Description

1,3-Isobenzofurandione, Polymer With 2,5-Furandione, 2,2-Oxybisethanol And 3A,4,7,7A-Tetrahydro-1,3-Isobenzofurandione CAS NO 68479-90-3 is a specialized polymeric resin derived from phthalic anhydride, maleic anhydride, diethylene glycol, and tetrahydrophthalic anhydride. This product is engineered to deliver exceptional thermal stability, chemical resistance, and adhesion properties, making it a critical component in high-performance industrial formulations. It is primarily sought after by manufacturers in the coatings, adhesives, and composite materials sectors who require durable and reliable polymer matrices.

Application

• High-Performance Industrial Coatings: Used as a binder in powder coatings, coil coatings, and can coatings for superior durability and corrosion resistance.
• Thermosetting Adhesives & Sealants: Serves as a key resin in structural adhesives and potting compounds requiring strong bonding and environmental stability.
• Fiber-Reinforced Composites: Acts as a matrix resin in the production of glass or carbon fiber composites for automotive and aerospace applications.
• Electrical Insulating Varnishes: Formulated into wire enamels and insulating varnishes for motors and transformers due to its excellent dielectric properties.
• Curing Agent for Epoxy Resins: Functions as an anhydride-based hardener for epoxy systems, enhancing thermal and mechanical performance.
• Printing Inks: Utilized in specialty printing inks that demand high gloss, scratch resistance, and fast curing.

Basic Information

Product Name	1,3-Isobenzofurandione, Polymer With 2,5-Furandione, 2,2-Oxybisethanol And 3A,4,7,7A-Tetrahydro-1,3-Isobenzofurandione
CAS No.	68479-90-3
Molecular Formula	(C8H4O3·C4H2O3·C4H10O3·C8H8O3)n
Molecular Weight	Polymeric substance (Contact for details)
Synonyms	Poly(phthalic anhydride-co-maleic anhydride-co-diethylene glycol-co-tetrahydrophthalic anhydride); Anhydride-modified polyester resin; TGIC-free polyester resin (for coatings); Acid anhydride functional polyester; Tetrahydrophthalic Anhydride-Maleic Anhydride-Phthalic Anhydride-Diethylene Glycol Copolymer; Polyester polyanhydride; Thermosetting polyester resin
EINECS	Contact for details

Quality Control

Our production of this polymeric resin adheres to strict quality management systems, ensuring batch-to-batch consistency and performance reliability. Key parameters such as acid value, viscosity, glass transition temperature (Tg), and color are rigorously monitored. Certificates of Analysis (COA) documenting full specifications are available for every shipment. We support compliance with relevant industry standards for coatings and composite materials.

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 material is hygroscopic (moisture-sensitive). Keep away from heat sources and incompatible materials such as strong bases and amines.

Specification

Item	Specification
Appearance	Off-white to pale yellow solid or flakes
Acid Value (mg KOH/g)	Contact for details
Viscosity (mPa·s, @ specific temp)	Contact for details
Softening Point (°C)	Contact for details
Glass Transition Temperature (Tg, °C)	Contact for details
Color (Gardner)	≤ 3
Volatile Content (%)	≤ 1.0
Gel Time (min, @ specific temp)	Contact for details

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