Description

Propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2-methyl-, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,1'-methylenebis[4-isocyanatocyclohexane] and 2-oxepanone is a specialized polyurethane-polycaprolactone copolymer designed for high-performance applications. This engineered polymer matters for its unique combination of biocompatibility, hydrolytic stability, and tunable mechanical properties derived from its segmented structure. Industries requiring advanced, durable, and compliant materials for medical devices, controlled-release systems, and specialty coatings are the primary users of this compound.

Application

• Biomedical Device Manufacturing: As a key component in the production of implantable medical devices, surgical meshes, and long-term indwelling catheters due to its biocompatibility and stability.
• Drug Delivery Systems: Used in the formulation of biodegradable microspheres, nanoparticles, and implantable matrices for the controlled and sustained release of active pharmaceutical ingredients (APIs).
• Specialty Adhesives and Sealants: Serves as a base polymer for high-strength, flexible adhesives used in medical and electronic assembly where performance under stress is critical.
• Advanced Coatings: Employed in protective and functional coatings for medical instruments, providing a durable, lubricious, or drug-eluting surface.
• Tissue Engineering Scaffolds: Utilized in the fabrication of porous, biodegradable scaffolds that support cell growth and tissue regeneration.
• High-Performance Elastomers: Formulated into elastomeric components requiring a specific balance of flexibility, tensile strength, and environmental resistance.

Basic Information

Product Name	Propanoic acid, 3-hydroxy-2-(hydroxymethyl)-2-methyl-, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, 1,1'-methylenebis[4-isocyanatocyclohexane] and 2-oxepanone
CAS No.	129871-04-1
Molecular Formula	(C7H12O5 • C8H18O3 • C15H22N2O2 • C6H10O2)x
Molecular Weight	Polymer - Variable
Synonyms	Poly(ε-caprolactone)-co-polyurethane; Polycaprolactone-Urethane Copolymer; PCL-PU Copolymer; Poly[(3-hydroxy-2-(hydroxymethyl)-2-methylpropanoic acid)-co-(2-ethyl-2-(hydroxymethyl)-1,3-propanediol)-co-(methylene bis(4-cyclohexyl isocyanate))-co-(ε-caprolactone)]; Aliphatic Polyester-Urethane Copolymer; Biodegradable Polyurethane; Tecoflex® related copolymer; Pellethane® related copolymer
EINECS	Contact for details

Quality Control

Our production of this advanced copolymer adheres to stringent quality systems, ensuring batch-to-batch consistency for critical applications. Each lot is characterized for key parameters including molecular weight distribution (GPC), residual monomer content, and thermal transition properties (DSC). We support compliance with relevant medical device and pharmaceutical guidelines, and a comprehensive Certificate of Analysis (COA) documenting purity, identity, and performance specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and should be protected from atmospheric moisture to prevent hydrolysis and property degradation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white pellets or powder
Identification (IR)	Conforms to reference spectrum
Inherent Viscosity	0.8 - 1.6 dL/g (specified grade)
Glass Transition Temp (Tg)	-40°C to -20°C (DSC)
Melting Point (Tm)	40°C - 60°C (DSC)
Residual ε-Caprolactone	< 0.5% (HPLC)
Residual Solvents	Meets ICH Q3C guidelines
Heavy Metals	< 10 ppm
Loss on Drying	< 0.5%

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