Description

2-Oxepanone, Polymer With 1,4-Butanediol, .Alpha.-Hydro-.Omega.-Hydroxypoly(Oxy-1,4-Butanediyl) And 1,1-Methylenebis4-Isocyanatobenzene is a high-performance polyurethane prepolymer or thermoplastic polyurethane (TPU) elastomer derived from caprolactone, poly(tetramethylene ether) glycol (PTMEG), and methylene diphenyl diisocyanate (MDI). This specialized polymer is engineered to deliver an exceptional balance of mechanical strength, hydrolytic stability, and processing flexibility, making it a critical material for demanding applications. It is essential for manufacturers in the medical device, automotive, and industrial components sectors seeking durable, biocompatible, and high-resilience elastomeric materials.

Application

• Medical Device Components: Used in the production of catheters, tubing, wound care films, and other devices requiring biocompatibility, flexibility, and resistance to bodily fluids.
• Automotive Parts: Formulated into seals, gaskets, cable jacketing, and interior components that demand high abrasion resistance and durability under varying temperatures.
• Industrial Elastomers: Serves as a base for high-performance rollers, belts, seals, and hoses in machinery, offering excellent tensile strength and resistance to oils and chemicals.
• Wire & Cable Insulation: Provides superior insulation and sheathing with excellent mechanical properties and environmental stress crack resistance.
• Footwear & Sporting Goods: Utilized in soles, ski boots, and other athletic equipment where a combination of flexibility, toughness, and low-temperature performance is critical.
• Adhesives & Sealants: Acts as a key component in high-strength, flexible polyurethane adhesives and sealants for construction and assembly applications.
• Film & Sheet Extrusion: Processed into breathable, waterproof membranes and protective sheets for technical textiles and packaging.

Basic Information

Product Name	2-Oxepanone, Polymer With 1,4-Butanediol, .Alpha.-Hydro-.Omega.-Hydroxypoly(Oxy-1,4-Butanediyl) And 1,1-Methylenebis4-Isocyanatobenzene
CAS No.	77243-85-7
Molecular Formula	(C6H10O2·C4H10O2·(C4H8O)n·C15H10N2O2)x
Molecular Weight	Contact for details (Polymer)
Synonyms	Poly(ester-ether-urethane); Thermoplastic Polyurethane Elastomer (TPU) based on Caprolactone, PTMEG, and MDI; Polycaprolactone-PTMEG-MDI Copolymer; Polyurethane Prepolymer; MDI-based Polyurethane; 4,4'-Methylenebis(phenyl isocyanate) polymer with .alpha.-hydro-.omega.-hydroxypoly(oxy-1,4-butanediyl) and 1,4-butanediol, caprolactone-blocked; Poly(tetramethylene ether glycol)-co-polycaprolactone urethane; Aliphatic Polyester-Ether Urethane
EINECS	Contact for details

Quality Control

Our production of this advanced polymer adheres to stringent quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as NCO content, viscosity, molecular weight distribution, and mechanical properties are rigorously tested. A comprehensive Certificate of Analysis (COA) detailing all relevant specifications is provided with each shipment 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 room temperature (15-25°C). Keep away from heat, open flames, and sources of ignition. This material is moisture-sensitive; ensure containers are sealed when not in use to prevent absorption of atmospheric moisture which can affect product performance.

Specification

Item	Specification
Appearance	Colorless to pale yellow pellets or granules
Identification (IR)	Conforms to structure
Assay (NCO Content)	Contact for details
Viscosity (at specified temperature)	Contact for details
Hardness (Shore A/D)	Contact for details
Tensile Strength	Contact for details
Elongation at Break	Contact for details
Moisture Content (KF)	< 0.05%

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