer, synthesized from ε-caprolactone, butanediol, methylene diphenyl diisocyanate (MDI), and diethylene glycol. This engineered material matters for its unique balance of properties derived from its hard and soft segment architecture, offering tailored performance for demanding applications. It is primarily needed by formulators and manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced material science for creating high-performance films, fibers, and biomedical devices.

Application

• High-Performance Polyurethane Coatings: Used as a key resin component in durable, flexible, and chemical-resistant coatings for automotive, industrial, and marine finishes.
• Specialty Adhesives and Sealants: Serves as a base polymer for formulating strong, elastic adhesives and sealants with excellent adhesion to diverse substrates.
• Medical-Grade Elastomers and Devices: Employed in the development of biocompatible materials for catheters, tubing, wound dressings, and other implantable or contact devices.
• Thermoplastic Polyurethane (TPU) Production: Acts as an intermediate or prepolymer for manufacturing TPU granules used in injection molding and extrusion.
• Advanced Composite Materials: Incorporated into matrix resins for fiber-reinforced composites requiring enhanced toughness and impact resistance.
• Controlled-Release Matrices: Utilized in pharmaceutical and agrochemical formulations for creating biodegradable polymer carriers for active ingredients.

Basic Information

Product Name	2-Oxepanone,Polymer With 1,4-Butanediol,1,1-Methylenebis-[4-Isocyanatobenzene] And 2,2'-Oxybis[Ethanol]
CAS No.	56990-15-9
Molecular Formula	(C6H10O2·C4H10O2·C15H10N2O2·C4H10O3)n
Molecular Weight	Polymer - Variable
Synonyms	Poly(ε-caprolactone-co-butylene adipate-co-MDI-co-diethylene glycol); Poly(ester-urethane) based on ε-caprolactone, 1,4-butanediol, MDI, and DEG; ε-Caprolactone/Butanediol/MDI/Diethylene Glycol Copolymer; PCL-based Polyurethane Prepolymer; Aliphatic-Aromatic Polyester Urethane; 4,4'-Methylenebis(phenyl isocyanate), polymer with 1,4-butanediol, diethylene glycol and ε-caprolactone; MDI-Terminated Poly(caprolactone-co-butylene glycol) Prepolymer
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to strict quality management systems, ensuring batch-to-batch consistency for critical performance parameters like molecular weight, isocyanate (NCO) content, and viscosity. Quality is verified through analytical techniques including GPC, FT-IR, and titration methods. A comprehensive Certificate of Analysis (COA) detailing specific grade specifications is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light and moisture. Store in a cool, dry, and well-ventilated area at temperatures recommended for the specific product form (typically between 15°C and 25°C). Keep away from heat, open flames, and sources of ignition. Under these conditions, the product is typically stable for 12-24 months from the date of manufacture. Always refer to the specific material safety data sheet (MSDS/SDS) for detailed handling and storage instructions.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid or solid
Identification (IR)	Conforms to structure
NCO Content	As per grade (e.g., 2.0% - 6.0%)
Viscosity @ 25°C	As per grade
Hydroxyl Value (OHV)	As per grade
Acid Value	≤ 1.0 mg KOH/g
Moisture Content (KF)	≤ 0.05%
Molecular Weight (Mw, GPC)	As per grade

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