Description

1,3-Isobenzofurandione, Polymer With 1,3-Butanediol, 1,2-Ethanediol And 2,5-Furandione is a specialized polymeric resin derived from phthalic anhydride and maleic anhydride, copolymerized with diols. This product matters as a versatile intermediate for creating high-performance, cross-linked coatings and adhesives with excellent chemical resistance and durability. Industrial manufacturers in the coatings, composites, and specialty polymer sectors need this material to formulate advanced industrial finishes, electrical insulation, and composite binders.

Application

• Industrial Coatings: As a key resin component for high-solids, powder, and solvent-based coatings requiring chemical and abrasion resistance.
• Electrical Insulating Varnishes: Used in the formulation of wire enamels and impregnating resins for motors and transformers.
• Composite Materials: Serves as a cross-linking agent or modifier in fiber-reinforced plastics (FRP) and laminates.
• Adhesives & Sealants: Imparts toughness and thermal stability to structural adhesives and industrial sealants.
• Printing Inks: Utilized in specialty ink formulations where fast curing and film hardness are critical.
• Can & Coil Coatings: Provides excellent adhesion and flexibility for metal pretreatment and protective coatings.

Basic Information

Product Name	1,3-Isobenzofurandione, Polymer With 1,3-Butanediol, 1,2-Ethanediol And 2,5-Furandione
CAS No.	27056-13-9
Molecular Formula	(C8H4O3·C4H10O2·C2H6O2·C4H2O3)x
Molecular Weight	Polymeric substance (variable)
Synonyms	Phthalic Anhydride-Maleic Anhydride Copolymer with Ethylene Glycol and 1,3-Butylene Glycol; Maleic-Phthalic Copolymer Glycol Ester; Poly(ethylene/butylene glycol maleate phthalate); Polyester Resin based on Phthalic Anhydride, Maleic Anhydride, EG, and BG; 1,3-Isobenzofurandione, polymer with 1,3-butanediol, 1,2-ethanediol and 2,5-furandione; Unsaturated Polyester Resin Intermediate; Glycol Maleate Phthalate Polymer
EINECS	Contact for details

Quality Control

Our production of this polymeric resin adheres to strict quality management systems, ensuring batch-to-batch consistency for demanding industrial applications. Key parameters such as acid value, viscosity, and color are rigorously tested. A Certificate of Analysis (COA) detailing specific lot results is provided with every shipment to guarantee compliance with your technical specifications.

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). Keep away from heat sources and open flame. Under these conditions, the product is typically stable for 24 months from the date of manufacture.

Specification

Item	Specification
Appearance	Viscous liquid to solid resin
Color (Gardner)	≤ 3
Acid Value (mg KOH/g)	15 - 35
Viscosity (at 25°C, mPa·s)	800 - 2500
Non-Volatile Content (%)	≥ 65
Gel Time (at 25°C, min)	Contact for details

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