Description

2-Oxepanone, Polymer With 2,2-Dimethyl-1,3-Propanediol is a high-performance polymeric ester, also known as a polycaprolactone-polyol adduct, synthesized from ε-caprolactone and neopentyl glycol. This compound is valued for its excellent hydrolytic stability, low viscosity, and versatility as a building block for advanced polymer synthesis. It serves as a critical intermediate for manufacturers in the coatings, adhesives, sealants, elastomers (CASE), and specialty polyurethane industries, enabling the production of materials with enhanced durability and performance characteristics.

Application

• Polyurethane Synthesis: A key polyol component for producing flexible and rigid polyurethane foams, elastomers, and coatings with improved weatherability and chemical resistance.
• Coatings & Resins: Used in high-performance coating formulations, including powder coatings and radiation-curable systems, to impart flexibility, adhesion, and low-temperature impact resistance.
• Adhesives & Sealants: Functions as a modifier in hot-melt and reactive adhesive systems to enhance toughness, elongation, and bonding properties.
• Elastomers: Serves as a soft segment in thermoplastic polyurethane (TPU) and other elastomeric materials, contributing to a desirable balance of strength and elasticity.
• Polymer Modification: Acts as a compatibilizer or impact modifier in polymer blends and composites to improve processing and mechanical properties.
• Biomedical Materials: Utilized in the research and development of biodegradable polymers for controlled drug delivery systems and tissue engineering scaffolds.

Basic Information

Product Name	2-Oxepanone, Polymer With 2,2-Dimethyl-1,3-Propanediol
CAS No.	69089-45-8
Molecular Formula	(C6H10O2)n·C5H12O2
Molecular Weight	Varies (Polymer)
Synonyms	Polycaprolactone Diol (PCL Diol); Poly(ε-caprolactone) Diol; ε-Caprolactone-Neopentyl Glycol Copolymer; Polycaprolactone Polyol; PCL-NPG Diol; 2,2-Dimethyl-1,3-propanediol, polymer with ε-caprolactone; Neopentyl Glycol initiated Polycaprolactone Diol; Caprolactone-based Polyester Polyol
EINECS	Contact for details

Quality Control

Our 2-Oxepanone, Polymer With 2,2-Dimethyl-1,3-Propanediol is manufactured under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure consistent properties such as hydroxyl value, acid value, molecular weight distribution, and moisture content. Certificates of Analysis (COA) detailing these specifications are available for every shipment to support your quality assurance protocols.

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). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent moisture absorption and potential degradation.

Specification

Item	Specification
Appearance	White to off-white waxy solid or viscous liquid
Hydroxyl Value (mg KOH/g)	Contact for details
Acid Value (mg KOH/g)	≤ 1.0
Moisture Content (Karl Fischer)	≤ 0.1%
Molecular Weight (Mn)	500 - 5000 (Customizable)
Viscosity (@ 60°C)	Contact for details
Identification (IR)	Conforms

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