Description

Diethylene Glycol Phthalic Anhydride Polymer is a specialized polyester resin intermediate formed from the polycondensation of diethylene glycol and phthalic anhydride. This polymer is valued for its role in producing high-performance, flexible alkyd resins and polyester polyols used in coatings and adhesives. It is essential for manufacturers in the paints & coatings, adhesives, and plasticizer industries seeking to enhance product flexibility and durability.

Application

• Primary Intermediate for Alkyd Resins: A key raw material in the synthesis of flexible, air-drying alkyd resins for industrial and decorative coatings.
• Polyester Polyol for Polyurethanes: Used to formulate polyester polyols, which are critical components in the production of flexible polyurethane foams, elastomers, and adhesives.
• Plasticizer and Modifier: Acts as a polymeric plasticizer and modifier in PVC and other polymer systems to improve flexibility and processing.
• Saturated Polyester Resins: Serves as a building block for saturated polyester resins used in coil coatings, can coatings, and other high-performance finish applications.
• Adhesive and Sealant Formulations: Incorporated into formulations to provide tack, flexibility, and improved adhesion properties.
• Electrical Insulating Varnishes: Used in the production of wire enamel and insulating varnishes due to its good electrical properties and thermal stability.

Basic Information

Product Name	Diethylene Glycol Phthalic Anhydride Polymer
CAS No.	32472-85-8
Molecular Formula	(C12H12O6)n
Molecular Weight	Variable (Polymer)
Synonyms	Poly(diethylene glycol phthalate); Diethylene Glycol Phthalate Polymer; Phthalic Anhydride-Diethylene Glycol Polymer; Poly(oxy-1,2-ethanediyloxycarbonyl-1,4-phenylenecarbonyl); DEG-Phthalic Anhydride Copolymer; Polyester polyol from DEG and PA; Alkyd resin intermediate; Phthalic acid-diethylene glycol polyester
EINECS	Contact for details

Quality Control

Our Diethylene Glycol Phthalic Anhydride Polymer is manufactured under a strict quality management system. Each batch undergoes rigorous testing for key parameters including acid value, hydroxyl value, viscosity, and color to ensure consistency and performance for your formulations. Certificates of Analysis (COA) documenting these specifications are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong acids, and strong bases. The product may be hygroscopic; ensure containers are sealed after use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Viscous liquid to pale solid
Color (Gardner)	≤ 3
Acid Value (mg KOH/g)	≤ 5.0
Hydroxyl Value (mg KOH/g)	As per grade
Viscosity @ 25°C (cPs)	As per grade
Moisture Content	≤ 0.2%

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