Description

Adipic Acid, Polyester With 2,2-Dimethyl-1,3-Propanediol, 1,6-Hexanediol, And 2-Oxepanone is a specialized copolyester resin synthesized from adipic acid, neopentyl glycol (2,2-dimethyl-1,3-propanediol), 1,6-hexanediol, and ε-caprolactone (2-oxepanone). This engineered polymer offers a unique balance of flexibility, chemical resistance, and hydrolytic stability, making it a valuable intermediate for high-performance coatings and adhesives. It is primarily sought by formulators in the automotive, industrial coating, and specialty plastic sectors seeking to enhance product durability and processing characteristics.

Application

• High-Performance Polyurethane Coatings: Acts as a key polyol component for flexible, weatherable, and chemical-resistant topcoats.
• Automotive Clearcoats and Primers: Imparts excellent gloss retention, flexibility, and resistance to environmental etching.
• Industrial Maintenance Coatings: Used in formulations for pipelines, storage tanks, and structural steel requiring long-term corrosion protection.
• Adhesives and Sealants: Serves as a base resin for flexible, durable adhesives with good adhesion to various substrates.
• Plasticizers and Modifiers: Incorporated into other polymer systems to improve low-temperature flexibility and impact resistance.
• Powder Coatings: Utilized in carboxyl-functional polyester resins for hybrid or triglycidyl isocyanurate (TGIC)-free powder coating systems.
• Synthetic Leather and Elastomers: Provides the soft segment in polyurethane dispersions (PUDs) for synthetic leather and elastic fibers.

Basic Information

Item	Details
Product Name	Adipic Acid, Polyester With 2,2-Dimethyl-1,3-Propanediol, 1,6-Hexanediol, And 2-Oxepanone
CAS No.	33569-44-7
Molecular Formula	Polymeric Material - Contact for details
Molecular Weight	Varies by grade and monomer ratio
Synonyms	Adipic acid/neopentyl glycol/1,6-hexanediol/ε-caprolactone copolymer; Poly(adipic acid-co-2,2-dimethyl-1,3-propanediol-co-1,6-hexanediol-co-ε-caprolactone); Copolyester polyol based on adipic acid, NPG, HDO, and CL; Aliphatic copolyester resin; Hydroxyl-terminated copolyester; NPG/HDO/CL-modified adipic acid polyester; Flexible polyester polyol; CAPA®-modified polyester (related trade).
EINECS	Contact for details

Quality Control

Every batch of our copolyester resin is produced under a strict quality management system. We perform comprehensive in-process and final testing to ensure consistent performance, including analysis of hydroxyl value, acid value, viscosity, color, and moisture content. Certificates of Analysis (COA) detailing all critical specifications are provided with each shipment. Our manufacturing facilities and processes are designed to meet the rigorous demands of the coatings industry.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at temperatures between 15°C and 25°C (59°F and 77°F). Keep away from heat sources and open flame. Under these conditions, the product is typically stable for 24 months from the date of manufacture. For bulk storage in drums or totes, ensure containers are kept sealed when not in use to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Colorless to pale yellow viscous liquid
Hydroxyl Value (mg KOH/g)	30 - 80 (Typical)
Acid Value (mg KOH/g)	≤ 2.0
Viscosity @ 25°C (mPa·s)	2,000 - 10,000
Color (Gardner)	≤ 2
Moisture Content (%)	≤ 0.05
Glass Transition Temperature (Tg)	Contact for details

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