Description

1,3-Isobenzofurandione, 3A,4,7,7A-Tetrahydro-, Polymer With Benzenemethanol, 1,2-Ethanediol, 2,5-Furandione And 2,2-Oxybisethanol is a specialized polymeric resin derived from a complex reaction involving tetrahydrophthalic anhydride and other multifunctional monomers. This product matters for its ability to form durable, cross-linked networks, offering excellent chemical resistance and thermal stability in final coatings and composites. It is primarily needed by manufacturers in the advanced coatings, industrial adhesives, and specialty polymer sectors seeking high-performance binders. CAS No. 103458-31-7.

Application

• High-Performance Industrial Coatings: Serves as a key resin component in corrosion-resistant and chemical-resistant coatings for metal, concrete, and pipeline protection.
• Electrical Insulating Varnishes and Encapsulants: Used in formulations requiring excellent dielectric properties and thermal endurance for motors, transformers, and electronic components.
• Composite Materials: Acts as a matrix resin or cross-linking agent in fiber-reinforced plastics (FRP) for automotive, aerospace, and marine applications.
• Adhesives and Sealants: Provides strong adhesion and durability in structural adhesives, potting compounds, and high-strength sealants.
• Powder Coatings: Utilized as a functional polymer in thermosetting powder coating formulations for appliances, furniture, and architectural finishes.
• Printing Inks: Imparts hardness, gloss, and resistance properties in specialty overprint varnishes and packaging inks.

Basic Information

Product Name	1,3-Isobenzofurandione, 3A,4,7,7A-Tetrahydro-, Polymer With Benzenemethanol, 1,2-Ethanediol, 2,5-Furandione And 2,2-Oxybisethanol
CAS No.	103458-31-7
Molecular Formula	Polymeric substance; Contact for details
Molecular Weight	Polymeric substance; Contact for details
Synonyms	Poly(tetrahydrophthalic anhydride-co-benzyl alcohol-co-ethylene glycol-co-maleic anhydride-co-diethylene glycol); Tetrahydrophthalic Anhydride-Benzyl Alcohol-Ethylene Glycol-Maleic Anhydride-Diethylene Glycol Copolymer; THPA copolymer resin; Thermosetting polyester resin based on tetrahydrophthalic anhydride; Maleic anhydride–tetrahydrophthalic anhydride–benzyl alcohol–ethylene glycol–diethylene glycol copolymer; Polyester resin from THPA, benzyl alcohol, EG, maleic anhydride, and DEG; 3a,4,7,7a-Tetrahydro-1,3-isobenzofurandione polymer with benzenemethanol, 1,2-ethanediol, 2,5-furandione and 2,2'-oxybisethanol
EINECS	Contact for details

Quality Control

Our production of this polymeric resin adheres to strict quality management systems to ensure batch-to-batch consistency and performance reliability. Key parameters such as acid value, viscosity, solids content, and gel time are rigorously monitored. A comprehensive Certificate of Analysis (COA) detailing all relevant specifications is provided with each 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 material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed when not in use to prevent moisture absorption, which can affect product performance. Keep away from heat sources and incompatible materials.

Specification

Item	Specification
Appearance	Viscous liquid to solid resin
Color (Gardner)	≤ 3
Acid Value (mg KOH/g)	30 - 70
Viscosity (at 25°C, cP)	2000 - 10000
Non-Volatile Matter (%)	≥ 98.0
Gel Time (at 150°C, min)	10 - 30

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